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Rev 154 Rev 816
2004-05-11  Diego Novillo  
2004-05-11  Diego Novillo  
        * tree-cfg.c (delete_tree_cfg): Update call to
        * tree-cfg.c (delete_tree_cfg): Update call to
        free_basic_block_vars.
        free_basic_block_vars.
2004-05-10  Diego Novillo  
2004-05-10  Diego Novillo  
        * tree-ssa-live.h: Fix typo in #include guard.
        * tree-ssa-live.h: Fix typo in #include guard.
2004-05-08  Jeff Sturm  
2004-05-08  Jeff Sturm  
        * tree-eh.c (lower_catch): Lower catch body in context of
        * tree-eh.c (lower_catch): Lower catch body in context of
        catch_region.
        catch_region.
2004-05-07  Richard Henderson  
2004-05-07  Richard Henderson  
        * tree-eh.c (tree_could_trap_p): Use get_base_address on references.
        * tree-eh.c (tree_could_trap_p): Use get_base_address on references.
2004-05-07  Diego Novillo  
2004-05-07  Diego Novillo  
        * doc/invoke.texi: Remove documentation for -ftree-copyprop.
        * doc/invoke.texi: Remove documentation for -ftree-copyprop.
        Update documentation for -ftree-pre.
        Update documentation for -ftree-pre.
2004-05-06  Richard Henderson  
2004-05-06  Richard Henderson  
        * stmt.c (parse_output_constraint): Don't warn for read-write
        * stmt.c (parse_output_constraint): Don't warn for read-write
        memory operand.
        memory operand.
        * gimplify.c (gimplify_asm_expr): Force in-out memory operands
        * gimplify.c (gimplify_asm_expr): Force in-out memory operands
        to minimal lvalues, then expand to non-matching constraints.
        to minimal lvalues, then expand to non-matching constraints.
2004-05-06  Zack Weinberg  
2004-05-06  Zack Weinberg  
        * c-decl.c (finish_function): When !targetm.have_ctors_dtors,
        * c-decl.c (finish_function): When !targetm.have_ctors_dtors,
        record static constructors and destructors here...
        record static constructors and destructors here...
        (c_expand_body_1): ... not here.
        (c_expand_body_1): ... not here.
        * c-objc-common.c (start_cdtor, finish_cdtor): Collapse
        * c-objc-common.c (start_cdtor, finish_cdtor): Collapse
        together into
        together into
        (build_cdtor): ...here.  Update to construct a complete tree
        (build_cdtor): ...here.  Update to construct a complete tree
        for the function.  No need to call push_scope, pop_scope, or
        for the function.  No need to call push_scope, pop_scope, or
        clear_last_expr, or set current_function_cannot_inline.
        clear_last_expr, or set current_function_cannot_inline.
        (c_objc_common_finish_file): Just call build_cdtor for static
        (c_objc_common_finish_file): Just call build_cdtor for static
        ctors/dtors, then clear the variables.  Do this before calling
        ctors/dtors, then clear the variables.  Do this before calling
        cgraph_finalize_compilation_unit and cgraph_optimize.
        cgraph_finalize_compilation_unit and cgraph_optimize.
2004-05-06  Richard Henderson  
2004-05-06  Richard Henderson  
        * fold-const.c (fold): Don't build COND_EXPR from comparisons for
        * fold-const.c (fold): Don't build COND_EXPR from comparisons for
        boolean and integer result types.  Handle X ^ X for TRUTH_XOR_EXPR.
        boolean and integer result types.  Handle X ^ X for TRUTH_XOR_EXPR.
2004-05-05  Richard Henderson  
2004-05-05  Richard Henderson  
        * tree-nested.c (create_tmp_var_for): Disallow variable sized types.
        * tree-nested.c (create_tmp_var_for): Disallow variable sized types.
        (convert_nonlocal_reference): Set val_only false for the base of a
        (convert_nonlocal_reference): Set val_only false for the base of a
        component or array reference.
        component or array reference.
        (convert_local_reference): Likewise.
        (convert_local_reference): Likewise.
2004-05-05  Richard Henderson  
2004-05-05  Richard Henderson  
        * gimplify.c (create_tmp_var): Disallow variable sized objects.
        * gimplify.c (create_tmp_var): Disallow variable sized objects.
        (gimplify_modify_expr): Don't memcpy for VA_ARG_EXPR.
        (gimplify_modify_expr): Don't memcpy for VA_ARG_EXPR.
2004-05-05  Richard Henderson  
2004-05-05  Richard Henderson  
        * fold-const.c (operand_equal_p): Replace only_const argument with
        * fold-const.c (operand_equal_p): Replace only_const argument with
        flags.  Allow pure functions if OEP_PURE_SAME.
        flags.  Allow pure functions if OEP_PURE_SAME.
        (fold, nondestructive_fold_binary_to_constant): Use OEP_ONLY_CONST.
        (fold, nondestructive_fold_binary_to_constant): Use OEP_ONLY_CONST.
        * tree-cfg.c (phi_alternatives_equal): Fix operand_equal_p flag type.
        * tree-cfg.c (phi_alternatives_equal): Fix operand_equal_p flag type.
        * tree-ssa-dom.c (avail_expr_eq): Use OEP_PURE_SAME.
        * tree-ssa-dom.c (avail_expr_eq): Use OEP_PURE_SAME.
        * tree.h (enum operand_equal_flag): New.
        * tree.h (enum operand_equal_flag): New.
        (operand_equal_p): Update argument list.
        (operand_equal_p): Update argument list.
2004-05-05  Richard Henderson  
2004-05-05  Richard Henderson  
        * tree-ssa-operands.c (get_call_flags): Remove.
        * tree-ssa-operands.c (get_call_flags): Remove.
        (get_expr_operands): Use call_expr_flags.
        (get_expr_operands): Use call_expr_flags.
        * tree-alias-common.c (call_may_clobber): Likewise.
        * tree-alias-common.c (call_may_clobber): Likewise.
        (call_may_return): Likewise.
        (call_may_return): Likewise.
2004-04-05  Andrew Pinski  
2004-04-05  Andrew Pinski  
        PR c/15062
        PR c/15062
        * c-typeck.c (build_asm_expr): Mark the output operands
        * c-typeck.c (build_asm_expr): Mark the output operands
        to an asm addressable, if necessary.
        to an asm addressable, if necessary.
2004-05-05  Steven Bosscher  
2004-05-05  Steven Bosscher  
        * Makefile.in (GTFILES): Remove duplicate basic-block.h.
        * Makefile.in (GTFILES): Remove duplicate basic-block.h.
2004-05-04  Richard Henderson  
2004-05-04  Richard Henderson  
        * gimplify.c (build_addr_expr_with_type): Set TREE_ADDRESSABLE.
        * gimplify.c (build_addr_expr_with_type): Set TREE_ADDRESSABLE.
        (gimplify_modify_expr): Turn variable-width assignment into memcpy.
        (gimplify_modify_expr): Turn variable-width assignment into memcpy.
        * tree-nested.c (convert_local_reference): Set val_only after default.
        * tree-nested.c (convert_local_reference): Set val_only after default.
2004-05-04  Diego Novillo  
2004-05-04  Diego Novillo  
        * tree-cfg.c (tree_cfg2vcg): Rename from tree_cfg2dot.  Update all
        * tree-cfg.c (tree_cfg2vcg): Rename from tree_cfg2dot.  Update all
        users.
        users.
        Emit flowgraph using VCG syntax.
        Emit flowgraph using VCG syntax.
        * tree-dump.c (dump_files): Rename -fdump-tree-dot to
        * tree-dump.c (dump_files): Rename -fdump-tree-dot to
        -fdump-tree-vcg.
        -fdump-tree-vcg.
        * tree.h (enum tree_dump_index): Rename TDI_dot to TDI_vcg.
        * tree.h (enum tree_dump_index): Rename TDI_dot to TDI_vcg.
        * doc/invoke.texi: Update documentation to describe
        * doc/invoke.texi: Update documentation to describe
        -fdump-tree-vcg.
        -fdump-tree-vcg.
2004-05-03  Andrew Pinski  
2004-05-03  Andrew Pinski  
        * objc/objc-act.c (build_objc_string_object):
        * objc/objc-act.c (build_objc_string_object):
        Add the fields to the purpose of the list for
        Add the fields to the purpose of the list for
        the constructor.
        the constructor.
2004-05-03  Richard Henderson  
2004-05-03  Richard Henderson  
        * c-simplify.c (gimplify_if_stmt): Loop for else-if.
        * c-simplify.c (gimplify_if_stmt): Loop for else-if.
2004-05-03  Andrew Pinski  
2004-05-03  Andrew Pinski  
        PR optimization/15245
        PR optimization/15245
        * tree-ssa-phiopt.c (conditional_replacement): Use fold_convert
        * tree-ssa-phiopt.c (conditional_replacement): Use fold_convert
        instead of convert.
        instead of convert.
2004-05-03  Diego Novillo  
2004-05-03  Diego Novillo  
        * gimplify.c (gimplify_compound_lval): Gimplify non-constant
        * gimplify.c (gimplify_compound_lval): Gimplify non-constant
        array indices into a temporary variable.
        array indices into a temporary variable.
2004-04-30  Richard Henderson  
2004-04-30  Richard Henderson  
        * builtins.c (validate_arglist): Don't reject side effects.
        * builtins.c (validate_arglist): Don't reject side effects.
        (simplify_builtin_strcpy): Do reject side effects in length.
        (simplify_builtin_strcpy): Do reject side effects in length.
2004-04-30  Jeff Law  
2004-04-30  Jeff Law  
        * tree-outof-ssa.c (eliminate_build): Move code which verifies
        * tree-outof-ssa.c (eliminate_build): Move code which verifies
        that all of a PHI's arguments do not have a partition if the
        that all of a PHI's arguments do not have a partition if the
        result does not have a partition from here to...
        result does not have a partition from here to...
        (rewrite_trees): Here.
        (rewrite_trees): Here.
2004-04-24  Zdenek Dvorak  
2004-04-24  Zdenek Dvorak  
        * tree-cfg.c (factored_computed_goto_label,
        * tree-cfg.c (factored_computed_goto_label,
        factored_computed_goto): Removed.
        factored_computed_goto): Removed.
        (disband_implicit_edges): Unfactor computed gotos without
        (disband_implicit_edges): Unfactor computed gotos without
        using them.
        using them.
2004-04-23  Per Bothner  
2004-04-23  Per Bothner  
        * expr.c (expr_wfl_stack):  Remove unused global.
        * expr.c (expr_wfl_stack):  Remove unused global.
        Pre-patches for future source_location / location_t merge.
        Pre-patches for future source_location / location_t merge.
        * tree.h (EXPR_LOCATION, EXPR_HAS_LOCATION):  New macros.
        * tree.h (EXPR_LOCATION, EXPR_HAS_LOCATION):  New macros.
        * expr.c (expand_expr_real, expand_expr_real_1):  Use new macros.
        * expr.c (expand_expr_real, expand_expr_real_1):  Use new macros.
        * gimple-low.c (lower_stmt):  Likewise.
        * gimple-low.c (lower_stmt):  Likewise.
        * gimplify.c (annotate_all_with_locus):  Likewise.
        * gimplify.c (annotate_all_with_locus):  Likewise.
        * print-tree.c (print_node):  Likewise.
        * print-tree.c (print_node):  Likewise.
        * tree-inline.c (expand_call_inline):  Likewise.
        * tree-inline.c (expand_call_inline):  Likewise.
        * tree-pretty-print.c (tree-pretty-print.c):  Likewise.
        * tree-pretty-print.c (tree-pretty-print.c):  Likewise.
        * tree-sra.c (scalarize_structure_assignment, emit_scalar_copies,
        * tree-sra.c (scalarize_structure_assignment, emit_scalar_copies,
        scalarize_call_expr):  Likewise.
        scalarize_call_expr):  Likewise.
        * tree-ssa-pre.c (code_motion):  Likewise.
        * tree-ssa-pre.c (code_motion):  Likewise.
2004-04-23  Andrew Pinski  
2004-04-23  Andrew Pinski  
        * c-simplify.c (gimplify_decl_stmt) [TYPE_DECL]:
        * c-simplify.c (gimplify_decl_stmt) [TYPE_DECL]:
        Do not check the type.
        Do not check the type.
2004-04-22  Jeff Law  
2004-04-22  Jeff Law  
        * tree-into-ssa.c (rewrite_initialize_block_local_data): Mark all
        * tree-into-ssa.c (rewrite_initialize_block_local_data): Mark all
        arguments as potentially unused.  Do not bother to VARRAY_CLEAR
        arguments as potentially unused.  Do not bother to VARRAY_CLEAR
        the block_defs.  Instead abort if we are presented with a block
        the block_defs.  Instead abort if we are presented with a block
        which has a nonempty block_defs.  Wrap entire thing inside
        which has a nonempty block_defs.  Wrap entire thing inside
        #ifdef ENABLE_CHECKING.
        #ifdef ENABLE_CHECKING.
        * tree-ssa-dom.c (dom_opt_initialize_block_local_data): Similarly
        * tree-ssa-dom.c (dom_opt_initialize_block_local_data): Similarly
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Do not mark
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Do not mark
        arguments to bypassed PHIs as needing to be rewritten.
        arguments to bypassed PHIs as needing to be rewritten.
2004-04-21  Richard Henderson  
2004-04-21  Richard Henderson  
        PR middle-end/14978
        PR middle-end/14978
        * tree-nested.c (convert_nonlocal_reference): Set val_only when
        * tree-nested.c (convert_nonlocal_reference): Set val_only when
        processing any otherwise unhandled expression.
        processing any otherwise unhandled expression.
2004-04-21  Jeff Law  
2004-04-21  Jeff Law  
        * tree-ssa-copy.c (cprop_operand): Break out of cprop_into_stmt.
        * tree-ssa-copy.c (cprop_operand): Break out of cprop_into_stmt.
        (cprop_into_stmt): Use cprop_operand.  Rearrange slightly to avoid
        (cprop_into_stmt): Use cprop_operand.  Rearrange slightly to avoid
        switch statement inside a loop.
        switch statement inside a loop.
        * tree-flow.h (var_ann_d): Add "current_def" field.
        * tree-flow.h (var_ann_d): Add "current_def" field.
        (register_new_def): Lose last argument (currdefs table).
        (register_new_def): Lose last argument (currdefs table).
        * tree-into-ssa.c (currdefs): Remove.
        * tree-into-ssa.c (currdefs): Remove.
        (rewrite_into_ssa): Initialize current_def field on each variable's
        (rewrite_into_ssa): Initialize current_def field on each variable's
        annotation.  Remove initialization/clearing of currdefs.
        annotation.  Remove initialization/clearing of currdefs.
        (set_value_for, get_value_for): Kill.
        (set_value_for, get_value_for): Kill.
        (rewrite_initialize_block): Update call to register_new_def.
        (rewrite_initialize_block): Update call to register_new_def.
        (rewrite_stmt): Similarly.
        (rewrite_stmt): Similarly.
        (rewrite_finalize_block): Get/set a _DECL node's current
        (rewrite_finalize_block): Get/set a _DECL node's current
        definition from its annotation.
        definition from its annotation.
        (get_reaching_def): Similarly.
        (get_reaching_def): Similarly.
        (register_new_def): Similarly.  Lose last argument.
        (register_new_def): Similarly.  Lose last argument.
        * tree-ssa-dom.c (currdefs): Remove.
        * tree-ssa-dom.c (currdefs): Remove.
        (get_value_for, set_value_for): Simplify.
        (get_value_for, set_value_for): Simplify.
        (tree_ssa_dominator_optimize): Initialize current_def on each
        (tree_ssa_dominator_optimize): Initialize current_def on each
        variable's annotation.  Remove initialization/clearing of currdefs.
        variable's annotation.  Remove initialization/clearing of currdefs.
        (thread_across_edge): Lose unnecessary argument to register_new_def.
        (thread_across_edge): Lose unnecessary argument to register_new_def.
        (record_equivalences_from_phis): Likewise.
        (record_equivalences_from_phis): Likewise.
        (register_definitions_for_stmt): Likewise.
        (register_definitions_for_stmt): Likewise.
        (restore_currdefs_to_original_value): Get/set a _DECL node's current
        (restore_currdefs_to_original_value): Get/set a _DECL node's current
        definition from its annotation.  Lose unnecessary "table" argument.
        definition from its annotation.  Lose unnecessary "table" argument.
        (dom_opt_finalize_block): Corresponding changes.
        (dom_opt_finalize_block): Corresponding changes.
        * tree-dfa.c (free_df_for_stmt): Release memory back to the GC
        * tree-dfa.c (free_df_for_stmt): Release memory back to the GC
        system immediately.
        system immediately.
2004-04-21  Ben Elliston  
2004-04-21  Ben Elliston  
        PR middle-end/14730
        PR middle-end/14730
        * expr.c (expand_expr_real_1) : Discard out of bounds
        * expr.c (expand_expr_real_1) : Discard out of bounds
        case label values and ranges.  Saturate case range values that
        case label values and ranges.  Saturate case range values that
        exceed the minimum or maximum permitted value for the controlling
        exceed the minimum or maximum permitted value for the controlling
        expression type to TYPE_MIN_VALUE or TYPE_MAX_VALUE.
        expression type to TYPE_MIN_VALUE or TYPE_MAX_VALUE.
2004-04-20  Jeff Law  
2004-04-20  Jeff Law  
        * tree-into-ssa.c (register_new_def): Avoid pushing useless
        * tree-into-ssa.c (register_new_def): Avoid pushing useless
        information onto the block local definition stack.
        information onto the block local definition stack.
        * tree-into-ssa.c (register_new_def): If there is no current
        * tree-into-ssa.c (register_new_def): If there is no current
        reaching definition for SSA_NAME_VAR (DEF), then just push
        reaching definition for SSA_NAME_VAR (DEF), then just push
        SSA_NAME_VAR (DEF) onto the stack.
        SSA_NAME_VAR (DEF) onto the stack.
        (rewrite_finalize_block): If we pop a _DECL node from the stack,
        (rewrite_finalize_block): If we pop a _DECL node from the stack,
        then the _DECL node has no current reaching definition.
        then the _DECL node has no current reaching definition.
        * tree-ssa-dom.c (restore_currdefs_to_original_value): Similarly.
        * tree-ssa-dom.c (restore_currdefs_to_original_value): Similarly.
2004-04-19  Jeff Law  
2004-04-19  Jeff Law  
        * tree-ssa-dom.c: Reinstate all changes from 2004-04-12.
        * tree-ssa-dom.c: Reinstate all changes from 2004-04-12.
        (lookup_avail_expr): Do not access a hash table object after
        (lookup_avail_expr): Do not access a hash table object after
        it has been freed.
        it has been freed.
2004-04-19  Daniel Berlin  
2004-04-19  Daniel Berlin  
        * doc/passes.texi: Add blurb about PRE.
        * doc/passes.texi: Add blurb about PRE.
2004-04-19  Andrew Pinski  
2004-04-19  Andrew Pinski  
        * tree-ssa-phiopt.c (conditional_replacement):
        * tree-ssa-phiopt.c (conditional_replacement):
        Catch some more non-gimple.
        Catch some more non-gimple.
2004-04-19  Jan Hubicka  
2004-04-19  Jan Hubicka  
        * predict.c (combine_predictions_for_bb): Fix pasto.
        * predict.c (combine_predictions_for_bb): Fix pasto.
2004-04-18  Jan Hubicka  
2004-04-18  Jan Hubicka  
        * tree-inline.c (estimate_num_insn_1): Deal properly with
        * tree-inline.c (estimate_num_insn_1): Deal properly with
        builtin_constant_p and builtin_expect.
        builtin_constant_p and builtin_expect.
2004-04-17  Andrew MacLeod  
2004-04-17  Andrew MacLeod  
        * doc/invoke.texi (tree-ter, tree-lrs): Document options.
        * doc/invoke.texi (tree-ter, tree-lrs): Document options.
2004-04-17  Paul Brook  
2004-04-17  Paul Brook  
        * Makefile.in: Set GMPLIBS and GMPINC.
        * Makefile.in: Set GMPLIBS and GMPINC.
        * configure.ac: Add GMPLIBS and GMPINC.
        * configure.ac: Add GMPLIBS and GMPINC.
        * configure: Regenerate.
        * configure: Regenerate.
2004-04-16  Andrew MacLeod  
2004-04-16  Andrew MacLeod  
        * common.opt (ftree-lrs): New common option.
        * common.opt (ftree-lrs): New common option.
        * flags.h (flag_tree_live_range_split): New flag.
        * flags.h (flag_tree_live_range_split): New flag.
        * opts.c (decode_options): Turn on LRS by default.
        * opts.c (decode_options): Turn on LRS by default.
        (common_handle_option): Set LRS flag to specified value.
        (common_handle_option): Set LRS flag to specified value.
        * toplev.c (flag_tree_live_range_split): Initialize.
        * toplev.c (flag_tree_live_range_split): Initialize.
        (lang_independent_options f_): Add tree-lrs.
        (lang_independent_options f_): Add tree-lrs.
        * tree-outof-ssa.c (rewrite_out_of_ssa): Use LRS flag.
        * tree-outof-ssa.c (rewrite_out_of_ssa): Use LRS flag.
        * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't coalesce
        * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't coalesce
        variables if one is a hardware register.  Coalesce inlined user vars.
        variables if one is a hardware register.  Coalesce inlined user vars.
        (rename_ssa_copies): Scan blocks first, then PHI nodes.
        (rename_ssa_copies): Scan blocks first, then PHI nodes.
2004-04-15  Andrew Pinski  
2004-04-15  Andrew Pinski  
        * builtins.c (fold_builtin_isascii): Do not return non-gimple
        * builtins.c (fold_builtin_isascii): Do not return non-gimple
        code when we are in gimple form.
        code when we are in gimple form.
        (fold_builtin_isdigit): Do not return non-gimple
        (fold_builtin_isdigit): Do not return non-gimple
        code when we are in gimple form.
        code when we are in gimple form.
        * c-simplify.c (gimplify_decl_stmt): Handle TYPE_DECL.
        * c-simplify.c (gimplify_decl_stmt): Handle TYPE_DECL.
2004-04-14  Paul Brook  
2004-04-14  Paul Brook  
        * Makefile.in (GMPLIBS, GMPINC): Don't set.
        * Makefile.in (GMPLIBS, GMPINC): Don't set.
        * configure.ac: Remove checks for GMP.
        * configure.ac: Remove checks for GMP.
        * configure: Regenerate.
        * configure: Regenerate.
2004-04-13  Diego Novillo  
2004-04-13  Diego Novillo  
        * fold-const.c, tree-ssa-ccp.c, tree-ssa-dom.c,
        * fold-const.c, tree-ssa-ccp.c, tree-ssa-dom.c,
        tree-ssa.c, tree.c: Replace all uses of TREE_UNSIGNED with
        tree-ssa.c, tree.c: Replace all uses of TREE_UNSIGNED with
        TYPE_UNSIGNED or DECL_UNSIGNED.
        TYPE_UNSIGNED or DECL_UNSIGNED.
        * c-semantics.c (build_stmt): Don't check type nodes for
        * c-semantics.c (build_stmt): Don't check type nodes for
        side effects.
        side effects.
2004-04-13  Jeff Law  
2004-04-13  Jeff Law  
        * tree-ssa-dom.c: Revert all changes from 2004-04-12.
        * tree-ssa-dom.c: Revert all changes from 2004-04-12.
2004-04-12  Jeff Law  
2004-04-12  Jeff Law  
        * tree-ssa-dom.c (struct expr_hash_elt): Add new field for hash value.
        * tree-ssa-dom.c (struct expr_hash_elt): Add new field for hash value.
        (initialize_hash_element): New LHS argument.  Callers changed.
        (initialize_hash_element): New LHS argument.  Callers changed.
        Initialize the hash value field.
        Initialize the hash value field.
        (remove_local_expressions_from_table): Use htab_remove_elt_with_hash.
        (remove_local_expressions_from_table): Use htab_remove_elt_with_hash.
        (update_rhs_and_lookup_avail_expr): Similary.
        (update_rhs_and_lookup_avail_expr): Similary.
        (lookup_avail_expr): Use htab_find_slot_with_hash.  Simplify slightly
        (lookup_avail_expr): Use htab_find_slot_with_hash.  Simplify slightly
        and pass LHS to initialize_hash_element.
        and pass LHS to initialize_hash_element.
        (record_cond): Also use htab_find_slot_with_hash.  Initialize the
        (record_cond): Also use htab_find_slot_with_hash.  Initialize the
        hash table entry with initialize_hash_element.
        hash table entry with initialize_hash_element.
        (avail_expr_eq): Use the saved hash value rather than calling into
        (avail_expr_eq): Use the saved hash value rather than calling into
        the hash functions again.
        the hash functions again.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Slightly rearrange
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Slightly rearrange
        code to clear tables before each iteration to be clearer.
        code to clear tables before each iteration to be clearer.
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Use
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Use
        DEF_OPS and VDEF_OPS instead of STMT_DEF_OPS and STMT_VDEF_OPS.
        DEF_OPS and VDEF_OPS instead of STMT_DEF_OPS and STMT_VDEF_OPS.
2004-04-12  Diego Novillo  
2004-04-12  Diego Novillo  
        * flags.h (flag_tree_loop): Remove.  Update all users.
        * flags.h (flag_tree_loop): Remove.  Update all users.
        * opts.c (common_handle_option) : Remove.
        * opts.c (common_handle_option) : Remove.
        * toplev.c (f_options): Remove -ftree-loop-optimize.
        * toplev.c (f_options): Remove -ftree-loop-optimize.
        * tree-optimize.c (init_tree_optimization_passes): Don't
        * tree-optimize.c (init_tree_optimization_passes): Don't
        schedule pass_loop.
        schedule pass_loop.
        * tree-ssa-loop.c (tree_ssa_loop_opt): Remove.
        * tree-ssa-loop.c (tree_ssa_loop_opt): Remove.
        (gate_loop): Remove.
        (gate_loop): Remove.
        * doc/invoke.texi: Remove documentation for -ftree-loop-optimize.
        * doc/invoke.texi: Remove documentation for -ftree-loop-optimize.
2004-04-12  Diego Novillo  
2004-04-12  Diego Novillo  
        * c-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
        * c-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
        * c-semantics.c (expand_stmt_toplev): Remove.
        * c-semantics.c (expand_stmt_toplev): Remove.
        * langhooks-def.h (LANG_HOOKS_RTL_EXPAND_INITIALIZER): Remove.
        * langhooks-def.h (LANG_HOOKS_RTL_EXPAND_INITIALIZER): Remove.
        (LANG_HOOKS_RTL_EXPAND_START): Remove.
        (LANG_HOOKS_RTL_EXPAND_START): Remove.
        (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
        (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
        (LANG_HOOKS_RTL_EXPAND_END): Remove.
        (LANG_HOOKS_RTL_EXPAND_END): Remove.
        * langhooks.h (struct lang_hooks_for_rtl_expansion): Remove.
        * langhooks.h (struct lang_hooks_for_rtl_expansion): Remove.
        (struct lang_hooks): Update.
        (struct lang_hooks): Update.
        * tree-optimize.c (tree_rest_of_compilation): Don't call
        * tree-optimize.c (tree_rest_of_compilation): Don't call
        lang_hooks.rtl_expand.start nor lang_hooks.rtl_expand.end.
        lang_hooks.rtl_expand.start nor lang_hooks.rtl_expand.end.
        Call expand_expr_stmt_value instead of
        Call expand_expr_stmt_value instead of
        lang_hooks.rtl_expand.stmt.
        lang_hooks.rtl_expand.stmt.
        * objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
        * objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
2004-04-12  Richard Henderson  
2004-04-12  Richard Henderson  
        * c-common.c (c_do_switch_warnings): Use EXPR_LOCUS instead
        * c-common.c (c_do_switch_warnings): Use EXPR_LOCUS instead
        of STMT_LINENO.
        of STMT_LINENO.
        (c_walk_subtrees): Likewise.
        (c_walk_subtrees): Likewise.
        (c_estimate_num_insns_1): Remove FILE_STMT.
        (c_estimate_num_insns_1): Remove FILE_STMT.
        * c-common.def (FILE_STMT): Remove.
        * c-common.def (FILE_STMT): Remove.
        * c-common.h (FILE_STMT_FILENAME_NODE): Remove.
        * c-common.h (FILE_STMT_FILENAME_NODE): Remove.
        (FILE_STMT_FILENAME, STMT_LINENO, STMT_LINENO_FOR_FN_P): Remove.
        (FILE_STMT_FILENAME, STMT_LINENO, STMT_LINENO_FOR_FN_P): Remove.
        (c_common_stmt_codes): Remove FILE_STMT.
        (c_common_stmt_codes): Remove FILE_STMT.
        * c-dump.c (dump_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        * c-dump.c (dump_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        * c-parse.in (lineno_stmt, lineno_label): Likewise.
        * c-parse.in (lineno_stmt, lineno_label): Likewise.
        * c-pretty-print.c (pp_c_statement): Remove FILE_STMT.
        * c-pretty-print.c (pp_c_statement): Remove FILE_STMT.
        * c-semantics.c (add_stmt): Don't emit FILE_STMT.  Do set
        * c-semantics.c (add_stmt): Don't emit FILE_STMT.  Do set
        EXPR_LOCUS if not yet set.
        EXPR_LOCUS if not yet set.
        (finish_stmt_tree): Don't set line for end of function.
        (finish_stmt_tree): Don't set line for end of function.
        (build_stmt): Set EXPR_LOCUS instead of STMT_LINENO.
        (build_stmt): Set EXPR_LOCUS instead of STMT_LINENO.
        (prep_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        (prep_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        * c-simplify.c (c_gimplify_stmt): Remove FILE_STMT.
        * c-simplify.c (c_gimplify_stmt): Remove FILE_STMT.
        (gimplify_block): Save and restore entire locus.
        (gimplify_block): Save and restore entire locus.
        (stmt_expr_last_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        (stmt_expr_last_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
        * doc/c-tree.texi (FILE_STMT, FILE_STMT_FILENAME, STMT_LINENO): Remove.
        * doc/c-tree.texi (FILE_STMT, FILE_STMT_FILENAME, STMT_LINENO): Remove.
2004-04-12  Jeff Law  
2004-04-12  Jeff Law  
        * tree-ssa-dom.c (true_exprs, false_exprs): Kill.
        * tree-ssa-dom.c (true_exprs, false_exprs): Kill.
        (struct expr_hash_elt): New structure for the expression hash table.
        (struct expr_hash_elt): New structure for the expression hash table.
        (struct dom_walk_block_data): Kill block local true_exprs and
        (struct dom_walk_block_data): Kill block local true_exprs and
        false_exprs.
        false_exprs.
        (get_eq_expr_value): One less local varray argument.  Fix prototype.
        (get_eq_expr_value): One less local varray argument.  Fix prototype.
        Use record_cond rather than record_cond_is_{true,false}.
        Use record_cond rather than record_cond_is_{true,false}.
        (true_false_expr_hash, true_false_expr_eq): Kill.
        (true_false_expr_hash, true_false_expr_eq): Kill.
        (record_cond_is_true, record_cond_is_false): Collapse into ...
        (record_cond_is_true, record_cond_is_false): Collapse into ...
        (record_cond): New function.
        (record_cond): New function.
        (tree_ssa_dominator_optimize): Kill references to true_exprs and
        (tree_ssa_dominator_optimize): Kill references to true_exprs and
        false_exprs.  Use "free" as the free function for the avail_exprs
        false_exprs.  Use "free" as the free function for the avail_exprs
        hash table.
        hash table.
        (dom_opt_initialize_block_local_data): No longer initialize
        (dom_opt_initialize_block_local_data): No longer initialize
        block local true/false expressions.
        block local true/false expressions.
        (initialize_hash_element): New function.
        (initialize_hash_element): New function.
        (remove_local_expressions_from_table): Use initialize_hash_element.
        (remove_local_expressions_from_table): Use initialize_hash_element.
        (update_rhs_and_lookup_avail_expr): Similarly.
        (update_rhs_and_lookup_avail_expr): Similarly.
        (dom_opt_finalize_block): Record true/false expressions into the
        (dom_opt_finalize_block): Record true/false expressions into the
        main avail_expr hash table.  Unwind main hash table appropriately.
        main avail_expr hash table.  Unwind main hash table appropriately.
        Use record_cond rather than record_cond_is_{true,false}.
        Use record_cond rather than record_cond_is_{true,false}.
        (record_equivalences_from_incoming_edge): Pass block local avail_exprs
        (record_equivalences_from_incoming_edge): Pass block local avail_exprs
        varray instead of block local true/false varrays to get_eq_expr_value.
        varray instead of block local true/false varrays to get_eq_expr_value.
        (dump_dominator_optimization_stats): Update to reflect that the
        (dump_dominator_optimization_stats): Update to reflect that the
        true/false expression hash tables are gone.
        true/false expression hash tables are gone.
        (lookup_avail_expr): Simplify slightly now that we only have one
        (lookup_avail_expr): Simplify slightly now that we only have one
        expression hash table.
        expression hash table.
        (avail_expr_hash, avail_expr_eq): Generalize slightly to handle new
        (avail_expr_hash, avail_expr_eq): Generalize slightly to handle new
        hash table entry structure and having true/false expression information
        hash table entry structure and having true/false expression information
        in the available expression hash table.
        in the available expression hash table.
2004-04-09  Jeff Law  
2004-04-09  Jeff Law  
        * tree-ssa_dom.c (register_definitions_for_stmt): Accept a statement
        * tree-ssa_dom.c (register_definitions_for_stmt): Accept a statement
        annotation rather than the statement itself.  Callers changed.
        annotation rather than the statement itself.  Callers changed.
        Use [V]DEF_OPS rather than STMT_[V]DEF_OPS.
        Use [V]DEF_OPS rather than STMT_[V]DEF_OPS.
        * tree-ssa-operands.c (get_stmt_operands): Slightly reorganize to
        * tree-ssa-operands.c (get_stmt_operands): Slightly reorganize to
        avoid unnecessary calls to stmt_ann.
        avoid unnecessary calls to stmt_ann.
        * tree-ssa-pre.c (expr_phi_insertion): Get the statement's annotation
        * tree-ssa-pre.c (expr_phi_insertion): Get the statement's annotation
        and use [V]USE_OPS rather than STMT_[V]USE_OPS.
        and use [V]USE_OPS rather than STMT_[V]USE_OPS.
        (same_e_version_phi_result): Similarly
        (same_e_version_phi_result): Similarly
        (process_left_occs_and_kills): Similarly for [V]DEF_OPS and
        (process_left_occs_and_kills): Similarly for [V]DEF_OPS and
        STMT_[V]DEF_OPS.
        STMT_[V]DEF_OPS.
        * tree-ssa.c (replace_immediate_uses): Similarly.
        * tree-ssa.c (replace_immediate_uses): Similarly.
        (verify_ssa): Similarly.  Also verify that VDEF_OPs uses are dominated
        (verify_ssa): Similarly.  Also verify that VDEF_OPs uses are dominated
        by their sets.
        by their sets.
        * tree-into-ssa.c (insert_phi_nodes_for): Use passed in worklist
        * tree-into-ssa.c (insert_phi_nodes_for): Use passed in worklist
        varray instead of allocated one for every variable we rewrite into
        varray instead of allocated one for every variable we rewrite into
        SSA form.
        SSA form.
        (insert_phi_nodes_1): Pass worklist varray from caller to
        (insert_phi_nodes_1): Pass worklist varray from caller to
        insert_phi_nodes_for.
        insert_phi_nodes_for.
        (insert_phi_nodes): Allocate a worklist for insert_phi_nodes_for
        (insert_phi_nodes): Allocate a worklist for insert_phi_nodes_for
        and pass it to insert_phi_nodes_1.
        and pass it to insert_phi_nodes_1.
2004-04-08  Jeff Law  
2004-04-08  Jeff Law  
        * tree-ssa-dom.c (nonzero_vars): Turn it into a bitmap.
        * tree-ssa-dom.c (nonzero_vars): Turn it into a bitmap.
        (tree_ssa_dominator_optimize): Update initialization, clearing and
        (tree_ssa_dominator_optimize): Update initialization, clearing and
        freeing of nonzero_vars.
        freeing of nonzero_vars.
        (restore_nonzero_vars_to_original_value): New function.
        (restore_nonzero_vars_to_original_value): New function.
        (dom_opt_finalize_block): Use it.
        (dom_opt_finalize_block): Use it.
        (record_var_is_nonzero): Only record the variable into the block
        (record_var_is_nonzero): Only record the variable into the block
        local nonzero vars array if it did not already have a nonzero property.
        local nonzero vars array if it did not already have a nonzero property.
        (lookup_avail_expr): Lookup the nonzero property of an SSA_NAME with
        (lookup_avail_expr): Lookup the nonzero property of an SSA_NAME with
        a bitmap test.
        a bitmap test.
        * fold-const.c (fold): Remove attempt to share code which
        * fold-const.c (fold): Remove attempt to share code which
        simplifies tests against the highest/lowest value of a
        simplifies tests against the highest/lowest value of a
        range between the main folder and the nondestructive folder.
        range between the main folder and the nondestructive folder.
2004-04-08  Brian Booth  
2004-04-08  Brian Booth  
            Diego Novillo  
            Diego Novillo  
        * tree-into-ssa.c (invalidate_name_tags): New function.
        * tree-into-ssa.c (invalidate_name_tags): New function.
        Mark aliases of invalidated name tags for renaming.
        Mark aliases of invalidated name tags for renaming.
        (rewrite_into_ssa): Call invalidate_name_tags.
        (rewrite_into_ssa): Call invalidate_name_tags.
2004-04-07  Diego Novillo  
2004-04-07  Diego Novillo  
        * gimplify.c (gimplify_call_expr): Remove argument POST_P.
        * gimplify.c (gimplify_call_expr): Remove argument POST_P.
        Update all callers.
        Update all callers.
        Don't use POST_P when gimplifying the call expression.
        Don't use POST_P when gimplifying the call expression.
2004-04-07  Diego Novillo  
2004-04-07  Diego Novillo  
        * doc/tree-ssa.texi: Add documentation for the dominator
        * doc/tree-ssa.texi: Add documentation for the dominator
        walker.
        walker.
2004-04-07  Andrew MacLeod  
2004-04-07  Andrew MacLeod  
        * tree-outof-ssa.c: Update comments and reformat for legibility.
        * tree-outof-ssa.c: Update comments and reformat for legibility.
        * tree-ssa-copyrename.c: Update comments and reformat for legibility.
        * tree-ssa-copyrename.c: Update comments and reformat for legibility.
        * tree-ssa-live.c: Update comments and reformat for legibility.
        * tree-ssa-live.c: Update comments and reformat for legibility.
        * tree-ssa-live.h: Update comments and reformat for legibility.
        * tree-ssa-live.h: Update comments and reformat for legibility.
2004-04-07  Diego Novillo  
2004-04-07  Diego Novillo  
        * gimplify.c (gimplify_call_expr): Don't use POST_P when
        * gimplify.c (gimplify_call_expr): Don't use POST_P when
        gimplifying CALL_EXPR arguments.
        gimplifying CALL_EXPR arguments.
2004-04-06  Diego Novillo  
2004-04-06  Diego Novillo  
        * tree-dfa.c: Update comments and reformat for legibility.
        * tree-dfa.c: Update comments and reformat for legibility.
        (find_vars_r): Remove special casing of MODIFY_EXPR and
        (find_vars_r): Remove special casing of MODIFY_EXPR and
        simplify logic.
        simplify logic.
        (compute_reached_uses, compute_reaching_defs, remove_decl,
        (compute_reached_uses, compute_reaching_defs, remove_decl,
        find_decl_location): Remove.
        find_decl_location): Remove.
        (discover_nonconstat_array_refs_r,
        (discover_nonconstat_array_refs_r,
        discover_nonconstant_array_refs): Move ...
        discover_nonconstant_array_refs): Move ...
        * tree-outof-ssa.c: ... here.
        * tree-outof-ssa.c: ... here.
2004-04-05  Richard Henderson  
2004-04-05  Richard Henderson  
        * tree-simple.c (is_gimple_min_invariant): Disallow &a+i.
        * tree-simple.c (is_gimple_min_invariant): Disallow &a+i.
        * tree-ssa-ccp.c (maybe_fold_stmt_addition): Rename from
        * tree-ssa-ccp.c (maybe_fold_stmt_addition): Rename from
        maybe_fold_stmt_plus.  Handle MINUS_EXPR.
        maybe_fold_stmt_plus.  Handle MINUS_EXPR.
        (fold_stmt_r): Pass MINUS_EXPR to it.
        (fold_stmt_r): Pass MINUS_EXPR to it.
2004-04-05  Ben Elliston  
2004-04-05  Ben Elliston  
        * Makefile.in (OBJS-common): Remove tree-browser.o.
        * Makefile.in (OBJS-common): Remove tree-browser.o.
        (cc1): Depend on @TREEBROWSER@ and include in list of objects.
        (cc1): Depend on @TREEBROWSER@ and include in list of objects.
        * configure.ac: Add --enable-tree-browser option.
        * configure.ac: Add --enable-tree-browser option.
        * configure: Rebuild.
        * configure: Rebuild.
2004-04-05  Andrew Pinski  
2004-04-05  Andrew Pinski  
        * tree-ssa-ccp.c (fold_stmt_r): Fix whitespace formatting.
        * tree-ssa-ccp.c (fold_stmt_r): Fix whitespace formatting.
        (set_rhs): Likewise.
        (set_rhs): Likewise.
2004-04-03  Paolo Bonzini  
2004-04-03  Paolo Bonzini  
            Diego Novillo  
            Diego Novillo  
        * tree-alias-common.c (find_func_aliases): Support
        * tree-alias-common.c (find_func_aliases): Support
        assigning to BIT_FIELD_REFs.
        assigning to BIT_FIELD_REFs.
        * tree-cfg.c (verify_expr): Don't allow assign to
        * tree-cfg.c (verify_expr): Don't allow assign to
        a register with BIT_FIELD_REF.
        a register with BIT_FIELD_REF.
        * tree-dfa.c (get_virtual_var): Add consistency check on
        * tree-dfa.c (get_virtual_var): Add consistency check on
        the shape of expected VARs.
        the shape of expected VARs.
        (discover_nonconstant_array_refs_r): Go through BIT_FIELD_REFs.
        (discover_nonconstant_array_refs_r): Go through BIT_FIELD_REFs.
        * tree-simple.c: Document that BIT_FIELD_REFs are valid lvalues.
        * tree-simple.c: Document that BIT_FIELD_REFs are valid lvalues.
        * tree-ssa.c (set_is_used): Go through BIT_FIELD_REFs.
        * tree-ssa.c (set_is_used): Go through BIT_FIELD_REFs.
        * tree-ssa-operands.c (get_expr_operands): Mark VA_ARG_EXPR
        * tree-ssa-operands.c (get_expr_operands): Mark VA_ARG_EXPR
        nodes as making volatile references.
        nodes as making volatile references.
2004-04-02  Fariborz Jahanian 
2004-04-02  Fariborz Jahanian 
        * c-convert.c (convert): Make convert work when converting
        * c-convert.c (convert): Make convert work when converting
        to compatible types across translation unit.
        to compatible types across translation unit.
2004-04-02  Andrew Pinski  
2004-04-02  Andrew Pinski  
        * Makefile.in (stage2_build): Remove support for
        * Makefile.in (stage2_build): Remove support for
        rebuilding libbanshee.
        rebuilding libbanshee.
        * configure.ac: Remove support for rebuilding
        * configure.ac: Remove support for rebuilding
        libbanshee.
        libbanshee.
        * config.gcc (powerpc-*-darwin*): Do not rebuild
        * config.gcc (powerpc-*-darwin*): Do not rebuild
        libbanshee.
        libbanshee.
2004-04-01  Kazu Hirata  
2004-04-01  Kazu Hirata  
        * tree-ssa-forwprop.c: Add a comment about forward propagation
        * tree-ssa-forwprop.c: Add a comment about forward propagation
        of TRUTH_NOT_EXPR.
        of TRUTH_NOT_EXPR.
2004-04-01  Diego Novillo  
2004-04-01  Diego Novillo  
        * tree-optimize.c (tree_rest_of_compilation): Fix typo in
        * tree-optimize.c (tree_rest_of_compilation): Fix typo in
        setting of in_gimple_form.
        setting of in_gimple_form.
2004-04-01  Jeff Law  
2004-04-01  Jeff Law  
        * fold-const.c (fold_relational_hi_lo): Do not return non-gimple
        * fold-const.c (fold_relational_hi_lo): Do not return non-gimple
        code when we are in gimple form.
        code when we are in gimple form.
        * tree-optimize.c (tree_rest_of_compilation): Note when we are in
        * tree-optimize.c (tree_rest_of_compilation): Note when we are in
        gimple form.
        gimple form.
        * tree-ssa-ccp.c (ccp_fold): Tighten tests on return value from
        * tree-ssa-ccp.c (ccp_fold): Tighten tests on return value from
        nondestructive_fold_{unary,binary}_to_constant.
        nondestructive_fold_{unary,binary}_to_constant.
        * tree.h (in_gimple_form): Declare.
        * tree.h (in_gimple_form): Declare.
        * tree-ssa.c (ssa_remove_edge): Correct looping structure.
        * tree-ssa.c (ssa_remove_edge): Correct looping structure.
        (ssa_redirect_edge): Similarly
        (ssa_redirect_edge): Similarly
2004-03-30  Brian Booth  
2004-03-30  Brian Booth  
        * tree-pretty-print.c (dump_vops): Add flags argument and
        * tree-pretty-print.c (dump_vops): Add flags argument and
        propagate it to dump_generic_node calls.
        propagate it to dump_generic_node calls.
        (dump_generic_node): Update dump_vops call.
        (dump_generic_node): Update dump_vops call.
2004-03-29  Diego Novillo  
2004-03-29  Diego Novillo  
        * configure.ac: Emit confirmation messages for libbanshee.
        * configure.ac: Emit confirmation messages for libbanshee.
        * configure: Regenerate.
        * configure: Regenerate.
2004-03-29  Jan Hubicka  
2004-03-29  Jan Hubicka  
        PR 14756
        PR 14756
        * cgraphunit.c (cgraph_decide_inlining): Rewrite handling of
        * cgraphunit.c (cgraph_decide_inlining): Rewrite handling of
        always_inline functions.
        always_inline functions.
2004-03-28  Jan Hubicka  
2004-03-28  Jan Hubicka  
        * tree-inline.c (expand_call_inline):  Remove fixme introduced by
        * tree-inline.c (expand_call_inline):  Remove fixme introduced by
        nested function patch.
        nested function patch.
2004-03-26  Diego Novillo  
2004-03-26  Diego Novillo  
        * tree-ssa-operands.c (get_stmt_operands): Remove always-true
        * tree-ssa-operands.c (get_stmt_operands): Remove always-true
        predicate.
        predicate.
        * tree-ssa-alias.c (maybe_create_global_var): Create
        * tree-ssa-alias.c (maybe_create_global_var): Create
        .GLOBAL_VAR if there are no call-clobbered variables.
        .GLOBAL_VAR if there are no call-clobbered variables.
        * tree-ssa-operands.c (get_stmt_operands): Add call-clobbering
        * tree-ssa-operands.c (get_stmt_operands): Add call-clobbering
        VDEFs for asm ("":::"memory") if there are call-clobbered
        VDEFs for asm ("":::"memory") if there are call-clobbered
        variables or if .GLOBAL_VAR has been created.
        variables or if .GLOBAL_VAR has been created.
2004-03-26  Diego Novillo  
2004-03-26  Diego Novillo  
        * passes.c (rest_of_compilation): Re-enable .01.rtl
        * passes.c (rest_of_compilation): Re-enable .01.rtl
        dumps.
        dumps.
2004-03-25  Diego Novillo  
2004-03-25  Diego Novillo  
        * tree-pretty-print.c (dump_generic_node) : Remove.
        * tree-pretty-print.c (dump_generic_node) : Remove.
        * tree-inline.c (estimate_num_insns_1) : Remove.
        * tree-inline.c (estimate_num_insns_1) : Remove.
        * fold-const.c (fold_relational_hi_lo): Change type of argument
        * fold-const.c (fold_relational_hi_lo): Change type of argument
        'type_p' to const tree and rename it to 'type'.  Update
        'type_p' to const tree and rename it to 'type'.  Update
        all callers.
        all callers.
2004-03-25  Diego Novillo  
2004-03-25  Diego Novillo  
        * Makefile.in (C_AND_OBJC_OBJS): Remove c-call-graph.o
        * Makefile.in (C_AND_OBJC_OBJS): Remove c-call-graph.o
        (c-call-graph.o): Remove.
        (c-call-graph.o): Remove.
        * c-call-graph.c: Remove.
        * c-call-graph.c: Remove.
        * c-tree.h (print_call_graph): Remove.
        * c-tree.h (print_call_graph): Remove.
        (debug_call_graph): Remove.
        (debug_call_graph): Remove.
        * tree-cfg.c: Update/add comments everywhere.
        * tree-cfg.c: Update/add comments everywhere.
        (pre_insert_on_edge): Rename from bsi_insert_on_edge_immediate.
        (pre_insert_on_edge): Rename from bsi_insert_on_edge_immediate.
        * tree-flow.h (build_tree_cfg): Make static.
        * tree-flow.h (build_tree_cfg): Make static.
        (tree_cfg2dot): Likewise.
        (tree_cfg2dot): Likewise.
        (verify_stmt): Likewise.
        (verify_stmt): Likewise.
        * tree-ssa-pre.c (insert_one_operand): Call pre_insert_on_edge.
        * tree-ssa-pre.c (insert_one_operand): Call pre_insert_on_edge.
2004-03-25  Diego Novillo  
2004-03-25  Diego Novillo  
        * tree-ssa-alias.c (struct alias_info): Change type of field
        * tree-ssa-alias.c (struct alias_info): Change type of field
        'num_references' to varray_type.  Update all users.
        'num_references' to varray_type.  Update all users.
2004-03-24  Jeff Law  
2004-03-24  Jeff Law  
        * c-mudflap (mflang_flush_calls): Use push_scope/pop_scope instead
        * c-mudflap (mflang_flush_calls): Use push_scope/pop_scope instead
        of pushlevel and poplevel.
        of pushlevel and poplevel.
2004-03-23  Richard Henderson  
2004-03-23  Richard Henderson  
        PR middle-end/14694
        PR middle-end/14694
        * c-common.c (handle_alias_attribute): Mark aliased variables
        * c-common.c (handle_alias_attribute): Mark aliased variables
        to be TREE_STATIC.
        to be TREE_STATIC.
2004-03-23  Jeff Law  
2004-03-23  Jeff Law  
        * tree-into-ssa.c (register_new_def): Lose unnecessary VAR argument,
        * tree-into-ssa.c (register_new_def): Lose unnecessary VAR argument,
        instead derive VAR from DEF argument.
        instead derive VAR from DEF argument.
        (rewrite_initialize_block, rewrite_stmt, rewrite_operand): Corresponding
        (rewrite_initialize_block, rewrite_stmt, rewrite_operand): Corresponding
        changes.
        changes.
        * tree-ssa-dom.c (register_definitions_for_stmt): Corresponding changes.
        * tree-ssa-dom.c (register_definitions_for_stmt): Corresponding changes.
        (record_equivalences_from_phis): Likewise.
        (record_equivalences_from_phis): Likewise.
        (restore_currdefs_to_original_value): New, extracted from ...
        (restore_currdefs_to_original_value): New, extracted from ...
        (dom_opt_finalize_block): Use restore_currdefs_to_original_value.
        (dom_opt_finalize_block): Use restore_currdefs_to_original_value.
        Restore currdefs after threading across a true edge.
        Restore currdefs after threading across a true edge.
        (thread_across_edge): Register new defintions when we walk through
        (thread_across_edge): Register new defintions when we walk through
        a PHI node or real statement.
        a PHI node or real statement.
        * tree-flow.h (register_new_def): Updated.
        * tree-flow.h (register_new_def): Updated.
2004-03-23  Zdenek Dvorak  
2004-03-23  Zdenek Dvorak  
        * tree-ssa-dce.c (find_obviously_necessary_stmts,
        * tree-ssa-dce.c (find_obviously_necessary_stmts,
        perform_tree_ssa_dce): Do not remove loops.
        perform_tree_ssa_dce): Do not remove loops.
2004-03-19  Diego Novillo  
2004-03-19  Diego Novillo  
        PR optimization/14643
        PR optimization/14643
        * tree-ssa-alias.c (group_aliases_into): Don't add a variable
        * tree-ssa-alias.c (group_aliases_into): Don't add a variable
        to its own may-alias set.
        to its own may-alias set.
        (create_alias_map_for): New.
        (create_alias_map_for): New.
        (setup_pointers_and_addressables): Call it.
        (setup_pointers_and_addressables): Call it.
        Fix allocation of AI->ADDRESSABLE_VARS and AI->POINTERS.
        Fix allocation of AI->ADDRESSABLE_VARS and AI->POINTERS.
        If there are no addressable variables and more than one
        If there are no addressable variables and more than one
        dereferenced pointers, add type tags to the ADDRESSABLE_VARS
        dereferenced pointers, add type tags to the ADDRESSABLE_VARS
        array.
        array.
        (get_tmt_for): Add comment about using alias set equality when
        (get_tmt_for): Add comment about using alias set equality when
        checking for existing tags.
        checking for existing tags.
2004-03-19  Kazu Hirata  
2004-03-19  Kazu Hirata  
        * fold-const.c (fold_relational_const): Remove dead code.
        * fold-const.c (fold_relational_const): Remove dead code.
2004-03-19  Dale Johannesen  
2004-03-19  Dale Johannesen  
        * tree-ssa-dse.c (dse_optimize_stmt):  Redirect uses feeding into
        * tree-ssa-dse.c (dse_optimize_stmt):  Redirect uses feeding into
        a deleted store correctly.
        a deleted store correctly.
2004-03-19  Jeff Law  
2004-03-19  Jeff Law  
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Fix typo.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Fix typo.
        Eliminate unnecessary test of VAL.
        Eliminate unnecessary test of VAL.
        * tree-dfa.c (find_hidden_use_vars): Also look inside the
        * tree-dfa.c (find_hidden_use_vars): Also look inside the
        PENDING_SIZES list for hidden uses.
        PENDING_SIZES list for hidden uses.
        * tree-optimize.c (tree_rest_of_compilation): Expand used variables
        * tree-optimize.c (tree_rest_of_compilation): Expand used variables
        before setting up parameters.
        before setting up parameters.
        * tree-ssa-copyrename.c (rename_ssa_copies): Do nothing for copies
        * tree-ssa-copyrename.c (rename_ssa_copies): Do nothing for copies
        where the LHS has a hidden use.
        where the LHS has a hidden use.
2004-03-18  Diego Novillo  
2004-03-18  Diego Novillo  
        * Makefile.in (TREE_FLOW_H): Reformat.
        * Makefile.in (TREE_FLOW_H): Reformat.
        (OBJS-common): Add tree-into-ssa.o and tree-outof-ssa.o.
        (OBJS-common): Add tree-into-ssa.o and tree-outof-ssa.o.
        (tree-ssa.o): Remove dependency on domwalk.h and tree-ssa-live.h
        (tree-ssa.o): Remove dependency on domwalk.h and tree-ssa-live.h
        (tree-into-ssa.o): New.
        (tree-into-ssa.o): New.
        (tree-outof-ssa.o): New.
        (tree-outof-ssa.o): New.
        (GTFILES): Remove tree-ssa.c.
        (GTFILES): Remove tree-ssa.c.
        (gt-tree-ssa.h): Remove.
        (gt-tree-ssa.h): Remove.
        * tree-into-ssa.c: New file.
        * tree-into-ssa.c: New file.
        Move all the functions used to rename into SSA from tree-ssa.c.
        Move all the functions used to rename into SSA from tree-ssa.c.
        Update/add comments.
        Update/add comments.
        Remove unused variables and structures.
        Remove unused variables and structures.
        Don't use GGC for memory allocation.
        Don't use GGC for memory allocation.
        * tree-outof-ssa.c: New file.
        * tree-outof-ssa.c: New file.
        Move all the functions used to rename out of SSA from
        Move all the functions used to rename out of SSA from
        tree-ssa.c.
        tree-ssa.c.
        Update/add comments.
        Update/add comments.
        * tree-ssa-alias.c (compute_points_to_and_addr_escape): Add
        * tree-ssa-alias.c (compute_points_to_and_addr_escape): Add
        bibliographic reference.
        bibliographic reference.
2004-03-18  Jeff Law  
2004-03-18  Jeff Law  
        * Makefile.in (tree-tailcall.o): Depend on langhooks.h.
        * Makefile.in (tree-tailcall.o): Depend on langhooks.h.
        * tree-tailcall.c: Include langhooks.h.
        * tree-tailcall.c: Include langhooks.h.
        (find_tail_calls): Use types_compatible_p langhook instead of
        (find_tail_calls): Use types_compatible_p langhook instead of
        equality test of TYPE_MAIN_VARIANT.
        equality test of TYPE_MAIN_VARIANT.
        * tree-nested.c (get_chain_decl): Mark the chain decl with
        * tree-nested.c (get_chain_decl): Mark the chain decl with
        TREE_NO_WARNING.
        TREE_NO_WARNING.
2004-03-18  Devang Patel  
2004-03-18  Devang Patel  
        * tree-ssa-live.c (new_tree_live_info): Set num_blocks to
        * tree-ssa-live.c (new_tree_live_info): Set num_blocks to
        last_basic_block instead of n_basic_blocks.
        last_basic_block instead of n_basic_blocks.
        (calculate_live_on_entry): Use last_basic_block instead of
        (calculate_live_on_entry): Use last_basic_block instead of
        n_basic_blocks.
        n_basic_blocks.
        (calculate_live_on_exit): Same.
        (calculate_live_on_exit): Same.
2004-03-17  Jeff Law  
2004-03-17  Jeff Law  
        * tree-tailcall.c (find_tail_calls): Tighten test for tail recursion.
        * tree-tailcall.c (find_tail_calls): Tighten test for tail recursion.
2004-03-17  Diego Novillo  
2004-03-17  Diego Novillo  
        PR optimization/14511
        PR optimization/14511
        * tree-ssa-alias.c (compute_flow_insensitive_aliasing): Do not
        * tree-ssa-alias.c (compute_flow_insensitive_aliasing): Do not
        ignore read-only variables.
        ignore read-only variables.
        (may_alias_p): Fix pointer-to-var calculation when 'var' is an
        (may_alias_p): Fix pointer-to-var calculation when 'var' is an
        array.
        array.
2004-03-17  Jan Hubicka  
2004-03-17  Jan Hubicka  
        * tree-ssa.c (rewrite_into_ssa, compute_global_livein): Fix.
        * tree-ssa.c (rewrite_into_ssa, compute_global_livein): Fix.
2004-03-17  Paolo Bonzini  
2004-03-17  Paolo Bonzini  
        * builtins.c (expand_builtin_constant_p,
        * builtins.c (expand_builtin_constant_p,
        purge_builtin_constant_p): Remove.
        purge_builtin_constant_p): Remove.
        (expand_builtin): Expand __builtin_constant_p to zero.
        (expand_builtin): Expand __builtin_constant_p to zero.
        * function.c (struct function): Remove calls_constant_p.
        * function.c (struct function): Remove calls_constant_p.
        (current_function_calls_constant_p): Remove.
        (current_function_calls_constant_p): Remove.
        * passes.c (rest_of_handle_gcse): Do not run
        * passes.c (rest_of_handle_gcse): Do not run
        purge_builtin_constant_p.
        purge_builtin_constant_p.
        * rtl.def (CONSTANT_P_RTX): Die die die.
        * rtl.def (CONSTANT_P_RTX): Die die die.
        * cse.c (fold_rtx): Do not handle CONSTANT_P_RTX.
        * cse.c (fold_rtx): Do not handle CONSTANT_P_RTX.
        * expr.c (emit_move_insn): Likewise.
        * expr.c (emit_move_insn): Likewise.
        * gcse.c (want_to_gcse_p, gcse_constant_p): Likewise.
        * gcse.c (want_to_gcse_p, gcse_constant_p): Likewise.
        * genrecog.c (validate_pattern): Likewise.
        * genrecog.c (validate_pattern): Likewise.
        * recog.c (immediate_operand): Likewise.
        * recog.c (immediate_operand): Likewise.
        * rtl.h (CONSTANT_P): Likewise.
        * rtl.h (CONSTANT_P): Likewise.
        * simplify-rtx.c (simplify_rtx): Likewise.
        * simplify-rtx.c (simplify_rtx): Likewise.
        * config/alpha/alpha.c (input_operand): Likewise.
        * config/alpha/alpha.c (input_operand): Likewise.
        * config/arm/arm.c (THUMB_LEGITIMATE_CONSTANT_P): Likewise.
        * config/arm/arm.c (THUMB_LEGITIMATE_CONSTANT_P): Likewise.
        * config/c4x/c4x.c (const_operand): Likewise.
        * config/c4x/c4x.c (const_operand): Likewise.
        * config/cris/cris.c (cris_gotless_symbol,
        * config/cris/cris.c (cris_gotless_symbol,
        cris_got_symbol): Likewise.
        cris_got_symbol): Likewise.
        * config/frv/frv.h (LEGITIMATE_PIC_OPERAND_P): Likewise.
        * config/frv/frv.h (LEGITIMATE_PIC_OPERAND_P): Likewise.
        * config/ia64/ia64.c (gr_reg_or_5bit_operand,
        * config/ia64/ia64.c (gr_reg_or_5bit_operand,
        gr_reg_or_6bit_operand, gr_reg_or_8bit_operand,
        gr_reg_or_6bit_operand, gr_reg_or_8bit_operand,
        gr_reg_or_8bit_adjusted_operand,
        gr_reg_or_8bit_adjusted_operand,
        gr_reg_or_8bit_and_adjusted_operand,
        gr_reg_or_8bit_and_adjusted_operand,
        gr_reg_or_14bit_operand, gr_reg_or_22bit_operand,
        gr_reg_or_14bit_operand, gr_reg_or_22bit_operand,
        shift_count_operand, shift_32bit_count_operand): Likewise.
        shift_count_operand, shift_32bit_count_operand): Likewise.
        * config/m32r/m32r.c (move_src_operand): Likewise.
        * config/m32r/m32r.c (move_src_operand): Likewise.
        * config/mips/mips.c (mips_const_insns): Likewise.
        * config/mips/mips.c (mips_const_insns): Likewise.
        * config/mmix/mmix.c (mmix_constant_address_p): Likewise.
        * config/mmix/mmix.c (mmix_constant_address_p): Likewise.
        * config/pa/pa.c (move_src_operand): Likewise.
        * config/pa/pa.c (move_src_operand): Likewise.
        * config/rs6000/rs6000.c (input_operand): Likewise.
        * config/rs6000/rs6000.c (input_operand): Likewise.
        * config/sparc/sparc.c (input_operand): Likewise.
        * config/sparc/sparc.c (input_operand): Likewise.
        * config/v850/v850.c (movsi_source_operand): Likewise.
        * config/v850/v850.c (movsi_source_operand): Likewise.
        * config/xtensa/xtensa.c (move_operand,
        * config/xtensa/xtensa.c (move_operand,
        xtensa_emit_move_sequence): Likewise.
        xtensa_emit_move_sequence): Likewise.
        * config/ia64/ia64.h (PREDICATE_CODES): Do not mention CONSTANT_P_RTX.
        * config/ia64/ia64.h (PREDICATE_CODES): Do not mention CONSTANT_P_RTX.
        * config/pa/pa.h (PREDICATE_CODES): Likewise.
        * config/pa/pa.h (PREDICATE_CODES): Likewise.
2004-03-16  Diego Novillo  
2004-03-16  Diego Novillo  
        * tree-dump.c (struct dump_option_value_info): Add TDF_UID.
        * tree-dump.c (struct dump_option_value_info): Add TDF_UID.
        * tree.h (TDF_UID): Define.
        * tree.h (TDF_UID): Define.
        * doc/invoke.texi: Document -ftree-dump-...-uid.
        * doc/invoke.texi: Document -ftree-dump-...-uid.
        * tree-pretty-print.c (debug_generic_expr): Add TDF_UID.
        * tree-pretty-print.c (debug_generic_expr): Add TDF_UID.
        (debug_generic_stmt): Likewise.
        (debug_generic_stmt): Likewise.
        (dump_decl_name): New function.
        (dump_decl_name): New function.
        (dump_generic_node): Call it.
        (dump_generic_node): Call it.
        (print_declaration): Add new argument 'flags'.  Update all users.
        (print_declaration): Add new argument 'flags'.  Update all users.
        (print_struct_decl): Likewise.
        (print_struct_decl): Likewise.
        * tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
        * tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
        tree-nrv.c, tree-sra.c, tree-ssa-alias.c, tree-ssa-ccp.c,
        tree-nrv.c, tree-sra.c, tree-ssa-alias.c, tree-ssa-ccp.c,
        tree-ssa-copy.c, tree-ssa-dom.c, tree-ssa-dse.c,
        tree-ssa-copy.c, tree-ssa-dom.c, tree-ssa-dse.c,
        tree-ssa-forwprop.c, tree-ssa-operands.c, tree-ssa-pre.c,
        tree-ssa-forwprop.c, tree-ssa-operands.c, tree-ssa-pre.c,
        tree-ssa.c, tree-tail-call.c: Call print_generic_* with
        tree-ssa.c, tree-tail-call.c: Call print_generic_* with
        'dump_flags'.
        'dump_flags'.
2004-03-16  Dale Johannesen  
2004-03-16  Dale Johannesen  
        * Makefile.in (tree-ssa-phiopt.o): add langhooks.h dependency.
        * Makefile.in (tree-ssa-phiopt.o): add langhooks.h dependency.
        (tree-nrv.o): Ditto.
        (tree-nrv.o): Ditto.
        (tree-ssa-copy.o): Ditto.
        (tree-ssa-copy.o): Ditto.
        (tree-ssa-dom.o): Ditto.
        (tree-ssa-dom.o): Ditto.
        (tree-ssa-ccp.o): Ditto.
        (tree-ssa-ccp.o): Ditto.
        * c-common.c: Add #include hashtab.h.
        * c-common.c: Add #include hashtab.h.
        (c_type_hash): New.
        (c_type_hash): New.
        (c_common_get_alias_set): Handle multiple type nodes referring
        (c_common_get_alias_set): Handle multiple type nodes referring
        to "the same" type, currently for C90 only.
        to "the same" type, currently for C90 only.
        * c-decl.c (current_file_decl): Move to toplev.c.
        * c-decl.c (current_file_decl): Move to toplev.c.
        * c-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to
        * c-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to
        c_types_compatible_p.
        c_types_compatible_p.
        (c_types_compatible_p): New.
        (c_types_compatible_p): New.
        * c-tree.h (c_types_compatible_p): New declaration.
        * c-tree.h (c_types_compatible_p): New declaration.
        * c-typeck.c (tagged_types_tu_compatible_p): Allow for
        * c-typeck.c (tagged_types_tu_compatible_p): Allow for
        compiler-generated TYPE_DECLs without a DECL_ORIGINAL_TYPE.
        compiler-generated TYPE_DECLs without a DECL_ORIGINAL_TYPE.
        * gimplify.c (canonicalize_addr_expr): Use types_compatible_p langhook.
        * gimplify.c (canonicalize_addr_expr): Use types_compatible_p langhook.
        (cpt_same_type): Ditto.
        (cpt_same_type): Ditto.
        * langhooks-def.h (lhd_types_compatible_p): New declaration.
        * langhooks-def.h (lhd_types_compatible_p): New declaration.
        LANG_HOOKS_TYPES_COMPATIBLE_P: New.
        LANG_HOOKS_TYPES_COMPATIBLE_P: New.
        * langhooks.c (lhd_types_compatible_p): New.
        * langhooks.c (lhd_types_compatible_p): New.
        * langhooks.h (struct lang_hooks): Add types_compatible_p.
        * langhooks.h (struct lang_hooks): Add types_compatible_p.
        * stmt.c (tail_recursion_args): Use types_compatible_p langhook.
        * stmt.c (tail_recursion_args): Use types_compatible_p langhook.
        * toplev.c (current_file_decl): New, moved from c-decl.c.
        * toplev.c (current_file_decl): New, moved from c-decl.c.
        * tree-nrv.c: Include langhooks.h.
        * tree-nrv.c: Include langhooks.h.
        (tree_nrv): Use types_compatible_p langhook.
        (tree_nrv): Use types_compatible_p langhook.
        * tree-ssa-ccp.c: Include langhooks.h.
        * tree-ssa-ccp.c: Include langhooks.h.
        (maybe_fold_offset_to_array_ref): Use types_compatible_p langhook.
        (maybe_fold_offset_to_array_ref): Use types_compatible_p langhook.
        (maybe_fold_offset_to_component_ref): Ditto (2 places).
        (maybe_fold_offset_to_component_ref): Ditto (2 places).
        (fold_stmt_r): Make sure rhs of COMPONENT_REF is in lhs type.
        (fold_stmt_r): Make sure rhs of COMPONENT_REF is in lhs type.
        * tree-ssa-copy.c: Include langhooks.h.
        * tree-ssa-copy.c: Include langhooks.h.
        (cprop_into_stmt): Use types_compatible_p langhook.
        (cprop_into_stmt): Use types_compatible_p langhook.
        * tree-ssa-dom.c: Include langhooks.h.
        * tree-ssa-dom.c: Include langhooks.h.
        (avail_expr_p): Use types_compatible_p langhook.
        (avail_expr_p): Use types_compatible_p langhook.
        * tree-ssa-phiopt.c: Include langhooks.h.
        * tree-ssa-phiopt.c: Include langhooks.h.
        (conditional_replacement): Use types_compatible_p langhook.
        (conditional_replacement): Use types_compatible_p langhook.
        * tree-ssa.c (tree_ssa_useless_type_conversion_1): Use
        * tree-ssa.c (tree_ssa_useless_type_conversion_1): Use
        types_compatible_p langhook.
        types_compatible_p langhook.
        * tree.h (current_file_decl): New declaration.
        * tree.h (current_file_decl): New declaration.
2004-03-16  Dale Johannesen  
2004-03-16  Dale Johannesen  
        PR optimization/14498
        PR optimization/14498
        * gimplify.c (copy_if_shared_r): Mark VA_ARGS_EXPRs as volatile.
        * gimplify.c (copy_if_shared_r): Mark VA_ARGS_EXPRs as volatile.
        (mark_decls_volatile_r): Moved higher in file (unchanged).
        (mark_decls_volatile_r): Moved higher in file (unchanged).
2004-03-16  Daniel Berlin  
2004-03-16  Daniel Berlin  
        PR optimization/14562
        PR optimization/14562
        * tree-ssa-pre.c (generate_expr_as_of_bb): Don't use names_match_p.
        * tree-ssa-pre.c (generate_expr_as_of_bb): Don't use names_match_p.
        (generate_vops_as_of_bb): Ditto.
        (generate_vops_as_of_bb): Ditto.
2004-03-12  Diego Novillo  
2004-03-12  Diego Novillo  
        PR optimization/14553
        PR optimization/14553
        * tree-ssa.c (replace_immediate_uses): Call propagate_value to
        * tree-ssa.c (replace_immediate_uses): Call propagate_value to
        update operands.
        update operands.
2004-03-12  Diego Novillo  
2004-03-12  Diego Novillo  
        * tree-alias-common.c (create_alias_vars): Add #if
        * tree-alias-common.c (create_alias_vars): Add #if
        HAVE_BANSHEE around test for PTA_ANDERSEN.
        HAVE_BANSHEE around test for PTA_ANDERSEN.
2004-03-11  Diego Novillo  
2004-03-11  Diego Novillo  
        * tree-dfa.c (struct walk_state): Remove fields 'is_store' and
        * tree-dfa.c (struct walk_state): Remove fields 'is_store' and
        'is_indirect_ref'.  Update all users.
        'is_indirect_ref'.  Update all users.
        * tree-flow.h (struct var_ann_d): Remove fields 'is_stored',
        * tree-flow.h (struct var_ann_d): Remove fields 'is_stored',
        'is_dereferenced_store' and 'is_dereferenced_load'.  Update
        'is_dereferenced_store' and 'is_dereferenced_load'.  Update
        all users.
        all users.
        * tree-simple.c (get_base_address): Handle BIT_FIELD_REF.
        * tree-simple.c (get_base_address): Handle BIT_FIELD_REF.
        * tree-ssa-alias.c (struct alias_info): Add fields
        * tree-ssa-alias.c (struct alias_info): Add fields
        'written_vars', 'dereferenced_ptrs_store' and
        'written_vars', 'dereferenced_ptrs_store' and
        'dereferenced_ptrs_load'.
        'dereferenced_ptrs_load'.
        (init_alias_info): Initialize them.
        (init_alias_info): Initialize them.
        (delete_alias_info): Free them.
        (delete_alias_info): Free them.
        (find_ptr_dereference): New.
        (find_ptr_dereference): New.
        (ptr_is_dereferenced_by): Call it.
        (ptr_is_dereferenced_by): Call it.
        Add new argument 'is_store'.  Set to true if the
        Add new argument 'is_store'.  Set to true if the
        expression is an indirect store operation.
        expression is an indirect store operation.
        (compute_points_to_and_addr_escape): If the statement
        (compute_points_to_and_addr_escape): If the statement
        makes a store, load or write operation, update the
        makes a store, load or write operation, update the
        corresponding bitmap.
        corresponding bitmap.
        (compute_flow_insensitive_aliasing): Test the
        (compute_flow_insensitive_aliasing): Test the
        'written_vars' bitmap to determine if alias sets should
        'written_vars' bitmap to determine if alias sets should
        be computed.
        be computed.
        (setup_pointers_and_addressables): Always assume that
        (setup_pointers_and_addressables): Always assume that
        volatile pointers and hidden pointers have been used in a
        volatile pointers and hidden pointers have been used in a
        memory store operation.
        memory store operation.
        * tree-ssa-operands.c (add_stmt_operand): Do add an
        * tree-ssa-operands.c (add_stmt_operand): Do add an
        operand for may-aliased variables before computing
        operand for may-aliased variables before computing
        aliases.
        aliases.
2004-03-11  Zdenek Dvorak  
2004-03-11  Zdenek Dvorak  
        * tree-optimize.c (init_tree_optimization_passes): Move
        * tree-optimize.c (init_tree_optimization_passes): Move
        pass_tail_recursion and pass_ch after pass_may_alias.
        pass_tail_recursion and pass_ch after pass_may_alias.
        * tree-ssa-loop.c (mark_defs_for_rewrite): Mark type tags
        * tree-ssa-loop.c (mark_defs_for_rewrite): Mark type tags
        for rewriting.
        for rewriting.
        * tree-ssa.c (mark_def_sites): Process the operand of a
        * tree-ssa.c (mark_def_sites): Process the operand of a
        VDEF before the result.
        VDEF before the result.
2004-03-11  Richard Henderson  
2004-03-11  Richard Henderson  
        PR 14204
        PR 14204
        * tree-ssa.c (warn_uninit): Don't warn for hard register variables.
        * tree-ssa.c (warn_uninit): Don't warn for hard register variables.
2004-03-10  Richard Henderson  
2004-03-10  Richard Henderson  
        * tree-simple.c (get_base_var, get_base_decl): Remove.
        * tree-simple.c (get_base_var, get_base_decl): Remove.
        * tree-simple.h: Likewise.
        * tree-simple.h: Likewise.
        * tree-dfa.c (discover_nonconstant_array_refs_r): Use get_base_address.
        * tree-dfa.c (discover_nonconstant_array_refs_r): Use get_base_address.
        * tree-ssa-alias.c (ptr_is_dereferenced_by): Likewise.
        * tree-ssa-alias.c (ptr_is_dereferenced_by): Likewise.
        (add_pointed_to_var, is_escape_site): Likewise.
        (add_pointed_to_var, is_escape_site): Likewise.
        * tree-ssa-ccp.c (get_default_value): Expect only SSA_NAME and DECLs.
        * tree-ssa-ccp.c (get_default_value): Expect only SSA_NAME and DECLs.
        * tree-ssa-operands.c (add_stmt_operand): Likewise.
        * tree-ssa-operands.c (add_stmt_operand): Likewise.
        (note_addressable): Use get_base_address.
        (note_addressable): Use get_base_address.
        * tree-ssa-dce.c (need_to_preserve_store): Expect only SSA_NAME.
        * tree-ssa-dce.c (need_to_preserve_store): Expect only SSA_NAME.
        * tree-ssa.c (set_is_used): Inline get_base_decl.
        * tree-ssa.c (set_is_used): Inline get_base_decl.
2004-03-10  Richard Henderson  
2004-03-10  Richard Henderson  
        * tree-nested.c (convert_nonlocal_reference): Clear TREE_INVARIANT
        * tree-nested.c (convert_nonlocal_reference): Clear TREE_INVARIANT
        on modified ADDR_EXPRs.
        on modified ADDR_EXPRs.
2004-03-10  Andrew Pinski  
2004-03-10  Andrew Pinski  
        PR c/14475
        PR c/14475
        * c-decl.c (check_bitfield_type_and_width): Check for null
        * c-decl.c (check_bitfield_type_and_width): Check for null
        lang_type_specific when check the precision of an enum.
        lang_type_specific when check the precision of an enum.
2004-03-09  Andrew Pinski  
2004-03-09  Andrew Pinski  
        * Makefile.in (tree-ssa-forwprop.o): Fix the dependences.
        * Makefile.in (tree-ssa-forwprop.o): Fix the dependences.
2004-03-09  Jeff Law  
2004-03-09  Jeff Law  
        * tree-flow-inline.h (may_propagate_copy): Do not allow propagation of
        * tree-flow-inline.h (may_propagate_copy): Do not allow propagation of
        a constant for a virtual operand.
        a constant for a virtual operand.
2004-03-08  Richard Henderson 
2004-03-08  Richard Henderson 
        * calls.c (initialize_argument_information): Add
        * calls.c (initialize_argument_information): Add
        parameter may_tail_call.  Set to false for invisible
        parameter may_tail_call.  Set to false for invisible
        pass-by-reference arguments that require stack
        pass-by-reference arguments that require stack
        allocation.
        allocation.
        Update all users.
        Update all users.
2004-03-07  Jeff Law  
2004-03-07  Jeff Law  
        * tree-ssa-dom.c: (get_eq_expr_value): Fix typo when comparing a
        * tree-ssa-dom.c: (get_eq_expr_value): Fix typo when comparing a
        boolean against a constant.
        boolean against a constant.
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs): Do not
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs): Do not
        record the same SSA_NAME more than once.  Only record the SSA_NAME
        record the same SSA_NAME more than once.  Only record the SSA_NAME
        tested, not the COND_EXPR.
        tested, not the COND_EXPR.
        (substitute_single_use_vars): Substitute booleans which are
        (substitute_single_use_vars): Substitute booleans which are
        set from a TRUTH_NOT_EXPR even if they have more than one use site.
        set from a TRUTH_NOT_EXPR even if they have more than one use site.
2004-03-05  Jeff Law  
2004-03-05  Jeff Law  
        * tree-ssa-dce.c (remove_dead_stmt): Clear PENDING_STMT after
        * tree-ssa-dce.c (remove_dead_stmt): Clear PENDING_STMT after
        redirect_edge_and_branch call.
        redirect_edge_and_branch call.
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs): Also
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs): Also
        record COND_EXPRs with single use vars defined by SSA_NAME + CONST
        record COND_EXPRs with single use vars defined by SSA_NAME + CONST
        expressions.
        expressions.
        (substitute_single_use_vars): Corresponding changes to rewrite
        (substitute_single_use_vars): Corresponding changes to rewrite
        COND_EXPRs using single use vars defined by SSA_NAME + CONST
        COND_EXPRs using single use vars defined by SSA_NAME + CONST
        expressions.
        expressions.
2004-03-05  Ulrich Weigand  
2004-03-05  Ulrich Weigand  
        * config/s390/s390.c (s390_expand_movstr): Do not use
        * config/s390/s390.c (s390_expand_movstr): Do not use
        expand_exit_loop_top_cond, manually copy loop header.
        expand_exit_loop_top_cond, manually copy loop header.
        (s390_expand_clrstr): Likewise.
        (s390_expand_clrstr): Likewise.
        (s390_expand_cmpmem): Likewise.
        (s390_expand_cmpmem): Likewise.
2004-03-04  Diego Novillo  
2004-03-04  Diego Novillo  
        * tree-ssa-alias.c (compute_flow_sensitive_aliasing): If
        * tree-ssa-alias.c (compute_flow_sensitive_aliasing): If
        a name tag has been marked call-clobbered, also mark the
        a name tag has been marked call-clobbered, also mark the
        corresponding type tag.
        corresponding type tag.
2004-03-04  Zdenek Dvorak  
2004-03-04  Zdenek Dvorak  
        * tree-ssa-loop-live.c (coalesce_tpa_members): Update the root
        * tree-ssa-loop-live.c (coalesce_tpa_members): Update the root
        variable of the partition.
        variable of the partition.
2004-03-04  Jeff Law  
2004-03-04  Jeff Law  
        * tree-ssa-dce.c (remove_dead_stmt): Redirect an existing edge
        * tree-ssa-dce.c (remove_dead_stmt): Redirect an existing edge
        rather than deleting the old ones and creating a new one when
        rather than deleting the old ones and creating a new one when
        removing a dead conditional.
        removing a dead conditional.
        * fold-const.c (fold): When rebuilding the expression after a
        * fold-const.c (fold): When rebuilding the expression after a
        call to fold_relational_hi_lo, make sure to convert the type of
        call to fold_relational_hi_lo, make sure to convert the type of
        the second argument to the type of the first.
        the second argument to the type of the first.
2004-03-04  Diego Novillo  
2004-03-04  Diego Novillo  
        * cgraphunit.c (cgraph_optimize): Do not do memory release
        * cgraphunit.c (cgraph_optimize): Do not do memory release
        check if there have been errors.
        check if there have been errors.
2004-03-03  Jeff Law  
2004-03-03  Jeff Law  
        * tree-ssa-phiopt.c (conditional_replacement): Clear EDGE_TRUE_VALUE
        * tree-ssa-phiopt.c (conditional_replacement): Clear EDGE_TRUE_VALUE
        and EDGE_FALSE_VALUE on the remaining edge after eliminating a PHI.
        and EDGE_FALSE_VALUE on the remaining edge after eliminating a PHI.
2004-03-03  Andrew MacLeod  
2004-03-03  Andrew MacLeod  
        * tree-ssa-copyrename.c (gate_copyrename): Really check it in.
        * tree-ssa-copyrename.c (gate_copyrename): Really check it in.
        * tree-ssa.c (create_temp): Use DECL_ARTIFICIAL from original decl.
        * tree-ssa.c (create_temp): Use DECL_ARTIFICIAL from original decl.
2004-03-02  Zdenek Dvorak  
2004-03-02  Zdenek Dvorak  
        * tree-tailcall.c (struct tailcall): Remove return_block and return_bsi
        * tree-tailcall.c (struct tailcall): Remove return_block and return_bsi
        fields, add m and a fields.
        fields, add m and a fields.
        (m_acc, a_acc): New.
        (m_acc, a_acc): New.
        (find_tail_calls): Find tail calls on whose results simple operations
        (find_tail_calls): Find tail calls on whose results simple operations
        are performed.
        are performed.
        (independent_on_stmt_p, process_assignment,
        (independent_on_stmt_p, process_assignment,
        propagate_through_phis, adjust_accumulator_values,
        propagate_through_phis, adjust_accumulator_values,
        adjust_return_value): New.
        adjust_return_value): New.
        (eliminate_tail_call): Update the accumulators if needed.
        (eliminate_tail_call): Update the accumulators if needed.
        (optimize_tail_call): Do not create phis.
        (optimize_tail_call): Do not create phis.
        (tree_optimize_tail_calls): Create phis and accumulators as needed.
        (tree_optimize_tail_calls): Create phis and accumulators as needed.
        Adjust return values.
        Adjust return values.
2004-03-02  Diego Novillo  
2004-03-02  Diego Novillo  
        * tree-ssa-operands.c (get_expr_operands): Mark CALL_EXPRs
        * tree-ssa-operands.c (get_expr_operands): Mark CALL_EXPRs
        with has_volatile_ops if aliases haven't been computed yet.
        with has_volatile_ops if aliases haven't been computed yet.
        (add_stmt_operand): Use 'true' instead of '1'.
        (add_stmt_operand): Use 'true' instead of '1'.
2004-03-02  Diego Novillo  
2004-03-02  Diego Novillo  
        PR optimization/14266
        PR optimization/14266
        * tree-ssa-alias.c (create_global_var): Mark GLOBAL_VAR for
        * tree-ssa-alias.c (create_global_var): Mark GLOBAL_VAR for
        renaming.
        renaming.
2004-03-01  Richard Henderson  
2004-03-01  Richard Henderson  
        * tree.c (associative_tree_code): Remove MINUS_EXPR, LSHIFT_EXPR,
        * tree.c (associative_tree_code): Remove MINUS_EXPR, LSHIFT_EXPR,
        RSHIFT_EXPR.
        RSHIFT_EXPR.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Use
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Use
        is_gimple_min_invariant and is_gimple_var.  Handle minus_expr
        is_gimple_min_invariant and is_gimple_var.  Handle minus_expr
        specially.
        specially.
2004-03-01  Richard Henderson  
2004-03-01  Richard Henderson  
        * cfgbuild.c (rtl_make_eh_edge): Rename from make_eh_edge.
        * cfgbuild.c (rtl_make_eh_edge): Rename from make_eh_edge.
        * basic-block.h, except.c: Update decl and uses.
        * basic-block.h, except.c: Update decl and uses.
2004-03-01  Frank Ch. Eigler  
2004-03-01  Frank Ch. Eigler  
        * doc/passes.texi: Add information about mudflap.
        * doc/passes.texi: Add information about mudflap.
2004-03-01  Andrew Pinski  
2004-03-01  Andrew Pinski  
        PR middle-end/13066
        PR middle-end/13066
        * fold-const (fold): Call fold_convert when building
        * fold-const (fold): Call fold_convert when building
        a TRUTH_*_EXPR tree.
        a TRUTH_*_EXPR tree.
2004-03-01  Andrew MacLeod  
2004-03-01  Andrew MacLeod  
        * common.opt : Add tree-copyrename option. Remove duplicate tree-sra.
        * common.opt : Add tree-copyrename option. Remove duplicate tree-sra.
        * flags.h (flag_tree_copyrename): Declare.
        * flags.h (flag_tree_copyrename): Declare.
        * opts.c (decode_options): Turn copyrename on by default at -O.
        * opts.c (decode_options): Turn copyrename on by default at -O.
        (common_handle_option): Handle -ftree-copyrename.
        (common_handle_option): Handle -ftree-copyrename.
        * toplev.c (flag_tree_copyrename): Declare.
        * toplev.c (flag_tree_copyrename): Declare.
        * tree-ssa-copyrename.c (gate_copyrename): New.  Check flag.
        * tree-ssa-copyrename.c (gate_copyrename): New.  Check flag.
        (pass_rename_ssa_copies): Initialize with gated routine.
        (pass_rename_ssa_copies): Initialize with gated routine.
        (lang_independent_options f_): Add tree-copyrename.
        (lang_independent_options f_): Add tree-copyrename.
        * doc/invoke.texi: Add -fdump-tree-copyrename and  -ftree-copyrename.
        * doc/invoke.texi: Add -fdump-tree-copyrename and  -ftree-copyrename.
        * doc/passes.texi: Add blurb for copy renaming.
        * doc/passes.texi: Add blurb for copy renaming.
2004-03-01  Jeff Law  
2004-03-01  Jeff Law  
        * tree-ssa-dom.c (true_false_expr_hash): Update comments slightly.
        * tree-ssa-dom.c (true_false_expr_hash): Update comments slightly.
        (true_false_expr_eq): Update comments slightly.  Avoid using
        (true_false_expr_eq): Update comments slightly.  Avoid using
        operand_equal_p, instead check the code and operands directly.
        operand_equal_p, instead check the code and operands directly.
2004-03-01  Andrew MacLeod  
2004-03-01  Andrew MacLeod  
        * Makefile.in (tree-ssa-copyrename.o): New object.
        * Makefile.in (tree-ssa-copyrename.o): New object.
        * timevar.def (TV_TREE_COPY_RENAME): New time variable.
        * timevar.def (TV_TREE_COPY_RENAME): New time variable.
        * tree-optimize.c (init_tree_optimization_passes): Add copy rename
        * tree-optimize.c (init_tree_optimization_passes): Add copy rename
        pass.
        pass.
        * tree-pass.h (pass_rename_ssa_copies): New pass structure.
        * tree-pass.h (pass_rename_ssa_copies): New pass structure.
        * tree-sra.c (lookup_scalar): Copy DECL_ARITIFICIAL flag from base.
        * tree-sra.c (lookup_scalar): Copy DECL_ARITIFICIAL flag from base.
        * tree-ssa-copyrename.c : New file.
        * tree-ssa-copyrename.c : New file.
        (copy_rename_partition_coalesce): Coalesce partitions for renaming.
        (copy_rename_partition_coalesce): Coalesce partitions for renaming.
        (rename_ssa_copies): Find renamable copies.
        (rename_ssa_copies): Find renamable copies.
        (pass_rename_ssa_copies): Initialize.
        (pass_rename_ssa_copies): Initialize.
        * tree-ssa-live.c (register_ssa_partition): Move to tree-ssa-live.h.
        * tree-ssa-live.c (register_ssa_partition): Move to tree-ssa-live.h.
        * tree-ssa-live.h (register_ssa_partition): Moved from tree-ssa-live.c.
        * tree-ssa-live.h (register_ssa_partition): Moved from tree-ssa-live.c.
2004-02-29  David Edelsohn  
2004-02-29  David Edelsohn  
        * doloop.c (doloop_optimize): Increment n_iterations if loop->top
        * doloop.c (doloop_optimize): Increment n_iterations if loop->top
        present.
        present.
2004-02-29  Diego Novillo  
2004-02-29  Diego Novillo  
        * gimple-low.c (pass_remove_useless_vars): Add TODO_dump_func.
        * gimple-low.c (pass_remove_useless_vars): Add TODO_dump_func.
2004-02-27  Richard Henderson  
2004-02-27  Richard Henderson  
        PR middle-end/14310
        PR middle-end/14310
        * explow.c (emit_stack_save): Remove savearea mode check.
        * explow.c (emit_stack_save): Remove savearea mode check.
2004-02-27  Richard Henderson  
2004-02-27  Richard Henderson  
        * builtins.c (simplify_builtin_strcmp): Don't export.  Remove
        * builtins.c (simplify_builtin_strcmp): Don't export.  Remove
        length parameters.  Remove conversion to memcmp.
        length parameters.  Remove conversion to memcmp.
        (simplify_builtin_strncmp): Likewise.
        (simplify_builtin_strncmp): Likewise.
        * expr.h: Don't declare them.
        * expr.h: Don't declare them.
        * tree-ssa-ccp.c (ccp_fold_builtin): Don't call them.
        * tree-ssa-ccp.c (ccp_fold_builtin): Don't call them.
2004-02-27  Dale Johannesen  
2004-02-27  Dale Johannesen  
        * tree-cfg.c (cleanup_control_expr_graph): Prevent edge
        * tree-cfg.c (cleanup_control_expr_graph): Prevent edge
        probability from overflowing due to roundoff errors.
        probability from overflowing due to roundoff errors.
2004-02-27  Jeff Law  
2004-02-27  Jeff Law  
        * tree-cfg.c (verify_expr): Do not walk down into types.
        * tree-cfg.c (verify_expr): Do not walk down into types.
        Expand checking to verify that unary/binary operators have
        Expand checking to verify that unary/binary operators have
        gimple operands.
        gimple operands.
        * tree-ssa-ccp.c (ccp_fold_builtin, case BUILT_IN_STRLEN): Do not
        * tree-ssa-ccp.c (ccp_fold_builtin, case BUILT_IN_STRLEN): Do not
        create non-gimple code.  Similarly for BUILTIN_IN_STRCPY and
        create non-gimple code.  Similarly for BUILTIN_IN_STRCPY and
        BUILT_IN_STRNCPY.
        BUILT_IN_STRNCPY.
        * tree-ssa-phiopt.c (conditional_replacement): Do not create
        * tree-ssa-phiopt.c (conditional_replacement): Do not create
        non-gimple code.
        non-gimple code.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.
        * tree-simple.c (is_gimple_min_invariant): Subtraction of a
        * tree-simple.c (is_gimple_min_invariant): Subtraction of a
        constant from a constant pointer is a gimple invariant as well.
        constant from a constant pointer is a gimple invariant as well.
        * tree-ssa-operands.c (get_expr_operands): Handle subtraction
        * tree-ssa-operands.c (get_expr_operands): Handle subtraction
        of a constant from a constant pointer too.
        of a constant from a constant pointer too.
        * fold-const.c (fold): Tighten test for optimizing an equality
        * fold-const.c (fold): Tighten test for optimizing an equality
        comparison of the address of two variables.
        comparison of the address of two variables.
        * tree-inline.c (setup_one_parameter): Improve test for when we
        * tree-inline.c (setup_one_parameter): Improve test for when we
        need to gimplify the initialization statements.
        need to gimplify the initialization statements.
2004-02-27  Diego Novillo  
2004-02-27  Diego Novillo  
        PR optimization/14312
        PR optimization/14312
        * tree-pretty-print.c (dump_generic_node): Mark tail calls.
        * tree-pretty-print.c (dump_generic_node): Mark tail calls.
        * tree-ssa-alias.c (compute_may_aliases): Restore call to
        * tree-ssa-alias.c (compute_may_aliases): Restore call to
        dump_referenced_vars.
        dump_referenced_vars.
        (compute_points_to_and_addr_escape): If the address of a
        (compute_points_to_and_addr_escape): If the address of a
        variable V is stored into a non-pointer variable, mark V as
        variable V is stored into a non-pointer variable, mark V as
        call-clobbered.
        call-clobbered.
        * tree-tailcall.c (suitable_for_tail_opt_p): Check for
        * tree-tailcall.c (suitable_for_tail_opt_p): Check for
        call-clobbered instead of TREE_ADDRESSABLE.
        call-clobbered instead of TREE_ADDRESSABLE.
        Ignore memory tags.
        Ignore memory tags.
        (optimize_tail_call): Add newline to dump output.
        (optimize_tail_call): Add newline to dump output.
2004-02-27  Diego Novillo  
2004-02-27  Diego Novillo  
        PR optimization/13347
        PR optimization/13347
        * tree-sra.c (scalarize_structure_assignment): Use STRIP_NOPS
        * tree-sra.c (scalarize_structure_assignment): Use STRIP_NOPS
        instead of STRIP_USELESS_TYPE_CONVERSION to remove type casts
        instead of STRIP_USELESS_TYPE_CONVERSION to remove type casts
        from RHS of the assignment.
        from RHS of the assignment.
        * tree-ssa.c (tree_ssa_useless_type_conversion_1): Reformat
        * tree-ssa.c (tree_ssa_useless_type_conversion_1): Reformat
        and rephrase comments.
        and rephrase comments.
        * tree.h (STRIP_USELESS_TYPE_CONVERSION): Reformat comment.
        * tree.h (STRIP_USELESS_TYPE_CONVERSION): Reformat comment.
2004-02-26  Zdenek Dvorak  
2004-02-26  Zdenek Dvorak  
        * tree-cfg.c (tree_redirect_edge_and_branch_1): Allow to redirect
        * tree-cfg.c (tree_redirect_edge_and_branch_1): Allow to redirect
        RETURN_EXPR branches.
        RETURN_EXPR branches.
2004-02-26  Jeff Law  
2004-02-26  Jeff Law  
        * tree-nrv.c (tree_nrv): Only perform NRV optimization when the
        * tree-nrv.c (tree_nrv): Only perform NRV optimization when the
        return value lives in memory.
        return value lives in memory.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): If an
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): If an
        operand is unsigned, then we can eliminate more ABS expressions
        operand is unsigned, then we can eliminate more ABS expressions
        and turned div/mod expression into shift/and expressions.
        and turned div/mod expression into shift/and expressions.
        * fold-const.c (fold): An equality comparison of the address of
        * fold-const.c (fold): An equality comparison of the address of
        two non-weak variables has known compile-time result.
        two non-weak variables has known compile-time result.
2004-02-26  Andrew Pinski  
2004-02-26  Andrew Pinski  
        * tree-ssa-phiopt.c (conditional_replacement):
        * tree-ssa-phiopt.c (conditional_replacement):
        s/tree_dump_flags/dump_flags/.
        s/tree_dump_flags/dump_flags/.
        * tree-ssa-phiopt.c (tree_ssa_phiopt): Split into ...
        * tree-ssa-phiopt.c (tree_ssa_phiopt): Split into ...
        (conditional_replacement): Here.
        (conditional_replacement): Here.
2004-02-26  Andrew MacLeod  
2004-02-26  Andrew MacLeod  
        * tree-ssa.c (find_replaceable_in_bb): Don't repalce expressions in
        * tree-ssa.c (find_replaceable_in_bb): Don't repalce expressions in
        volatile statements.
        volatile statements.
2004-02-25  Richard Henderson  
2004-02-25  Richard Henderson  
        PR opt/14288
        PR opt/14288
        * gimplify.c (gimple_push_cleanup): Add VAR argument.  Set
        * gimplify.c (gimple_push_cleanup): Add VAR argument.  Set
        TREE_NO_WARNING if in a conditional context.
        TREE_NO_WARNING if in a conditional context.
        (gimplify_target_expr): Pass new argument.
        (gimplify_target_expr): Pass new argument.
        * tree-sra.c (lookup_scalar): Copy TREE_NO_WARNING to replacement.
        * tree-sra.c (lookup_scalar): Copy TREE_NO_WARNING to replacement.
2004-02-24  Kazu Hirata  
2004-02-24  Kazu Hirata  
        * doc/invoke.texi: Replace -fdump-tree-all-ssa with
        * doc/invoke.texi: Replace -fdump-tree-all-ssa with
        -fdump-tree-all.
        -fdump-tree-all.
2004-02-24  Kazu Hirata  
2004-02-24  Kazu Hirata  
        PR target/14285
        PR target/14285
        * config/arm/arm.c (arm_compute_func_type): Replace
        * config/arm/arm.c (arm_compute_func_type): Replace
        "current_function_needs_context" with "cfun->static_chain_decl
        "current_function_needs_context" with "cfun->static_chain_decl
        != NULL".
        != NULL".
        (arm_compute_initial_elimination_offset): Likewise.
        (arm_compute_initial_elimination_offset): Likewise.
        * config/h8300/h8300.c (h8300_emit_stack_adjustment):
        * config/h8300/h8300.c (h8300_emit_stack_adjustment):
        Likewise.
        Likewise.
        * config/sh/sh.c (output_stack_adjust): Likewise.
        * config/sh/sh.c (output_stack_adjust): Likewise.
        (sh5_schedule_saves): Likewise.
        (sh5_schedule_saves): Likewise.
        * config/xtensa/xtensa.c (compute_frame_size): Likewise.
        * config/xtensa/xtensa.c (compute_frame_size): Likewise.
2004-02-24  Richard Henderson  
2004-02-24  Richard Henderson  
        * c-simplify.c (c_genericize): s/dump_flags/local_dump_flags/.
        * c-simplify.c (c_genericize): s/dump_flags/local_dump_flags/.
        * predict.c, tree-alias-ander.c, tree-cfg.c, tree-nrv.c,
        * predict.c, tree-alias-ander.c, tree-cfg.c, tree-nrv.c,
        tree-optimize.c, tree-pass.h, tree-sra.c, tree-ssa-alias.c,
        tree-optimize.c, tree-pass.h, tree-sra.c, tree-ssa-alias.c,
        tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c, tree-ssa-dom.c,
        tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c, tree-ssa-dom.c,
        tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
        tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
        tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c:
        tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c:
        s/tree_dump_flags/dump_flags/.
        s/tree_dump_flags/dump_flags/.
2004-02-24  Richard Henderson  
2004-02-24  Richard Henderson  
        * predict.c, tree-alias-ander.c, tree-cfg.c, tree-mudflap.c,
        * predict.c, tree-alias-ander.c, tree-cfg.c, tree-mudflap.c,
        tree-nrv.c, tree-optimize.c, tree-pass.h, tree-profile.c, tree-sra.c,
        tree-nrv.c, tree-optimize.c, tree-pass.h, tree-profile.c, tree-sra.c,
        tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c,
        tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c,
        tree-ssa-dom.c, tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
        tree-ssa-dom.c, tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
        tree-ssa-operands.c, tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c,
        tree-ssa-operands.c, tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c,
        tree-tailcall.c: s/tree_dump_file/dump_file/g.
        tree-tailcall.c: s/tree_dump_file/dump_file/g.
2004-02-24  Diego Novillo  
2004-02-24  Diego Novillo  
        * doc/tree-ssa.texi: Fix formatting mark ups.
        * doc/tree-ssa.texi: Fix formatting mark ups.
2004-02-24  Jeff Law  
2004-02-24  Jeff Law  
        * gimple-low.c (remove_useless_vars): Now static.
        * gimple-low.c (remove_useless_vars): Now static.
        (pass_remove_useless_vars): New.
        (pass_remove_useless_vars): New.
        * tree-flow.h (remove_useless_vars): Remove prototype.
        * tree-flow.h (remove_useless_vars): Remove prototype.
        * tree-nrv.c (struct nrv_data): Remove visited hashtable.
        * tree-nrv.c (struct nrv_data): Remove visited hashtable.
        (finalize_nrv_r): Do not descend into types. No need to update
        (finalize_nrv_r): Do not descend into types. No need to update
        the visited hashtable.
        the visited hashtable.
        (tree_nrv): No need to allocate/free the visited hashtable.
        (tree_nrv): No need to allocate/free the visited hashtable.
        Clear the used flag on the variable's annotation.
        Clear the used flag on the variable's annotation.
        * tree-optimize.c (init_tree_optimizatio_passes): Link in
        * tree-optimize.c (init_tree_optimizatio_passes): Link in
        pass_remove_useless_vars.
        pass_remove_useless_vars.
        * tree-pass.h (pass_remove_useless_vars): Declare.
        * tree-pass.h (pass_remove_useless_vars): Declare.
        * tree-ssa.c (rewrite_out_of_ssa): Do not remove useless vars here.
        * tree-ssa.c (rewrite_out_of_ssa): Do not remove useless vars here.
        * Makefile.in (OBJS-common): Add tree-nrv.o.
        * Makefile.in (OBJS-common): Add tree-nrv.o.
        (tree-nrv.o): Add dependencies.
        (tree-nrv.o): Add dependencies.
        * timevar.def (TV_TREE_NRV): New timevar.
        * timevar.def (TV_TREE_NRV): New timevar.
        * tree-nrv.c: New file implementing NRV on generic trees.
        * tree-nrv.c: New file implementing NRV on generic trees.
        * tree-optimize.c (init_tree_optimization_passes): Link in
        * tree-optimize.c (init_tree_optimization_passes): Link in
        tree_nrv optimization pass.
        tree_nrv optimization pass.
        * tree-pass.h (tree_nrv): Declare.
        * tree-pass.h (tree_nrv): Declare.
        * doc/invoke.texi: Add -fdump-tree-nrv documentation.
        * doc/invoke.texi: Add -fdump-tree-nrv documentation.
2004-02-24  Sebastian Pop  
2004-02-24  Sebastian Pop  
        * tree-flow.h (walk_use_def_chains_fn): Return a boolean.
        * tree-flow.h (walk_use_def_chains_fn): Return a boolean.
        True for stopping the use-def walk, false otherwise.
        True for stopping the use-def walk, false otherwise.
        * tree-ssa-alias.c (collect_points_to_info_r): Same.
        * tree-ssa-alias.c (collect_points_to_info_r): Same.
        Always return false, and never stopping the def-use walk as before.
        Always return false, and never stopping the def-use walk as before.
        * tree-ssa.c (walk_use_def_chains_1): Stop when the result of the
        * tree-ssa.c (walk_use_def_chains_1): Stop when the result of the
        callback function is true.
        callback function is true.
        * doc/tree-ssa.texi: Document the behavior of the callback
        * doc/tree-ssa.texi: Document the behavior of the callback
        function for walk_use_def_chains.
        function for walk_use_def_chains.
2004-02-24  Richard Henderson  
2004-02-24  Richard Henderson  
        * doc/passes.texi: Rewrite.
        * doc/passes.texi: Rewrite.
2004-02-23  Diego Novillo  
2004-02-23  Diego Novillo  
        * Makefile.in (TEXI_GCCINT_FILES): Add cfg.texi and tree-ssa.texi
        * Makefile.in (TEXI_GCCINT_FILES): Add cfg.texi and tree-ssa.texi
        * tree-ssa-alias.c (compute_may_aliases): Update documentation.
        * tree-ssa-alias.c (compute_may_aliases): Update documentation.
        * doc/gccint.texi: Add node for Tree SSA documentation.
        * doc/gccint.texi: Add node for Tree SSA documentation.
        Include tree-ssa.texi.
        Include tree-ssa.texi.
        * doc/tree-ssa.texi: New file.
        * doc/tree-ssa.texi: New file.
2004-02-23  Dale Johannesen 
2004-02-23  Dale Johannesen 
        * config/rs6000/rs6000.md:  Roll in changes from mainline:
        * config/rs6000/rs6000.md:  Roll in changes from mainline:
        (movdf_softfloat64):  Add POWER form of nop.
        (movdf_softfloat64):  Add POWER form of nop.
        (movsf_hardfloat): Ditto, and accept CTR-to-CTR copy.
        (movsf_hardfloat): Ditto, and accept CTR-to-CTR copy.
        (movdf_hardfloat64):  Ditto.
        (movdf_hardfloat64):  Ditto.
2004-02-23  Jeff Law  
2004-02-23  Jeff Law  
        * ggc-page.c (struct page_entry): New field PREV.
        * ggc-page.c (struct page_entry): New field PREV.
        (ggc_alloc): Update PREV field appropriately.
        (ggc_alloc): Update PREV field appropriately.
        (sweep_pages): Likewise.
        (sweep_pages): Likewise.
        (ggc_free): Likewise.  Use PREV field rather than loop to
        (ggc_free): Likewise.  Use PREV field rather than loop to
        improve ggc_free performance.
        improve ggc_free performance.
        * Makefile.in (OBJC-common): Add tree-ssa-copy.o.
        * Makefile.in (OBJC-common): Add tree-ssa-copy.o.
        (tree-ssa-copy.o): Add dependencies.
        (tree-ssa-copy.o): Add dependencies.
        * tree-flow.h (propagate_value, replace_exp): Prototype.
        * tree-flow.h (propagate_value, replace_exp): Prototype.
        (cprop_into_stmt, cprop_into_successor_phis): Likewise.
        (cprop_into_stmt, cprop_into_successor_phis): Likewise.
        * tree-ssa-copy.c: New file, most functions copied from tree-ssa-dom.c
        * tree-ssa-copy.c: New file, most functions copied from tree-ssa-dom.c
        (cprop_into_stmt): Handle pointer & reference types better.
        (cprop_into_stmt): Handle pointer & reference types better.
        * tree-ssa-dom.c (opt_stats_d): Kill uninteresting stats.
        * tree-ssa-dom.c (opt_stats_d): Kill uninteresting stats.
        (dump_dominator_optimization_stats): Corresponding changes.
        (dump_dominator_optimization_stats): Corresponding changes.
        (cprop_into_stmt): Moved into tree-ssa-copy.c.
        (cprop_into_stmt): Moved into tree-ssa-copy.c.
        (propagate_value): Likewise.
        (propagate_value): Likewise.
        (cprop_into_phis): Simplify using code fromi tree-ssa-copy.c.
        (cprop_into_phis): Simplify using code fromi tree-ssa-copy.c.
        (optimize_stmt): Pass additional argument to cprop_into_stmt.
        (optimize_stmt): Pass additional argument to cprop_into_stmt.
        * tree-ssa-pre.c (generate_expr_as_of_bb): Use replace_exp.
        * tree-ssa-pre.c (generate_expr_as_of_bb): Use replace_exp.
        (generate_vops_as_of_bb): Similarly.
        (generate_vops_as_of_bb): Similarly.
2004-02-21  Jan Hubicka  
2004-02-21  Jan Hubicka  
        * cgraphunit.c (decide_is_function_needed): Nested functions of extern
        * cgraphunit.c (decide_is_function_needed): Nested functions of extern
        inline functions don't need to be output.
        inline functions don't need to be output.
        (expand_function): Re-enable sanity check.
        (expand_function): Re-enable sanity check.
2004-02-21  Zdenek Dvorak  
2004-02-21  Zdenek Dvorak  
        * tree-ssa-loop.c (do_while_loop_p): New function.
        * tree-ssa-loop.c (do_while_loop_p): New function.
        (copy_loop_headers): Do not peel do-while loops.
        (copy_loop_headers): Do not peel do-while loops.
2004-02-21  Jan Hubicka  
2004-02-21  Jan Hubicka  
        * tree-cfg.c (cleanup_control_expr_graph): Update profile.
        * tree-cfg.c (cleanup_control_expr_graph): Update profile.
        * tree-cfg.c (disband_implicit_edges): Set fallthru edges correctly.
        * tree-cfg.c (disband_implicit_edges): Set fallthru edges correctly.
        * cfg.c (dump_flow_info): Work on trees too.
        * cfg.c (dump_flow_info): Work on trees too.
        * tree-pretty-print.c (dump_generic_bb_stuff):  Do not touch bb
        * tree-pretty-print.c (dump_generic_bb_stuff):  Do not touch bb
        annotations when not allocated.
        annotations when not allocated.
2004-02-21  Jeff Law  
2004-02-21  Jeff Law  
        * tree-ssa-dom.c (cprop_into_stmt): Look at the type's main variant
        * tree-ssa-dom.c (cprop_into_stmt): Look at the type's main variant
        to determine if the two operands of a copy have equivalent types.
        to determine if the two operands of a copy have equivalent types.
2004-02-20  Jeff Law  
2004-02-20  Jeff Law  
        * tree-flow-inline.h (may_propagate_copy): Do not perform ABNORMAL_PHI
        * tree-flow-inline.h (may_propagate_copy): Do not perform ABNORMAL_PHI
        and DECL_HARD_REGISTER tests on virtual operands.
        and DECL_HARD_REGISTER tests on virtual operands.
        * tree-flow.h (propagate_copy): Kill prototype.
        * tree-flow.h (propagate_copy): Kill prototype.
        (propagate_value): New prototype.
        (propagate_value): New prototype.
        * tree-ssa-dom.c (propagate_copy): Now static.
        * tree-ssa-dom.c (propagate_copy): Now static.
        (propagate_value): No longer static.
        (propagate_value): No longer static.
2004-02-20  Richard Henderson  
2004-02-20  Richard Henderson  
        PR middle-end/14218
        PR middle-end/14218
        * c-simplify.c (mark_labels_r): Move to ...
        * c-simplify.c (mark_labels_r): Move to ...
        * gimplify.c (force_labels_r): ... here, and rename.
        * gimplify.c (force_labels_r): ... here, and rename.
        (gimplify_init_constructor): Invoke it.
        (gimplify_init_constructor): Invoke it.
        * tree-simple.h (force_labels_r): Declare.
        * tree-simple.h (force_labels_r): Declare.
2004-02-20  Richard Henderson  
2004-02-20  Richard Henderson  
        PR opt/14194
        PR opt/14194
        * tree-ssa-ccp.c (substitute_and_fold): Also mark new vars
        * tree-ssa-ccp.c (substitute_and_fold): Also mark new vars
        if fold_stmt was successful.
        if fold_stmt was successful.
2004-02-20  Diego Novillo  
2004-02-20  Diego Novillo  
        * doc/invoke.texi: Add documentation for parameters
        * doc/invoke.texi: Add documentation for parameters
        global-var-threshold and max-aliased-vops.
        global-var-threshold and max-aliased-vops.
        * params.def (PARAM_GLOBAL_VAR_THRESHOLD): Reformat help message.
        * params.def (PARAM_GLOBAL_VAR_THRESHOLD): Reformat help message.
        (PARAM_MAX_ALIASED_VOPS): Rename from PARAM_MAX_ALIAS_SET_SIZE.
        (PARAM_MAX_ALIASED_VOPS): Rename from PARAM_MAX_ALIAS_SET_SIZE.
        * params.h (MAX_ALIASED_VOPS): Rename from MAX_ALIAS_SET_SIZE.
        * params.h (MAX_ALIASED_VOPS): Rename from MAX_ALIAS_SET_SIZE.
        Update all users.
        Update all users.
        * tree-ssa-alias.c (struct alias_map_d): Document fields.
        * tree-ssa-alias.c (struct alias_map_d): Document fields.
        Add fields total_alias_vops, grouped_p and may_aliases.
        Add fields total_alias_vops, grouped_p and may_aliases.
        (struct alias_info): Change fields addressable_vars and
        (struct alias_info): Change fields addressable_vars and
        pointers to malloc'd arrays.  Update all users.
        pointers to malloc'd arrays.  Update all users.
        Add fields num_references and total_alias_vops.
        Add fields num_references and total_alias_vops.
        (compute_may_aliases): Add more comments.
        (compute_may_aliases): Add more comments.
        (init_alias_info): Initialize new fields in struct alias_info.
        (init_alias_info): Initialize new fields in struct alias_info.
        (delete_alias_info): Corresponding changes.
        (delete_alias_info): Corresponding changes.
        (compute_points_to_and_addr_escape): Count references to
        (compute_points_to_and_addr_escape): Count references to
        potentially aliased variables and pointer dereferences.
        potentially aliased variables and pointer dereferences.
        (compute_flow_insensitive_aliasing): Remove old grouping
        (compute_flow_insensitive_aliasing): Remove old grouping
        heuristic.
        heuristic.
        Count the number of virtual operands induced by all the alias
        Count the number of virtual operands induced by all the alias
        sets created and call group_aliases if the number exceeds the
        sets created and call group_aliases if the number exceeds the
        threshold set by --param max-aliased-vops.
        threshold set by --param max-aliased-vops.
        (total_alias_vops_cmp): New.
        (total_alias_vops_cmp): New.
        (group_aliases_into): New.
        (group_aliases_into): New.
        (group_aliases): New.
        (group_aliases): New.
        * tree-ssa-operands.c (get_expr_operands): Change dump file
        * tree-ssa-operands.c (get_expr_operands): Change dump file
        message when no flow-sensitive alias information is available.
        message when no flow-sensitive alias information is available.
        (add_stmt_operand): Reformat comment.
        (add_stmt_operand): Reformat comment.
        * tree-ssa.c (init_tree_ssa): Don't call bitmap_clear.
        * tree-ssa.c (init_tree_ssa): Don't call bitmap_clear.
        * tree-simple.c (get_base_decl): Fix typo in comment.
        * tree-simple.c (get_base_decl): Fix typo in comment.
        * tree-pretty-print.c (print_call_name): Handle matrices of
        * tree-pretty-print.c (print_call_name): Handle matrices of
        function pointers.
        function pointers.
2004-02-20  Zdenek Dvorak  
2004-02-20  Zdenek Dvorak  
        * Makefile.in (tree-ssa-loop.o): Add tree-inline.h dependency.
        * Makefile.in (tree-ssa-loop.o): Add tree-inline.h dependency.
        * basic-block.h (struct reorder_block_def): Moved from cfglayout.h.
        * basic-block.h (struct reorder_block_def): Moved from cfglayout.h.
        (alloc_rbi_pool, initialize_bb_rbi, free_rbi_pool): New.
        (alloc_rbi_pool, initialize_bb_rbi, free_rbi_pool): New.
        * bb-reorder.c (copy_bb): Use cfghooks for bb duplication.
        * bb-reorder.c (copy_bb): Use cfghooks for bb duplication.
        * cfg.c (rbi_pool): New variable.
        * cfg.c (rbi_pool): New variable.
        (alloc_rbi_pool, free_rbi_pool, initialize_bb_rbi): New functions.
        (alloc_rbi_pool, free_rbi_pool, initialize_bb_rbi): New functions.
        * cfghooks.c (can_duplicate_block_p, duplicate_block): New functions.
        * cfghooks.c (can_duplicate_block_p, duplicate_block): New functions.
        * cfghooks.h (struct cfg_hooks): Add can_duplicate_block_p and
        * cfghooks.h (struct cfg_hooks): Add can_duplicate_block_p and
        duplicate_block hooks.
        duplicate_block hooks.
        (can_duplicate_block_p, duplicate_block): Declare.
        (can_duplicate_block_p, duplicate_block): Declare.
        * cfglayout.c (cfg_layout_pool, cfg_layout_initialize_rbi): Removed.
        * cfglayout.c (cfg_layout_pool, cfg_layout_initialize_rbi): Removed.
        (fixup_reorder_chain): Use initialize_bb_rbi.
        (fixup_reorder_chain): Use initialize_bb_rbi.
        (cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Hookized.
        (cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Hookized.
        (cfg_layout_initialize): Use cfg.c rbi pool manipulation functions.
        (cfg_layout_initialize): Use cfg.c rbi pool manipulation functions.
        (can_copy_bbs_p, copy_bbs): Use cfghooks for bb duplication.
        (can_copy_bbs_p, copy_bbs): Use cfghooks for bb duplication.
        * cfglayout.h (typedef struct reorder_block_def): Moved to
        * cfglayout.h (typedef struct reorder_block_def): Moved to
        basic_block.h.
        basic_block.h.
        (cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Declaration
        (cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Declaration
        removed.
        removed.
        * cfgrtl.c (cfg_layout_create_basic_block): Use initialize_bb_rbi.
        * cfgrtl.c (cfg_layout_create_basic_block): Use initialize_bb_rbi.
        (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Fill in can_duplicate_block_p
        (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Fill in can_duplicate_block_p
        and duplicate_block fields.
        and duplicate_block fields.
        * common.opt (ftree-ch): Add.
        * common.opt (ftree-ch): Add.
        * flags.h (flag_tree_ch): Declare.
        * flags.h (flag_tree_ch): Declare.
        * jump.c (next_nonnote_insn_in_loop, duplicate_loop_exit_test,
        * jump.c (next_nonnote_insn_in_loop, duplicate_loop_exit_test,
        copy_loop_headers): Removed.
        copy_loop_headers): Removed.
        * loop-unswitch.c (unswitch_loop): Use cfghooks for bb duplication.
        * loop-unswitch.c (unswitch_loop): Use cfghooks for bb duplication.
        * opts.c (decode_options): Enable flag_tree_ch at -O1.
        * opts.c (decode_options): Enable flag_tree_ch at -O1.
        (common_handle_option): Handle -ftree_ch.
        (common_handle_option): Handle -ftree_ch.
        * rtl.h (copy_loop_headers): Declaration removed.
        * rtl.h (copy_loop_headers): Declaration removed.
        * timevar.def (TV_TREE_CH): New.
        * timevar.def (TV_TREE_CH): New.
        * toplev.c (flag_tree_ch): New.
        * toplev.c (flag_tree_ch): New.
        (rest_of_compilation): Do not call copy_loop_headers.
        (rest_of_compilation): Do not call copy_loop_headers.
        * tracer.c (tail_duplicate): Use cfghooks for bb duplication.
        * tracer.c (tail_duplicate): Use cfghooks for bb duplication.
        * tree-cfg.c (build_tree_cfg): Call alloc_rbi_pool.
        * tree-cfg.c (build_tree_cfg): Call alloc_rbi_pool.
        (create_bb): Call initialize_bb_rbi.
        (create_bb): Call initialize_bb_rbi.
        (delete_tree_cfg): Call free_rbi_pool.
        (delete_tree_cfg): Call free_rbi_pool.
        (tree_duplicate_bb): Hookize.
        (tree_duplicate_bb): Hookize.
        (tree_can_duplicate_bb_p): New.
        (tree_can_duplicate_bb_p): New.
        (tree_cfg_hooks): Fill in can_duplicate_block_p and duplicate_block
        (tree_cfg_hooks): Fill in can_duplicate_block_p and duplicate_block
        fields.
        fields.
        * tree-flow.h (tree_duplicate_bb): Declaration removed.
        * tree-flow.h (tree_duplicate_bb): Declaration removed.
        * tree-optimize.c (init_tree_optimization_passes): Add pass_ch.
        * tree-optimize.c (init_tree_optimization_passes): Add pass_ch.
        * tree-pass.h (pass_ch): Declare.
        * tree-pass.h (pass_ch): Declare.
        * tree-ssa-loop.c: Include tree-inline.h.
        * tree-ssa-loop.c: Include tree-inline.h.
        (call_expr_p, should_duplicate_loop_header_p, mark_defs_for_rewrite,
        (call_expr_p, should_duplicate_loop_header_p, mark_defs_for_rewrite,
        duplicate_blocks, copy_loop_headers, gate_ch): New functions.
        duplicate_blocks, copy_loop_headers, gate_ch): New functions.
        (pass_ch): New.
        (pass_ch): New.
        * doc/invoke.texi (-fdump-tree-ch, -ftree-ch): Document.
        * doc/invoke.texi (-fdump-tree-ch, -ftree-ch): Document.
2004-02-19  David Edelsohn  
2004-02-19  David Edelsohn  
        * config/rs6000/aix.h (MFWRAP_SPEC): Define.
        * config/rs6000/aix.h (MFWRAP_SPEC): Define.
        (MFLIB_SPEC): Define.
        (MFLIB_SPEC): Define.
2004-02-19  Jeff Law  
2004-02-19  Jeff Law  
        * tree-ssa-phiopt.c (tree_ssa_phiopt): TRUTH_NOT_EXPR is valid
        * tree-ssa-phiopt.c (tree_ssa_phiopt): TRUTH_NOT_EXPR is valid
        gimple code.
        gimple code.
2004-02-19  Steven Bosscher  
2004-02-19  Steven Bosscher  
        * tree-cfg.c (cleanup_dead_labels): New function to remove
        * tree-cfg.c (cleanup_dead_labels): New function to remove
        redundant labels.
        redundant labels.
        Remove the RTL inliner.
        Remove the RTL inliner.
        * calls.c (try_to_integrate): Remove.
        * calls.c (try_to_integrate): Remove.
        (expand_call): Do not try to expand calls inline.
        (expand_call): Do not try to expand calls inline.
        * dbxout.c (dbxout_symbol_location): Don't mention integrate.c
        * dbxout.c (dbxout_symbol_location): Don't mention integrate.c
        in comments.
        in comments.
        * expmed.c (extract_fixed_bit_field): Always propagate the
        * expmed.c (extract_fixed_bit_field): Always propagate the
        target for the shift if it is a REG.
        target for the shift if it is a REG.
        * expr.c (emit_move_insn_1): Don't generate inline warnings.
        * expr.c (emit_move_insn_1): Don't generate inline warnings.
        (expand_expr_real_1): Don't look at inline_function_decl.
        (expand_expr_real_1): Don't look at inline_function_decl.
        Don't output inlined functions here.
        Don't output inlined functions here.
        * expr.h (expand_inline_function): Remove prototype.
        * expr.h (expand_inline_function): Remove prototype.
        * emit-rtl.c (copy_most_rtx): Don't copy the integrated flag.
        * emit-rtl.c (copy_most_rtx): Don't copy the integrated flag.
        Copy the new return_val flag.
        Copy the new return_val flag.
        * final.c (final): Don't look at RTX_INTEGRATED_P.
        * final.c (final): Don't look at RTX_INTEGRATED_P.
        * cfgrtl.c (create_basic_block_structure): Likewise.
        * cfgrtl.c (create_basic_block_structure): Likewise.
        * haifa-sched.c (priority): Likewise.
        * haifa-sched.c (priority): Likewise.
        (restore_line_notes): Likewise.
        (restore_line_notes): Likewise.
        * function.c (inline_function_decl): Remove.
        * function.c (inline_function_decl): Remove.
        (put_var_into_stack): Don't use it.
        (put_var_into_stack): Don't use it.
        (fix_lexical_addr): Likewise.
        (fix_lexical_addr): Likewise.
        * function.c (inline_function_decl): Remove extern declaration.
        * function.c (inline_function_decl): Remove extern declaration.
        * genattrtab.c (ATTR_PERMANENT_P): Use the return_val flag
        * genattrtab.c (ATTR_PERMANENT_P): Use the return_val flag
        instead of the integrated flag.
        instead of the integrated flag.
        * integrate.c (INTEGRATE_THRESHOLD): Remove.
        * integrate.c (INTEGRATE_THRESHOLD): Remove.
        (setup_initial_hard_reg_value_integration): Likewise.
        (setup_initial_hard_reg_value_integration): Likewise.
        (initialize_for_inline): Likewise.
        (initialize_for_inline): Likewise.
        (note_modified_parmregs): Likewise.
        (note_modified_parmregs): Likewise.
        (integrate_parm_decls): Likewise.
        (integrate_parm_decls): Likewise.
        (process_reg_param): Likewise.
        (process_reg_param): Likewise.
        (save_parm_insns): Likewise.
        (save_parm_insns): Likewise.
        (copy_insn_list): Likewise.
        (copy_insn_list): Likewise.
        (copy_insn_notes): Likewise.
        (copy_insn_notes): Likewise.
        (compare_blocks): Likewise.
        (compare_blocks): Likewise.
        (find_block): Likewise.
        (find_block): Likewise.
        (inlining): Likewise.
        (inlining): Likewise.
        (function_cannot_inline_p): Likewise.
        (function_cannot_inline_p): Likewise.
        (parmdecl_map): Likewise.
        (parmdecl_map): Likewise.
        (in_nonparam_insns): Likewise.
        (in_nonparam_insns): Likewise.
        (save_for_inline): Likewise.
        (save_for_inline): Likewise.
        (FIXED_BASE_PLUS): Likewise.
        (FIXED_BASE_PLUS): Likewise.
        (expand_inline_function): Likewise.
        (expand_inline_function): Likewise.
        (copy_rtx_and_substitute): Don't look at map->integrating,
        (copy_rtx_and_substitute): Don't look at map->integrating,
        map->inline_target, and inlining, since we are never copying
        map->inline_target, and inlining, since we are never copying
        for integrating.
        for integrating.
        Don't abort on RTX_INTEGRATED_P.
        Don't abort on RTX_INTEGRATED_P.
        (old_fun): Remove.
        (old_fun): Remove.
        (output_inline_function): Remove.
        (output_inline_function): Remove.
        * integrate.h (struct inline_map): Remove fields integrating,
        * integrate.h (struct inline_map): Remove fields integrating,
        block_map, leaf_reg_map, inline_target, and local_return_label.
        block_map, leaf_reg_map, inline_target, and local_return_label.
        * print-rtl.c (print_rtx): Don't print the integrated flag.
        * print-rtl.c (print_rtx): Don't print the integrated flag.
        Print the return_val flag.
        Print the return_val flag.
        * rtl.h (struct rtx_def): Replace the integrated flag with the
        * rtl.h (struct rtx_def): Replace the integrated flag with the
        return_val flag.
        return_val flag.
        (RTX_INTEGRATED_P): Remove.
        (RTX_INTEGRATED_P): Remove.
        (notice_rtl_inlining_of_deferred_constant): Remove prototype.
        (notice_rtl_inlining_of_deferred_constant): Remove prototype.
        * stmt.c (force_label_rtx): Don't look at inline_function_decl.
        * stmt.c (force_label_rtx): Don't look at inline_function_decl.
        * toplev.c (rest_of_handle_inlining): Remove.
        * toplev.c (rest_of_handle_inlining): Remove.
        (rest_of_compilation): Don't call it, and never jump to exit.
        (rest_of_compilation): Don't call it, and never jump to exit.
        Call convert_from_eh_region_ranges.
        Call convert_from_eh_region_ranges.
        (wrapup_global_declarations): Don't output nested inlined functions.
        (wrapup_global_declarations): Don't output nested inlined functions.
        * tree.h (function_cannot_inline_p): Remove prototype.
        * tree.h (function_cannot_inline_p): Remove prototype.
        (save_for_inline): Ditto.
        (save_for_inline): Ditto.
        (output_inline_function): Ditto.
        (output_inline_function): Ditto.
        * unroll.c (unroll_loop): Don't clear map->inline_target.
        * unroll.c (unroll_loop): Don't clear map->inline_target.
        * varasm.c (notice_rtl_inlining_of_deferred_constant): Remove.
        * varasm.c (notice_rtl_inlining_of_deferred_constant): Remove.
        * system.h: Poison INTEGRATE_THRESHOLD.
        * system.h: Poison INTEGRATE_THRESHOLD.
        * config/avr/avr.h: Remove define.
        * config/avr/avr.h: Remove define.
        * config/ip2k/ip2k.h: Likewise.
        * config/ip2k/ip2k.h: Likewise.
        * unwind-sjlj.c (uw_install_context): Make a proper static inline
        * unwind-sjlj.c (uw_install_context): Make a proper static inline
        function.
        function.
        * doc/rtl.texi: Remove references to the integrated flag.
        * doc/rtl.texi: Remove references to the integrated flag.
        * doc/tm.texi: Remove documentation of INTEGRATE_THRESHOLD.
        * doc/tm.texi: Remove documentation of INTEGRATE_THRESHOLD.
2004-02-17  Andrew Macleod  
2004-02-17  Andrew Macleod  
        * tree-ssa-live.c (coalesce_tpa_members): Don't coalesce partitions
        * tree-ssa-live.c (coalesce_tpa_members): Don't coalesce partitions
        which are not in the same TPA group.
        which are not in the same TPA group.
        * tree-ssa.c (rewrite_out_of_ssa): Coalesce via list first.
        * tree-ssa.c (rewrite_out_of_ssa): Coalesce via list first.
2004-02-17  Brian Booth  
2004-02-17  Brian Booth  
        * tree-ssa-ccp.c (substitute_and_fold): Update stmt after
        * tree-ssa-ccp.c (substitute_and_fold): Update stmt after
        calling fold_stmt.
        calling fold_stmt.
2004-02-16  Andrew Pinski  
2004-02-16  Andrew Pinski  
        * config/rs6000/rs6000.c (output_function_profiler): Check
        * config/rs6000/rs6000.c (output_function_profiler): Check
        cfun->static_chain_decl instead of current_function_needs_context.
        cfun->static_chain_decl instead of current_function_needs_context.
2004-02-16  Jeff Law  
2004-02-16  Jeff Law  
        * tree-ssa.dse.c (dse_optimize_stmt): Dump info when we delete
        * tree-ssa.dse.c (dse_optimize_stmt): Dump info when we delete
        stores.
        stores.
        * tree-ssa-dse.c: Update comments.
        * tree-ssa-dse.c: Update comments.
        * Makefile.in (OBJS-common): Add tree-ssa-dse.o
        * Makefile.in (OBJS-common): Add tree-ssa-dse.o
        (tree-ssa-dse.o): Add dependencies.
        (tree-ssa-dse.o): Add dependencies.
        * common.opt (ftree-dse): New option.
        * common.opt (ftree-dse): New option.
        * flags.h (flag_tree_dse): New.
        * flags.h (flag_tree_dse): New.
        (flag_tree_dom): Fix comments.
        (flag_tree_dom): Fix comments.
        * opts.c (decode_options): Turn on flag_tree_dse.
        * opts.c (decode_options): Turn on flag_tree_dse.
        (common_handle_option): Handle  OPT_ftree_dse.
        (common_handle_option): Handle  OPT_ftree_dse.
        * timevar.def (TV_TREE_PHIOPT): Update text.
        * timevar.def (TV_TREE_PHIOPT): Update text.
        (TV_TREE_DSE): New timevar.
        (TV_TREE_DSE): New timevar.
        * toplev.c (flag_tree_dse): New.
        * toplev.c (flag_tree_dse): New.
        (flag_tree_dom): Fix comments.
        (flag_tree_dom): Fix comments.
        (lang_independent_options): Add -ftree-dse.
        (lang_independent_options): Add -ftree-dse.
        * tree-dfa.c (redirect_immediate_use): New function.
        * tree-dfa.c (redirect_immediate_use): New function.
        (redirect_immediate_uses): New function.
        (redirect_immediate_uses): New function.
        * tree-flow.h (stmt_ann_d): Add UID field.
        * tree-flow.h (stmt_ann_d): Add UID field.
        (redirect_immediate_uses): Declare.
        (redirect_immediate_uses): Declare.
        * tree-optimize.c (init_tree_optimization_passes): Link in DSE pass.
        * tree-optimize.c (init_tree_optimization_passes): Link in DSE pass.
        * tree-pass.h (pass_dse): Declare.
        * tree-pass.h (pass_dse): Declare.
        * tree-ssa-dse.c: New file implementing DSE.
        * tree-ssa-dse.c: New file implementing DSE.
        * doc/invoke.texi: Document new option.
        * doc/invoke.texi: Document new option.
2004-02-16  Richard Henderson  
2004-02-16  Richard Henderson  
        * tree-nested.c: New file.
        * tree-nested.c: New file.
        * Makefile.in (OBJS-common, GTFILES, tree-nested.o): Add it.
        * Makefile.in (OBJS-common, GTFILES, tree-nested.o): Add it.
        * builtin-types.def (BT_FN_VOID_PTR_PTR, BT_FN_VOID_PTR_PTR_PTR): New.
        * builtin-types.def (BT_FN_VOID_PTR_PTR, BT_FN_VOID_PTR_PTR_PTR): New.
        * builtins.c (expand_builtin_nonlocal_goto): New.
        * builtins.c (expand_builtin_nonlocal_goto): New.
        (expand_builtin_apply): Fix prepare_call_address args.
        (expand_builtin_apply): Fix prepare_call_address args.
        (round_trampoline_addr): Move from function.c.
        (round_trampoline_addr): Move from function.c.
        (expand_builtin_init_trampoline): New.
        (expand_builtin_init_trampoline): New.
        (expand_builtin_adjust_trampoline): New.
        (expand_builtin_adjust_trampoline): New.
        (expand_builtin): Invoke them.
        (expand_builtin): Invoke them.
        (build_function_call_expr): Add CALL_EXPR chain operand.
        (build_function_call_expr): Add CALL_EXPR chain operand.
        * builtins.def (BUILT_IN_INIT_TRAMPOLINE,
        * builtins.def (BUILT_IN_INIT_TRAMPOLINE,
        BUILT_IN_ADJUST_TRAMPOLINE, BUILT_IN_NONLOCAL_GOTO): New.
        BUILT_IN_ADJUST_TRAMPOLINE, BUILT_IN_NONLOCAL_GOTO): New.
        * c-decl.c (finish_function): Call lower_nested_functions.
        * c-decl.c (finish_function): Call lower_nested_functions.
        (c_expand_decl): Don't declare_nonlocal_label.
        (c_expand_decl): Don't declare_nonlocal_label.
        * calls.c (prepare_call_address): Replace fndecl arg with a
        * calls.c (prepare_call_address): Replace fndecl arg with a
        precomputed static chain value.
        precomputed static chain value.
        (expand_call): Precompute the static chain value.  Use
        (expand_call): Precompute the static chain value.  Use
        update_nonlocal_goto_save_area.
        update_nonlocal_goto_save_area.
        * cgraph.c (cgraph_mark_reachable_node): Don't force nested
        * cgraph.c (cgraph_mark_reachable_node): Don't force nested
        functions to be reachable.
        functions to be reachable.
        (cgraph_clone_node): Don't abort cloning functions containing
        (cgraph_clone_node): Don't abort cloning functions containing
        nested functions.
        nested functions.
        * cgraphunit.c (cgraph_assemble_pending_functions): Don't do
        * cgraphunit.c (cgraph_assemble_pending_functions): Don't do
        anything special for nested functions.
        anything special for nested functions.
        (cgraph_mark_functions_to_output): Likewise.
        (cgraph_mark_functions_to_output): Likewise.
        (cgraph_estimate_growth, cgraph_clone_inlined_nodes): Likewise.
        (cgraph_estimate_growth, cgraph_clone_inlined_nodes): Likewise.
        (cgraph_optimize): Likewise.
        (cgraph_optimize): Likewise.
        (cgraph_finalize_function): Don't zap DECL_SAVED_INSNS.
        (cgraph_finalize_function): Don't zap DECL_SAVED_INSNS.
        (cgraph_expand_function): Allow functions to not be emitted.
        (cgraph_expand_function): Allow functions to not be emitted.
        * defaults.h (TRAMPOLINE_ALIGNMENT): Move from function.c.
        * defaults.h (TRAMPOLINE_ALIGNMENT): Move from function.c.
        * dwarf2out.c (gen_subprogram_die): Generate DW_AT_static_link.
        * dwarf2out.c (gen_subprogram_die): Generate DW_AT_static_link.
        * emit-rtl.c (maybe_set_first_label_num): New.
        * emit-rtl.c (maybe_set_first_label_num): New.
        * explow.c (update_nonlocal_goto_save_area): New.
        * explow.c (update_nonlocal_goto_save_area): New.
        (allocate_dynamic_stack_space): Use it.
        (allocate_dynamic_stack_space): Use it.
        * expr.c (expand_expr_real_1) : Don't force_label_rtx.
        * expr.c (expand_expr_real_1) : Don't force_label_rtx.
        : Ignore the possibility of non-local labels.
        : Ignore the possibility of non-local labels.
        : Don't do trampoline_address.
        : Don't do trampoline_address.
        * expr.h (lookup_static_chain): Remove.
        * expr.h (lookup_static_chain): Remove.
        (prepare_call_address): Update 2nd arg.
        (prepare_call_address): Update 2nd arg.
        (update_nonlocal_goto_save_area): Declare.
        (update_nonlocal_goto_save_area): Declare.
        * final.c (profile_function): Update static chain test.
        * final.c (profile_function): Update static chain test.
        * function.c (TRAMPOLINE_ALIGNMENT): Move to defaults.h.
        * function.c (TRAMPOLINE_ALIGNMENT): Move to defaults.h.
        (trampolines_created): Move to varasm.c.
        (trampolines_created): Move to varasm.c.
        (free_after_compilation): Update for removed fields.
        (free_after_compilation): Update for removed fields.
        (allocate_struct_function): Likewise.
        (allocate_struct_function): Likewise.
        (delete_handlers, lookup_static_chain): Remove.
        (delete_handlers, lookup_static_chain): Remove.
        (fix_lexical_addr): Don't consider non-local variable refs.
        (fix_lexical_addr): Don't consider non-local variable refs.
        (trampoline_address): Remove.
        (trampoline_address): Remove.
        (round_trampoline_addr): Move to builtins.c.
        (round_trampoline_addr): Move to builtins.c.
        (adjust_trampoline_addr): Remove.
        (adjust_trampoline_addr): Remove.
        (expand_function_start): Update for changes to static chain
        (expand_function_start): Update for changes to static chain
        and nonlocal goto handling.
        and nonlocal goto handling.
        (initial_trampoline): Move to varasm.c.
        (initial_trampoline): Move to varasm.c.
        (expand_function_end): Don't build trampolines or kill
        (expand_function_end): Don't build trampolines or kill
        unreferenced nonlocal goto labels.
        unreferenced nonlocal goto labels.
        * function.h (struct function): Remove x_nonlocal_labels,
        * function.h (struct function): Remove x_nonlocal_labels,
        x_nonlocal_goto_handler_slots, x_nonlocal_goto_stack_level,
        x_nonlocal_goto_handler_slots, x_nonlocal_goto_stack_level,
        x_context_display, x_trampoline_list, needs_context.
        x_context_display, x_trampoline_list, needs_context.
        Add static_chain_decl, nonlocal_goto_save_area.
        Add static_chain_decl, nonlocal_goto_save_area.
        * gimple-low.c (record_vars): Don't record functions.
        * gimple-low.c (record_vars): Don't record functions.
        * gimplify.c (declare_tmp_vars): Export.
        * gimplify.c (declare_tmp_vars): Export.
        (create_artificial_label): Set type.
        (create_artificial_label): Set type.
        (gimplify_expr): Don't consider nonlocal gotos.
        (gimplify_expr): Don't consider nonlocal gotos.
        * integrate.c (expand_inline_function): Kill lookup_static_chain ref.
        * integrate.c (expand_inline_function): Kill lookup_static_chain ref.
        * jump.c (any_uncondjump_p): Reject nonlocal goto.
        * jump.c (any_uncondjump_p): Reject nonlocal goto.
        * rtl.h (maybe_set_first_label_num): Declare.
        * rtl.h (maybe_set_first_label_num): Declare.
        * stmt.c (label_rtx): Set LABEL_PRESERVE_P appropriately.
        * stmt.c (label_rtx): Set LABEL_PRESERVE_P appropriately.
        (expand_label): Handle DECL_NONLOCAL and FORCED_LABEL.
        (expand_label): Handle DECL_NONLOCAL and FORCED_LABEL.
        (declare_nonlocal_label): Remove.
        (declare_nonlocal_label): Remove.
        (expand_goto): Don't handle nonlocal gotos.
        (expand_goto): Don't handle nonlocal gotos.
        (expand_nl_handler_label): Remove.
        (expand_nl_handler_label): Remove.
        (expand_nl_goto_receivers): Remove.
        (expand_nl_goto_receivers): Remove.
        (expand_end_bindings): Don't expand_nl_goto_receivers.  Use
        (expand_end_bindings): Don't expand_nl_goto_receivers.  Use
        update_nonlocal_goto_save_area.
        update_nonlocal_goto_save_area.
        * tree-cfg.c (make_edges): Handle abnormal edges out of block
        * tree-cfg.c (make_edges): Handle abnormal edges out of block
        falling through to EXIT.
        falling through to EXIT.
        (make_ctrl_stmt_edges): Don't check GOTO_EXPR for nonlocal goto.
        (make_ctrl_stmt_edges): Don't check GOTO_EXPR for nonlocal goto.
        Handle computed goto with no destinations.
        Handle computed goto with no destinations.
        (tree_can_merge_blocks_p): Don't merge blocks with nonlocal labels.
        (tree_can_merge_blocks_p): Don't merge blocks with nonlocal labels.
        (remove_useless_stmts_label, stmt_starts_bb_p): Likewise.
        (remove_useless_stmts_label, stmt_starts_bb_p): Likewise.
        (tree_forwarder_block_p): Likewise.
        (tree_forwarder_block_p): Likewise.
        (nonlocal_goto_p): Remove.
        (nonlocal_goto_p): Remove.
        (tree_verify_flow_info): Update to match.
        (tree_verify_flow_info): Update to match.
        * tree-dump.c (dump_files): Add tree-nested.
        * tree-dump.c (dump_files): Add tree-nested.
        * tree-flow.h (nonlocal_goto_p): Remove.
        * tree-flow.h (nonlocal_goto_p): Remove.
        * tree-inline.c (setup_one_parameter): Split out from ...
        * tree-inline.c (setup_one_parameter): Split out from ...
        (initialize_inlined_parameters): ... here.  Handle static chain.
        (initialize_inlined_parameters): ... here.  Handle static chain.
        (inline_forbidden_p_1): Update nonlocal goto check.
        (inline_forbidden_p_1): Update nonlocal goto check.
        (expand_call_inline): Disable mysterious cgraph abort.
        (expand_call_inline): Disable mysterious cgraph abort.
        * tree-optimize.c (tree_rest_of_compilation): Save DECL_SAVED_INSNS.
        * tree-optimize.c (tree_rest_of_compilation): Save DECL_SAVED_INSNS.
        * tree-pretty-print.c (dump_generic_node): Print static chain
        * tree-pretty-print.c (dump_generic_node): Print static chain
        and nonlocal label.
        and nonlocal label.
        * tree-simple.h (declare_tmp_vars): Declare.
        * tree-simple.h (declare_tmp_vars): Declare.
        (lower_nested_functions): Declare.
        (lower_nested_functions): Declare.
        * tree-ssa-dom.c (propagate_value): Avoid sharing problems.
        * tree-ssa-dom.c (propagate_value): Avoid sharing problems.
        * tree-ssa-operands.c (get_expr_operands): Walk static chain
        * tree-ssa-operands.c (get_expr_operands): Walk static chain
        field of call_expr.
        field of call_expr.
        * tree.def (CALL_EXPR): Add static chain operand.
        * tree.def (CALL_EXPR): Add static chain operand.
        * tree.h (NONLOCAL_LABEL): Remove.
        * tree.h (NONLOCAL_LABEL): Remove.
        (TDI_nested): New.
        (TDI_nested): New.
        * varasm.c (TRAMPOLINE_ALIGNMENT): Remove.
        * varasm.c (TRAMPOLINE_ALIGNMENT): Remove.
        (initial_trampoline): Move from function.c.
        (initial_trampoline): Move from function.c.
        (assemble_trampoline_template): Set and return it.
        (assemble_trampoline_template): Set and return it.
        (trampolines_created): Move from function.c.
        (trampolines_created): Move from function.c.
2004-02-16  Steven Bosscher  
2004-02-16  Steven Bosscher  
        * tree-flow.h (cleanup_control_expr_graph): Don't declare here.
        * tree-flow.h (cleanup_control_expr_graph): Don't declare here.
        * tree-cfg.c (cleanup_control_expr_graph): Make static.
        * tree-cfg.c (cleanup_control_expr_graph): Make static.
        (find_edge_taken_cond_expr): Return an edge if the true and false
        (find_edge_taken_cond_expr): Return an edge if the true and false
        edges of a branch lead to the same basic block.
        edges of a branch lead to the same basic block.
2004-02-13  Diego Novillo  
2004-02-13  Diego Novillo  
        * tree-phinodes.c (resize_phi_node): Do not use ggc_realloc to
        * tree-phinodes.c (resize_phi_node): Do not use ggc_realloc to
        allocate a new PHI node.
        allocate a new PHI node.
2004-02-12  Diego Novillo  
2004-02-12  Diego Novillo  
        * tree-flow.h (kill_redundant_phi_nodes): Remove declaration.
        * tree-flow.h (kill_redundant_phi_nodes): Remove declaration.
        * tree-optimize.c (init_tree_optimization_passes): Add
        * tree-optimize.c (init_tree_optimization_passes): Add
        pass_redundant_phi after DOM and CCP.
        pass_redundant_phi after DOM and CCP.
        (execute_todo): Do not call kill_redundant_phi_nodes.
        (execute_todo): Do not call kill_redundant_phi_nodes.
        * tree-pass.h (TODO_redundant_phi): Remove.
        * tree-pass.h (TODO_redundant_phi): Remove.
        Update all users.
        Update all users.
        Adjust values for all the other TODO_* entries.
        Adjust values for all the other TODO_* entries.
        (pass_redundant_phi): Declare.
        (pass_redundant_phi): Declare.
        * tree-ssa.c (replace_immediate_uses): Call mark_new_vars_to_rename
        * tree-ssa.c (replace_immediate_uses): Call mark_new_vars_to_rename
        if a pointer was replaced.
        if a pointer was replaced.
        (kill_redundant_phi_nodes): Make static.
        (kill_redundant_phi_nodes): Make static.
        (pass_redundant_phi): Define.
        (pass_redundant_phi): Define.
2004-02-12  Dale Johannesen  
2004-02-12  Dale Johannesen  
        * Makefile.in (OBJS-common): Add rtl-profile.o, tree-profile.o.
        * Makefile.in (OBJS-common): Add rtl-profile.o, tree-profile.o.
        (profile.o): Add tree-flow.h dependency.
        (profile.o): Add tree-flow.h dependency.
        (rtl-profile.o): New rule.
        (rtl-profile.o): New rule.
        (tree-profile.o): New rule.
        (tree-profile.o): New rule.
        (GTFILES): Add tree-profile.c, rtl-profile.c.
        (GTFILES): Add tree-profile.c, rtl-profile.c.
        * basic-block.h (flow_call_edges_add): Remove.
        * basic-block.h (flow_call_edges_add): Remove.
        * cfganal.c (need_fake_edge_p): Move to cfgrtl.c.
        * cfganal.c (need_fake_edge_p): Move to cfgrtl.c.
        (flow_call_edges_add): Move to cfgrtl.c.
        (flow_call_edges_add): Move to cfgrtl.c.
        * cfghooks.c: (block_ends_with_call_p): New.
        * cfghooks.c: (block_ends_with_call_p): New.
        (block_ends_with_condjump_p): New.
        (block_ends_with_condjump_p): New.
        (flow_call_edges_add): New.
        (flow_call_edges_add): New.
        * cfghooks.h: (struct cfg_hooks): add block_ends_with_call_p,
        * cfghooks.h: (struct cfg_hooks): add block_ends_with_call_p,
        block_ends_with_condjump_p, flow_call_edges_add.
        block_ends_with_condjump_p, flow_call_edges_add.
        (block_ends_with_call_p): New declaration.
        (block_ends_with_call_p): New declaration.
        (block_ends_with_condjump_p): New declaration.
        (block_ends_with_condjump_p): New declaration.
        (flow_call_edges_add): New declaration.
        (flow_call_edges_add): New declaration.
        * cfgrtl.c (rtl_block_ends_with_call_p): New.
        * cfgrtl.c (rtl_block_ends_with_call_p): New.
        (rtl_block_ends_with_condjump_p): New.
        (rtl_block_ends_with_condjump_p): New.
        (need_fake_edge_p): Moved from cfganal.c.
        (need_fake_edge_p): Moved from cfganal.c.
        (rtl_flow_call_edges_add): Moved from cfganal.c (flow_call_edges_add).
        (rtl_flow_call_edges_add): Moved from cfganal.c (flow_call_edges_add).
        (rtl_cfg_hooks): Add rtl_block_ends_with_call_p,
        (rtl_cfg_hooks): Add rtl_block_ends_with_call_p,
        rtl_block_ends_with_condjump_p, rtl_flow_call_edges_add.
        rtl_block_ends_with_condjump_p, rtl_flow_call_edges_add.
        (cfg_layout_rtl_cfg_hooks): Ditto.
        (cfg_layout_rtl_cfg_hooks): Ditto.
        * common.opt (ftree-based-profiling): New.
        * common.opt (ftree-based-profiling): New.
        * coverage.c (tree_ctr_tables): New.
        * coverage.c (tree_ctr_tables): New.
        (coverage_counter_alloc): Use it.
        (coverage_counter_alloc): Use it.
        (build_ctr_info_value): Ditto.
        (build_ctr_info_value): Ditto.
        (coverage_counter_ref): Ditto.  Rename to rtl_coverage_counter_ref.
        (coverage_counter_ref): Ditto.  Rename to rtl_coverage_counter_ref.
        (tree_coverage_counter_ref): New.
        (tree_coverage_counter_ref): New.
        * coverage.h (coverage_counter_ref): Remove declaration.
        * coverage.h (coverage_counter_ref): Remove declaration.
        (rtl_coverage_counter_ref): New declaration.
        (rtl_coverage_counter_ref): New declaration.
        (tree_coverage_counter_ref): New declaration.
        (tree_coverage_counter_ref): New declaration.
        * opts.c (OPT_ftree_based_profiling): New.
        * opts.c (OPT_ftree_based_profiling): New.
        * profile.c: Include cfghooks.h, tree-flow.h.
        * profile.c: Include cfghooks.h, tree-flow.h.
        (profile_hooks): New.
        (profile_hooks): New.
        (profile_dump_file): New.
        (profile_dump_file): New.
        (instrument_edges): Use hooks instead of RTL-specific code.
        (instrument_edges): Use hooks instead of RTL-specific code.
        (instrument_values): Ditto.
        (instrument_values): Ditto.
        (get_exec_counts): Ditto.
        (get_exec_counts): Ditto.
        (compute_branch_probabilities): Ditto.
        (compute_branch_probabilities): Ditto.
        (compute_value_histograms): Ditto.
        (compute_value_histograms): Ditto.
        (branch_prob): Ditto.
        (branch_prob): Ditto.
        (find_spanning_tree): Ditto.
        (find_spanning_tree): Ditto.
        (end_branch_prob): Ditto.
        (end_branch_prob): Ditto.
        (gen_edge_profiler): Move to rtl-profile.c (rtl_gen_edge_profiler).
        (gen_edge_profiler): Move to rtl-profile.c (rtl_gen_edge_profiler).
        (gen_interval_profiler): Ditto (rtl_gen_interval_profiler).
        (gen_interval_profiler): Ditto (rtl_gen_interval_profiler).
        (gen_pow2_profiler): Ditto (rtl_gen_pow2_profiler).
        (gen_pow2_profiler): Ditto (rtl_gen_pow2_profiler).
        (gen_one_value_profiler): Ditto (rtl_gen_one_value_profiler).
        (gen_one_value_profiler): Ditto (rtl_gen_one_value_profiler).
        (tree_register_profile_hooks): New.
        (tree_register_profile_hooks): New.
        (rtl_register_profile_hooks): New.
        (rtl_register_profile_hooks): New.
        * rtl-profile.c: New file.
        * rtl-profile.c: New file.
        * rtl.h (init_branch_prob): Move declaration to value-prof.h.
        * rtl.h (init_branch_prob): Move declaration to value-prof.h.
        (end_branch_prob): Ditto.
        (end_branch_prob): Ditto.
        (branch_prob): Ditto.
        (branch_prob): Ditto.
        * toplev.c (flag_tree_based_profiling): New.
        * toplev.c (flag_tree_based_profiling): New.
        (f_options): Add -ftree-based-profiling.
        (f_options): Add -ftree-based-profiling.
        (compile_file): Register rtl-based CFG and profiling hooks.
        (compile_file): Register rtl-based CFG and profiling hooks.
        (rest_of_compilation): Do rtl-based profiling only when
        (rest_of_compilation): Do rtl-based profiling only when
        !flag_tree_based_profiling.  Register rtl-based profiling hooks.
        !flag_tree_based_profiling.  Register rtl-based profiling hooks.
        (process_options): Sorry for -ftree-based-profiling plus
        (process_options): Sorry for -ftree-based-profiling plus
        -ftest-coverage or -fprofile-values.
        -ftest-coverage or -fprofile-values.
        * toplev.h (flag_tree_based_profiling): New.
        * toplev.h (flag_tree_based_profiling): New.
        * tree-cfg.c (tree_block_ends_with_call_p): New.
        * tree-cfg.c (tree_block_ends_with_call_p): New.
        (tree_block_ends_with_condjump_p): New.
        (tree_block_ends_with_condjump_p): New.
        (need_fake_edge_p): New.
        (need_fake_edge_p): New.
        (tree_flow_call_edges_add): New (largely from flow_call_edges_add
        (tree_flow_call_edges_add): New (largely from flow_call_edges_add
        in cfganal.c).
        in cfganal.c).
        (tree_cfg_hooks): Add tree_block_ends_with_call_p,
        (tree_cfg_hooks): Add tree_block_ends_with_call_p,
        tree_block_ends_with_condjump_p, tree_flow_call_edges_add.
        tree_block_ends_with_condjump_p, tree_flow_call_edges_add.
        * tree-optimize.c (init_tree_optimization_passes):
        * tree-optimize.c (init_tree_optimization_passes):
        Add pass_tree_profile.
        Add pass_tree_profile.
        * tree-pass.h: Ditto.
        * tree-pass.h: Ditto.
        * tree-profile.c: New file.
        * tree-profile.c: New file.
        * value-prof.c (value_prof_hooks): New.
        * value-prof.c (value_prof_hooks): New.
        (find_values_to_profile): Rename to rtl_find_values_to_profile.
        (find_values_to_profile): Rename to rtl_find_values_to_profile.
        Move rtl-specific bits in from branch_prob.
        Move rtl-specific bits in from branch_prob.
        (value_profile_transformations): Rename to
        (value_profile_transformations): Rename to
        rtl_value_profile_transformations.
        rtl_value_profile_transformations.
        (struct value_prof_hooks): New.
        (struct value_prof_hooks): New.
        (rtl_value_prof_hooks): New.
        (rtl_value_prof_hooks): New.
        (rtl_register_value_prof_hooks): New.
        (rtl_register_value_prof_hooks): New.
        (tree_find_values_to_profile): New stub.
        (tree_find_values_to_profile): New stub.
        (tree_value_profile_transformations): New stub.
        (tree_value_profile_transformations): New stub.
        (tree_value_prof_hooks): New stub.
        (tree_value_prof_hooks): New stub.
        (tree_register_value_prof_hooks): New stub.
        (tree_register_value_prof_hooks): New stub.
        (find_values_to_profile): New.
        (find_values_to_profile): New.
        (value_profile_transformations): New.
        (value_profile_transformations): New.
        * value-prof.h: Add multiple inclusion guard.
        * value-prof.h: Add multiple inclusion guard.
        (struct histogram_value): Change rtx fields to void *.
        (struct histogram_value): Change rtx fields to void *.
        (rtl_register_value_prof_hooks): New declaration.
        (rtl_register_value_prof_hooks): New declaration.
        (tree_register_value_prof_hooks): New declaration.
        (tree_register_value_prof_hooks): New declaration.
        (find_values_to_profile): New declaration.
        (find_values_to_profile): New declaration.
        (free_profiled_values): New declaration.
        (free_profiled_values): New declaration.
        (value_profile_transformations): New declaration.
        (value_profile_transformations): New declaration.
        (struct profile_hooks): New declaration.
        (struct profile_hooks): New declaration.
        (init_branch_prob): Declaration moved from rtl.h.
        (init_branch_prob): Declaration moved from rtl.h.
        (branch_prob): Declaration moved from rtl.h.
        (branch_prob): Declaration moved from rtl.h.
        (end_branch_prob): Declaration mooved from rtl.h.
        (end_branch_prob): Declaration mooved from rtl.h.
        (tree_register_profile_hooks): New declaration.
        (tree_register_profile_hooks): New declaration.
        (rtl_register_profile_hooks): New declaration.
        (rtl_register_profile_hooks): New declaration.
        (tree_profile_hooks): New declaration.
        (tree_profile_hooks): New declaration.
        (rtl_profile_hooks): New declaration.
        (rtl_profile_hooks): New declaration.
        * doc/invoke.texi: Document -ftree-based-profiling.
        * doc/invoke.texi: Document -ftree-based-profiling.
2004-02-12  Jeff Law  
2004-02-12  Jeff Law  
        * domwalk.c (walk_dominator_tree): Move statement walking from
        * domwalk.c (walk_dominator_tree): Move statement walking from
        clients into here.  Walk statements in forward or backward order
        clients into here.  Walk statements in forward or backward order
        as requested by the client.  Walk either the dominator tree or
        as requested by the client.  Walk either the dominator tree or
        the post-dominator tree as requested by the client.
        the post-dominator tree as requested by the client.
        * domwalk.h (dom_walk_data): Add two fields to control direction of
        * domwalk.h (dom_walk_data): Add two fields to control direction of
        statement walk and dominator vs post-dominator tree walk.  Add
        statement walk and dominator vs post-dominator tree walk.  Add
        BSI argument to the per-statement callbacks.
        BSI argument to the per-statement callbacks.
        * tree-ssa-dom.c (optimize_stmt): Update prototype so that it can
        * tree-ssa-dom.c (optimize_stmt): Update prototype so that it can
        be directly used as a callback for the dominator tree walker.
        be directly used as a callback for the dominator tree walker.
        Update stmts_to_rescan here.
        Update stmts_to_rescan here.
        (tree_ssa_dominator_optimize): Initialize new fields in the dominator
        (tree_ssa_dominator_optimize): Initialize new fields in the dominator
        walker structure.  Use optimize_stmt instead of dom_opt_walk_stmts
        walker structure.  Use optimize_stmt instead of dom_opt_walk_stmts
        for statement callback.
        for statement callback.
        (dom_opt_walk_stmts): Kill.  No longer used.
        (dom_opt_walk_stmts): Kill.  No longer used.
        * tree-ssa.c (mark_def_sites): Update prototype so that it can be
        * tree-ssa.c (mark_def_sites): Update prototype so that it can be
        called as the per-statement callback.  No longer walk statements here.
        called as the per-statement callback.  No longer walk statements here.
        (mark_def_sites_initialize_block): New.
        (mark_def_sites_initialize_block): New.
        (rewrite_stmt): Update prototype so that it can be called as the
        (rewrite_stmt): Update prototype so that it can be called as the
        per-statement callback.
        per-statement callback.
        (rewrite_walk_stmts): Kill.  No longer used.
        (rewrite_walk_stmts): Kill.  No longer used.
        (rewrite_into_ssa): Initialize new fields in the dominator walker
        (rewrite_into_ssa): Initialize new fields in the dominator walker
        structure.  Use rewrite_stmt instead of rewrite_walk_stmts.  Add
        structure.  Use rewrite_stmt instead of rewrite_walk_stmts.  Add
        mark_def_sites_initialize_block callback.
        mark_def_sites_initialize_block callback.
2004-02-12  Steven Bosscher  
2004-02-12  Steven Bosscher  
        * doc/cfg.texi: New file.
        * doc/cfg.texi: New file.
        * doc/ggcint.texi: Include it.  Add a new chapter.
        * doc/ggcint.texi: Include it.  Add a new chapter.
2004-02-11  Jeff Law  
2004-02-11  Jeff Law  
        * Makefile.in (OBJS-common): Add tree-ssa-forwprop.o
        * Makefile.in (OBJS-common): Add tree-ssa-forwprop.o
        (tree-ssa-forwprop.o): Add dependencies.
        (tree-ssa-forwprop.o): Add dependencies.
        * timevar.def (TV_TREE_FORWPROP): New timevar.
        * timevar.def (TV_TREE_FORWPROP): New timevar.
        * tree-optimize.c (init_tree_optimization_passes): Link in
        * tree-optimize.c (init_tree_optimization_passes): Link in
        the forward propagation pass.
        the forward propagation pass.
        * tree-pass.h (pass_forwprop): Declare.
        * tree-pass.h (pass_forwprop): Declare.
        * tree-ssa-forwprop.c: New file with forward propagation pass.
        * tree-ssa-forwprop.c: New file with forward propagation pass.
        * doc/invoke.texi: Document dump for forward propagation pass.
        * doc/invoke.texi: Document dump for forward propagation pass.
2004-02-11  Andrew MacLeod  
2004-02-11  Andrew MacLeod  
        * tree-ssa.c (rewrite_out_of_ssa): Don't use coalesce list until new
        * tree-ssa.c (rewrite_out_of_ssa): Don't use coalesce list until new
        bug resolved.
        bug resolved.
2004-02-11  Andrew MacLeod  
2004-02-11  Andrew MacLeod  
        * tree-ssa-live.c (compare_pairs): New.  Coalesce list cost function.
        * tree-ssa-live.c (compare_pairs): New.  Coalesce list cost function.
        (sort_coalesce_list): Use qsort() to sort list by cost.
        (sort_coalesce_list): Use qsort() to sort list by cost.
        (coalesce_tpa_members): Use correct partition representatives.  Add more
        (coalesce_tpa_members): Use correct partition representatives.  Add more
        debug information.  Allow coalesce by list, root_var, or both.
        debug information.  Allow coalesce by list, root_var, or both.
        (tpa_dump): Show partition index.
        (tpa_dump): Show partition index.
        * tree-ssa-live.h (SSANORM_COALESCE_PARTITIONS): New flag.
        * tree-ssa-live.h (SSANORM_COALESCE_PARTITIONS): New flag.
        (SSANORM_USE_COALESCE_LIST): New flag.
        (SSANORM_USE_COALESCE_LIST): New flag.
        * tree-ssa.c (create_temp): Don't mark as used when created.
        * tree-ssa.c (create_temp): Don't mark as used when created.
        (coalesce_ssa_name): Create coalesce list if requested.  Add more
        (coalesce_ssa_name): Create coalesce list if requested.  Add more
        debug output.
        debug output.
        (assign_vars): Add additional debug info.
        (assign_vars): Add additional debug info.
        (remove_ssa_form): Perform TER after assign_vars().
        (remove_ssa_form): Perform TER after assign_vars().
        (rewrite_vars_out_of_ssa): Pass coalesce partitions flag to
        (rewrite_vars_out_of_ssa): Pass coalesce partitions flag to
        remove_ssa_form.
        remove_ssa_form.
        (rewrite_out_of_ssa): Add coalesce list flag to remove_ssa_form call.
        (rewrite_out_of_ssa): Add coalesce list flag to remove_ssa_form call.
2004-02-10  Jeff Law  
2004-02-10  Jeff Law  
        * Makefile.in (OBJS-common): Add tree-ssa-phiopt.o
        * Makefile.in (OBJS-common): Add tree-ssa-phiopt.o
        (tree-ssa-phiopt.o): Add dependencies.
        (tree-ssa-phiopt.o): Add dependencies.
        * timevar.def (TV_TREE_PHIOPT): New timevar.
        * timevar.def (TV_TREE_PHIOPT): New timevar.
        * tree-cfg.c (extract_true_false_edges_from_block): Moved here from
        * tree-cfg.c (extract_true_false_edges_from_block): Moved here from
        tree-ssa-dom.c.
        tree-ssa-dom.c.
        (tree_verify_flow_info): Use extract_true_false_edges_from_block.
        (tree_verify_flow_info): Use extract_true_false_edges_from_block.
        * tree-flow.h (extract_true_false_edges_from_block): Declare.
        * tree-flow.h (extract_true_false_edges_from_block): Declare.
        * tree-ssa-dom.c (extract_true_false_edges_from_block): Moved into
        * tree-ssa-dom.c (extract_true_false_edges_from_block): Moved into
        tree-cfg.c.
        tree-cfg.c.
        (get_eq_expr_value): Improve type check.
        (get_eq_expr_value): Improve type check.
        * tree-optimize.c (init_tree_optimization_passes): Link in
        * tree-optimize.c (init_tree_optimization_passes): Link in
        phiopt pass.
        phiopt pass.
        * tree-pass.h (pass_phiopt): Declare.
        * tree-pass.h (pass_phiopt): Declare.
        * tree-ssa-phiopt.c: New file with PHI node optimization pass.
        * tree-ssa-phiopt.c: New file with PHI node optimization pass.
        * doc/invoke.texi: Document dump for PHI node optimization.
        * doc/invoke.texi: Document dump for PHI node optimization.
2004-02-10  Richard Henderson  
2004-02-10  Richard Henderson  
        * tree-sra.c (lookup_scalar): Handle unnamed fields.
        * tree-sra.c (lookup_scalar): Handle unnamed fields.
2004-02-10  Diego Novillo  
2004-02-10  Diego Novillo  
        * Makefile.in (OBJS-common): Add tree-ssa-alias.o.
        * Makefile.in (OBJS-common): Add tree-ssa-alias.o.
        (tree-ssa-alias.o): New rule.
        (tree-ssa-alias.o): New rule.
        (tree-ssa-operands.o): Add dependency on $(TIMEVAR_H) and tree-pass.h
        (tree-ssa-operands.o): Add dependency on $(TIMEVAR_H) and tree-pass.h
        (gt-tree-dfa.h): Remove.
        (gt-tree-dfa.h): Remove.
        * timevar.def (TV_TREE_OPS): Rename from unused entry TV_TREE_DFA.
        * timevar.def (TV_TREE_OPS): Rename from unused entry TV_TREE_DFA.
        * tree-ssa-alias.c: New file.
        * tree-ssa-alias.c: New file.
        * tree-dfa.c (struct alias_stats_d, alias_stats, dump_alias_stats,
        * tree-dfa.c (struct alias_stats_d, alias_stats, dump_alias_stats,
        may_alias_p, add_may_alias, global_var, aliases_computed_p,
        may_alias_p, add_may_alias, global_var, aliases_computed_p,
        compute_may_aliases): Move to tree-ssa-alias.c.
        compute_may_aliases): Move to tree-ssa-alias.c.
        (struct walk_state): Remove fields 'is_asm_expr' and 'num_calls'.
        (struct walk_state): Remove fields 'is_asm_expr' and 'num_calls'.
        Update all users.
        Update all users.
        (compute_alias_sets, create_memory_tags, may_access_global_mem_p,
        (compute_alias_sets, create_memory_tags, may_access_global_mem_p,
        get_memory_tag_for, promote_call_clobbered_vars,
        get_memory_tag_for, promote_call_clobbered_vars,
        find_addressable_vars): Remove.
        find_addressable_vars): Remove.
        (call_clobbered_vars): Move to tree-ssa-alias.c and convert to
        (call_clobbered_vars): Move to tree-ssa-alias.c and convert to
        bitmap.
        bitmap.
        (find_referenced_vars): Move logic to create .GLOBAL_VAR to
        (find_referenced_vars): Move logic to create .GLOBAL_VAR to
        tree-ssa-alias.c.
        tree-ssa-alias.c.
        (create_ssa_name_ann): New.
        (create_ssa_name_ann): New.
        (dump_variable): Rearrange.
        (dump_variable): Rearrange.
        (dump_dfa_stats): Do not show the number of call clobbered
        (dump_dfa_stats): Do not show the number of call clobbered
        variables.
        variables.
        (find_vars_r): Do not try to determine if an assignment my access
        (find_vars_r): Do not try to determine if an assignment my access
        global memory.
        global memory.
        (add_referenced_var): Remove hacks to establish global memory
        (add_referenced_var): Remove hacks to establish global memory
        dependencies.
        dependencies.
        If the variable needs to live in memory mark it call-clobbered.
        If the variable needs to live in memory mark it call-clobbered.
        * tree-flow-inline.h (ssa_name_ann): New.
        * tree-flow-inline.h (ssa_name_ann): New.
        (get_ssa_name_ann): New.
        (get_ssa_name_ann): New.
        (set_may_alias_global_mem): Remove.
        (set_may_alias_global_mem): Remove.
        (may_alias_global_mem_p): Remove.
        (may_alias_global_mem_p): Remove.
        (set_may_point_to_global_mem): Remove.
        (set_may_point_to_global_mem): Remove.
        (may_point_to_global_mem_p): Remove.
        (may_point_to_global_mem_p): Remove.
        (is_call_clobbered): New
        (is_call_clobbered): New
        (mark_call_clobbered): New
        (mark_call_clobbered): New
        (mark_non_addressable): New
        (mark_non_addressable): New
        * tree-flow.h (enum tree_ann_type): Add SSA_NAME_ANN.
        * tree-flow.h (enum tree_ann_type): Add SSA_NAME_ANN.
        (enum mem_tag_kind): Declare.
        (enum mem_tag_kind): Declare.
        (struct var_ann_d): Remove fields 'is_call_clobbered',
        (struct var_ann_d): Remove fields 'is_call_clobbered',
        'may_alias_global_mem' and 'may_point_to_global_mem'.
        'may_alias_global_mem' and 'may_point_to_global_mem'.
        Replace bitfield 'mem_tag' with enum bitfield 'mem_tag_kind'.
        Replace bitfield 'mem_tag' with enum bitfield 'mem_tag_kind'.
        Rename field 'mem_tag' to 'type_mem_tag'.
        Rename field 'mem_tag' to 'type_mem_tag'.
        (struct stmt_ann_d): Change type of field 'addresses_taken' to a
        (struct stmt_ann_d): Change type of field 'addresses_taken' to a
        bitmap.  Update all users.
        bitmap.  Update all users.
        (struct ssa_name_ann_d): Declare.
        (struct ssa_name_ann_d): Declare.
        (union tree_ann_d): Add field 'ssa_name'.
        (union tree_ann_d): Add field 'ssa_name'.
        (ssa_name_ann_t): New type.
        (ssa_name_ann_t): New type.
        (struct bb_ann_d): Add field 'has_escape_site'.
        (struct bb_ann_d): Add field 'has_escape_site'.
        (num_call_clobbered_vars): Remove.
        (num_call_clobbered_vars): Remove.
        (call_clobbered_var): Remove.
        (call_clobbered_var): Remove.
        (call_clobbered_vars): Change to bitmap.
        (call_clobbered_vars): Change to bitmap.
        (dump_points_to_info): Declare.
        (dump_points_to_info): Declare.
        (debug_points_to_info): Declare.
        (debug_points_to_info): Declare.
        (walk_use_def_chains_fn): New type.
        (walk_use_def_chains_fn): New type.
        (walk_use_def_chains): Declare.
        (walk_use_def_chains): Declare.
        (is_call_clobbered): Declare.
        (is_call_clobbered): Declare.
        (mark_call_clobbered): Declare.
        (mark_call_clobbered): Declare.
        * tree-simple.c (needs_to_live_in_memory): Move to tree.c.
        * tree-simple.c (needs_to_live_in_memory): Move to tree.c.
        (is_gimple_non_addressable): Update comment.
        (is_gimple_non_addressable): Update comment.
        (is_gimple_call_clobbered): Remove.
        (is_gimple_call_clobbered): Remove.
        (get_call_expr_in): New.
        (get_call_expr_in): New.
        (get_base_var): Rename from get_base_symbol.  Update all callers.
        (get_base_var): Rename from get_base_symbol.  Update all callers.
        Don't strip SSA_NAME wrappers.
        Don't strip SSA_NAME wrappers.
        (get_base_decl): New.
        (get_base_decl): New.
        (get_base_address): New.
        (get_base_address): New.
        * tree-simple.h (is_gimple_call_clobbered): Remove.
        * tree-simple.h (is_gimple_call_clobbered): Remove.
        (needs_to_live_in_memory): Remove.
        (needs_to_live_in_memory): Remove.
        (get_base_decl): Declare.
        (get_base_decl): Declare.
        (get_base_var): Declare.
        (get_base_var): Declare.
        (get_base_address): Declare.
        (get_base_address): Declare.
        * tree-ssa-dce.c (need_to_preserve_store): Reduce to calling
        * tree-ssa-dce.c (need_to_preserve_store): Reduce to calling
        needs_to_live_in_memory.
        needs_to_live_in_memory.
        * tree-ssa-operands.c: Include tree-pass.h and timevar.h
        * tree-ssa-operands.c: Include tree-pass.h and timevar.h
        (get_stmt_operands): Push/pop TV_TREE_OPS time var.
        (get_stmt_operands): Push/pop TV_TREE_OPS time var.
        Call mark_call_clobbered for asms that store to memory.
        Call mark_call_clobbered for asms that store to memory.
        (get_expr_operands): When adding operands for INDIRECT_REF
        (get_expr_operands): When adding operands for INDIRECT_REF
        expressions, use flow-sensitive aliasing, if available.
        expressions, use flow-sensitive aliasing, if available.
        Assume that malloc-like function calls won't clobber.
        Assume that malloc-like function calls won't clobber.
        (add_call_clobber_ops):
        (add_call_clobber_ops):
        (add_call_read_ops):
        (add_call_read_ops):
        * tree-ssa.c (rewrite_into_ssa): If any variable in vars_to_rename
        * tree-ssa.c (rewrite_into_ssa): If any variable in vars_to_rename
        is a pointer, invalidate all name memory tags.
        is a pointer, invalidate all name memory tags.
        (create_temp): Call is_call_clobbered and mark_call_clobbered.
        (create_temp): Call is_call_clobbered and mark_call_clobbered.
        (walk_use_def_chains_1): New.
        (walk_use_def_chains_1): New.
        (walk_use_def_chains): New.
        (walk_use_def_chains): New.
        * tree.c (needs_to_live_in_memory): New.
        * tree.c (needs_to_live_in_memory): New.
        * tree.h (DECL_NEEDS_TO_LIVE_IN_MEMORY_INTERNAL): Define.
        * tree.h (DECL_NEEDS_TO_LIVE_IN_MEMORY_INTERNAL): Define.
        (struct tree_decl): Add bitfield 'needs_to_live_in_memory'.
        (struct tree_decl): Add bitfield 'needs_to_live_in_memory'.
        Update unused bits comment.
        Update unused bits comment.
        (needs_to_live_in_memory): Declare.
        (needs_to_live_in_memory): Declare.
        * tree-simple.h (get_call_expr_in): Declare.
        * tree-simple.h (get_call_expr_in): Declare.
        * tree-sra.c (scalarize_stmt): Call get_call_expr_in when handling
        * tree-sra.c (scalarize_stmt): Call get_call_expr_in when handling
        function calls.
        function calls.
        * tree-ssa-ccp.c (likely_value): Likewise.
        * tree-ssa-ccp.c (likely_value): Likewise.
        * params.def (PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR): Remove.
        * params.def (PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR): Remove.
        (PARAM_MAX_CALLS_GLOBAL_VAR): Remove.
        (PARAM_MAX_CALLS_GLOBAL_VAR): Remove.
        (PARAM_GLOBAL_VAR_THRESHOLD): Define.
        (PARAM_GLOBAL_VAR_THRESHOLD): Define.
        (PARAM_MAX_ALIAS_SET_SIZE): Define.
        (PARAM_MAX_ALIAS_SET_SIZE): Define.
        Update all users.
        Update all users.
        * params.h (MAX_CALLS_FOR_GLOBAL_VAR): Remove.
        * params.h (MAX_CALLS_FOR_GLOBAL_VAR): Remove.
        (MAX_CLOBBERED_VARS_FOR_GLOBAL_VAR): Remove.
        (MAX_CLOBBERED_VARS_FOR_GLOBAL_VAR): Remove.
        (GLOBAL_VAR_THRESHOLD): Define.
        (GLOBAL_VAR_THRESHOLD): Define.
        (MAX_ALIAS_SET_SIZE): Define.
        (MAX_ALIAS_SET_SIZE): Define.
2004-02-09  Richard Henderson  
2004-02-09  Richard Henderson  
        * langhooks.h (lang_hooks_for_functions): Add missing_noreturn_ok_p.
        * langhooks.h (lang_hooks_for_functions): Add missing_noreturn_ok_p.
        * langhooks-def.h, c-lang.c, objc/objc-lang.c
        * langhooks-def.h, c-lang.c, objc/objc-lang.c
        (LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P): New.
        (LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P): New.
        * c-objc-common.c (c_missing_noreturn_ok_p): Return bool.
        * c-objc-common.c (c_missing_noreturn_ok_p): Return bool.
        (c_objc_common_init): Don't set lang_missing_noreturn_ok_p.
        (c_objc_common_init): Don't set lang_missing_noreturn_ok_p.
        * c-tree.h (c_missing_noreturn_ok_p): Update decl.
        * c-tree.h (c_missing_noreturn_ok_p): Update decl.
        * flow.c (lang_missing_noreturn_ok_p): Remove.
        * flow.c (lang_missing_noreturn_ok_p): Remove.
        * flow.c (check_function_return_warnings): Move to tree-cfg.c.
        * flow.c (check_function_return_warnings): Move to tree-cfg.c.
        * toplev.c (rest_of_compilation): Don't call it.
        * toplev.c (rest_of_compilation): Don't call it.
        * tree-cfg.c (execute_warn_function_return): Move from flow.c,
        * tree-cfg.c (execute_warn_function_return): Move from flow.c,
        rename, update for tree vs rtl.
        rename, update for tree vs rtl.
        (pass_warn_function_return): New.
        (pass_warn_function_return): New.
        * tree-pass.h (pass_warn_function_return): Declare it.
        * tree-pass.h (pass_warn_function_return): Declare it.
        * tree-optimize.c (init_tree_optimization_passes): Run it.
        * tree-optimize.c (init_tree_optimization_passes): Run it.
        * function.h (struct function): Remove x_clobber_return_insn.
        * function.h (struct function): Remove x_clobber_return_insn.
        * function.c (free_after_compilation): Don't set it.
        * function.c (free_after_compilation): Don't set it.
        (expand_function_end): Likewise.
        (expand_function_end): Likewise.
2004-02-09  Richard Henderson  
2004-02-09  Richard Henderson  
        Revert:
        Revert:
        2004-02-06  Richard Henderson  
        2004-02-06  Richard Henderson  
        * tree-ssa-dom.c (record_equivalences_from_phis): Use
        * tree-ssa-dom.c (record_equivalences_from_phis): Use
        record_const_or_copy.
        record_const_or_copy.
        (record_equivalences_from_stmt): Likewise.  Replace
        (record_equivalences_from_stmt): Likewise.  Replace
        block_avail_exprs_p and block_nonzero_vars_p args with bd.
        block_avail_exprs_p and block_nonzero_vars_p args with bd.
2004-02-09  Jeff Law  
2004-02-09  Jeff Law  
        * tree-ssa-dom.c (get_eq_expr_value): Improve handling of boolean
        * tree-ssa-dom.c (get_eq_expr_value): Improve handling of boolean
        conditions.
        conditions.
        * domwalk.c (walk_dominator_tree): Completely lose PARENT argument.
        * domwalk.c (walk_dominator_tree): Completely lose PARENT argument.
        Callers updated.  No longer pass PARENT to callbacks.
        Callers updated.  No longer pass PARENT to callbacks.
        * domwalk.h (struct dom_walk_data): Corresponding changes.
        * domwalk.h (struct dom_walk_data): Corresponding changes.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * domwalk.c (walk_dominator_tree): Change last argument to be the
        * domwalk.c (walk_dominator_tree): Change last argument to be the
        parent block in the dominator tree rather than the last statement
        parent block in the dominator tree rather than the last statement
        in the parent block in the dominator tree.  Similarly in all the
        in the parent block in the dominator tree.  Similarly in all the
        callbacks.
        callbacks.
        * domwalk.h (struct dom_walk_data): Update callback prototypes.
        * domwalk.h (struct dom_walk_data): Update callback prototypes.
        * tree-ssa-dom.c: Corresponding changes.
        * tree-ssa-dom.c: Corresponding changes.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Break out
        * tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Break out
        of tree_ssa_dominator_optimize.  If the out-of-ssa pass creates
        of tree_ssa_dominator_optimize.  If the out-of-ssa pass creates
        new variables, then invalidate some requested jump threads.
        new variables, then invalidate some requested jump threads.
2004-02-08  Richard Henderson  
2004-02-08  Richard Henderson  
        * flow.c (regno_uninitialized): Remove.
        * flow.c (regno_uninitialized): Remove.
        * output.h (regno_uninitialized): Remove.
        * output.h (regno_uninitialized): Remove.
        * function.c (setjmp_vars_warning): Rename from
        * function.c (setjmp_vars_warning): Rename from
        uninitialized_vars_warning, remove uninitialized vars warning.
        uninitialized_vars_warning, remove uninitialized vars warning.
        * toplev.c (rest_of_handle_life): Update to match.
        * toplev.c (rest_of_handle_life): Update to match.
        * tree.h (setjmp_vars_warning): Likewise.
        * tree.h (setjmp_vars_warning): Likewise.
        * tree-sra.c (lookup_scalar): Set DECL_NAME to something descriptive.
        * tree-sra.c (lookup_scalar): Set DECL_NAME to something descriptive.
        * tree-ssa.c (warn_uninit): New.
        * tree-ssa.c (warn_uninit): New.
        (warn_uninitialized_var, warn_uninitialized_phi): New.
        (warn_uninitialized_var, warn_uninitialized_phi): New.
        (execute_early_warn_uninitialized): New.
        (execute_early_warn_uninitialized): New.
        (execute_late_warn_uninitialized): New.
        (execute_late_warn_uninitialized): New.
        (gate_warn_uninitialized): New.
        (gate_warn_uninitialized): New.
        (pass_early_warn_uninitialized): New.
        (pass_early_warn_uninitialized): New.
        (pass_late_warn_uninitialized): New.
        (pass_late_warn_uninitialized): New.
        * tree-pass.h (pass_early_warn_uninitialized): New.
        * tree-pass.h (pass_early_warn_uninitialized): New.
        (pass_late_warn_uninitialized): New.
        (pass_late_warn_uninitialized): New.
        * tree-optimize.c (init_tree_optimization_passes): Add them.
        * tree-optimize.c (init_tree_optimization_passes): Add them.
2004-02-08  Richard Henderson  
2004-02-08  Richard Henderson  
        * cppexp.c (append_digit): Rearrange unsignedp/overflow setting.
        * cppexp.c (append_digit): Rearrange unsignedp/overflow setting.
        (eval_token, num_binary_op, num_part_mul, num_div_op): Likewise.
        (eval_token, num_binary_op, num_part_mul, num_div_op): Likewise.
        * ra-rewrite.c (rewrite_program2): Zero info.
        * ra-rewrite.c (rewrite_program2): Zero info.
        * reload.c (decompose): Zero val.
        * reload.c (decompose): Zero val.
        * tree-ssa-ccp.c (visit_phi_node): Zero phi_val.const_val.
        * tree-ssa-ccp.c (visit_phi_node): Zero phi_val.const_val.
2004-02-07  Jan Hubicka  
2004-02-07  Jan Hubicka  
        * tree-inline.c (save_body): Clone the parm decl correctly.
        * tree-inline.c (save_body): Clone the parm decl correctly.
        * cgraph.c: Add introductionary comment.
        * cgraph.c: Add introductionary comment.
        (cgraph_remove_node): Release DECL_SAVED_INSNS too.
        (cgraph_remove_node): Release DECL_SAVED_INSNS too.
        * cgraphunit.c: Likewise.
        * cgraphunit.c: Likewise.
        (cgraph_finalize_function): Release DECL_SAVED_INSNS of external function.
        (cgraph_finalize_function): Release DECL_SAVED_INSNS of external function.
        (decl_expand_function): Release DECL_SAVED_INSNS/body/tree.
        (decl_expand_function): Release DECL_SAVED_INSNS/body/tree.
        (cgraph_remove_unreachable_nodes): Likewise; guard cgraph verification.
        (cgraph_remove_unreachable_nodes): Likewise; guard cgraph verification.
2004-02-06  Richard Henderson  
2004-02-06  Richard Henderson  
        * common.opt (fdisable-tree-ssa): Remove.
        * common.opt (fdisable-tree-ssa): Remove.
        * flags.h (flag_disable_tree_ssa): Remove.
        * flags.h (flag_disable_tree_ssa): Remove.
        * toplev.c (flag_disable_tree_ssa): Remove.
        * toplev.c (flag_disable_tree_ssa): Remove.
        (f_options): Don't set it.
        (f_options): Don't set it.
        * opts.c (common_handle_option): Likewise.
        * opts.c (common_handle_option): Likewise.
        * doc/invoke.texi (fdisable-tree-ssa): Remove.
        * doc/invoke.texi (fdisable-tree-ssa): Remove.
2004-02-06  Richard Henderson  
2004-02-06  Richard Henderson  
        * tree-ssa-dom.c (record_equivalences_from_phis): Use
        * tree-ssa-dom.c (record_equivalences_from_phis): Use
        record_const_or_copy.
        record_const_or_copy.
        (record_equivalences_from_stmt): Likewise.  Replace
        (record_equivalences_from_stmt): Likewise.  Replace
        block_avail_exprs_p and block_nonzero_vars_p args with bd.
        block_avail_exprs_p and block_nonzero_vars_p args with bd.
2004-02-06  Andrew Pinski  
2004-02-06  Andrew Pinski  
        PR middle-end/13127
        PR middle-end/13127
        * tree-inline.c (declare_return_variable): Set the no warning bit
        * tree-inline.c (declare_return_variable): Set the no warning bit
        on the variable created for the return value.
        on the variable created for the return value.
2004-02-06  Richard Henderson  
2004-02-06  Richard Henderson  
        * tree-pretty-print.c (dump_generic_node): Render NON_LVALUE_EXPR.
        * tree-pretty-print.c (dump_generic_node): Render NON_LVALUE_EXPR.
        * tree-ssa-dom.c (local_fold): New.
        * tree-ssa-dom.c (local_fold): New.
        (thread_across_edge, simplify_rhs_and_lookup_avail_expr,
        (thread_across_edge, simplify_rhs_and_lookup_avail_expr,
        find_equivalent_equality_comparison): Use it.
        find_equivalent_equality_comparison): Use it.
2004-02-06  Andrew Pinski  
2004-02-06  Andrew Pinski  
        PR c/13863
        PR c/13863
        * c-common.c (c_decl_uninit_1): Remove.
        * c-common.c (c_decl_uninit_1): Remove.
        (c_decl_uninit): Remove.
        (c_decl_uninit): Remove.
        * c-common.h (c_decl_uninit): Remove prototype.
        * c-common.h (c_decl_uninit): Remove prototype.
        * c-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
        * c-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
        * objc/objc-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
        * objc/objc-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
        * c-simplify.c (gimplify_decl_stmt): Set TREE_NO_WARNING
        * c-simplify.c (gimplify_decl_stmt): Set TREE_NO_WARNING
        on the decl where the initial is itself.
        on the decl where the initial is itself.
        * function.c (uninitialized_vars_warning): Remove old comment
        * function.c (uninitialized_vars_warning): Remove old comment
        and check for DECL_INITIAL, replace with a check of TREE_NO_WARNING
        and check for DECL_INITIAL, replace with a check of TREE_NO_WARNING
        and do not call the langhook.
        and do not call the langhook.
        * langhooks-def.h (LANG_HOOKS_DECL_UNINIT): Remove.
        * langhooks-def.h (LANG_HOOKS_DECL_UNINIT): Remove.
        (LANG_HOOKS_INITIALIZER): Remove usage of LANG_HOOKS_DECL_UNINIT.
        (LANG_HOOKS_INITIALIZER): Remove usage of LANG_HOOKS_DECL_UNINIT.
        * langhooks.c (lhd_decl_uninit): Remove.
        * langhooks.c (lhd_decl_uninit): Remove.
        * langhooks.h (lhd_decl_uninit): Remove prototype.
        * langhooks.h (lhd_decl_uninit): Remove prototype.
2004-02-05  Richard Henderson  
2004-02-05  Richard Henderson  
        * tree-ssa-dom.c (record_const_or_copy_1): New.
        * tree-ssa-dom.c (record_const_or_copy_1): New.
        (record_const_or_copy): New.
        (record_const_or_copy): New.
        (thread_across_edge): Use it.
        (thread_across_edge): Use it.
        (dom_opt_finalize_block): Likewise.  Tidy.
        (dom_opt_finalize_block): Likewise.  Tidy.
        (record_equality): Split out from ...
        (record_equality): Split out from ...
        (record_equivalences_from_incoming_edge): ... here.
        (record_equivalences_from_incoming_edge): ... here.
2004-02-05  Richard Henderson  
2004-02-05  Richard Henderson  
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Allow
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Allow
        mixing PLUS and MINUS when folding operations.
        mixing PLUS and MINUS when folding operations.
2004-02-05  Andrew Macleod  
2004-02-05  Andrew Macleod  
        * tree-pretty-print.c (dump_bb_header):  Allow TDF_SLIM printing.
        * tree-pretty-print.c (dump_bb_header):  Allow TDF_SLIM printing.
        (dump_bb_end):  Allow TDF_SLIM printing.
        (dump_bb_end):  Allow TDF_SLIM printing.
        (dump_generic_bb_buff):  Add flags parameter to dump_bb_end.
        (dump_generic_bb_buff):  Add flags parameter to dump_bb_end.
2004-02-05  Jan Hubicka  
2004-02-05  Jan Hubicka  
        * alias.c (find_base_term, get_addr):  Do not dereference NULL
        * alias.c (find_base_term, get_addr):  Do not dereference NULL
        pointer when all VALUE's locations has been invalidated.
        pointer when all VALUE's locations has been invalidated.
        (rtx_equal_for_memref_p): Simplify checking of VALUEs.
        (rtx_equal_for_memref_p): Simplify checking of VALUEs.
2004-02-04  Daniel Berlin  
2004-02-04  Daniel Berlin  
        * tree-alias-ander.c (andersen_init): Reorder/Redo code so that we
        * tree-alias-ander.c (andersen_init): Reorder/Redo code so that we
        actually free the memory in intraprocedural mode.
        actually free the memory in intraprocedural mode.
        (andersen_cleanup): Ditto.
        (andersen_cleanup): Ditto.
2004-02-04  Richard Henderson  
2004-02-04  Richard Henderson  
        * tree-ssa-ccp.c (get_value, visit_phi_node,
        * tree-ssa-ccp.c (get_value, visit_phi_node,
        visit_assignment, dump_lattice_value): Tidy.
        visit_assignment, dump_lattice_value): Tidy.
        (evaluate_stmt): Don't do debug dump here.
        (evaluate_stmt): Don't do debug dump here.
        (def_to_undefined): Merge into set_lattice_value.
        (def_to_undefined): Merge into set_lattice_value.
        (def_to_varying): Likewise, but retain as a wrapper.
        (def_to_varying): Likewise, but retain as a wrapper.
        (set_lattice_value): Tidy.  Emit correct debug info.
        (set_lattice_value): Tidy.  Emit correct debug info.
        (replace_uses_in): Remove strlen hacks.
        (replace_uses_in): Remove strlen hacks.
        (execute_fold_all_builtins): Fix DECL_BUILT_IN comparison.
        (execute_fold_all_builtins): Fix DECL_BUILT_IN comparison.
        Force folding of BUILT_IN_CONSTANT_P.
        Force folding of BUILT_IN_CONSTANT_P.
2004-02-04  Richard Henderson  
2004-02-04  Richard Henderson  
        * builtins.c (fold_builtin_expect): New.
        * builtins.c (fold_builtin_expect): New.
        (fold_builtin_1): Call it.
        (fold_builtin_1): Call it.
2004-02-04  Jeff Law  
2004-02-04  Jeff Law  
        * jump.c (duplicate_loop_exit_test): Allow copying of the loop
        * jump.c (duplicate_loop_exit_test): Allow copying of the loop
        exit test even if we do not find the LOOP_END note.
        exit test even if we do not find the LOOP_END note.
        * domwalk.c: Update comments.
        * domwalk.c: Update comments.
2004-02-04  Brian Booth  
2004-02-04  Brian Booth  
        PR opt/13755
        PR opt/13755
        * tree-dfa.c (compute_alias_sets): set rename flag for variables
        * tree-dfa.c (compute_alias_sets): set rename flag for variables
        aliased by GLOBAL_VAR.
        aliased by GLOBAL_VAR.
2004-02-04  Richard Henderson  
2004-02-04  Richard Henderson  
        * tree-ssa-dom.c (simplify_switch_and_lookup_avail_expr): New.
        * tree-ssa-dom.c (simplify_switch_and_lookup_avail_expr): New.
        (eliminate_redundant_computations): Call it.
        (eliminate_redundant_computations): Call it.
2004-02-03  Richard Henderson  
2004-02-03  Richard Henderson  
        PR opt/13869
        PR opt/13869
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Correct handling of
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Correct handling of
        boolean variables in COND_EXPR_COND.
        boolean variables in COND_EXPR_COND.
2004-02-03  Richard Henderson  
2004-02-03  Richard Henderson  
        PR middle-end/13325
        PR middle-end/13325
        * builtins.c (fold_builtin_1): Rename from fold_builtin.
        * builtins.c (fold_builtin_1): Rename from fold_builtin.
        (fold_builtin): New.
        (fold_builtin): New.
        * c-simplify.c (gimplify_expr_stmt): Check TREE_NO_WARNING.
        * c-simplify.c (gimplify_expr_stmt): Check TREE_NO_WARNING.
        * stmt.c (expand_expr_stmt_value): Likewise.
        * stmt.c (expand_expr_stmt_value): Likewise.
        * tree.h (struct tree_common): Add nowarning_flag.
        * tree.h (struct tree_common): Add nowarning_flag.
        (TREE_NO_WARNING): New.
        (TREE_NO_WARNING): New.
        (TREE_NO_UNUSED_WARNING): Remove.
        (TREE_NO_UNUSED_WARNING): Remove.
        * c-typeck.c (build_unary_op): Use TREE_NO_WARNING instead.
        * c-typeck.c (build_unary_op): Use TREE_NO_WARNING instead.
        * stmt.c (warn_if_unused_value): Likewise.
        * stmt.c (warn_if_unused_value): Likewise.
2004-02-03  Steven Bosscher  
2004-02-03  Steven Bosscher  
        * tree-ssa-dce.c: Partial rewrite.  The old DCE is now called
        * tree-ssa-dce.c: Partial rewrite.  The old DCE is now called
        `conservative'.  The more aggressive algorithm uses control
        `conservative'.  The more aggressive algorithm uses control
        dependence and is called `aggressive' or cd-dce.
        dependence and is called `aggressive' or cd-dce.
        * timevar.def (TV_TREE_DCE): Rename.
        * timevar.def (TV_TREE_DCE): Rename.
        (TV_TREE_CD_DCE, TV_CONTROL_DEPENDENCES): New timevars.
        (TV_TREE_CD_DCE, TV_CONTROL_DEPENDENCES): New timevars.
        * tree-pass.h: Declare extern pass_cd_dce.
        * tree-pass.h: Declare extern pass_cd_dce.
        * tree-optimize.c (init_tree_optimization_passes): Replace
        * tree-optimize.c (init_tree_optimization_passes): Replace
        the final DCE pass with a CD-DCE pass.
        the final DCE pass with a CD-DCE pass.
2004-02-01  Jan Hubicka  
2004-02-01  Jan Hubicka  
        * cgraphunit.c (cgraph_mark_inline_edge): Fix insertion to
        * cgraphunit.c (cgraph_mark_inline_edge): Fix insertion to
        cgraph_inline_hash.
        cgraph_inline_hash.
2004-01-30  Frank Ch. Eigler  
2004-01-30  Frank Ch. Eigler  
        * common.opt: Add support for -fmudflapth, -fmudflapir.
        * common.opt: Add support for -fmudflapth, -fmudflapir.
        * invoke.texi: Document them.
        * invoke.texi: Document them.
        * opts.c: Ditto.
        * opts.c: Ditto.
        * flags.h: Add new flags flag_mudflap_threads, _ignore_reads.
        * flags.h: Add new flags flag_mudflap_threads, _ignore_reads.
        * toplev.c: Initialize new flags.  Remove redundant code from
        * toplev.c: Initialize new flags.  Remove redundant code from
        lang_independent_options[].
        lang_independent_options[].
        * tree-mudflap.c (*): Support new flag_mudflap_threads encoding.
        * tree-mudflap.c (*): Support new flag_mudflap_threads encoding.
        (mf_xform_derefs_1): Support flag_mudflap_ignore_reads option.
        (mf_xform_derefs_1): Support flag_mudflap_ignore_reads option.
        * c-mudflap.c (mflang_flush_calls): Mark static ctor TREE_USED.
        * c-mudflap.c (mflang_flush_calls): Mark static ctor TREE_USED.
2004-01-30  Ian Lance Taylor  
2004-01-30  Ian Lance Taylor  
        * gengtype-yacc.y (bitfieldlen): Add empty action.
        * gengtype-yacc.y (bitfieldlen): Add empty action.
2004-01-30  Diego Novillo  
2004-01-30  Diego Novillo  
        * configure.ac: Move configuration for libbanshee and
        * configure.ac: Move configuration for libbanshee and
        libgmp from configure.in.
        libgmp from configure.in.
2004-01-30  Richard Henderson  
2004-01-30  Richard Henderson  
        PR opt/13524
        PR opt/13524
        * gengtype-yacc.y (struct_fields): Accept unnamed bitfields.
        * gengtype-yacc.y (struct_fields): Accept unnamed bitfields.
        (bitfieldlen): Split from ...
        (bitfieldlen): Split from ...
        (bitfieldopt): ... here.
        (bitfieldopt): ... here.
        * gimplify.c (mark_not_gimple): Remove.
        * gimplify.c (mark_not_gimple): Remove.
        (gimplify_call_expr): Don't ignore BUILT_IN_MD.
        (gimplify_call_expr): Don't ignore BUILT_IN_MD.
        * tree-dfa.c (struct walk_state): Remove is_not_gimple.
        * tree-dfa.c (struct walk_state): Remove is_not_gimple.
        (find_referenced_vars): Don't look for TREE_NOT_GIMPLE.
        (find_referenced_vars): Don't look for TREE_NOT_GIMPLE.
        (find_vars_r, add_referenced_var): Likewise.
        (find_vars_r, add_referenced_var): Likewise.
        * tree-ssa-operands.c (get_stmt_operands, get_expr_operands): Likewise.
        * tree-ssa-operands.c (get_stmt_operands, get_expr_operands): Likewise.
        * tree-simple.h (mark_not_gimple): Remove.
        * tree-simple.h (mark_not_gimple): Remove.
        * tree.h (struct tree_common): Remove not_gimple_flag.
        * tree.h (struct tree_common): Remove not_gimple_flag.
        (TREE_NOT_GIMPLE): Remove.
        (TREE_NOT_GIMPLE): Remove.
2004-01-29  Jason Merrill  
2004-01-29  Jason Merrill  
        PR c++/13865
        PR c++/13865
        * c-simplify.c (gimplify_for_stmt): Reorganize to fix cleanups.
        * c-simplify.c (gimplify_for_stmt): Reorganize to fix cleanups.
2004-01-29  Richard Henderson  
2004-01-29  Richard Henderson  
        PR c++/13543
        PR c++/13543
        * tree-inline.c (initialize_inlined_parameters): Register the
        * tree-inline.c (initialize_inlined_parameters): Register the
        substitute reference also.
        substitute reference also.
2004-01-29  Richard Henderson  
2004-01-29  Richard Henderson  
        * tree-inline.c (gimple_expand_calls_inline): Look inside
        * tree-inline.c (gimple_expand_calls_inline): Look inside
        RETURN_EXPR.
        RETURN_EXPR.
        * tree-pretty-print.c (dump_generic_node): If TDF_DETAILS, dump
        * tree-pretty-print.c (dump_generic_node): If TDF_DETAILS, dump
        both name and uid.
        both name and uid.
2004-01-29  Zdenek Dvorak  
2004-01-29  Zdenek Dvorak  
        * cfg.c (unlink_block): Reset prev_bb and next_bb.
        * cfg.c (unlink_block): Reset prev_bb and next_bb.
2004-01-29  Jeff Law 
2004-01-29  Jeff Law 
            Andrew MacLeod 
            Andrew MacLeod 
        * tree-ssa-live.h (tpa_next_partition): Correctly handle compressed
        * tree-ssa-live.h (tpa_next_partition): Correctly handle compressed
        elements.
        elements.
        * tree-ssa.c (coalesce_ssa_name): New argument, flags.  Callers
        * tree-ssa.c (coalesce_ssa_name): New argument, flags.  Callers
        updated.  Test SSANORM_COMBINE_TEMPS in flags rather than
        updated.  Test SSANORM_COMBINE_TEMPS in flags rather than
        flag_tree_combine_temps.
        flag_tree_combine_temps.
        (coalesce_vars): Either operand of a copy might not have a
        (coalesce_vars): Either operand of a copy might not have a
        partition when rewriting a subset of the variables out of SSA form.
        partition when rewriting a subset of the variables out of SSA form.
        (rewrite_vars_out_of_ssa): Honor -ftree-combine-temps by passing
        (rewrite_vars_out_of_ssa): Honor -ftree-combine-temps by passing
        in SSANORM_COMBINE_TEMPS in flags argument to remove_sas_form..
        in SSANORM_COMBINE_TEMPS in flags argument to remove_sas_form..
2004-01-29  Dale Johannesen  
2004-01-29  Dale Johannesen  
        * Makefile.in (OBJS-common):  Move tree-nomudflap.o...
        * Makefile.in (OBJS-common):  Move tree-nomudflap.o...
        (OBJS-archive): ...to here, and remove duplicate tree-optimize.o.
        (OBJS-archive): ...to here, and remove duplicate tree-optimize.o.
2004-01-28  Richard Henderson  
2004-01-28  Richard Henderson  
        PR middle-end/13898
        PR middle-end/13898
        * gimplify.c (gimplify_init_constructor): Invoke
        * gimplify.c (gimplify_init_constructor): Invoke
        lhd_set_decl_assembler_name on the now-static variable.
        lhd_set_decl_assembler_name on the now-static variable.
2004-01-28  Richard Henderson  
2004-01-28  Richard Henderson  
        PR opt/13798
        PR opt/13798
        * expr.c (is_zeros_p): Remove.  Change all callers to use
        * expr.c (is_zeros_p): Remove.  Change all callers to use
        initializer_zerop.
        initializer_zerop.
        (categorize_ctor_elements_1, categorize_ctor_elements): New.
        (categorize_ctor_elements_1, categorize_ctor_elements): New.
        (count_type_elements): New.
        (count_type_elements): New.
        (mostly_zeros_p): Use them.
        (mostly_zeros_p): Use them.
        * gimplify.c (tmp_var_id_num): Split out from create_tmp_var_raw.
        * gimplify.c (tmp_var_id_num): Split out from create_tmp_var_raw.
        (create_tmp_var_name): Likewise.
        (create_tmp_var_name): Likewise.
        (gimplify_init_constructor): Drop constructors to readonly memory
        (gimplify_init_constructor): Drop constructors to readonly memory
        as indicated by categorize_ctor_elements and can_move_by_pieces.
        as indicated by categorize_ctor_elements and can_move_by_pieces.
        * tree.c (initializer_zerop): Handle VECTOR_CST.  Don't check
        * tree.c (initializer_zerop): Handle VECTOR_CST.  Don't check
        AGGREGATE_TYPE_P for CONSTRUCTOR.
        AGGREGATE_TYPE_P for CONSTRUCTOR.
        * tree.h (categorize_ctor_elements): Declare.
        * tree.h (categorize_ctor_elements): Declare.
        (count_type_elements): Declare.
        (count_type_elements): Declare.
        * Makefile.in (gimplify.o): Update dependencies.
        * Makefile.in (gimplify.o): Update dependencies.
        (GTFILES): Add gimplify.c.
        (GTFILES): Add gimplify.c.
2004-01-27  Frank Ch. Eigler  
2004-01-27  Frank Ch. Eigler  
        * tree-mudflap.c (mx_register_decls): Support VLAs.
        * tree-mudflap.c (mx_register_decls): Support VLAs.
        (mf_xform_derefs_1): Disable checking shortcut for VLAs.
        (mf_xform_derefs_1): Disable checking shortcut for VLAs.
        * c-simplify.c (gimplify_decl_stmt): Add mudflap xref comment.
        * c-simplify.c (gimplify_decl_stmt): Add mudflap xref comment.
        * gimplify.c (gimplify_bind_expr): Ditto.
        * gimplify.c (gimplify_bind_expr): Ditto.
2004-01-27  Daniel Berlin  
2004-01-27  Daniel Berlin  
        * tree-ssa-pre.c:  Add more comments describing SSAPRE and
        * tree-ssa-pre.c:  Add more comments describing SSAPRE and
        the various functions.
        the various functions.
        (generate_expr_as_of_bb): Use PRED, a basic block argument, instead of
        (generate_expr_as_of_bb): Use PRED, a basic block argument, instead of
        j, the index of that bb.
        j, the index of that bb.
        (generate_vops_as_of_bb): Ditto.
        (generate_vops_as_of_bb): Ditto.
        (insert_occ_in_preorder_dt_order): Rename to
        (insert_occ_in_preorder_dt_order): Rename to
        create_and_insert_occ_in_preorder_dt_order.
        create_and_insert_occ_in_preorder_dt_order.
2004-01-27  Daniel Berlin  
2004-01-27  Daniel Berlin  
        * tree-ssa-pre.c (rename_1): Add some more comments.
        * tree-ssa-pre.c (rename_1): Add some more comments.
2004-01-25  Andrew Pinski  
2004-01-25  Andrew Pinski  
        PR c/13748
        PR c/13748
        * c-decl.c (finish_function): Do not pass
        * c-decl.c (finish_function): Do not pass
        the function on to optimizers if there was an error.
        the function on to optimizers if there was an error.
2004-01-23  Richard Henderson  
2004-01-23  Richard Henderson  
        PR opt/12941
        PR opt/12941
        * combine.c (SHIFT_COUNT_TRUNCATED): Provide default value.
        * combine.c (SHIFT_COUNT_TRUNCATED): Provide default value.
        (simplify_comparison): Don't simplify (eq (zero_extract c 1 r) 0)
        (simplify_comparison): Don't simplify (eq (zero_extract c 1 r) 0)
        if SHIFT_COUNT_TRUNCATED is set.
        if SHIFT_COUNT_TRUNCATED is set.
2004-01-21  Richard Henderson  
2004-01-21  Richard Henderson  
        PR c/11267
        PR c/11267
        * c-decl.c (c_finalize): New.
        * c-decl.c (c_finalize): New.
        (finish_function): Use it.  Genericize and finalize only non-nested
        (finish_function): Use it.  Genericize and finalize only non-nested
        functions.  Register nested functions with cgraph.
        functions.  Register nested functions with cgraph.
        * c-simplify.c: Include cgraph.h.
        * c-simplify.c: Include cgraph.h.
        (c_genericize): Genericize nested functions.
        (c_genericize): Genericize nested functions.
        * gimplify.c (gimplify_expr): Use DECL_SAVED_INSNS to access
        * gimplify.c (gimplify_expr): Use DECL_SAVED_INSNS to access
        the struct function for the context.
        the struct function for the context.
        * Makefile.in (c-simplify.o): Update dependencies.
        * Makefile.in (c-simplify.o): Update dependencies.
2004-01-21  Steven Bosscher  
2004-01-21  Steven Bosscher  
        PR opt/13767
        PR opt/13767
        * tree-cfg.c (simple_goto_p): Remove NONLOCAL_LABEL check.
        * tree-cfg.c (simple_goto_p): Remove NONLOCAL_LABEL check.
2004-01-21  Dale Johannesen  
2004-01-21  Dale Johannesen  
        * tree-dfa.c: Fix comment.
        * tree-dfa.c: Fix comment.
2004-01-21  Richard Henderson  
2004-01-21  Richard Henderson  
        PR opt/13681
        PR opt/13681
        * tree-ssa-operands.c (get_expr_operands): Handle (&x + c).
        * tree-ssa-operands.c (get_expr_operands): Handle (&x + c).
        * tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Handle
        * tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Handle
        flexible array members and lookalikes.
        flexible array members and lookalikes.
2004-01-21  Dale Johannesen  
2004-01-21  Dale Johannesen  
        * tree-ssa-dom.c (cprop_into_stmt):  Add convert call
        * tree-ssa-dom.c (cprop_into_stmt):  Add convert call
        to prevent type mismatches.
        to prevent type mismatches.
2004-01-21  Daniel Berlin  
2004-01-21  Daniel Berlin  
        * tree-ssa-pre.c (load_modified_phi_result): PARM_DECL is okay
        * tree-ssa-pre.c (load_modified_phi_result): PARM_DECL is okay
        to not have a defbb.
        to not have a defbb.
        (rename_1): Add a comment.
        (rename_1): Add a comment.
2004-01-21  Jeff Law  
2004-01-21  Jeff Law  
        * tree-ssa-dom.c (find_equivalent_equality_comparison): Treat
        * tree-ssa-dom.c (find_equivalent_equality_comparison): Treat
        CONVERT_EXPRs just like NOP_EXPRs.
        CONVERT_EXPRs just like NOP_EXPRs.
        (record_equivalences_from_stmt): Similarly.
        (record_equivalences_from_stmt): Similarly.
        (thread_across_edge): Fix formatting goof.
        (thread_across_edge): Fix formatting goof.
        * tree-ssa-dom.c (thread_across_edge): Remove bogus restriction
        * tree-ssa-dom.c (thread_across_edge): Remove bogus restriction
        which prevents threading around to the top of a loop.
        which prevents threading around to the top of a loop.
        * tree-ssa-dom.c (thread_across_edge): Handle SWITCH_EXPRs in the
        * tree-ssa-dom.c (thread_across_edge): Handle SWITCH_EXPRs in the
        target block in addition to COND_EXPRs.
        target block in addition to COND_EXPRs.
        * tree-ssa-dom.c (thread_across_edge): Create equivalences for
        * tree-ssa-dom.c (thread_across_edge): Create equivalences for
        PHIs before looking at the statements in the destination
        PHIs before looking at the statements in the destination
        block.
        block.
2004-01-20  Roger Sayle  
2004-01-20  Roger Sayle  
        * fold-const.c (fold_convert): Rename to fold_convert_const.
        * fold-const.c (fold_convert): Rename to fold_convert_const.
        (fold_convert_const): Change arguments to take a tree_code,
        (fold_convert_const): Change arguments to take a tree_code,
        a type and the operand/expression to be converted.  Return
        a type and the operand/expression to be converted.  Return
        NULL_TREE if no simplification is possible.  Add support for
        NULL_TREE if no simplification is possible.  Add support for
        FIX_CEIL_EXPR and FIX_FLOOR_EXPR in addition to FIX_TRUNC_EXPR.
        FIX_CEIL_EXPR and FIX_FLOOR_EXPR in addition to FIX_TRUNC_EXPR.
        (fold): Handle FIX_CEIL_EXPR and FIX_FLOOR_EXPR.
        (fold): Handle FIX_CEIL_EXPR and FIX_FLOOR_EXPR.
        Adjust call to fold_convert to match new fold_convert_const.
        Adjust call to fold_convert to match new fold_convert_const.
        Avoid modifying the tree passed to fold in-place.
        Avoid modifying the tree passed to fold in-place.
        (nondestructive_fold_unary_to_constant): Likewise, simplify
        (nondestructive_fold_unary_to_constant): Likewise, simplify
        call to fold_convert to match new fold_convert_const.
        call to fold_convert to match new fold_convert_const.
2004-01-20  Daniel Berlin  
2004-01-20  Daniel Berlin  
        * tree-alias-ander.c (andersen_op_assign): Update
        * tree-alias-ander.c (andersen_op_assign): Update
        prototype. Make this handle &x in the operands using
        prototype. Make this handle &x in the operands using
        the addrargs parameter.
        the addrargs parameter.
        (andersen_init): Turn off ip_partial until variables
        (andersen_init): Turn off ip_partial until variables
        aliasing variables in other functions is resolved.
        aliasing variables in other functions is resolved.
        (andersen_add_var): Use newly renamed alias_var_new_with_aterm.
        (andersen_add_var): Use newly renamed alias_var_new_with_aterm.
        Fix comment.
        Fix comment.
        (andersen_add_var_same): Ditto.
        (andersen_add_var_same): Ditto.
        (andersen_function_call): Use ip_partial, not flag_unit_at_a_time.
        (andersen_function_call): Use ip_partial, not flag_unit_at_a_time.
        * tree-alias-common.c (get_values_from_constructor): Add bitmap
        * tree-alias-common.c (get_values_from_constructor): Add bitmap
        and int * arguments. Used to mark operands that we are taking
        and int * arguments. Used to mark operands that we are taking
        address of.
        address of.
        (get_alias_var_decl): We should never see FIELD_DECL's right now.
        (get_alias_var_decl): We should never see FIELD_DECL's right now.
        (intra_function_call): Reverse ordering for slightly faster
        (intra_function_call): Reverse ordering for slightly faster
        projection merging.
        projection merging.
        (find_op_of_decl): New function.
        (find_op_of_decl): New function.
        (find_func_aliases): Use it.
        (find_func_aliases): Use it.
        Comment x = foo.y case.
        Comment x = foo.y case.
        Move get_alias_var_decl of arguments so we only call it if
        Move get_alias_var_decl of arguments so we only call it if
        necessary.
        necessary.
        Handle address of arguments in operations.
        Handle address of arguments in operations.
        (create_fun_alias_var): tvar->var.
        (create_fun_alias_var): tvar->var.
        Set context of fakeargs.
        Set context of fakeargs.
        Set context of fakedecls.
        Set context of fakedecls.
        Set DECL_PTA_ALIASVAR of RETURN_DECL's.
        Set DECL_PTA_ALIASVAR of RETURN_DECL's.
        (create_fun_alias_var_ptf): tvar->var.
        (create_fun_alias_var_ptf): tvar->var.
        Set context of fakedecls.
        Set context of fakedecls.
        (create_alias_vars): Only create alias vars for globals
        (create_alias_vars): Only create alias vars for globals
        with DECL_INITIAL's.
        with DECL_INITIAL's.
        * tree-alias-common.h (struct tree_alias_ops):
        * tree-alias-common.h (struct tree_alias_ops):
        Update op_assign arguments.
        Update op_assign arguments.
        (may_alias): Fix comment.
        (may_alias): Fix comment.
        (same_points_to_set): Ditto.
        (same_points_to_set): Ditto.
        (empty_points_to_set): Ditto.
        (empty_points_to_set): Ditto.
        * tree-alias-type.h: Rename alias_tvar_new_with_aterm
        * tree-alias-type.h: Rename alias_tvar_new_with_aterm
        -> alias_var_new_with_aterm.
        -> alias_var_new_with_aterm.
        * tree-alias-type.c: Ditto.
        * tree-alias-type.c: Ditto.
2004-01-20  Richard Henderson  
2004-01-20  Richard Henderson  
        * tree-sra.c (get_scalar_for_field): Validate field.
        * tree-sra.c (get_scalar_for_field): Validate field.
        (create_scalar_copies): Iterate over rhs fields too.
        (create_scalar_copies): Iterate over rhs fields too.
2004-01-19  Dale Johannesen  
2004-01-19  Dale Johannesen  
        * params.def:  Add PARAM_MAX_CALLS_GLOBAL_VAR and
        * params.def:  Add PARAM_MAX_CALLS_GLOBAL_VAR and
        PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR.
        PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR.
        params.h:  Ditto.
        params.h:  Ditto.
        tree-dfa.c:  Use them.
        tree-dfa.c:  Use them.
        doc/invoke.texi:  Document them.
        doc/invoke.texi:  Document them.
2004-01-19  Jeff Law  
2004-01-19  Jeff Law  
        * tree-ssa.c (insert_phi_nodes_for): Always use fully pruned
        * tree-ssa.c (insert_phi_nodes_for): Always use fully pruned
        SSA form.
        SSA form.
        * tree-flow.h: Update copyright dates.
        * tree-flow.h: Update copyright dates.
        (register_new_def): Declare.
        (register_new_def): Declare.
        * tree-ssa-dom.c: Update copyright dates.
        * tree-ssa-dom.c: Update copyright dates.
        Add tracking of current definition of each program variable just
        Add tracking of current definition of each program variable just
        like we do when rewriting into SSA form.
        like we do when rewriting into SSA form.
        (get_value_for, set_value_for): Handle either an SSA_NAME or
        (get_value_for, set_value_for): Handle either an SSA_NAME or
        regular variable.
        regular variable.
        (tree_ssa_dominator_optimize): Initialize and update CURRDEFS.
        (tree_ssa_dominator_optimize): Initialize and update CURRDEFS.
        If we thread through a block with real statements, the destination
        If we thread through a block with real statements, the destination
        of those statements must be rewritten too.
        of those statements must be rewritten too.
        (thread_across_edge): Skip nop statements at the start of a
        (thread_across_edge): Skip nop statements at the start of a
        block.
        block.
        (dom_opt_initialize_block_local_data): Clear block_defs
        (dom_opt_initialize_block_local_data): Clear block_defs
        appropriately.
        appropriately.
        (record_equivalences_from_phis): Accept walk_data structure.
        (record_equivalences_from_phis): Accept walk_data structure.
        Call register_new_def appropriately.
        Call register_new_def appropriately.
        (optimize_stmt): Call register_new_defs_for_stmt.
        (optimize_stmt): Call register_new_defs_for_stmt.
        (dom_opt_finalize_block): Restore CURRDEFS appropriately.
        (dom_opt_finalize_block): Restore CURRDEFS appropriately.
        (register_new_definitions_for_stmt): New.
        (register_new_definitions_for_stmt): New.
        * tree-ssa.c: Update copyright dates.
        * tree-ssa.c: Update copyright dates.
        (register_new_def): No longer static.  Accept additional argument
        (register_new_def): No longer static.  Accept additional argument
        for the table to hold the new definition.  Callers updated.
        for the table to hold the new definition.  Callers updated.
        * gimplify.c: Update copyright dates.
        * gimplify.c: Update copyright dates.
        * tree-cfg.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree.h: Likewise.
        * tree.h: Likewise.
        * tree-iterator.c, tree-iterator.c: Use GCC rather than GNU CC.
        * tree-iterator.c, tree-iterator.c: Use GCC rather than GNU CC.
        * tree-ssa-pre.c, tree-ssa-live.h: Likewise.
        * tree-ssa-pre.c, tree-ssa-live.h: Likewise.
2004-01-19  Daniel Berlin  
2004-01-19  Daniel Berlin  
        * timevar.def (TV_TREE_SPLIT_EDGES): New timevar.
        * timevar.def (TV_TREE_SPLIT_EDGES): New timevar.
        * tree-ssa-pre.c (split_critical_edges): Move from here
        * tree-ssa-pre.c (split_critical_edges): Move from here
        (pass_pre): Add PROP_no_crit_edges as required.
        (pass_pre): Add PROP_no_crit_edges as required.
        * tree-cfg.c (split_critical_edges): to here.
        * tree-cfg.c (split_critical_edges): to here.
        (pass_split_crit_edges): New pass.
        (pass_split_crit_edges): New pass.
        * tree-optimize.c (tree_optimization_passes): Add NEXT_PASS
        * tree-optimize.c (tree_optimization_passes): Add NEXT_PASS
        (split_crit_edges).
        (split_crit_edges).
        * tree-pass.h: Add PROP_no_crit_edges.
        * tree-pass.h: Add PROP_no_crit_edges.
        (pass_split_crit_edges): Declared.
        (pass_split_crit_edges): Declared.
2004-01-19  Frank Ch. Eigler  
2004-01-19  Frank Ch. Eigler  
        * tree-mudflap.c (mf_build_check_statement_for): Tolerate
        * tree-mudflap.c (mf_build_check_statement_for): Tolerate
        incoming locus NULL pointer.
        incoming locus NULL pointer.
2004-01-18  Richard Henderson  
2004-01-18  Richard Henderson  
        * builtins.c (simplify_builtin_strcpy): Export.  Take strlen argument.
        * builtins.c (simplify_builtin_strcpy): Export.  Take strlen argument.
        (simplify_builtin_strncpy, simplify_builtin_strcmp): Similarly.
        (simplify_builtin_strncpy, simplify_builtin_strcmp): Similarly.
        (simplify_builtin_strncmp): Similarly.
        (simplify_builtin_strncmp): Similarly.
        (simplify_builtin): Update to match.
        (simplify_builtin): Update to match.
        * expr.h (simplify_builtin_strcmp, simplify_builtin_strncmp,
        * expr.h (simplify_builtin_strcmp, simplify_builtin_strncmp,
        simplify_builtin_strcpy, simplify_builtin_strncpy): Declare.
        simplify_builtin_strcpy, simplify_builtin_strncpy): Declare.
        * tree-pass.h (pass_fold_builtins): New.
        * tree-pass.h (pass_fold_builtins): New.
        * tree-optimize.c (init_tree_optimization_passes): Add it.
        * tree-optimize.c (init_tree_optimization_passes): Add it.
        * tree-ssa-ccp.c (ccp_fold_builtin): Handle BUILT_IN_STRCPY,
        * tree-ssa-ccp.c (ccp_fold_builtin): Handle BUILT_IN_STRCPY,
        BUILT_IN_STRNCPY, BUILT_IN_STRCMP, BUILT_IN_STRNCMP.
        BUILT_IN_STRNCPY, BUILT_IN_STRCMP, BUILT_IN_STRNCMP.
        (get_strlen): Don't cast to size_t.
        (get_strlen): Don't cast to size_t.
        (execute_fold_all_builtins, pass_fold_builtins): New.
        (execute_fold_all_builtins, pass_fold_builtins): New.
2004-01-19  Jan Hubicka  
2004-01-19  Jan Hubicka  
        PR opt/13729
        PR opt/13729
        * cgraphunit.c (cgraph_finalize_compilation_unit): Fix memory leak.
        * cgraphunit.c (cgraph_finalize_compilation_unit): Fix memory leak.
        (cgraph_remove_unreachable_nodes):  Do not mix analyzed and
        (cgraph_remove_unreachable_nodes):  Do not mix analyzed and
        DECL_SAVED_TREE flags.
        DECL_SAVED_TREE flags.
2004-01-18  Richard Henderson  
2004-01-18  Richard Henderson  
        * tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): Remove.
        * tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): Remove.
        (sra_candidates, needs_copy_in): Use a bitmap.  Update all users.
        (sra_candidates, needs_copy_in): Use a bitmap.  Update all users.
        (struct sra_elt, sra_elt_hash, sra_elt_eq): New.
        (struct sra_elt, sra_elt_hash, sra_elt_eq): New.
        (sra_map_size): Remove.
        (sra_map_size): Remove.
        (sra_map): Use a htab_t.
        (sra_map): Use a htab_t.
        (lookup_scalar): Update to match.
        (lookup_scalar): Update to match.
        (get_scalar_for_field, get_scalar_for_complex_part): Likewise.
        (get_scalar_for_field, get_scalar_for_complex_part): Likewise.
        (scalarize_structure_assignment): Use annotate_all_with_locus.
        (scalarize_structure_assignment): Use annotate_all_with_locus.
        (csc_build_component_ref): Remove index argument.
        (csc_build_component_ref): Remove index argument.
        (csc_build_complex_part): Take tree_code, not index.
        (csc_build_complex_part): Take tree_code, not index.
        (create_scalar_copies): Don't collect indicies.
        (create_scalar_copies): Don't collect indicies.
        (emit_scalar_copies): New.
        (emit_scalar_copies): New.
        (scalarize_modify_expr, scalarize_tree_list): Use it.
        (scalarize_modify_expr, scalarize_tree_list): Use it.
        (scalarize_return_expr): Likewise.
        (scalarize_return_expr): Likewise.
        (scalarize_structures): Simplify needs_copy_in iteration.
        (scalarize_structures): Simplify needs_copy_in iteration.
        (scalarize_call_expr): Use annotate_all_with_locus.
        (scalarize_call_expr): Use annotate_all_with_locus.
        (dump_sra_map_trav): Split from ...
        (dump_sra_map_trav): Split from ...
        (dump_sra_map): ... here.  Update for hash table.
        (dump_sra_map): ... here.  Update for hash table.
        (tree_sra): Update for new datastructures.
        (tree_sra): Update for new datastructures.
2004-01-18  Richard Henderson  
2004-01-18  Richard Henderson  
        * tree-cfg.c (dump_function_to_file): Move ";; Function" header ...
        * tree-cfg.c (dump_function_to_file): Move ";; Function" header ...
        * tree-optimize.c (execute_one_pass): ... here.
        * tree-optimize.c (execute_one_pass): ... here.
2004-01-17  Daniel Berlin  
2004-01-17  Daniel Berlin  
        * tree-alias-common.c: s@_typevar@_var@g, s@_TVAR@_VAR@g,
        * tree-alias-common.c: s@_typevar@_var@g, s@_TVAR@_VAR@g,
        s@_TYPEVAR@_VAR@g
        s@_TYPEVAR@_VAR@g
        * tree-alias-common.h: Ditto
        * tree-alias-common.h: Ditto
        * tree.h: Ditto
        * tree.h: Ditto
        * tree-alias-ander.c: Ditto
        * tree-alias-ander.c: Ditto
        * tree-alias-type.c: Ditto
        * tree-alias-type.c: Ditto
        * tree-alias-type.h: Ditto
        * tree-alias-type.h: Ditto
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        * tree-complex.c (gimplify_val): Copy TREE_BLOCK.
        * tree-complex.c (gimplify_val): Copy TREE_BLOCK.
        * tree-complex.c (gimplify_val): New.
        * tree-complex.c (gimplify_val): New.
        (extract_component, do_binop, do_unop): Use it.
        (extract_component, do_binop, do_unop): Use it.
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        * tree-complex.c (expand_complex_operations_1): Fix RETURN_EXPR
        * tree-complex.c (expand_complex_operations_1): Fix RETURN_EXPR
        thinko in last change.
        thinko in last change.
2004-01-18  Zdenek Dvorak  
2004-01-18  Zdenek Dvorak  
        * cfghooks.c (split_block): Don't redirect edges.
        * cfghooks.c (split_block): Don't redirect edges.
        * cfgrtl.c (rtl_split_block): Do it here.
        * cfgrtl.c (rtl_split_block): Do it here.
        * tree-cfg.c (tree_split_block): Ditto.
        * tree-cfg.c (tree_split_block): Ditto.
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        * tree-cfg.c (verify_expr): Tidy.  Check COND_EXPR for boolean
        * tree-cfg.c (verify_expr): Tidy.  Check COND_EXPR for boolean
        condition.
        condition.
2004-01-17  Jan Hubicka  
2004-01-17  Jan Hubicka  
        PR optimization/11761
        PR optimization/11761
        * Makefile.in: Remove tree-simple.c from GTYized files.
        * Makefile.in: Remove tree-simple.c from GTYized files.
        * tree-dfa.c (find_addressable_vars): Parse nontrivial ADDR_EXPRs.
        * tree-dfa.c (find_addressable_vars): Parse nontrivial ADDR_EXPRs.
        (discover_nonconstant_array_refs_r): New static function.
        (discover_nonconstant_array_refs_r): New static function.
        (discover_nonconstant_array_refs): New global function.
        (discover_nonconstant_array_refs): New global function.
        * tree-flow.h (discover_nonconstant_array_refs): Declare.
        * tree-flow.h (discover_nonconstant_array_refs): Declare.
        * tree-simple.c (types_checked, types_in_memory): Kill.
        * tree-simple.c (types_checked, types_in_memory): Kill.
        (struct_needs_to_live_in_memory): Kill.
        (struct_needs_to_live_in_memory): Kill.
        (needs_to_live_in_memory): aggregates are safe.
        (needs_to_live_in_memory): aggregates are safe.
        * tree-ssa.c (rewrite_out_of_ssa): Call the new function.
        * tree-ssa.c (rewrite_out_of_ssa): Call the new function.
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        PR opt/13718
        PR opt/13718
        * tree-complex.c (expand_complex_comparison): Handle COND_EXPR.
        * tree-complex.c (expand_complex_comparison): Handle COND_EXPR.
        (expand_complex_operations_1): Likewise.
        (expand_complex_operations_1): Likewise.
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        * tree-sra.c (scalarize_tree_list): Take bitmap argument to
        * tree-sra.c (scalarize_tree_list): Take bitmap argument to
        avoid emitting duplicates.  Update all callers.
        avoid emitting duplicates.  Update all callers.
2004-01-17  Richard Henderson  
2004-01-17  Richard Henderson  
        PR opt/13718
        PR opt/13718
        * tree-complex.c (expand_complex_comparison): New.
        * tree-complex.c (expand_complex_comparison): New.
        (expand_complex_operations_1): Handle EQ_EXPR and NE_EXPR.
        (expand_complex_operations_1): Handle EQ_EXPR and NE_EXPR.
2004-01-16  Daniel Berlin  
2004-01-16  Daniel Berlin  
        * tree-alias-common.c (get_alias_var): Handle BIT_FIELD_REF.
        * tree-alias-common.c (get_alias_var): Handle BIT_FIELD_REF.
        (find_func_aliases): Ditto.
        (find_func_aliases): Ditto.
        Update for fact that basic component_refs are no longer
        Update for fact that basic component_refs are no longer
        is_gimple_variable.
        is_gimple_variable.
        (create_fun_alias_var): Set DECL_CONTEXT on our faked declarations.
        (create_fun_alias_var): Set DECL_CONTEXT on our faked declarations.
        (pass_del_pta): PTA dumps info on delete, so it needs a name.
        (pass_del_pta): PTA dumps info on delete, so it needs a name.
2004-01-16  Steven Bosscher  
2004-01-16  Steven Bosscher  
        * tree-optimize.c (init_tree_optimization_passes): Run DCE
        * tree-optimize.c (init_tree_optimization_passes): Run DCE
        before the first dominator optimization pass.
        before the first dominator optimization pass.
2004-01-15  Brian Booth 
2004-01-15  Brian Booth 
            Richard Henderson  
            Richard Henderson  
        * tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): New.
        * tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): New.
        (sra_map_size): New.
        (sra_map_size): New.
        (make_temp): New.
        (make_temp): New.
        (mark_all_vdefs): New.
        (mark_all_vdefs): New.
        (is_sra_candidate_decl): New.
        (is_sra_candidate_decl): New.
        (is_sra_candidate_ref): New.
        (is_sra_candidate_ref): New.
        (lookup_scalar): Use sra_map_size, make_temp.
        (lookup_scalar): Use sra_map_size, make_temp.
        (get_scalar_for_field): Rename from get_scalar_for.
        (get_scalar_for_field): Rename from get_scalar_for.
        (get_scalar_for_complex_part): New.
        (get_scalar_for_complex_part): New.
        (can_be_scalarized_p): Handle COMPLEX_TYPE.
        (can_be_scalarized_p): Handle COMPLEX_TYPE.
        (scalarize_component_ref): Handle REAL/IMAGPART_EXPR.
        (scalarize_component_ref): Handle REAL/IMAGPART_EXPR.
        (scalarize_structure_assignment): Tidy.
        (scalarize_structure_assignment): Tidy.
        (find_candidates_for_sra): Handle COMPLEX_TYPE, return bool.
        (find_candidates_for_sra): Handle COMPLEX_TYPE, return bool.
        (csc_assign, csc_build_component_ref): Split out from ...
        (csc_assign, csc_build_component_ref): Split out from ...
        (create_scalar_copies): ... here.  Handle COMPLEX_TYPE.
        (create_scalar_copies): ... here.  Handle COMPLEX_TYPE.
        (csc_build_complex_part): New.
        (csc_build_complex_part): New.
        (scalarize_modify_expr): Use is_sra_candidate_foo.
        (scalarize_modify_expr): Use is_sra_candidate_foo.
        (scalarize_tree_list): Likewise.
        (scalarize_tree_list): Likewise.
        (scalarize_return_expr): Likewise.
        (scalarize_return_expr): Likewise.
        (dump_sra_map): Split out from ...
        (dump_sra_map): Split out from ...
        (tree_sra): ... here.  Tidy.
        (tree_sra): ... here.  Tidy.
2004-01-15  Frank Ch. Eigler  
2004-01-15  Frank Ch. Eigler  
        * tree-mudflap.c (mf_xform_derefs): Accept void return statements.
        * tree-mudflap.c (mf_xform_derefs): Accept void return statements.
2004-01-15  Andrew MacLeod  
2004-01-15  Andrew MacLeod  
            Jeff Law  
            Jeff Law  
        * tree-ssa-dom.c (remove_local_expressions_from_table): New function
        * tree-ssa-dom.c (remove_local_expressions_from_table): New function
        extracted from dom_opt_finalize_block.
        extracted from dom_opt_finalize_block.
        (restore_vars_to_originalvalue): Likewise.
        (restore_vars_to_originalvalue): Likewise.
        (extract_true_false_edges_from_block): Likewise.
        (extract_true_false_edges_from_block): Likewise.
        (thread_across_edge): Handle if (cond) too.
        (thread_across_edge): Handle if (cond) too.
        (dom_opt_finalize_block): Use new functions.  Handle if (cond).
        (dom_opt_finalize_block): Use new functions.  Handle if (cond).
        * tree-ssa-dom.c (thread_across_edge): Accept dom_walk argument.
        * tree-ssa-dom.c (thread_across_edge): Accept dom_walk argument.
        Record temporary equivalences created by PHIs and temporarily
        Record temporary equivalences created by PHIs and temporarily
        const/copy propagate into conditionals.
        const/copy propagate into conditionals.
        (dom_opt_finalize_block): Thread across an edge to a dominated block
        (dom_opt_finalize_block): Thread across an edge to a dominated block
        if the dominated block has PHIs.  Remove temporary equivalenecs
        if the dominated block has PHIs.  Remove temporary equivalenecs
        created by PHIs in thread_across_edge.  Update code to restore the
        created by PHIs in thread_across_edge.  Update code to restore the
        various hash tables to use the actual varray rather than a local
        various hash tables to use the actual varray rather than a local
        copy of the varray.
        copy of the varray.
        (simplify_rhs_and_lookup_avail_expr): Set the condition's code
        (simplify_rhs_and_lookup_avail_expr): Set the condition's code
        before settings its operands.
        before settings its operands.
        * tree-ssa.c (create_temp): Use add_referenced_var rather than
        * tree-ssa.c (create_temp): Use add_referenced_var rather than
        an incomplete inline of its behavior.  Also make sure to
        an incomplete inline of its behavior.  Also make sure to
        set is_dereferenced_{load,store}, is_call_clobbered and is_stored.
        set is_dereferenced_{load,store}, is_call_clobbered and is_stored.
        * tree-ssa-live.c (build_tree_conflict_graph): Correctly handle
        * tree-ssa-live.c (build_tree_conflict_graph): Correctly handle
        case where the result of a PHI is unused.
        case where the result of a PHI is unused.
2004-01-15  Diego Novillo  
2004-01-15  Diego Novillo  
        * cfghooks.c (predicted_by_p): Add missing return.
        * cfghooks.c (predicted_by_p): Add missing return.
2004-01-15  Richard Henderson  
2004-01-15  Richard Henderson  
        * tree-ssa-dom.c (optimize_stmt): Dump new statement if
        * tree-ssa-dom.c (optimize_stmt): Dump new statement if
        folding succeeded.
        folding succeeded.
2004-01-15  Kazu Hirata  
2004-01-15  Kazu Hirata  
        * tree-cfg.c: Fix comment typos.
        * tree-cfg.c: Fix comment typos.
        * tree-eh.c: Likewise.
        * tree-eh.c: Likewise.
        * tree-inline.c: Likewise.
        * tree-inline.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-operands.c: Likewise.
        * tree-ssa-operands.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-tailcall.c: Likewise.
        * tree-tailcall.c: Likewise.
2004-01-14  Jan Hubicka  
2004-01-14  Jan Hubicka  
        * basic-block.h: Include predict.h
        * basic-block.h: Include predict.h
        (tree_predicted_by_p, rtl_predicted_by_p,  rtl_predict_edge,
        (tree_predicted_by_p, rtl_predicted_by_p,  rtl_predict_edge,
        predict_edge_def): Declare.
        predict_edge_def): Declare.
        * cfghooks.h (cfg_hooks): add predict_edge and predicted_by_p
        * cfghooks.h (cfg_hooks): add predict_edge and predicted_by_p
        (predict_edge, predicted_by_p): Declare.
        (predict_edge, predicted_by_p): Declare.
        * cfghooks.c (predict_edge, predicted_by_p): Declare.
        * cfghooks.c (predict_edge, predicted_by_p): Declare.
        * cfgrtl (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add new hooks.
        * cfgrtl (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add new hooks.
        * cse.c (struct cse_basic_block_data): Rename enum values to not
        * cse.c (struct cse_basic_block_data): Rename enum values to not
        conflict with profile.h; update all uses.
        conflict with profile.h; update all uses.
        * predict.c:  Include tree-flow.h, ggc.h, tree-dump.h
        * predict.c:  Include tree-flow.h, ggc.h, tree-dump.h
        (predicted_by_p): Rename to ...
        (predicted_by_p): Rename to ...
        (rtl_predicted_by_p): .. this one; make global
        (rtl_predicted_by_p): .. this one; make global
        (tree_predicted_by_p): New.
        (tree_predicted_by_p): New.
        (dump_prediction): Add FILE argument.
        (dump_prediction): Add FILE argument.
        (predict_edge): Rename to ...
        (predict_edge): Rename to ...
        (rtl_predict_edge): .. this one.
        (rtl_predict_edge): .. this one.
        (tree_predict_edge): New.
        (tree_predict_edge): New.
        (combine_predictions_for_insn): Update calls of predict_edge.
        (combine_predictions_for_insn): Update calls of predict_edge.
        (predict_loops): Break out from ...
        (predict_loops): Break out from ...
        (estimate_probability): ... here; update comments; move updating
        (estimate_probability): ... here; update comments; move updating
        of unknown probabilities from ...
        of unknown probabilities from ...
        (estimate_bb_frequencies): ... here.
        (estimate_bb_frequencies): ... here.
        (combine_predictions_for_bb): New.
        (combine_predictions_for_bb): New.
        (tree_predict_by_opcode): New.
        (tree_predict_by_opcode): New.
        (tree_estimate_probability): New.
        (tree_estimate_probability): New.
        * predict.def (PRED_TREE_POINTER, PRED_TREE_OPCODE_POSITIVE,
        * predict.def (PRED_TREE_POINTER, PRED_TREE_OPCODE_POSITIVE,
        PRED_TREE_OPCODE_NONEQUAL, PRED_TREE_FPOPCODE): New predictors.
        PRED_TREE_OPCODE_NONEQUAL, PRED_TREE_FPOPCODE): New predictors.
        * predict.h: Add include guard.
        * predict.h: Add include guard.
        (predict_edge, predict_edge_def): Move prototypes to basic_block.h
        (predict_edge, predict_edge_def): Move prototypes to basic_block.h
        * tree-cfg.c (tree_cfg_hooks): Add prediction hooks.
        * tree-cfg.c (tree_cfg_hooks): Add prediction hooks.
        * tree-dump.c (dump_files): Add profile.
        * tree-dump.c (dump_files): Add profile.
        * tree-flow.h (struct edge_prediction): New structure.
        * tree-flow.h (struct edge_prediction): New structure.
        (struct bb_ann_d): Add field predictions.
        (struct bb_ann_d): Add field predictions.
        (tree_estimate_probability): Declare.
        (tree_estimate_probability): Declare.
        * tree-optimize.c (optimize_function_tree): Call tree_estimate_probability.
        * tree-optimize.c (optimize_function_tree): Call tree_estimate_probability.
        * tree.h (tree_dump_index): Add TDI_profile.
        * tree.h (tree_dump_index): Add TDI_profile.
        * tree-pass.h (pass_profile): Declare.
        * tree-pass.h (pass_profile): Declare.
2004-01-14  Zdenek Dvorak  
2004-01-14  Zdenek Dvorak  
        * basic-block.h (find_basic_blocks, cleanup_cfg,
        * basic-block.h (find_basic_blocks, cleanup_cfg,
        delete_unreachable_blocks, merge_seq_blocks): Declare.
        delete_unreachable_blocks, merge_seq_blocks): Declare.
        * cfgcleanup.c (merge_seq_blocks): New.
        * cfgcleanup.c (merge_seq_blocks): New.
        * output.h (find_basic_blocks, cleanup_cfg, delete_unreachable_blocks):
        * output.h (find_basic_blocks, cleanup_cfg, delete_unreachable_blocks):
        Declarations moved to basic-block.h.
        Declarations moved to basic-block.h.
        * tree-cfg.c (tree_merge_blocks, tree_can_merge_blocks_p): New.
        * tree-cfg.c (tree_merge_blocks, tree_can_merge_blocks_p): New.
        (cleanup_tree_cfg): Call merge_seq_blocks.
        (cleanup_tree_cfg): Call merge_seq_blocks.
        (tree_cfg_hooks): Add tree_can_merge_blocks_p and tree_merge_blocks.
        (tree_cfg_hooks): Add tree_can_merge_blocks_p and tree_merge_blocks.
2004-01-14  Zdenek Dvorak  
2004-01-14  Zdenek Dvorak  
        * tree-cfg.c (tree_make_forwarder_block): Fix.
        * tree-cfg.c (tree_make_forwarder_block): Fix.
2004-01-14  Richard Henderson  
2004-01-14  Richard Henderson  
        * tree-complex.c: New file.
        * tree-complex.c: New file.
        * Makefile.in (OBJS-common): Add it.
        * Makefile.in (OBJS-common): Add it.
        * tree-pass.h (pass_lower_complex): New.
        * tree-pass.h (pass_lower_complex): New.
        * tree-optimize.c (init_tree_optimization_passes): Add it.
        * tree-optimize.c (init_tree_optimization_passes): Add it.
2004-01-14  Zdenek Dvorak  
2004-01-14  Zdenek Dvorak  
        * Makefile.in (tree-ssa-loop.o): Add cfgloop.h dependency.
        * Makefile.in (tree-ssa-loop.o): Add cfgloop.h dependency.
        (cfghooks.o): Add TIMEVAR_H and toplev.h dependency.
        (cfghooks.o): Add TIMEVAR_H and toplev.h dependency.
        * basic-block.h (struct edge_def): Use ir_type instead testing of
        * basic-block.h (struct edge_def): Use ir_type instead testing of
        cfg_hooks directly.
        cfg_hooks directly.
        (tidy_fallthru_edge, tidy_fallthru_edges, dump_bb, verify_flow_info):
        (tidy_fallthru_edge, tidy_fallthru_edges, dump_bb, verify_flow_info):
        Declaration removed.
        Declaration removed.
        * cfg.c (verify_flow_info, dump_bb): Moved to cfghooks.c.
        * cfg.c (verify_flow_info, dump_bb): Moved to cfghooks.c.
        * cfgcleanup.c (try_simplify_condjump): Changed due to change of
        * cfgcleanup.c (try_simplify_condjump): Changed due to change of
        tidy_fallthru_edge.
        tidy_fallthru_edge.
        * cfghooks.c: Include timevar.h and toplev.h.
        * cfghooks.c: Include timevar.h and toplev.h.
        (cfg_hooks): Made static.
        (cfg_hooks): Made static.
        (tree_register_cfg_hooks, ir_type): New.
        (tree_register_cfg_hooks, ir_type): New.
        (verify_flow_info, dump_bb): Moved from cfg.c.
        (verify_flow_info, dump_bb): Moved from cfg.c.
        (redirect_edge_and_branch, redirect_edge_and_branch_force,
        (redirect_edge_and_branch, redirect_edge_and_branch_force,
        split_block, split_block_after_labels, move_block_after,
        split_block, split_block_after_labels, move_block_after,
        delete_basic_block, split_edge, create_basic_block,
        delete_basic_block, split_edge, create_basic_block,
        create_empty_bb, can_merge_blocks_p, merge_blocks,
        create_empty_bb, can_merge_blocks_p, merge_blocks,
        make_forwarder_block, tidy_fallthru_edge, tidy_fallthru_edges): New.
        make_forwarder_block, tidy_fallthru_edge, tidy_fallthru_edges): New.
        * cfghooks.h (struct cfg_hooks): Modified.
        * cfghooks.h (struct cfg_hooks): Modified.
        (redirect_edge_and_branch, redirect_edge_and_branch_force, split_block,
        (redirect_edge_and_branch, redirect_edge_and_branch_force, split_block,
        delete_basic_block, split_edge, create_basic_block, can_merge_blocks_p,
        delete_basic_block, split_edge, create_basic_block, can_merge_blocks_p,
        merge_blocks, make_forwarder_block): Changed into functions.
        merge_blocks, make_forwarder_block): Changed into functions.
        (loop_optimizer_init, loop_optimizer_finalize): Removed.
        (loop_optimizer_init, loop_optimizer_finalize): Removed.
        (HEADER_BLOCK, LATCH_EDGE): Moved into cfgloop.c.
        (HEADER_BLOCK, LATCH_EDGE): Moved into cfgloop.c.
        (tidy_fallthru_edge, tidy_fallthru_edges, create_empty_bb,
        (tidy_fallthru_edge, tidy_fallthru_edges, create_empty_bb,
        verify_flow_info, dump_bb, ir_type): Declare.
        verify_flow_info, dump_bb, ir_type): Declare.
        (cfg_layout_rtl_cfg_hooks): Declare.
        (cfg_layout_rtl_cfg_hooks): Declare.
        * cfglayout.c (copy_bbs): Don't call add_to_dominance_info.
        * cfglayout.c (copy_bbs): Don't call add_to_dominance_info.
        * cfgloop.c (HEADER_BLOCK, LATCH_EDGE): Moved from cfghooks.h.
        * cfgloop.c (HEADER_BLOCK, LATCH_EDGE): Moved from cfghooks.h.
        (update_latch_info, mfb_keep_just, mfb_keep_nonlatch): New functions.
        (update_latch_info, mfb_keep_just, mfb_keep_nonlatch): New functions.
        (canonicalize_loop_headers): Use new semantics of make_forwarder_block.
        (canonicalize_loop_headers): Use new semantics of make_forwarder_block.
        * cfgloop.h (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        * cfgloop.h (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        Removed.
        Removed.
        (loop_optimizer_init, loop_optimizer_finalize): Declare.
        (loop_optimizer_init, loop_optimizer_finalize): Declare.
        * cfgloopmanip.c (split_loop_bb): Don't update dominators.
        * cfgloopmanip.c (split_loop_bb): Don't update dominators.
        (remove_bbs): Don't call remove_bbs.
        (remove_bbs): Don't call remove_bbs.
        (create_preheader): Use make_forwarder_block.
        (create_preheader): Use make_forwarder_block.
        (mfb_keep_just, mfb_update_loops): New static functions.
        (mfb_keep_just, mfb_update_loops): New static functions.
        * cfgrtl.c (cfg_layout_split_block, rtl_split_block,
        * cfgrtl.c (cfg_layout_split_block, rtl_split_block,
        rtl_make_forwarder_block, rtl_create_basic_block,
        rtl_make_forwarder_block, rtl_create_basic_block,
        rtl_delete_block, rtl_split_block, rtl_merge_blocks,
        rtl_delete_block, rtl_split_block, rtl_merge_blocks,
        tidy_fallthru_edge, rtl_split_edge, cfg_layout_merge_blocks,
        tidy_fallthru_edge, rtl_split_edge, cfg_layout_merge_blocks,
        cfg_layout_split_edge): Parts not specific to rtl moved to cfghooks.c
        cfg_layout_split_edge): Parts not specific to rtl moved to cfghooks.c
        (tidy_fallthru_edges): Moved to cfghooks.c.
        (tidy_fallthru_edges): Moved to cfghooks.c.
        (rtl_move_block_after): New.
        (rtl_move_block_after): New.
        (redirect_edge_with_latch_update, update_cfg_after_block_merging):
        (redirect_edge_with_latch_update, update_cfg_after_block_merging):
        Removed.
        Removed.
        (rtl_cfg_hooks, cfg_layout_rtl_cfg_hooks): Modified.
        (rtl_cfg_hooks, cfg_layout_rtl_cfg_hooks): Modified.
        * ifcvt.c (merge_if_block, find_cond_trap, find_if_case_1,
        * ifcvt.c (merge_if_block, find_cond_trap, find_if_case_1,
        find_if_case_2): Don't update dominators.
        find_if_case_2): Don't update dominators.
        * loop-init.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        * loop-init.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        Replaced by rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
        Replaced by rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
        * loop-unswitch.c (unswitch_loop): Don't call add_to_dominance_info.
        * loop-unswitch.c (unswitch_loop): Don't call add_to_dominance_info.
        * toplev.c (rest_of_handle_loop2): Enter cfglayout mode here.
        * toplev.c (rest_of_handle_loop2): Enter cfglayout mode here.
        * tree-cfg.c (create_bb): Modified to suit create_basic_block hook.
        * tree-cfg.c (create_bb): Modified to suit create_basic_block hook.
        (tree_redirect_edge_and_branch_1): Merged into
        (tree_redirect_edge_and_branch_1): Merged into
        tree_redirect_edge_and_branch.
        tree_redirect_edge_and_branch.
        (create_blocks_annotations): Removed.
        (create_blocks_annotations): Removed.
        (tree_loop_optimizer_init, tree_loop_optimizer_finalize): Removed.
        (tree_loop_optimizer_init, tree_loop_optimizer_finalize): Removed.
        (tree_make_forwarder_block, remove_bb, tree_split_edge,
        (tree_make_forwarder_block, remove_bb, tree_split_edge,
        tree_redirect_edge_and_branch, tree_split_block,
        tree_redirect_edge_and_branch, tree_split_block,
        tree_move_block_after): Partially moved to cfghooks.c.
        tree_move_block_after): Partially moved to cfghooks.c.
        (tree_duplicate_bb): New.
        (tree_duplicate_bb): New.
        (PENDING_STMT): Moved to tree-flow.h.
        (PENDING_STMT): Moved to tree-flow.h.
        (tree_register_cfg_hooks): Moved to cfghooks.c.
        (tree_register_cfg_hooks): Moved to cfghooks.c.
        (build_tree_cfg): Don't call create_blocks_annotations.
        (build_tree_cfg): Don't call create_blocks_annotations.
        (factor_computed_gotos, make_blocks): Use create_empty_bb.
        (factor_computed_gotos, make_blocks): Use create_empty_bb.
        (cleanup_tree_cfg): Use delete_unreachable_blocks.
        (cleanup_tree_cfg): Use delete_unreachable_blocks.
        (remove_unreachable_blocks, insert_bb_before): Removed.
        (remove_unreachable_blocks, insert_bb_before): Removed.
        (remove_phi_nodes_and_edges_for_unreachable_block): Modified.
        (remove_phi_nodes_and_edges_for_unreachable_block): Modified.
        (tree_find_edge_insert_loc, thread_jumps): Use cfg hooks.
        (tree_find_edge_insert_loc, thread_jumps): Use cfg hooks.
        (bsi_commit_edge_inserts): Update_annotations argument removed.
        (bsi_commit_edge_inserts): Update_annotations argument removed.
        (tree_cfg_hooks): Modified.
        (tree_cfg_hooks): Modified.
        * tree-flow.h (PENDING_STMT): Moved from tree-cfg.c.
        * tree-flow.h (PENDING_STMT): Moved from tree-cfg.c.
        (insert_bb_before, remove_unreachable_blocks,
        (insert_bb_before, remove_unreachable_blocks,
        remove_phi_nodes_and_edges_for_unreachable_block, tree_split_edge):
        remove_phi_nodes_and_edges_for_unreachable_block, tree_split_edge):
        Declaration removed.
        Declaration removed.
        (bsi_commit_edge_inserts): Declaration changed.
        (bsi_commit_edge_inserts): Declaration changed.
        (tree_duplicate_bb): Declare.
        (tree_duplicate_bb): Declare.
        * tree-sra.c (scalarize_structures): Changed due to
        * tree-sra.c (scalarize_structures): Changed due to
        bsi_commit_edge_inserts change.
        bsi_commit_edge_inserts change.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Use
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Use
        delete_unreachable_blocks.
        delete_unreachable_blocks.
        * tree-ssa-loop.c: Include cfgloop.h.
        * tree-ssa-loop.c: Include cfgloop.h.
        * tree-ssa-pre.c (split_critical_edges, tree_perform_ssapre): Use cfg
        * tree-ssa-pre.c (split_critical_edges, tree_perform_ssapre): Use cfg
        hooks.
        hooks.
        * tree-ssa.c (rewrite_trees, rewrite_vars_out_of_ssa): Changed due to
        * tree-ssa.c (rewrite_trees, rewrite_vars_out_of_ssa): Changed due to
        bsi_commit_edge_inserts change.
        bsi_commit_edge_inserts change.
        (ssa_redirect_edge): Record the phi arguments on the redirected edge.
        (ssa_redirect_edge): Record the phi arguments on the redirected edge.
        * tree-tailcall.c (eliminate_tail_call): Clean stored phi arguments.
        * tree-tailcall.c (eliminate_tail_call): Clean stored phi arguments.
2004-01-13  Richard Henderson  
2004-01-13  Richard Henderson  
        * gimplify.c (gimplify_lhs_complex_part_expr): Remove.
        * gimplify.c (gimplify_lhs_complex_part_expr): Remove.
        (gimplify_modify_expr): Don't call it.
        (gimplify_modify_expr): Don't call it.
        * tree-alias-common.c (HAVE_BANSHEE): Make sure it's defined.
        * tree-alias-common.c (HAVE_BANSHEE): Make sure it's defined.
        (pass_build_pta): Set name.
        (pass_build_pta): Set name.
2004-01-13  Zdenek Dvorak  
2004-01-13  Zdenek Dvorak  
        * tree-tailcall.c (eliminate_tail_call): Add phi nodes for the call
        * tree-tailcall.c (eliminate_tail_call): Add phi nodes for the call
        vdefs.
        vdefs.
        (find_tail_calls): Ignore returns with virtual operands.
        (find_tail_calls): Ignore returns with virtual operands.
2004-01-12  Richard Henderson  
2004-01-12  Richard Henderson  
        * tree-pass.h: New file.
        * tree-pass.h: New file.
        * gimple-low.c: Include tree-pass.h.
        * gimple-low.c: Include tree-pass.h.
        (lower_function_body): Make static, take no arguments.  Set
        (lower_function_body): Make static, take no arguments.  Set
        dont_emit_block_notes and call reset_block_changes here.
        dont_emit_block_notes and call reset_block_changes here.
        (pass_lower_cf): New.
        (pass_lower_cf): New.
        * toplev.c (general_init): Call init_tree_optimization_passes.
        * toplev.c (general_init): Call init_tree_optimization_passes.
        * toplev.h (init_tree_optimization_passes): Declare.
        * toplev.h (init_tree_optimization_passes): Declare.
        * tree-alias-ander.c: Include tree-pass.h.
        * tree-alias-ander.c: Include tree-pass.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (andersen_init): Don't dump_begin.
        (andersen_init): Don't dump_begin.
        (andersen_cleanup): Don't dump_end.
        (andersen_cleanup): Don't dump_end.
        * tree-alias-common.c: Include tree-pass.h, timevar.h.
        * tree-alias-common.c: Include tree-pass.h, timevar.h.
        (currptadecl): Remove.
        (currptadecl): Remove.
        (create_alias_vars): Make static, take no args.  Tidy ifdefs.
        (create_alias_vars): Make static, take no args.  Tidy ifdefs.
        (delete_alias_vars): Likewise.  Protect vs PTA_ANDERSEN.
        (delete_alias_vars): Likewise.  Protect vs PTA_ANDERSEN.
        (pass_build_pta, pass_del_pta): New.
        (pass_build_pta, pass_del_pta): New.
        * tree-alias-common.h (create_alias_vars): Delete decl.
        * tree-alias-common.h (create_alias_vars): Delete decl.
        (delete_alias_vars): Likewise.
        (delete_alias_vars): Likewise.
        * tree-cfg.c: Include tree-pass.h.
        * tree-cfg.c: Include tree-pass.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (build_tree_cfg): Don't timevar, do init_flow.  Ensure one bb.
        (build_tree_cfg): Don't timevar, do init_flow.  Ensure one bb.
        Don't dump the function here.
        Don't dump the function here.
        (execute_build_cfg, pass_build_cfg): New.
        (execute_build_cfg, pass_build_cfg): New.
        (remove_useless_stmts): Make static, take no arguments.
        (remove_useless_stmts): Make static, take no arguments.
        (pass_remove_useless_stmts): New.
        (pass_remove_useless_stmts): New.
        (remove_bb): Don't open the dump file.
        (remove_bb): Don't open the dump file.
        * tree-dfa.c: Include tree-pass.h.
        * tree-dfa.c: Include tree-pass.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (find_referenced_vars): Make static, take no args.  Do init_tree_ssa.
        (find_referenced_vars): Make static, take no args.  Do init_tree_ssa.
        (compute_may_aliases): Similarly.  Don't timevar or open dump file.
        (compute_may_aliases): Similarly.  Don't timevar or open dump file.
        Don't delete_alias_vars here.
        Don't delete_alias_vars here.
        (pass_referenced_vars, pass_may_alias): New.
        (pass_referenced_vars, pass_may_alias): New.
        * tree-dump.c (dump_files): Remove optimization dumps.
        * tree-dump.c (dump_files): Remove optimization dumps.
        (extra_dump_files, extra_dump_files_in_use): New.
        (extra_dump_files, extra_dump_files_in_use): New.
        (extra_dump_files_alloced): New.
        (extra_dump_files_alloced): New.
        (dump_register): New.
        (dump_register): New.
        (get_dump_file_info): New.
        (get_dump_file_info): New.
        (dump_begin, dump_enabled_p, dump_flag_name): Use it.
        (dump_begin, dump_enabled_p, dump_flag_name): Use it.
        (dump_enable_all): Handle extra_dump_files.
        (dump_enable_all): Handle extra_dump_files.
        (dump_switch_p_1): Split out from dump_switch_p.
        (dump_switch_p_1): Split out from dump_switch_p.
        (dump_switch_p): Handle extra_dump_files.
        (dump_switch_p): Handle extra_dump_files.
        * tree-dump.h (dump_register): Declare.
        * tree-dump.h (dump_register): Declare.
        * tree-eh.c: Include tree-pass.h
        * tree-eh.c: Include tree-pass.h
        (lower_eh_constructs): Make static, take no args.  Don't timevar,
        (lower_eh_constructs): Make static, take no args.  Don't timevar,
        don't dump function.
        don't dump function.
        (pass_lower_eh): New.
        (pass_lower_eh): New.
        * tree-flow.h (remove_useless_stmts, find_referenced_vars,
        * tree-flow.h (remove_useless_stmts, find_referenced_vars,
        compute_may_aliases, lower_function_body, rewrite_out_of_ssa,
        compute_may_aliases, lower_function_body, rewrite_out_of_ssa,
        tree_ssa_ccp, tree_ssa_dominator_optimize, tree_ssa_dce,
        tree_ssa_ccp, tree_ssa_dominator_optimize, tree_ssa_dce,
        tree_ssa_loop_opt, lower_eh_constructs, tree_sra): Remove.
        tree_ssa_loop_opt, lower_eh_constructs, tree_sra): Remove.
        (rewrite_into_ssa): Update decl.
        (rewrite_into_ssa): Update decl.
        * tree-mudflap.c: Include tree-pass.h.
        * tree-mudflap.c: Include tree-pass.h.
        (mudflap_function_decls): Make static, take no args, don't process
        (mudflap_function_decls): Make static, take no args, don't process
        functions with mf_marked_p.
        functions with mf_marked_p.
        (mudflap_function_ops): Likewise.
        (mudflap_function_ops): Likewise.
        (gate_mudflap, pass_mudflap_1, pass_mudflap_2): New.
        (gate_mudflap, pass_mudflap_1, pass_mudflap_2): New.
        (mudflap_enqueue_decl): Don't open dump file.
        (mudflap_enqueue_decl): Don't open dump file.
        (mudflap_enqueue_constant): Likewise.
        (mudflap_enqueue_constant): Likewise.
        * tree-nomudflap.c: Include tree-pass.h.
        * tree-nomudflap.c: Include tree-pass.h.
        (mudflap_c_function_decls, mudflap_c_function_ops): Remove.
        (mudflap_c_function_decls, mudflap_c_function_ops): Remove.
        (pass_mudflap_1, pass_mudflap_2): New.
        (pass_mudflap_1, pass_mudflap_2): New.
        * tree-optimize.c: Include tree-pass.h.
        * tree-optimize.c: Include tree-pass.h.
        (optimize_function_tree): Remove.
        (optimize_function_tree): Remove.
        (tree_dump_file, tree_dump_flags, vars_to_rename): New.
        (tree_dump_file, tree_dump_flags, vars_to_rename): New.
        (all_passes): New.
        (all_passes): New.
        (execute_gimple, pass_gimple): New.
        (execute_gimple, pass_gimple): New.
        (execute_rebuild_bind, pass_rebuild_bind): New.
        (execute_rebuild_bind, pass_rebuild_bind): New.
        (gate_all_optimizations, pass_all_optimizations): New.
        (gate_all_optimizations, pass_all_optimizations): New.
        (execute_del_cfg, pass_del_cfg): New.
        (execute_del_cfg, pass_del_cfg): New.
        (register_one_dump_file, register_dump_files): New.
        (register_one_dump_file, register_dump_files): New.
        (dup_pass_1, init_tree_optimization_passes): New.
        (dup_pass_1, init_tree_optimization_passes): New.
        (current_properties, last_verified): New.
        (current_properties, last_verified): New.
        (execute_todo, execute_one_pass, execute_pass_list): New.
        (execute_todo, execute_one_pass, execute_pass_list): New.
        (tree_rest_of_compilation): Remove -O0 passes.
        (tree_rest_of_compilation): Remove -O0 passes.
        * tree-sra.c: Include tree-pass.h, flags.h.
        * tree-sra.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (tree_sra): Make static, take no args.  Don't timevar or dump file.
        (tree_sra): Make static, take no args.  Don't timevar or dump file.
        (gate_sra, pass_sra): New.
        (gate_sra, pass_sra): New.
        * tree-ssa-ccp.c: Include tree-pass.h, flags.h.
        * tree-ssa-ccp.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags): New.
        (tree_dump_file, tree_dump_flags): New.
        (tree_ssa_ccp): Make static, take no args.  Don't timevar or dump file.
        (tree_ssa_ccp): Make static, take no args.  Don't timevar or dump file.
        (gate_ccp, pass_ccp): New.
        (gate_ccp, pass_ccp): New.
        (substitute_and_fold): Take no args.
        (substitute_and_fold): Take no args.
        * tree-ssa-dce.c: Include tree-pass.h, flags.h.
        * tree-ssa-dce.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags): New.
        (tree_dump_file, tree_dump_flags): New.
        (tree_ssa_dce): Make static, take no args.  Don't open dump file.
        (tree_ssa_dce): Make static, take no args.  Don't open dump file.
        (gate_dce, pass_dce): New.
        (gate_dce, pass_dce): New.
        * tree-ssa-dom.c: Include tree-pass.h, flags.h.
        * tree-ssa-dom.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (tree_ssa_dominator_optimize): Make static, take no args, don't
        (tree_ssa_dominator_optimize): Make static, take no args, don't
        timevar, don't dump file.
        timevar, don't dump file.
        (gate_dominator, pass_dominator): New.
        (gate_dominator, pass_dominator): New.
        * tree-ssa-loop.c: Include tree-pass.h, flags.h.
        * tree-ssa-loop.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_ssa_loop_opt): Make static, take no args, don't open dump file.
        (tree_ssa_loop_opt): Make static, take no args, don't open dump file.
        (gate_loop, pass_loop): New.
        (gate_loop, pass_loop): New.
        * tree-ssa-pre.c: Include tree-pass.h, flags.h.
        * tree-ssa-pre.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (execute_pre): Rename from tree_perform_ssapre, make static,
        (execute_pre): Rename from tree_perform_ssapre, make static,
        take no args, don't timevar, don't open dump file, don't allocate
        take no args, don't timevar, don't open dump file, don't allocate
        vars_to_rename.
        vars_to_rename.
        (gate_pre, pass_pre): New.
        (gate_pre, pass_pre): New.
        * tree-ssa.c: Include tree-pass.h.
        * tree-ssa.c: Include tree-pass.h.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
        (rewrite_into_ssa): Take no arguments, don't open dump file.
        (rewrite_into_ssa): Take no arguments, don't open dump file.
        (rewrite_out_of_ssa): Make static, take no args, don't timevar,
        (rewrite_out_of_ssa): Make static, take no args, don't timevar,
        don't open dump file.  Disable TER if mudflap.
        don't open dump file.  Disable TER if mudflap.
        (pass_build_ssa, pass_del_ssa): New.
        (pass_build_ssa, pass_del_ssa): New.
        * tree-tailcall.c: Include tree-pass.h, flags.h.
        * tree-tailcall.c: Include tree-pass.h, flags.h.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_dump_file, tree_dump_flags): Remove.
        (tree_optimize_tail_calls_1): Rename from tree_optimize_tail_calls.
        (tree_optimize_tail_calls_1): Rename from tree_optimize_tail_calls.
        Make static, take only opt_tailcalls, don't dump file.
        Make static, take only opt_tailcalls, don't dump file.
        (execute_tail_recursion, gate_tail_calls, execute_tail_calls): New.
        (execute_tail_recursion, gate_tail_calls, execute_tail_calls): New.
        (pass_tail_recursion, pass_tail_calls): New.
        (pass_tail_recursion, pass_tail_calls): New.
        * tree.h (enum tree_dump_index): Remove optimization dumps.
        * tree.h (enum tree_dump_index): Remove optimization dumps.
        * Makefile.in (tree-alias-ander.o, tree-alias-common.o, tree-ssa.o,
        * Makefile.in (tree-alias-ander.o, tree-alias-common.o, tree-ssa.o,
        tree-ssa-dom.o, tree-ssa-pre.o, tree-cfg.o, tree-tailcall.o,
        tree-ssa-dom.o, tree-ssa-pre.o, tree-cfg.o, tree-tailcall.o,
        tree-dfa.o, tree-eh.o, tree-ssa-loop.o, tree-optimize.o, gimple-low.o,
        tree-dfa.o, tree-eh.o, tree-ssa-loop.o, tree-optimize.o, gimple-low.o,
        tree-mudflap.o, tree-ssa-dce.o, tree-ssa-ccp.o, tree-sra.o: Update
        tree-mudflap.o, tree-ssa-dce.o, tree-ssa-ccp.o, tree-sra.o: Update
        dependencies.
        dependencies.
2004-01-12  Frank Ch. Eigler  
2004-01-12  Frank Ch. Eigler  
        * tree-mudflap.c (mf_xform_derefs): Restore instrumentation of
        * tree-mudflap.c (mf_xform_derefs): Restore instrumentation of
        RETURN_EXPRs.
        RETURN_EXPRs.
2004-01-11  Jan Hubicka  
2004-01-11  Jan Hubicka  
        * tree-cfg.c (remove_usless_stmts_cond):  Fold statement.
        * tree-cfg.c (remove_usless_stmts_cond):  Fold statement.
        (remove_useless_stmts_1):  Fold trees we know how to fold.
        (remove_useless_stmts_1):  Fold trees we know how to fold.
2004-01-09  Richard Henderson  
2004-01-09  Richard Henderson  
        * gimplify.c (gimplify_constructor): Merge into ...
        * gimplify.c (gimplify_constructor): Merge into ...
        (gimplify_init_constructor): ... here.  Handle COMPLEX_TYPE and
        (gimplify_init_constructor): ... here.  Handle COMPLEX_TYPE and
        VECTOR_TYPE.
        VECTOR_TYPE.
        (gimplify_lhs_complex_part_expr): New.
        (gimplify_lhs_complex_part_expr): New.
        (gimplify_modify_expr): Call it.
        (gimplify_modify_expr): Call it.
        * tree-simple.c (is_gimple_rhs): Accept COMPLEX_EXPR.
        * tree-simple.c (is_gimple_rhs): Accept COMPLEX_EXPR.
        * c-pretty-print.c (pp_c_initializer): Accept any type CONSTRUCTOR.
        * c-pretty-print.c (pp_c_initializer): Accept any type CONSTRUCTOR.
        (pp_c_initializer_list): Fix code expectations for VECTOR_TYPE and
        (pp_c_initializer_list): Fix code expectations for VECTOR_TYPE and
        COMPLEX_TYPE.
        COMPLEX_TYPE.
2004-01-09  Steven Bosscher  
2004-01-09  Steven Bosscher  
        PR optimization/13599
        PR optimization/13599
        * tree-cfg.c (remove_useless_stmts_cond): Clear last-goto
        * tree-cfg.c (remove_useless_stmts_cond): Clear last-goto
        before returning.
        before returning.
2004-01-09  Richard Henderson  
2004-01-09  Richard Henderson  
        * gimplify.c (gimplify_asm_expr): Fix ordering of ASM_INPUTS.
        * gimplify.c (gimplify_asm_expr): Fix ordering of ASM_INPUTS.
2004-01-09  Jan Hubicka  
2004-01-09  Jan Hubicka  
        * cgraph.h (cgraph_clone_inlined_nodes): Declare.
        * cgraph.h (cgraph_clone_inlined_nodes): Declare.
        * cgraphunit.c (cgrpah_clone_inlined_nodes): Make global.
        * cgraphunit.c (cgrpah_clone_inlined_nodes): Make global.
        (cgraph_mark_inline_edge): Sanity check that size is positive.
        (cgraph_mark_inline_edge): Sanity check that size is positive.
        (cgraph_decide_inlining): Fix typo.
        (cgraph_decide_inlining): Fix typo.
        * tree-optimize.c (tree_rest_of_compilation): Fix node duplication
        * tree-optimize.c (tree_rest_of_compilation): Fix node duplication
        code.
        code.
2004-01-09  Jan Hubicka  
2004-01-09  Jan Hubicka  
        * tree-inline.c (estimate_num_insns_1): Fix.
        * tree-inline.c (estimate_num_insns_1): Fix.
2004-01-09  Richard Henderson  
2004-01-09  Richard Henderson  
        * tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
        * tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
        tree-sra.c, tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-dom.c,
        tree-sra.c, tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-dom.c,
        tree-ssa-loop.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c: Rename
        tree-ssa-loop.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c: Rename
        dump_file and dump_flags to tree_dump_file/flags.
        dump_file and dump_flags to tree_dump_file/flags.
2004-01-08  Frank Ch. Eigler  
2004-01-08  Frank Ch. Eigler  
        * tree-mudflap.c (mf_build_string): Properly mf_mark string.
        * tree-mudflap.c (mf_build_string): Properly mf_mark string.
        (mf_varname_tree): Remove redundant marking.
        (mf_varname_tree): Remove redundant marking.
        * tree-optimize.c (tree_rest_of_compilation): Skip mudflap processing
        * tree-optimize.c (tree_rest_of_compilation): Skip mudflap processing
        of mf_marked functions.
        of mf_marked functions.
        * c-mudflap.c (mflang_flush_calls): mf_mark synthetic function.
        * c-mudflap.c (mflang_flush_calls): mf_mark synthetic function.
2004-01-07  Diego Novillo  
2004-01-07  Diego Novillo  
        * Makefile.in (OBJS-common): Remove tree-must-alias.o
        * Makefile.in (OBJS-common): Remove tree-must-alias.o
        (tree-must-alias.o): Remove.
        (tree-must-alias.o): Remove.
        * common.opt (ftree-must-alias): Remove.
        * common.opt (ftree-must-alias): Remove.
        * flags.h (flag_tree_must_alias): Remove.  Update all users.
        * flags.h (flag_tree_must_alias): Remove.  Update all users.
        * timevar.def (TV_TREE_MUST_ALIAS): Remove.
        * timevar.def (TV_TREE_MUST_ALIAS): Remove.
        * toplev.c (f_options): Remove entry for -ftree-must-alias.
        * toplev.c (f_options): Remove entry for -ftree-must-alias.
        * tree-alias-common.c (local_alias_vars): Add GTY marker.
        * tree-alias-common.c (local_alias_vars): Add GTY marker.
        (local_alias_varnums): Likewise.
        (local_alias_varnums): Likewise.
        * tree-dfa.c (aliases_computed_p): Declare.
        * tree-dfa.c (aliases_computed_p): Declare.
        (dump_variable): Show variable UID and dereferenced bits.
        (dump_variable): Show variable UID and dereferenced bits.
        (compute_may_aliases): Add arguments 'vars_to_rename' and 'phase'.
        (compute_may_aliases): Add arguments 'vars_to_rename' and 'phase'.
        Do not call create_alias_vars.
        Do not call create_alias_vars.
        Call promote_call_clobbered_vars
        Call promote_call_clobbered_vars
        Do debugging dumps.
        Do debugging dumps.
        Set 'aliases_computed_p' to true before returning.
        Set 'aliases_computed_p' to true before returning.
        (create_memory_tags): Call may_be_aliased.
        (create_memory_tags): Call may_be_aliased.
        Mark new memory tags for renaming.
        Mark new memory tags for renaming.
        (compute_alias_sets): Don't do debugging dumps.
        (compute_alias_sets): Don't do debugging dumps.
        (find_variable_in): Move from tree-must-alias.c
        (find_variable_in): Move from tree-must-alias.c
        (remove_element_from): Likewise.
        (remove_element_from): Likewise.
        (find_addressable_vars): Likewise
        (find_addressable_vars): Likewise
        (promote_call_clobbered_vars): New.
        (promote_call_clobbered_vars): New.
        (get_memory_tag_for): Mark the tag volatile if the pointed-to type
        (get_memory_tag_for): Mark the tag volatile if the pointed-to type
        is volatile.
        is volatile.
        * tree-dump.c (dump_files): Remove entry for tree-mustalias.
        * tree-dump.c (dump_files): Remove entry for tree-mustalias.
        Add entries for tree-ssa7, tree-dom3 and tree-dce3.
        Add entries for tree-ssa7, tree-dom3 and tree-dce3.
        * tree-flow-inline.h (may_be_aliased): New.
        * tree-flow-inline.h (may_be_aliased): New.
        * tree-flow.h (may_be_aliased): Declare.
        * tree-flow.h (may_be_aliased): Declare.
        (aliases_computed_p): Declare.
        (aliases_computed_p): Declare.
        (tree_compute_must_alias): Remove.
        (tree_compute_must_alias): Remove.
        * tree-must-alias.c: Remove.
        * tree-must-alias.c: Remove.
        * tree-optimize.c: Include tree-alias-common.h.
        * tree-optimize.c: Include tree-alias-common.h.
        (optimize_function_tree): Call create_alias_vars before going into
        (optimize_function_tree): Call create_alias_vars before going into
        SSA form.
        SSA form.
        Do not compute aliases until after the first DOM and DCE passes.
        Do not compute aliases until after the first DOM and DCE passes.
        Run DOM and DCE once more after computing may-aliases.
        Run DOM and DCE once more after computing may-aliases.
        * tree-ssa-dom.c (propagate_copy): Merge the dereferenced bit flags
        * tree-ssa-dom.c (propagate_copy): Merge the dereferenced bit flags
        when copy propagating pointers.
        when copy propagating pointers.
        * tree-ssa-operands.c (get_stmt_operands): Assume that the
        * tree-ssa-operands.c (get_stmt_operands): Assume that the
        statement has no volatile operands.
        statement has no volatile operands.
        (get_expr_operands): When processing an INDIRECT_REF expressions,
        (get_expr_operands): When processing an INDIRECT_REF expressions,
        mark the statement as having volatile operands if aliases have not
        mark the statement as having volatile operands if aliases have not
        been computed.
        been computed.
        (add_stmt_operand): If the variable may be aliased and aliasing has
        (add_stmt_operand): If the variable may be aliased and aliasing has
        not been computed yet, mark the statement as having volatile
        not been computed yet, mark the statement as having volatile
        operands.
        operands.
        * tree-ssa.c (init_tree_ssa): Set aliases_computed_p to false.
        * tree-ssa.c (init_tree_ssa): Set aliases_computed_p to false.
        (delete_tree_ssa): Likewise.
        (delete_tree_ssa): Likewise.
        * tree.h (tree_dump_index): Remove TDI_mustalias.
        * tree.h (tree_dump_index): Remove TDI_mustalias.
        Add TDI_dom_3, TDI_ssa_7 and TDI_dce_3.
        Add TDI_dom_3, TDI_ssa_7 and TDI_dce_3.
        * doc/invoke.texi: Remove must-alias documentation.
        * doc/invoke.texi: Remove must-alias documentation.
2004-01-07  Jeff Law  
2004-01-07  Jeff Law  
        * tree-ssa-dce.c (find_useful_stmts): Do not consider PHIs for
        * tree-ssa-dce.c (find_useful_stmts): Do not consider PHIs for
        virtual operands inherently necessary.
        virtual operands inherently necessary.
2004-01-07  Zdenek Dvorak  
2004-01-07  Zdenek Dvorak  
        * tree-dfa.c (free_df_for_stmt, free_df): New functions.
        * tree-dfa.c (free_df_for_stmt, free_df): New functions.
        (compute_immediate_uses_for_stmt): Record uses in VDEFs.
        (compute_immediate_uses_for_stmt): Record uses in VDEFs.
        * tree-flow.h (free_df, kill_redundant_phi_nodes): Declare.
        * tree-flow.h (free_df, kill_redundant_phi_nodes): Declare.
        * tree-optimize.c (optimize_function_tree): Call
        * tree-optimize.c (optimize_function_tree): Call
        kill_redundant_phi_nodes.
        kill_redundant_phi_nodes.
        * tree-ssa-ccp.c (finalize): Call free_df.
        * tree-ssa-ccp.c (finalize): Call free_df.
        * tree-ssa.c (replace_immediate_uses, raise_value,
        * tree-ssa.c (replace_immediate_uses, raise_value,
        kill_redundant_phi_nodes): New functions.
        kill_redundant_phi_nodes): New functions.
2004-01-06  Jeff Law  
2004-01-06  Jeff Law  
        * tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Kill.
        * tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Kill.
        * tree-cfg.c (make_exit_edges, is_ctrl_altering_stmt):  Use
        * tree-cfg.c (make_exit_edges, is_ctrl_altering_stmt):  Use
        current_function_has_nonlocal_label instead of
        current_function_has_nonlocal_label instead of
        FUNCTION_RECEIVES_NONLOCAL_GOTO.
        FUNCTION_RECEIVES_NONLOCAL_GOTO.
        * gimplify.c (gimplify_expr): Set has_nonlocal_label in the
        * gimplify.c (gimplify_expr): Set has_nonlocal_label in the
        appropriate function's struct function rather than setting
        appropriate function's struct function rather than setting
        a bit in the FUNCTION_DECL.
        a bit in the FUNCTION_DECL.
2004-01-06  Jan Hubicka  
2004-01-06  Jan Hubicka  
        * expr.c (string_constant): Recognize array_ref.
        * expr.c (string_constant): Recognize array_ref.
2004-01-06  Richard Henderson  
2004-01-06  Richard Henderson  
        * builtins.c (builtin_save_expr): New.
        * builtins.c (builtin_save_expr): New.
        (expand_builtin_mathfn, expand_builtin_mathfn_2,
        (expand_builtin_mathfn, expand_builtin_mathfn_2,
        expand_builtin_strcmp, expand_builtin_strncmp,
        expand_builtin_strcmp, expand_builtin_strncmp,
        expand_builtin_strcat, fold_builtin_cabs): Use it.
        expand_builtin_strcat, fold_builtin_cabs): Use it.
2004-01-06  Jan Hubicka  
2004-01-06  Jan Hubicka  
        * fold-const.c (fold): Do not rebuild comparison when nothing
        * fold-const.c (fold): Do not rebuild comparison when nothing
        changed.
        changed.
2004-01-05  Jan Hubicka  
2004-01-05  Jan Hubicka  
        * tree-ssa-ccp.c (ccp_fold_builtin): Return early for builtins
        * tree-ssa-ccp.c (ccp_fold_builtin): Return early for builtins
        taking no arugment.
        taking no arugment.
2004-01-05  Steven Bosscher  
2004-01-05  Steven Bosscher  
        * tree-ssa-dce.c: Clean up whitespace.
        * tree-ssa-dce.c: Clean up whitespace.
        * tree-cfg.c (tree_verify_flow_info): Fix complaint about
        * tree-cfg.c (tree_verify_flow_info): Fix complaint about
        missing or wrong labels in the targets of a conditional branch.
        missing or wrong labels in the targets of a conditional branch.
2004-01-05  Richard Henderson  
2004-01-05  Richard Henderson  
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Check
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Check
        for signed zeros before recording value.
        for signed zeros before recording value.
        * Makefile.in (tree-ssa-dom.o): Depend on real.h.
        * Makefile.in (tree-ssa-dom.o): Depend on real.h.
2004-01-05  Jeff Law  
2004-01-05  Jeff Law  
        * tree-ssa-dom.c (cprop_into_stmt): Remove hack which prevented
        * tree-ssa-dom.c (cprop_into_stmt): Remove hack which prevented
        copy propagation into statements with virtual operands, but no
        copy propagation into statements with virtual operands, but no
        real operands.
        real operands.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Correctly handle
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Correctly handle
        the case where an edge we wish to redirect is split by the out of SSA
        the case where an edge we wish to redirect is split by the out of SSA
        code.
        code.
2004-01-05  Richard Henderson  
2004-01-05  Richard Henderson  
        * c-tree.h (struct lang_type): Add enum_min, enum_max.
        * c-tree.h (struct lang_type): Add enum_min, enum_max.
        * c-decl.c (finish_enum): Set them.  Set TYPE_MIN/MAX_VALUE to
        * c-decl.c (finish_enum): Set them.  Set TYPE_MIN/MAX_VALUE to
        the limits of the compatible type, not to the enumerators.
        the limits of the compatible type, not to the enumerators.
        (check_bitfield_type_and_width): Use them.
        (check_bitfield_type_and_width): Use them.
        (finish_struct): Clear allocated struct lang_type.
        (finish_struct): Clear allocated struct lang_type.
        * gimplify.c (gimplify_switch_expr): Remove special handling of
        * gimplify.c (gimplify_switch_expr): Remove special handling of
        outer cast in a switch.
        outer cast in a switch.
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Likewise.
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Likewise.
2004-01-05  Daniel Berlin  
2004-01-05  Daniel Berlin  
        * tree-ssa-pre.c (added_phis): Removed.
        * tree-ssa-pre.c (added_phis): Removed.
        Remove gt-tree-ssa-pre.h.
        Remove gt-tree-ssa-pre.h.
        (process_left_occs_and_kills): ASM_EXPR's block load pre.
        (process_left_occs_and_kills): ASM_EXPR's block load pre.
        * Makefile.in (GTFILES): Don't process tree-ssa-pre.c.
        * Makefile.in (GTFILES): Don't process tree-ssa-pre.c.
        gt-tree-ssa-pre.h isn't a gtfile anymore.
        gt-tree-ssa-pre.h isn't a gtfile anymore.
2004-01-05  Andrew Pinski  
2004-01-05  Andrew Pinski  
        * config.gcc (powerpc-*-darwin*): Make libbanshee rebuild
        * config.gcc (powerpc-*-darwin*): Make libbanshee rebuild
        on PPC darwin.
        on PPC darwin.
2004-01-05  Richard Henderson  
2004-01-05  Richard Henderson  
        * gimplify.c (gimplify_expr): Move check for error_mark inside
        * gimplify.c (gimplify_expr): Move check for error_mark inside
        the main loop.
        the main loop.
2004-01-04  Jan Hubicka  
2004-01-04  Jan Hubicka  
        * Makefile.in (cgraph.o, cgraphunit.o): Add intl.h dependency.
        * Makefile.in (cgraph.o, cgraphunit.o): Add intl.h dependency.
        * cgraph.c (create_edge, dump_cgraph): Update to use inline_failed
        * cgraph.c (create_edge, dump_cgraph): Update to use inline_failed
        * cgraph.h (cgraph_edge): Replace inline_call by inline_failed
        * cgraph.h (cgraph_edge): Replace inline_call by inline_failed
        (cgraph_inline_p): Add extra argument reason.
        (cgraph_inline_p): Add extra argument reason.
        * cgraphunit.c: Minor formating fixes.
        * cgraphunit.c: Minor formating fixes.
        cgraph_first_inlined_callee): New functions.
        cgraph_first_inlined_callee): New functions.
        (record_call_1): Record builtins too.
        (record_call_1): Record builtins too.
        (cgraph_analyze_function): Update inline_failed messages.
        (cgraph_analyze_function): Update inline_failed messages.
        (cgraph_mark_functions_to_output, cgraph_expand_function, cgraph_inlined_into,
        (cgraph_mark_functions_to_output, cgraph_expand_function, cgraph_inlined_into,
        cgraph_inlined_callees, cgraph_estimate_growth): Update to use inline_failed.
        cgraph_inlined_callees, cgraph_estimate_growth): Update to use inline_failed.
        (cgraph_check_inline_limits): Likewise; Add argument reason.
        (cgraph_check_inline_limits): Likewise; Add argument reason.
        (cgraph_set_inline_failed): New static function.
        (cgraph_set_inline_failed): New static function.
        (cgraph_decide_inlining_of_small_function, cgraph_decide_inlining): Set
        (cgraph_decide_inlining_of_small_function, cgraph_decide_inlining): Set
        reasons.
        reasons.
        (cgraph_inline_p): Add new argument reason.
        (cgraph_inline_p): Add new argument reason.
        * tree-inline.c (expand_call_inline):  Update warning.
        * tree-inline.c (expand_call_inline):  Update warning.
2004-01-04  Andreas Jaeger  
2004-01-04  Andreas Jaeger  
        * common.opt: Re-order some options in ASCII collating orders.
        * common.opt: Re-order some options in ASCII collating orders.
2004-01-03  Richard Henderson  
2004-01-03  Richard Henderson  
        * toplev.c (rest_of_compilation): Fixup merge error wrt
        * toplev.c (rest_of_compilation): Fixup merge error wrt
        check_function_return_warnings.
        check_function_return_warnings.
        * tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Use unsigned_flag.
        * tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Use unsigned_flag.
2004-01-02  Jan Hubicka  
2004-01-02  Jan Hubicka  
        * c-decl.c (duplicate_decls):  Output DIE of extern inline function
        * c-decl.c (duplicate_decls):  Output DIE of extern inline function
        only when it can be inlined.
        only when it can be inlined.
        * c-objc-common.c (c_disregard_inline_limits):  When not inlining
        * c-objc-common.c (c_disregard_inline_limits):  When not inlining
        extern inline functions do not disregard.
        extern inline functions do not disregard.
        * cgraphunit.c (cgraph_analyze_function): When not inlining do not set
        * cgraphunit.c (cgraph_analyze_function): When not inlining do not set
        inline.
        inline.
        (cgraph_decide_inlining): Limit work done when not inlining.
        (cgraph_decide_inlining): Limit work done when not inlining.
        (cgrpah_decide_inlining_incrementally): Likewise.
        (cgrpah_decide_inlining_incrementally): Likewise.
        * tree-optimize.c (tree_rest_of_compilation): Do not call
        * tree-optimize.c (tree_rest_of_compilation): Do not call
        optimize_inline_calls
        optimize_inline_calls
        when there is nothing to inline.
        when there is nothing to inline.
2004-01-01  Richard Henderson  
2004-01-01  Richard Henderson  
        * c-common.c (c_expand_expr): Don't handle STMT_EXPR.
        * c-common.c (c_expand_expr): Don't handle STMT_EXPR.
        * c-objc-common.c (c_objc_common_finish_file): Use expand_expr.
        * c-objc-common.c (c_objc_common_finish_file): Use expand_expr.
        * c-semantics.c (lang_expand_stmt, lang_expand_decl_stmt,
        * c-semantics.c (lang_expand_stmt, lang_expand_decl_stmt,
        expand_cond, genrtl_do_pushlevel, genrtl_goto_stmt, genrtl_expr_stmt,
        expand_cond, genrtl_do_pushlevel, genrtl_goto_stmt, genrtl_expr_stmt,
        genrtl_expr_stmt_value, genrtl_decl_stmt, genrtl_if_stmt,
        genrtl_expr_stmt_value, genrtl_decl_stmt, genrtl_if_stmt,
        genrtl_while_stmt, genrtl_do_stmt_1, genrtl_do_stmt,
        genrtl_while_stmt, genrtl_do_stmt_1, genrtl_do_stmt,
        genrtl_return_stmt, genrtl_for_stmt, genrtl_break_stmt,
        genrtl_return_stmt, genrtl_for_stmt, genrtl_break_stmt,
        genrtl_continue_stmt, genrtl_scope_stmt, genrtl_switch_stmt,
        genrtl_continue_stmt, genrtl_scope_stmt, genrtl_switch_stmt,
        genrtl_case_label, genrtl_compound_stmt, genrtl_asm_stmt,
        genrtl_case_label, genrtl_compound_stmt, genrtl_asm_stmt,
        genrtl_cleanup_stmt, expand_stmt, find_reachable_label,
        genrtl_cleanup_stmt, expand_stmt, find_reachable_label,
        find_reachable_label_1, expand_unreachable_if_stmt,
        find_reachable_label_1, expand_unreachable_if_stmt,
        expand_unreachable_stmt): Remove.
        expand_unreachable_stmt): Remove.
        * c-common.h: Update.
        * c-common.h: Update.
2003-12-31  Richard Henderson  
2003-12-31  Richard Henderson  
        * c-mudflap.c (mflang_register_call): Remove.
        * c-mudflap.c (mflang_register_call): Remove.
        (mflang_flush_calls): Use start_function/finish_function.
        (mflang_flush_calls): Use start_function/finish_function.
        * tree-mudflap.c (mf_init_extern_trees): Tidy.
        * tree-mudflap.c (mf_init_extern_trees): Tidy.
        (mf_decl_cache_locals): Fix chaining for empty body.
        (mf_decl_cache_locals): Fix chaining for empty body.
        (deferred_static_decl_labels): Remove.
        (deferred_static_decl_labels): Remove.
        (deferred_static_decls_init): Remove.
        (deferred_static_decls_init): Remove.
        (mudflap_register_call): New.
        (mudflap_register_call): New.
        (mudflap_enqueue_decl): Use it.  Remove label argument.
        (mudflap_enqueue_decl): Use it.  Remove label argument.
        (mudflap_enqueue_constant): Likewise.
        (mudflap_enqueue_constant): Likewise.
        (mudflap_finish_file): Update to match.
        (mudflap_finish_file): Update to match.
        * tree-mudflap.h (mudflap_enqueue_decl): Remove label argument.
        * tree-mudflap.h (mudflap_enqueue_decl): Remove label argument.
        (mudflap_enqueue_constant): Likewise.
        (mudflap_enqueue_constant): Likewise.
        (mflang_register_call): Remove.
        (mflang_register_call): Remove.
        * tree-nomudflap.c (mudflap_enqueue_decl): Remove label argument.
        * tree-nomudflap.c (mudflap_enqueue_decl): Remove label argument.
        (mudflap_enqueue_constant): Likewise.
        (mudflap_enqueue_constant): Likewise.
        * tree-optimize.c (tree_ssa_finish): Don't create NULL bodies.
        * tree-optimize.c (tree_ssa_finish): Don't create NULL bodies.
        * varasm.c (make_decl_rtl): Update mudflap_enqueue_decl call.
        * varasm.c (make_decl_rtl): Update mudflap_enqueue_decl call.
        (output_constant_def_contents): Similarly for mudflap_enqueue_constant.
        (output_constant_def_contents): Similarly for mudflap_enqueue_constant.
2003-12-26  Sebastian Pop  
2003-12-26  Sebastian Pop  
        * tree-cfg.c (print_loop, print_pred_bbs, print_succ_bbs,
        * tree-cfg.c (print_loop, print_pred_bbs, print_succ_bbs,
        debug_loop_ir, print_loop_ir): New.
        debug_loop_ir, print_loop_ir): New.
        * tree-flow.h (debug_loop_ir, print_loop_ir): Declare.
        * tree-flow.h (debug_loop_ir, print_loop_ir): Declare.
2003-12-23  Jeff Law  
2003-12-23  Jeff Law  
        * tree-cfg.c (tree_find_edge_insert_loc): Do not use the target
        * tree-cfg.c (tree_find_edge_insert_loc): Do not use the target
        block as an insertion location if the target block has PHI nodes.
        block as an insertion location if the target block has PHI nodes.
2003-12-23  Jan Hubicka  
2003-12-23  Jan Hubicka  
        * cgraphunit.c (cgraph_mark_inline): Accept argument edge; return
        * cgraphunit.c (cgraph_mark_inline): Accept argument edge; return
        next edge not redirected.
        next edge not redirected.
        (cgraph_recursive_inlining_p): Simplify.
        (cgraph_recursive_inlining_p): Simplify.
        (cgraph_decide_inlining*): Update calls of cgraph_mark_inline.
        (cgraph_decide_inlining*): Update calls of cgraph_mark_inline.
2003-12-22  Toon Moene  
2003-12-22  Toon Moene  
        * tree-alias-common.c (find_func_aliases): Do not call
        * tree-alias-common.c (find_func_aliases): Do not call
        intra_function_call for languages assuring no aliasing between
        intra_function_call for languages assuring no aliasing between
        arguments (by themselves) and global memory.
        arguments (by themselves) and global memory.
2003-12-21  Jan Hubicka  
2003-12-21  Jan Hubicka  
        * tree-ssa-ccp.c (fold_stmt): Return when there is no RHS
        * tree-ssa-ccp.c (fold_stmt): Return when there is no RHS
        (get_rhs): Return for RETURN_EXPR with no operand.
        (get_rhs): Return for RETURN_EXPR with no operand.
2003-12-21  Zdenek Dvorak  
2003-12-21  Zdenek Dvorak  
        * tree-cfg.c (tree_make_forwarder_block): Use split_block.
        * tree-cfg.c (tree_make_forwarder_block): Use split_block.
        (tree_split_block): New.
        (tree_split_block): New.
        (tree_cfg_hooks): Add tree_split_block.
        (tree_cfg_hooks): Add tree_split_block.
        (tree_loop_optimizer_init):  Enable force_single_succ_latches.
        (tree_loop_optimizer_init):  Enable force_single_succ_latches.
        * cfgloopmanip.c (loop_split_edge_with): Don't update dominators.
        * cfgloopmanip.c (loop_split_edge_with): Don't update dominators.
        * cfgrtl.c (rtl_split_edge, cfg_layout_split_edge): Update dominators.
        * cfgrtl.c (rtl_split_edge, cfg_layout_split_edge): Update dominators.
2003-12-19  Daniel Berlin  
2003-12-19  Daniel Berlin  
        * tree-dfa.c (alias_stats_d): New structure.
        * tree-dfa.c (alias_stats_d): New structure.
        (alias_stats): New variable.
        (alias_stats): New variable.
        (create_memory_tags): Zero out alias_stats.
        (create_memory_tags): Zero out alias_stats.
        (dump_alias_stats): New function.
        (dump_alias_stats): New function.
        (compute_alias_sets): Call it if TDF_STATS is set.
        (compute_alias_sets): Call it if TDF_STATS is set.
        (may_alias_p): Collect the various statistics.
        (may_alias_p): Collect the various statistics.
2003-12-19  Diego Novillo  
2003-12-19  Diego Novillo  
        * gimple-low.c (expand_var_p): Always expand volatiles.
        * gimple-low.c (expand_var_p): Always expand volatiles.
        * tree-dfa.c (find_referenced_vars): Move up in the file.
        * tree-dfa.c (find_referenced_vars): Move up in the file.
        (create_memory_tags): New local function.
        (create_memory_tags): New local function.
        (compute_may_aliases): Call it.
        (compute_may_aliases): Call it.
        (add_referenced_var): Move code to create memory tags and create
        (add_referenced_var): Move code to create memory tags and create
        aliasing arrays to create_memory_tags.
        aliasing arrays to create_memory_tags.
        (get_memory_tag_for): Don't mark memory tags volatile.  Mark them
        (get_memory_tag_for): Don't mark memory tags volatile.  Mark them
        addressable.
        addressable.
        * tree-flow.h (var_ann_d): Add bitfields is_dereferenced_store and
        * tree-flow.h (var_ann_d): Add bitfields is_dereferenced_store and
        is_dereferenced_load.
        is_dereferenced_load.
        (add_call_clobbered_var): Remove.
        (add_call_clobbered_var): Remove.
        * tree-ssa-operands.c (check_optype_freelist): Mark arguments
        * tree-ssa-operands.c (check_optype_freelist): Mark arguments
        unused.
        unused.
        (add_optype_freelist): Likewise.
        (add_optype_freelist): Likewise.
        (add_stmt_operand): Don't add operands for volatile variables.
        (add_stmt_operand): Don't add operands for volatile variables.
2003-12-19  Kazu Hirata  
2003-12-19  Kazu Hirata  
        * dominance.c: Fix comment typos.
        * dominance.c: Fix comment typos.
        * et-forest.c: Likewise.
        * et-forest.c: Likewise.
        * et-forest.h: Likewise.
        * et-forest.h: Likewise.
        * tree-cfg.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-eh.c: Likewise.
        * tree-eh.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-tailcall.c: Likewise.
        * tree-tailcall.c: Likewise.
        * tree.def: Likewise.
        * tree.def: Likewise.
        * tree.h: Likewise.
        * tree.h: Likewise.
2003-12-18  Jason Merrill  
2003-12-18  Jason Merrill  
        PR c++/12453
        PR c++/12453
        * c-simplify.c (stmt_expr_last_stmt): Split out from...
        * c-simplify.c (stmt_expr_last_stmt): Split out from...
        (gimplify_stmt_expr): Here.
        (gimplify_stmt_expr): Here.
        * c-common.h: Declare it.
        * c-common.h: Declare it.
2003-12-18  Zdenek Dvorak  
2003-12-18  Zdenek Dvorak  
        * et-forest.h (et_forest_create, et_forest_delete,
        * et-forest.h (et_forest_create, et_forest_delete,
        et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
        et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
        et_forest_remove_edge, et_forest_parent,
        et_forest_remove_edge, et_forest_parent,
        et_forest_common_ancestor, et_forest_node_value,
        et_forest_common_ancestor, et_forest_node_value,
        et_forest_enumerate_sons): Declarations removed.
        et_forest_enumerate_sons): Declarations removed.
        (struct et_node): New.
        (struct et_node): New.
        (et_new_tree, et_free_tree, et_set_father, et_split, et_nca,
        (et_new_tree, et_free_tree, et_set_father, et_split, et_nca,
        et_below): Declare.
        et_below): Declare.
        * et-forest.c (struct et_forest_occurrence, struct et_forest,
        * et-forest.c (struct et_forest_occurrence, struct et_forest,
        struct et_forest_node): Removed.
        struct et_forest_node): Removed.
        (et_forest_create, et_forest_delete,
        (et_forest_create, et_forest_delete,
        et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
        et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
        et_forest_remove_edge, et_forest_parent,
        et_forest_remove_edge, et_forest_parent,
        et_forest_common_ancestor, et_forest_node_value,
        et_forest_common_ancestor, et_forest_node_value,
        et_forest_enumerate_sons, splay, remove_all_occurrences,
        et_forest_enumerate_sons, splay, remove_all_occurrences,
        find_leftmost_node, find_rightmost_node, calculate_value): Removed.
        find_leftmost_node, find_rightmost_node, calculate_value): Removed.
        (struct et_occ): New.
        (struct et_occ): New.
        (et_nodes, et_occurences): New.
        (et_nodes, et_occurences): New.
        (set_depth, set_depth_add, set_prev, set_next, et_recomp_min,
        (set_depth, set_depth_add, set_prev, set_next, et_recomp_min,
        et_check_occ_sanity, et_check_sanity, et_check_tree_sanity,
        et_check_occ_sanity, et_check_sanity, et_check_tree_sanity,
        record_path_before_1, record_path_before, check_path_after_1,
        record_path_before_1, record_path_before, check_path_after_1,
        check_path_after, et_splay, et_new_occ, et_new_tree,
        check_path_after, et_splay, et_new_occ, et_new_tree,
        et_free_tree, et_set_father, et_split, et_nca, et_below): New.
        et_free_tree, et_set_father, et_split, et_nca, et_below): New.
        * basic-block.h (struct basic_block_def): New field dom.
        * basic-block.h (struct basic_block_def): New field dom.
        (struct dominance_info): Type removed.
        (struct dominance_info): Type removed.
        (calculate_dominance_info, free_dominance_info,
        (calculate_dominance_info, free_dominance_info,
        nearest_common_dominator, set_immediate_dominator,
        nearest_common_dominator, set_immediate_dominator,
        get_immediate_dominator, dominated_by_p, get_dominated_by,
        get_immediate_dominator, dominated_by_p, get_dominated_by,
        add_to_dominance_info, delete_from_dominance_info,
        add_to_dominance_info, delete_from_dominance_info,
        recount_dominator, redirect_immediate_dominators,
        recount_dominator, redirect_immediate_dominators,
        iterate_fix_dominators, verify_dominators): Declarations
        iterate_fix_dominators, verify_dominators): Declarations
        changed.
        changed.
        (enum dom_state): New.
        (enum dom_state): New.
        (dom_computed): New variable.
        (dom_computed): New variable.
        (first_dom_son, next_dom_son): Declare.
        (first_dom_son, next_dom_son): Declare.
        * dominance.c (struct dominance_info): Removed.
        * dominance.c (struct dominance_info): Removed.
        (BB_NODE, SET_BB_NODE): Removed.
        (BB_NODE, SET_BB_NODE): Removed.
        (calculate_dominance_info, free_dominance_info,
        (calculate_dominance_info, free_dominance_info,
        nearest_common_dominator, set_immediate_dominator,
        nearest_common_dominator, set_immediate_dominator,
        get_immediate_dominator, dominated_by_p, get_dominated_by,
        get_immediate_dominator, dominated_by_p, get_dominated_by,
        add_to_dominance_info, delete_from_dominance_info,
        add_to_dominance_info, delete_from_dominance_info,
        recount_dominator, redirect_immediate_dominators,
        recount_dominator, redirect_immediate_dominators,
        iterate_fix_dominators, verify_dominators,
        iterate_fix_dominators, verify_dominators,
        debug_dominance_info): Work over new datastructure.  Access
        debug_dominance_info): Work over new datastructure.  Access
        dominance datastructures through CFG.
        dominance datastructures through CFG.
        (assign_dfs_numbers, compute_dom_fast_query, first_dom_son,
        (assign_dfs_numbers, compute_dom_fast_query, first_dom_son,
        next_dom_son): New.
        next_dom_son): New.
        * tree-cfg.c (pdom_info): Variable removed.
        * tree-cfg.c (pdom_info): Variable removed.
        (create_bb): Add the block to the dominance information.
        (create_bb): Add the block to the dominance information.
        (cleanup_tree_cfg): Let updating of the dominance on the
        (cleanup_tree_cfg): Let updating of the dominance on the
        individual passes.
        individual passes.
        (remove_bb): Don't handle pdom.
        (remove_bb): Don't handle pdom.
        (cleanup_control_expr_graph, tree_make_forwarder_block,
        (cleanup_control_expr_graph, tree_make_forwarder_block,
        thread_jumps): Invalidate the dominators.
        thread_jumps): Invalidate the dominators.
        (tree_split_edge): Update the dominators.
        (tree_split_edge): Update the dominators.
        (compute_dominance_frontiers_1, compute_dominance_frontiers,
        (compute_dominance_frontiers_1, compute_dominance_frontiers,
        tree_verify_flow_info, tree_loop_optimizer_init): Use the new
        tree_verify_flow_info, tree_loop_optimizer_init): Use the new
        interface to dominators.
        interface to dominators.
        * domwalk.c (walk_dominator_tree): Do not use dom_children.
        * domwalk.c (walk_dominator_tree): Do not use dom_children.
        * tree-flow-inline.h (add_dom_child, remove_dom_child,
        * tree-flow-inline.h (add_dom_child, remove_dom_child,
        clear_dom_children, dom_children): Removed.
        clear_dom_children, dom_children): Removed.
        * tree-flow.h (struct bb_ann_d): Dom_children field removed.
        * tree-flow.h (struct bb_ann_d): Dom_children field removed.
        (add_dom_child, dom_children, build_dominator_tree): Declaration
        (add_dom_child, dom_children, build_dominator_tree): Declaration
        removed.
        removed.
        (compute_dominance_frontiers): Declaration changed.
        (compute_dominance_frontiers): Declaration changed.
        * tree-optimize.c (optimize_function_tree): Free dominance
        * tree-optimize.c (optimize_function_tree): Free dominance
        information in the end.
        information in the end.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize,
        * tree-ssa-dom.c (tree_ssa_dominator_optimize,
        dom_opt_finalize_block): Do not use dom_children.
        dom_opt_finalize_block): Do not use dom_children.
        * tree-ssa-pre.c (fast_a_dominates_b, build_dfs_id_array_1,
        * tree-ssa-pre.c (fast_a_dominates_b, build_dfs_id_array_1,
        build_dfs_id_array): Removed.
        build_dfs_id_array): Removed.
        (pre_idom, dfs_id, dfs_id_last): Variables removed.
        (pre_idom, dfs_id, dfs_id_last): Variables removed.
        (build_dfn_array): Do not use dom_children.
        (build_dfn_array): Do not use dom_children.
        (eref_compare, load_modified_phi_result, rename_1, reaching_def,
        (eref_compare, load_modified_phi_result, rename_1, reaching_def,
        finalize_1, collect_expressions, tree_perform_ssapre): Use the
        finalize_1, collect_expressions, tree_perform_ssapre): Use the
        new interface to the dominance information.
        new interface to the dominance information.
        * tree-ssa.c (struct mark_def_sites_global_data): Idom field
        * tree-ssa.c (struct mark_def_sites_global_data): Idom field
        removed.
        removed.
        (set_livein_block, verify_use, verify_phi_args,
        (set_livein_block, verify_use, verify_phi_args,
        rewrite_into_ssa, mark_def_sites, verify_ssa): Use the new
        rewrite_into_ssa, mark_def_sites, verify_ssa): Use the new
        interface to the dominance information.
        interface to the dominance information.
        (build_dominator_tree): Removed.
        (build_dominator_tree): Removed.
        * tree-tailcall.c (tree_optimize_tail_calls): Invalidate
        * tree-tailcall.c (tree_optimize_tail_calls): Invalidate
        dominance information.
        dominance information.
        * bt-load.c (dom): Variable removed.
        * bt-load.c (dom): Variable removed.
        (augment_live_range, combine_btr_defs, migrate_btr_def,
        (augment_live_range, combine_btr_defs, migrate_btr_def,
        migrate_btr_defs, branch_target_load_optimize): Updated for the
        migrate_btr_defs, branch_target_load_optimize): Updated for the
        new interface for dominance information.
        new interface for dominance information.
        * cfglayout.c (copy_bbs): Removed loops argument. Updated for
        * cfglayout.c (copy_bbs): Removed loops argument. Updated for
        the new interface for dominance information.
        the new interface for dominance information.
        * cfglayout.h (copy_bbs): Declaration changed.
        * cfglayout.h (copy_bbs): Declaration changed.
        * cfgloop.c (flow_loop_pre_header_find, flow_loops_cfg_dump,
        * cfgloop.c (flow_loop_pre_header_find, flow_loops_cfg_dump,
        flow_loop_scan, canonicalize_loop_headers, flow_loops_find): Updated
        flow_loop_scan, canonicalize_loop_headers, flow_loops_find): Updated
        for the new interface for dominance information.
        for the new interface for dominance information.
        (flow_loop_scan): Loops argument removed.
        (flow_loop_scan): Loops argument removed.
        (flow_loops_free): Don't release dominators.
        (flow_loops_free): Don't release dominators.
        * cfgloop.h (struct cfg): Dom field removed.
        * cfgloop.h (struct cfg): Dom field removed.
        (flow_loop_scan, loop_split_edge_with, simple_loop_p,
        (flow_loop_scan, loop_split_edge_with, simple_loop_p,
        just_once_each_iteration_p, split_loop_bb): Declaration changed.
        just_once_each_iteration_p, split_loop_bb): Declaration changed.
        * cfgloopanal.c (simple_loop_exit_p, simple_increment,
        * cfgloopanal.c (simple_loop_exit_p, simple_increment,
        just_once_each_iteration_p, simple_loop_p): Remove loops argument.
        just_once_each_iteration_p, simple_loop_p): Remove loops argument.
        Updated for the new interface for dominance information.
        Updated for the new interface for dominance information.
        * cfgloopmanip.c (remove_bbs, find_path, create_preheader,
        * cfgloopmanip.c (remove_bbs, find_path, create_preheader,
        split_loop_bb, loopify, duplicate_loop_to_header_edge,
        split_loop_bb, loopify, duplicate_loop_to_header_edge,
        force_single_succ_latches, loop_split_edge_with): Ditto.
        force_single_succ_latches, loop_split_edge_with): Ditto.
        (create_loop_notes): Free the dominators.
        (create_loop_notes): Free the dominators.
        * gcse.c (dominators): Variable removed.
        * gcse.c (dominators): Variable removed.
        (free_code_hoist_mem, compute_code_hoist_data, hoist_code):
        (free_code_hoist_mem, compute_code_hoist_data, hoist_code):
        Updated for the new interface for dominance information.
        Updated for the new interface for dominance information.
        * ifcvt.c (post_dominators): Variable removed.
        * ifcvt.c (post_dominators): Variable removed.
        (mark_loop_exit_edges, merge_if_block, find_if_header,
        (mark_loop_exit_edges, merge_if_block, find_if_header,
        find_cond_trap, find_if_case_1, find_if_case_2, if_convert):
        find_cond_trap, find_if_case_1, find_if_case_2, if_convert):
        Updated for the new interface for dominance information.
        Updated for the new interface for dominance information.
        * loop-init.c (rtl_loop_optimizer_init,
        * loop-init.c (rtl_loop_optimizer_init,
        rtl_loop_optimizer_finalize): Ditto.
        rtl_loop_optimizer_finalize): Ditto.
        * loop-unroll.c (decide_peel_simple, decide_peel_once_rolling,
        * loop-unroll.c (decide_peel_simple, decide_peel_once_rolling,
        decide_peel_completely, decide_unroll_stupid,
        decide_peel_completely, decide_unroll_stupid,
        decide_unroll_constant_iterations,
        decide_unroll_constant_iterations,
        decide_unroll_runtime_iterations): Loops argument removed.
        decide_unroll_runtime_iterations): Loops argument removed.
        Updated for the new interface for dominance information.
        Updated for the new interface for dominance information.
        (unroll_and_peel_loops, peel_loops_completely,
        (unroll_and_peel_loops, peel_loops_completely,
        unroll_loop_runtime_iterations): Updated for the new interface for
        unroll_loop_runtime_iterations): Updated for the new interface for
        dominance information.
        dominance information.
        * loop-unswitch.c (may_unswitch_on_p, unswitch_loops,
        * loop-unswitch.c (may_unswitch_on_p, unswitch_loops,
        unswitch_single_loop, unswitch_loop): Updated for the new
        unswitch_single_loop, unswitch_loop): Updated for the new
        interface for dominance information.
        interface for dominance information.
        * predict.c (process_note_predictions, process_note_prediction,
        * predict.c (process_note_predictions, process_note_prediction,
        estimate_probability, note_prediction_to_br_prob): Ditto.
        estimate_probability, note_prediction_to_br_prob): Ditto.
        * sched-rgn.c (find_rgns, init_regions): Ditto.
        * sched-rgn.c (find_rgns, init_regions): Ditto.
        * toplev.c (rest_of_handle_branch_prob): Free the dominators.
        * toplev.c (rest_of_handle_branch_prob): Free the dominators.
2003-12-18  Jeff Law  
2003-12-18  Jeff Law  
        * tree-ssa-dom.c (edges_to_redirect, redirection_targets): Merged
        * tree-ssa-dom.c (edges_to_redirect, redirection_targets): Merged
        into a single varray "redirection_edges".
        into a single varray "redirection_edges".
        (tree_ssa_dominator_optimize): Twiddle initialization, finalization
        (tree_ssa_dominator_optimize): Twiddle initialization, finalization
        and accessors to redirection information based on combining varrays.
        and accessors to redirection information based on combining varrays.
        Get the threading destination from the saved edge rather than from a
        Get the threading destination from the saved edge rather than from a
        saved block.  Mark variables appearing in PHIs at the jump thread
        saved block.  Mark variables appearing in PHIs at the jump thread
        destination to be taken out of SSA form.
        destination to be taken out of SSA form.
        (thread_across_edge): Save the edge into the destination block
        (thread_across_edge): Save the edge into the destination block
        rather than the destination block itself.  Twiddle based on
        rather than the destination block itself.  Twiddle based on
        combining varrays of jump threading information.
        combining varrays of jump threading information.
        * tree-flow.h (tree_block_forwards_to): Returns an edge rather than
        * tree-flow.h (tree_block_forwards_to): Returns an edge rather than
        a block.
        a block.
        * tree-cfg.c (tree_block_forwards_to): Return the edge leading to
        * tree-cfg.c (tree_block_forwards_to): Return the edge leading to
        the target block rather than the target block itself.
        the target block rather than the target block itself.
2003-12-18  Daniel Berlin  
2003-12-18  Daniel Berlin  
        * tree-dfa.c (get_memory_tag_for): Don't put things with different
        * tree-dfa.c (get_memory_tag_for): Don't put things with different
        points-to sets in the same memory tag.
        points-to sets in the same memory tag.
2003-12-18  Jan Hubicka  
2003-12-18  Jan Hubicka  
        * c-common.c (handle_nonnull_attribute, check_function_nonnull):
        * c-common.c (handle_nonnull_attribute, check_function_nonnull):
        Initialize arg_num.
        Initialize arg_num.
        * c-format.c (handle_format_attribute): Initialize format_num.
        * c-format.c (handle_format_attribute): Initialize format_num.
        * rtlanal.c (get_related_value): Initialize get_jump_table_offset
        * rtlanal.c (get_related_value): Initialize get_jump_table_offset
2003-12-18  Zdenek Dvorak  
2003-12-18  Zdenek Dvorak  
        * stmt.c (expand_start_loop, expand_loop_continue_here,
        * stmt.c (expand_start_loop, expand_loop_continue_here,
        expand_end_loop): Don't create loop notes.
        expand_end_loop): Don't create loop notes.
2003-12-18  Zdenek Dvorak  
2003-12-18  Zdenek Dvorak  
            Jeff Law  
            Jeff Law  
        * tree-cfg.c (tree_node_shared_p): Explicitly allow sharing of
        * tree-cfg.c (tree_node_shared_p): Explicitly allow sharing of
        CST nodes.
        CST nodes.
        * tree-simple.c (is_gimple_rhs): Allow CST nodes.
        * tree-simple.c (is_gimple_rhs): Allow CST nodes.
        (is_gimple_min_invariant): Reject constants with TREE_OVERFLOW set.
        (is_gimple_min_invariant): Reject constants with TREE_OVERFLOW set.
        * tree-ssa-ccp (visit_assignment): Test is_gimple_min_invariant
        * tree-ssa-ccp (visit_assignment): Test is_gimple_min_invariant
        after munging bitfields.
        after munging bitfields.
        * tree-ssa-dom.c (record_equivalences_from_stmt): Similarly.
        * tree-ssa-dom.c (record_equivalences_from_stmt): Similarly.
2003-12-17  Jan Hubicka  
2003-12-17  Jan Hubicka  
        Based on patch by Dale Johannesen
        Based on patch by Dale Johannesen
        * expr.c (MOVE_RATIO, CLEAR_RATIO): Move to ...
        * expr.c (MOVE_RATIO, CLEAR_RATIO): Move to ...
        * expr.h (MOVE_RATIO, CLEAR_RATIO): ... here
        * expr.h (MOVE_RATIO, CLEAR_RATIO): ... here
2003-12-17  Jan Hubicka  
2003-12-17  Jan Hubicka  
        * Makefile.in (sibcall.o): Kill.
        * Makefile.in (sibcall.o): Kill.
        (tree-tailcall.o): Add except.h dependency
        (tree-tailcall.o): Add except.h dependency
        * sibcall.c: Kill.
        * sibcall.c: Kill.
        (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
        (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
        * calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
        * calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
        (expand_call): Do not produce placeholders; do not deal with tail
        (expand_call): Do not produce placeholders; do not deal with tail
        recursion; set tail_call_emit.
        recursion; set tail_call_emit.
        (fixup_tail_calls): New.
        (fixup_tail_calls): New.
        * expr.h (fixup_tail_calls): Declare.
        * expr.h (fixup_tail_calls): Declare.
        * toplev.c (rest_of_handle_sibling_calls): Kill.
        * toplev.c (rest_of_handle_sibling_calls): Kill.
        (rest_of_compialtion): Do not use rest_of_handle_sibling_calls;
        (rest_of_compialtion): Do not use rest_of_handle_sibling_calls;
        call fixup_tail_calls.
        call fixup_tail_calls.
        * tree-dump.c (dump_files): Add tail2
        * tree-dump.c (dump_files): Add tail2
        * tree-flow.h (tree_optimize_tail_calls): Update prototype.
        * tree-flow.h (tree_optimize_tail_calls): Update prototype.
        * tree-optimize.c (optimize_function_tree): Do tail optimization twice.
        * tree-optimize.c (optimize_function_tree): Do tail optimization twice.
        * tree-tailcall.c: Inlucde except.h
        * tree-tailcall.c: Inlucde except.h
        (suitable_for_tail_call_opt_p): New.
        (suitable_for_tail_call_opt_p): New.
        (optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
        (optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
        (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
        (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
        * tree.h (CALL_EXPR_TAILCALL): New.
        * tree.h (CALL_EXPR_TAILCALL): New.
        (tree_dump_index): Add tail2
        (tree_dump_index): Add tail2
        * function.h (struct function): Add tail_call_emit field.
        * function.h (struct function): Add tail_call_emit field.
2003-12-17  Jan Hubicka  
2003-12-17  Jan Hubicka  
        * tree-inline.c (estimate_num_insns_1):  Check that all nodes are
        * tree-inline.c (estimate_num_insns_1):  Check that all nodes are
        known; add missing nodes; fix MODIFY_EXPR
        known; add missing nodes; fix MODIFY_EXPR
2003-12-16  Jason Merrill  
2003-12-16  Jason Merrill  
        PR middle-end/12920
        PR middle-end/12920
        * stor-layout.c (layout_type): Just return if type is
        * stor-layout.c (layout_type): Just return if type is
        error_mark_node.
        error_mark_node.
        * c-decl.c (grokdeclarator): Immediately layout an
        * c-decl.c (grokdeclarator): Immediately layout an
        ARRAY_TYPE used in a pointer-to-array declarator.
        ARRAY_TYPE used in a pointer-to-array declarator.
2003-12-16  Diego Novillo  
2003-12-16  Diego Novillo  
        * tree-dfa.c (may_alias_p): If VAR and PTR are pointers with the
        * tree-dfa.c (may_alias_p): If VAR and PTR are pointers with the
        same alias set, return false.
        same alias set, return false.
        (get_memory_tag_for): Group based on alias set classes, not on
        (get_memory_tag_for): Group based on alias set classes, not on
        conflicting alias sets.
        conflicting alias sets.
        * tree-must-alias.c (promote_var): Don't bring aliases over when
        * tree-must-alias.c (promote_var): Don't bring aliases over when
        all the may-aliases of a non-promotable variable are promoted.
        all the may-aliases of a non-promotable variable are promoted.
2003-12-16  Andrew MacLeod  
2003-12-16  Andrew MacLeod  
        * tree-flow-inline.h (free_vuse, free_vdefs): Moved to
        * tree-flow-inline.h (free_vuse, free_vdefs): Moved to
        tree-ssa-operands.c
        tree-ssa-operands.c
        (get_def_ops, get_use_ops, get_vdef_ops, get_vuse_ops): Use the new
        (get_def_ops, get_use_ops, get_vdef_ops, get_vuse_ops): Use the new
        more direct structure pointer.
        more direct structure pointer.
        (get_use_op_ptr, get_def_op_ptr): Cast is no longer necessary.
        (get_use_op_ptr, get_def_op_ptr): Cast is no longer necessary.
        * tree-flow.h (struct stmt_ann_d): Replace operands and voperands
        * tree-flow.h (struct stmt_ann_d): Replace operands and voperands
        pointers with pointers directly to the operand types.
        pointers with pointers directly to the operand types.
        * tree-ssa-dom.c (cprop_into_stmt): Use new stmt based interface to
        * tree-ssa-dom.c (cprop_into_stmt): Use new stmt based interface to
        free virtual operands.  Check virtual bases of both VUSE and VDEF.
        free virtual operands.  Check virtual bases of both VUSE and VDEF.
        * tree-ssa-operands.c (struct voperands_d): Declare here, used only
        * tree-ssa-operands.c (struct voperands_d): Declare here, used only
        for previous_vops during stmt operand construction.
        for previous_vops during stmt operand construction.
        (struct vecmanage_d, vecmanage_add_segmen, vecmanage_add_special,
        (struct vecmanage_d, vecmanage_add_segmen, vecmanage_add_special,
        vecmanage_init, vecmanage_tree_ptr_init, vecmanage_fini, check_free,
        vecmanage_init, vecmanage_tree_ptr_init, vecmanage_fini, check_free,
        vecmanage_new_vector, vecmanage_new_tree_ptr_vector,
        vecmanage_new_vector, vecmanage_new_tree_ptr_vector,
        vecmanage_free_vector): Remove.
        vecmanage_free_vector): Remove.
        (allocate_ssa_op_vec, free_ssa_op_vec, allocate_ssa_virtual_op_vec,
        (allocate_ssa_op_vec, free_ssa_op_vec, allocate_ssa_virtual_op_vec,
        allocate_operands_t, allocate_voperands_t): Remove.
        allocate_operands_t, allocate_voperands_t): Remove.
        (finalize_new_ssa_operands, inalize_new_ssa_virtual_operand): Remove.
        (finalize_new_ssa_operands, inalize_new_ssa_virtual_operand): Remove.
        (struct freelist_d): New. List of free operand structures.
        (struct freelist_d): New. List of free operand structures.
        (check_optype_freelist): New. Choose memory from freelist, if available.
        (check_optype_freelist): New. Choose memory from freelist, if available.
        (add_optype_freelist): New. Add structure to freelist, if appropriate.
        (add_optype_freelist): New. Add structure to freelist, if appropriate.
        (allocate_def_optype): New. Allocate a def operand list from GC.
        (allocate_def_optype): New. Allocate a def operand list from GC.
        (allocate_use_optype): New. Allocate a useoperand list from GC.
        (allocate_use_optype): New. Allocate a useoperand list from GC.
        (allocate_vdef_optype): New. Allocate a vdef operand list from GC.
        (allocate_vdef_optype): New. Allocate a vdef operand list from GC.
        (allocate_vuse_optype): New. Allocate a vuse operand list from GC.
        (allocate_vuse_optype): New. Allocate a vuse operand list from GC.
        (free_uses, free_defs, free_vuses, free_vdefs): Use GC and the freelist.
        (free_uses, free_defs, free_vuses, free_vdefs): Use GC and the freelist.
        (remove_vuses, remove_vdefs): New.  External interface to remove virtual
        (remove_vuses, remove_vdefs): New.  External interface to remove virtual
        operands.
        operands.
        (init_ssa_operands, fini_ssa_operands): Ensure the free list is empty.
        (init_ssa_operands, fini_ssa_operands): Ensure the free list is empty.
        (finalize_ssa_defs, finalize_ssa_use, finalize_ssa_vdefs,
        (finalize_ssa_defs, finalize_ssa_use, finalize_ssa_vdefs,
        finalize_ssa_vuses): Use new direct pointers from the stmt annotation.
        finalize_ssa_vuses): Use new direct pointers from the stmt annotation.
        (append_vdef, append_vuse): No need to hack prev_vops pointer now.
        (append_vdef, append_vuse): No need to hack prev_vops pointer now.
        (get_stmt_operands): use new freeing interface, keep previous vops in
        (get_stmt_operands): use new freeing interface, keep previous vops in
        their own local structure for now, passing its address around.
        their own local structure for now, passing its address around.
        * tree-ssa-operands.h (struct def_optype_d, struct use_optype_d,
        * tree-ssa-operands.h (struct def_optype_d, struct use_optype_d,
        struct vdef_optype_d, struct vuse_optype_d): Implement as a single
        struct vdef_optype_d, struct vuse_optype_d): Implement as a single
        dynamically allocated structure.
        dynamically allocated structure.
        (struct operands_d, struct operands_d): Remove.
        (struct operands_d, struct operands_d): Remove.
        * tree-ssa-pre.c (subst_phis): Remove virtual operands using new funcs.
        * tree-ssa-pre.c (subst_phis): Remove virtual operands using new funcs.
2003-12-16  Jan Hubicka  
2003-12-16  Jan Hubicka  
        * tree-cfg.c (verify_addr_expr): Rename to ....
        * tree-cfg.c (verify_addr_expr): Rename to ....
        (verify_expr):  ... this one; check that no SSA names are on
        (verify_expr):  ... this one; check that no SSA names are on
        freelist.
        freelist.
        (verify_stmt, verify_stmts): Update calls of verify_addr_expr.
        (verify_stmt, verify_stmts): Update calls of verify_addr_expr.
        Revert until initializers are made language independent:
        Revert until initializers are made language independent:
        * cgraphunit.c (record_call_1): Do not call analyze_expr hook
        * cgraphunit.c (record_call_1): Do not call analyze_expr hook
        * langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
        * langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
        (LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
        (LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
        * longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.
        * longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.
2003-12-16  Zdenek Dvorak  
2003-12-16  Zdenek Dvorak  
        * tree-pretty-print.c (dump_bb_header): Show block number when
        * tree-pretty-print.c (dump_bb_header): Show block number when
        there is no label.
        there is no label.
        (pp_cfg_jump): Show labels in addition to block numbers.
        (pp_cfg_jump): Show labels in addition to block numbers.
        (dump_generic_bb_buff): Always call dump_bb_header.
        (dump_generic_bb_buff): Always call dump_bb_header.
2003-12-16  Jan Hubicka  
2003-12-16  Jan Hubicka  
        * cgraphunit.c (cgraph_remove_unreachable_nodes): Fix typo;
        * cgraphunit.c (cgraph_remove_unreachable_nodes): Fix typo;
        improve comments; cleanup linked list mantenance.
        improve comments; cleanup linked list mantenance.
2003-12-15  Diego Novillo  
2003-12-15  Diego Novillo  
        * tree-sra.c (can_be_scalarized_p): Reject volatile variables.
        * tree-sra.c (can_be_scalarized_p): Reject volatile variables.
        * sibcall.c (skip_copy_to_return_value): Initialize 'hardret' and
        * sibcall.c (skip_copy_to_return_value): Initialize 'hardret' and
        'softret'.
        'softret'.
2003-12-16  Jan Hubicka  
2003-12-16  Jan Hubicka  
        * cgraph.c (cgraph_remove_node): Ignore DECL_EXTERNAL clones.
        * cgraph.c (cgraph_remove_node): Ignore DECL_EXTERNAL clones.
        * cgraphunit.c (verify_cgraph_node): Do not insist on unemmited extern
        * cgraphunit.c (verify_cgraph_node): Do not insist on unemmited extern
        inline functions to be valid.
        inline functions to be valid.
        (cgraph_finalize_compilation_unit):  Fix ordering.
        (cgraph_finalize_compilation_unit):  Fix ordering.
        (cgraph_mark_functions_to_output): Do not insist on DECL_EXTERNAL
        (cgraph_mark_functions_to_output): Do not insist on DECL_EXTERNAL
        nodes to be reclaimed.
        nodes to be reclaimed.
        (cgraph_remove_unreachable_nodes): New function.
        (cgraph_remove_unreachable_nodes): New function.
        (cgraph_decide_inlining): use it.
        (cgraph_decide_inlining): use it.
2003-12-15  Andrew MacLeod  
2003-12-15  Andrew MacLeod  
        * Makefile.in (TREE_FLOW_H): Add dependence on tree-ssa-operands.h
        * Makefile.in (TREE_FLOW_H): Add dependence on tree-ssa-operands.h
        (OBJS-common): Add tree-ssa-operands.o
        (OBJS-common): Add tree-ssa-operands.o
        (tree-ssa-operands.o): Add dependencies.
        (tree-ssa-operands.o): Add dependencies.
        (GTFILES): Add tree-ssa-operands.[ch].
        (GTFILES): Add tree-ssa-operands.[ch].
        * tree-dfa.c (get_stmt_operands, get_expr_operands, add_stmt_operand,
        * tree-dfa.c (get_stmt_operands, get_expr_operands, add_stmt_operand,
        note_addressable, add_def, add_use, add_vde, add_vuse,
        note_addressable, add_def, add_use, add_vde, add_vuse,
        add_call_clobber_ops, add_call_read_ops): Moved to tree-ssa-operands.c.
        add_call_clobber_ops, add_call_read_ops): Moved to tree-ssa-operands.c.
        (compute_immediate_uses_for_stmt): Use new optypes interface.
        (compute_immediate_uses_for_stmt): Use new optypes interface.
        (cleanup_operand_arrays): Delete.
        (cleanup_operand_arrays): Delete.
        (collect_dfa_stats_r): Use new optypes interface.
        (collect_dfa_stats_r): Use new optypes interface.
        (get_call_flags): Moved to tree-ssa-operands.c.
        (get_call_flags): Moved to tree-ssa-operands.c.
        (vdefs_disappeared_p, mark_new_vars_to_rename): Use optypes interface.
        (vdefs_disappeared_p, mark_new_vars_to_rename): Use optypes interface.
        * tree-flow-inline.h (def_ops, use_ops, vdef_ops, vuse_ops): Use new
        * tree-flow-inline.h (def_ops, use_ops, vdef_ops, vuse_ops): Use new
        optypes.
        optypes.
        (free_vuses): New. Clear and release vuses.
        (free_vuses): New. Clear and release vuses.
        (free_vdefs): New. Clear and release vdefs.
        (free_vdefs): New. Clear and release vdefs.
        (get_use_ops_ptr): New. Get address of a use op.
        (get_use_ops_ptr): New. Get address of a use op.
        (get_def_ops_ptr): New. Get address of a use op.
        (get_def_ops_ptr): New. Get address of a use op.
        (get_vdef_result_ptr): New. Get address of a use op.
        (get_vdef_result_ptr): New. Get address of a use op.
        (get_vdef_op_ptr): New. Get address of a use op.
        (get_vdef_op_ptr): New. Get address of a use op.
        (get_vuse_op_ptr): New. Get address of a use op.
        (get_vuse_op_ptr): New. Get address of a use op.
        (start_ssa_stmt_operands): New. Entry point to start processing stmt
        (start_ssa_stmt_operands): New. Entry point to start processing stmt
        operands.
        operands.
        * tree-flow.h (struct operands_d, struct voperands_d): Move to
        * tree-flow.h (struct operands_d, struct voperands_d): Move to
        tree-ssa-operands.h
        tree-ssa-operands.h
        (struct stmt_ann_d): Add GTY markers to operands.
        (struct stmt_ann_d): Add GTY markers to operands.
        * tree-pretty-print.c (dump_vops): Use optypes interface.
        * tree-pretty-print.c (dump_vops): Use optypes interface.
        * tree-sra.c (create_scalar_copies): Use optypes interface.
        * tree-sra.c (create_scalar_copies): Use optypes interface.
        (scalarize_structures, scalarize_modify_exp): Use optypes interface.
        (scalarize_structures, scalarize_modify_exp): Use optypes interface.
        * tree-ssa-ccp.c (visit_stmt, ccp_fold, initialize, replace_uses_in,
        * tree-ssa-ccp.c (visit_stmt, ccp_fold, initialize, replace_uses_in,
        likely_value, set_rhs): Use optypes interface.
        likely_value, set_rhs): Use optypes interface.
        * tree-ssa-dce.c (find_useful_stmts, stmt_useful_p, process_worklist):
        * tree-ssa-dce.c (find_useful_stmts, stmt_useful_p, process_worklist):
        Use optypes interface.
        Use optypes interface.
        * tree-ssa-dom.c (thread_across_edge, thread_jumps_walk_stmts): Use
        * tree-ssa-dom.c (thread_across_edge, thread_jumps_walk_stmts): Use
        optypes interface.
        optypes interface.
        (cprop_into_stmt): Rewrite using new interface.
        (cprop_into_stmt): Rewrite using new interface.
        (eliminate_redundant_computations, record_equivalences_from_stmt,
        (eliminate_redundant_computations, record_equivalences_from_stmt,
        optimize_stmt, avail_expr_hash, avail_expr_eq): Use optypes interface.
        optimize_stmt, avail_expr_hash, avail_expr_eq): Use optypes interface.
        * tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
        * tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
        build_tree_conflict_graph,register_ssa_partitions_for_vars): Use
        build_tree_conflict_graph,register_ssa_partitions_for_vars): Use
        optypes interface.
        optypes interface.
        * tree-ssa-pre.c (names_match_p, maybe_find_rhs_use_for_var,
        * tree-ssa-pre.c (names_match_p, maybe_find_rhs_use_for_var,
        expr_phi_insertion, same_e_version_real_occ_real_occ, opnum_of_phi,
        expr_phi_insertion, same_e_version_real_occ_real_occ, opnum_of_phi,
        generate_expr_as_of_bb, generate_vops_as_of_bb, subst_phis,
        generate_expr_as_of_bb, generate_vops_as_of_bb, subst_phis,
        load_modified_real_occ_real_occ, same_e_version_phi_result, can_insert,
        load_modified_real_occ_real_occ, same_e_version_phi_result, can_insert,
        get_default_def, reaching_def, process_left_occs_and_kills,
        get_default_def, reaching_def, process_left_occs_and_kills,
        collect_expressions): Use optypes interface.
        collect_expressions): Use optypes interface.
        * tree-ssa.c (mark_def_sites, check_replaceable, find_replaceable_in_bb,
        * tree-ssa.c (mark_def_sites, check_replaceable, find_replaceable_in_bb,
        dump_replaceable_exprs, rewrite_trees, verify_ssa, rewrite_stmt): Use
        dump_replaceable_exprs, rewrite_trees, verify_ssa, rewrite_stmt): Use
        optypes interface.
        optypes interface.
        (init_tree_ssa): Initialize new operand data structures.
        (init_tree_ssa): Initialize new operand data structures.
        (delete_tree_ssa): Free new operand structures.
        (delete_tree_ssa): Free new operand structures.
        * tree.h (VDEF_RESULT, VDEF_OP, NUM_VDEFS): Move to tree-ssa-operands.h.
        * tree.h (VDEF_RESULT, VDEF_OP, NUM_VDEFS): Move to tree-ssa-operands.h.
        * tree-ssa-operands.h: New file.
        * tree-ssa-operands.h: New file.
        (struct def_optype_d): New. Structure for stmt defs.
        (struct def_optype_d): New. Structure for stmt defs.
        (struct use_optype_d): New. Structure for stmt uses.
        (struct use_optype_d): New. Structure for stmt uses.
        (struct vdef_optype_d): New. Structure for stmt vdefs.
        (struct vdef_optype_d): New. Structure for stmt vdefs.
        (struct vuse_optype_d): New. Structure for stmt vuses.
        (struct vuse_optype_d): New. Structure for stmt vuses.
        (USE_OPS, STMT_USE_OPS, NUM_USES, USE_OP_PTR, USE_OP): Macros to
        (USE_OPS, STMT_USE_OPS, NUM_USES, USE_OP_PTR, USE_OP): Macros to
        access stmt uses.
        access stmt uses.
        (DEF_OPS, STMT_DEF_OPS, NUM_DEFS, DEF_OP_PTR, DEF_OP): Macros to
        (DEF_OPS, STMT_DEF_OPS, NUM_DEFS, DEF_OP_PTR, DEF_OP): Macros to
        access stmt defs.
        access stmt defs.
        (VDEF_OPS, STMT_VDEF_OPS, NUM_VDEFS, VDEF_RESULT_PTR, VDEF_RESULT,
        (VDEF_OPS, STMT_VDEF_OPS, NUM_VDEFS, VDEF_RESULT_PTR, VDEF_RESULT,
        VDEF_OP_PTR, VDEF_OP): Macros to access stmt vdefs.
        VDEF_OP_PTR, VDEF_OP): Macros to access stmt vdefs.
        (VUSE_OPS, STMT_VUSE_OPS, NUM_VUSES, VUSE_OP_PTR, VUSE_OP): Macros to
        (VUSE_OPS, STMT_VUSE_OPS, NUM_VUSES, VUSE_OP_PTR, VUSE_OP): Macros to
        access stmt vuses.
        access stmt vuses.
        (struct operands_d, struct voperands_d): moved from tree-dfa.c.
        (struct operands_d, struct voperands_d): moved from tree-dfa.c.
        * tree-ssa-operands.c: New file.
        * tree-ssa-operands.c: New file.
        (build_defs, build_uses, build_vdefs, build_vuses): New static varrays.
        (build_defs, build_uses, build_vdefs, build_vuses): New static varrays.
        (struct vecmanage_d): New. Struct to manage non-GC vectors.
        (struct vecmanage_d): New. Struct to manage non-GC vectors.
        (vecmanage_add_segment): New. Add a new segment to a vector manager.
        (vecmanage_add_segment): New. Add a new segment to a vector manager.
        (vecmanage_add_special): New. Add a large vector to the special list.
        (vecmanage_add_special): New. Add a large vector to the special list.
        (vecmanage_init): Initialize a vector manager.
        (vecmanage_init): Initialize a vector manager.
        (vecmanage_tree_ptr_init): New. Initialize a vector manager for tree *.
        (vecmanage_tree_ptr_init): New. Initialize a vector manager for tree *.
        (vecmanage_fini): New. Release vector manager memory.
        (vecmanage_fini): New. Release vector manager memory.
        (check_free): New. Look for free memory in the vector maanger.
        (check_free): New. Look for free memory in the vector maanger.
        (vecmanage_new_vector): New. Allocate a vector.
        (vecmanage_new_vector): New. Allocate a vector.
        (vecmanage_new_tree_ptr_vector): New. Allocate a vector of 'tree *'.
        (vecmanage_new_tree_ptr_vector): New. Allocate a vector of 'tree *'.
        (vecmanage_free_vector): New. Free a vector.
        (vecmanage_free_vector): New. Free a vector.
        (free_ssa_op_vec): New. Free an ssa operand's memory.
        (free_ssa_op_vec): New. Free an ssa operand's memory.
        (allocate_ssa_op_vec): New. Allocate a vector for use/defs.
        (allocate_ssa_op_vec): New. Allocate a vector for use/defs.
        (allocate_ssa_virtual_op_vec): New. Allocate a vector for vuse/vdefs.
        (allocate_ssa_virtual_op_vec): New. Allocate a vector for vuse/vdefs.
        (allocate_operands_t): New. Allocate an operand structure.
        (allocate_operands_t): New. Allocate an operand structure.
        (allocate_voperands_t): New. Allocate a virtual operand structure.
        (allocate_voperands_t): New. Allocate a virtual operand structure.
        (free_uses): New. Clear and release uses.
        (free_uses): New. Clear and release uses.
        (free_defs): New. Clear and release defs.
        (free_defs): New. Clear and release defs.
        (init_ssa_operands): New. Initialize ssa operand management.
        (init_ssa_operands): New. Initialize ssa operand management.
        (fini_ssa_operands): New. Cleanup ssa operand management.
        (fini_ssa_operands): New. Cleanup ssa operand management.
        (finalize_new_ssa_operands): New. Commit current operands.
        (finalize_new_ssa_operands): New. Commit current operands.
        (finalize_new_ssa_virtual_operands): New. Commit current virtual ops.
        (finalize_new_ssa_virtual_operands): New. Commit current virtual ops.
        (finalize_ssa_defs): New. Commit and verify stmt definitions.
        (finalize_ssa_defs): New. Commit and verify stmt definitions.
        (finalize_ssa_uses): New. Commit and verify stmt uses.
        (finalize_ssa_uses): New. Commit and verify stmt uses.
        (finalize_ssa_vdefs): New. Commit and verify stmt virtual definitions.
        (finalize_ssa_vdefs): New. Commit and verify stmt virtual definitions.
        (finalize_ssa_vuses): New. Commit and verify stmt virtual uses.
        (finalize_ssa_vuses): New. Commit and verify stmt virtual uses.
        (finalize_ssa_stmt_operands): New. Commit all stmt operands.
        (finalize_ssa_stmt_operands): New. Commit all stmt operands.
        (verify_start_operands): New. Verify build mechanism is ready for a new
        (verify_start_operands): New. Verify build mechanism is ready for a new
        stmt.
        stmt.
        (append_def): Renamed from add_def, and moved from tree-dfa.c.
        (append_def): Renamed from add_def, and moved from tree-dfa.c.
        (append_use): Renamed from add_def, and moved from tree-dfa.c.
        (append_use): Renamed from add_def, and moved from tree-dfa.c.
        (append_vdef): Renamed from add_def, and moved from tree-dfa.c.
        (append_vdef): Renamed from add_def, and moved from tree-dfa.c.
        (append_vuse): Renamed from add_def, and moved from tree-dfa.c.
        (append_vuse): Renamed from add_def, and moved from tree-dfa.c.
        (add_vuse): New. Entry point to add a vuse to a stmt.
        (add_vuse): New. Entry point to add a vuse to a stmt.
        (get_call_flags): Moved from tree-dfa.c
        (get_call_flags): Moved from tree-dfa.c
        (get_stmt_operands, get_expr_operands, add_stmt_operand): Moved from
        (get_stmt_operands, get_expr_operands, add_stmt_operand): Moved from
        tree-dfa.c, and use new optype interface.
        tree-dfa.c, and use new optype interface.
        (note_addressabe, add_call_clobber_ops, add_call_read_ops): Moved from
        (note_addressabe, add_call_clobber_ops, add_call_read_ops): Moved from
        tree-dfa.c
        tree-dfa.c
2003-12-15  Diego Novillo  
2003-12-15  Diego Novillo  
        * tree-optimize.c (optimize_function_tree): Call BITMAP_XFREE.
        * tree-optimize.c (optimize_function_tree): Call BITMAP_XFREE.
2003-12-15  Diego Novillo  
2003-12-15  Diego Novillo  
        PR optimization/12747
        PR optimization/12747
        * tree-cfg.c (verify_addr_expr): Simplify predicates.
        * tree-cfg.c (verify_addr_expr): Simplify predicates.
        * tree-must-alias.c (addresses_needed): Declare as file local.
        * tree-must-alias.c (addresses_needed): Declare as file local.
        (can_be_promoted): New.
        (can_be_promoted): New.
        (tree_compute_must_alias): Call it.
        (tree_compute_must_alias): Call it.
        Remove promoted variables from call_clobbered_vars.
        Remove promoted variables from call_clobbered_vars.
        (find_addressable_vars): Update comment.
        (find_addressable_vars): Update comment.
        Remove argument.  Update callers.
        Remove argument.  Update callers.
        (promote_var): Always clear TREE_ADDRESSABLE.
        (promote_var): Always clear TREE_ADDRESSABLE.
        Don't remove promoted variables from call_clobbered_vars.
        Don't remove promoted variables from call_clobbered_vars.
        If the promoted variable is in the may-alias set of a
        If the promoted variable is in the may-alias set of a
        non-promotable variable, copy its alias set into the alias set of
        non-promotable variable, copy its alias set into the alias set of
        the non-promotable variable.
        the non-promotable variable.
        (find_variable_in): Update comment.
        (find_variable_in): Update comment.
        * tree-sra.c (can_be_scalarized_p): Reject structures with
        * tree-sra.c (can_be_scalarized_p): Reject structures with
        __complex__ fields in them.
        __complex__ fields in them.
2003-12-15  Diego Novillo  
2003-12-15  Diego Novillo  
            Jason Merrill 
            Jason Merrill 
        PR optimization/12747
        PR optimization/12747
        * Makefile.in (tree-simple.o): Add dependency on bitmap.h and
        * Makefile.in (tree-simple.o): Add dependency on bitmap.h and
        $(GGC_H).
        $(GGC_H).
        (GTFILES): Add tree-simple.c.
        (GTFILES): Add tree-simple.c.
        * tree-simple.c: Include ggc.h and bitmap.h.
        * tree-simple.c: Include ggc.h and bitmap.h.
        (is_gimple_non_addressable_1): Remove.  Update all callers.
        (is_gimple_non_addressable_1): Remove.  Update all callers.
        (types_checked): New local variable.
        (types_checked): New local variable.
        (types_in_memory): New local variable.
        (types_in_memory): New local variable.
        (struct_needs_to_live_in_memory): New.
        (struct_needs_to_live_in_memory): New.
        (needs_to_live_in_memory): New.
        (needs_to_live_in_memory): New.
        (is_gimple_reg): Call it.
        (is_gimple_reg): Call it.
        (is_gimple_non_addressable): Call it.
        (is_gimple_non_addressable): Call it.
        (is_gimple_call_clobbered): Call it.
        (is_gimple_call_clobbered): Call it.
        * tree-simple.h (needs_to_live_in_memory): Declare.
        * tree-simple.h (needs_to_live_in_memory): Declare.
2003-12-14  Andreas Jaeger  
2003-12-14  Andreas Jaeger  
        * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Handle
        * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Handle
        GNU F95.
        GNU F95.
2003-12-14  Jan Hubicka  
2003-12-14  Jan Hubicka  
        * cgraphunit.c (cgraph_expand_function):  Release function body when no
        * cgraphunit.c (cgraph_expand_function):  Release function body when no
        longer needed.
        longer needed.
        (lookup_recursive_calls): New function.
        (lookup_recursive_calls): New function.
        (cgraph_decide_recursive_inlining): Likewise.
        (cgraph_decide_recursive_inlining): Likewise.
        (cgraph_decide_inlining_of_small_functions): Do recursive inlining.
        (cgraph_decide_inlining_of_small_functions): Do recursive inlining.
        * tree-inline.c: Include function.h
        * tree-inline.c: Include function.h
        (copy_body): Choose saved body for recursive inlining.
        (copy_body): Choose saved body for recursive inlining.
        (initialize_inlined_parameters): Likewise.
        (initialize_inlined_parameters): Likewise.
        (expand_call_inline): Do not verify nodes when recursivly inlining,
        (expand_call_inline): Do not verify nodes when recursivly inlining,
        insert ret_label into decl map.
        insert ret_label into decl map.
        * params.def (PARAM_MAX_INLINE_INSNS_RECURSIVE,
        * params.def (PARAM_MAX_INLINE_INSNS_RECURSIVE,
        PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO,
        PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO,
        PARAM_MAX_INLINE_RECURSIVE_DEPTH,
        PARAM_MAX_INLINE_RECURSIVE_DEPTH,
        PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO): New argument.
        PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO): New argument.
        * invoke.texi (max-inline-insns-recursive, max-inline-recursive-depth):
        * invoke.texi (max-inline-insns-recursive, max-inline-recursive-depth):
        Document.
        Document.
        * Makefile.in (tree-inline.o): Include function.h.
        * Makefile.in (tree-inline.o): Include function.h.
2003-12-14  Jan Hubicka  
2003-12-14  Jan Hubicka  
        * cgraphunit.c (record_call_1): Do not call analyze_expr hook
        * cgraphunit.c (record_call_1): Do not call analyze_expr hook
        * langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
        * langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
        (LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
        (LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
        * longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.
        * longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.
2003-12-13  Jan Hubicka  
2003-12-13  Jan Hubicka  
        * timevar.def (TV_TREE_STMT_VERIFY, TV_CFG_VERIFY, TV_CGRAPH_VERIFY):
        * timevar.def (TV_TREE_STMT_VERIFY, TV_CFG_VERIFY, TV_CGRAPH_VERIFY):
        New timers.
        New timers.
        * tree-cfg.c (verify_stmts):  Push/pop timevar.
        * tree-cfg.c (verify_stmts):  Push/pop timevar.
        * cfg.c: Include timevar.h
        * cfg.c: Include timevar.h
        (verify_flow_info): Push/pop timevar.
        (verify_flow_info): Push/pop timevar.
        * Makefile.in (cfg.o): Add dependnecy on TIMEVARS
        * Makefile.in (cfg.o): Add dependnecy on TIMEVARS
        * cgraph.c (cgraph_create_edge): Sanity check for duplicates;
        * cgraph.c (cgraph_create_edge): Sanity check for duplicates;
        initialize aux.
        initialize aux.
        (cgraph_remove_node): Decrease cgraph_n_nodes; do not clear
        (cgraph_remove_node): Decrease cgraph_n_nodes; do not clear
        DECL_SAVED_TREE when dumping.
        DECL_SAVED_TREE when dumping.
        (cgraph_dump_node): Break out from ...; print more information.
        (cgraph_dump_node): Break out from ...; print more information.
        (cgraph_dump): ... here.
        (cgraph_dump): ... here.
        * cgraph.h (cgraph_node): Add aux field.
        * cgraph.h (cgraph_node): Add aux field.
        (dump_cgraph_node, verify_cgraph, verify_cgraph_node): Declare.
        (dump_cgraph_node, verify_cgraph, verify_cgraph_node): Declare.
        (cgraph_mark_inline_edge): Declare
        (cgraph_mark_inline_edge): Declare
        * cgraphunit.c (error_found): New static variable.
        * cgraphunit.c (error_found): New static variable.
        (verify_cgraph_node_1): New static function.
        (verify_cgraph_node_1): New static function.
        (verify_cgraph_node, verify_cgraph): New global function.
        (verify_cgraph_node, verify_cgraph): New global function.
        (cgraph_expand_function): More sanity checks.
        (cgraph_expand_function): More sanity checks.
        (cgraph_clone_inline_nodes): Destructivly clone DECL_EXTERNAL nodes.
        (cgraph_clone_inline_nodes): Destructivly clone DECL_EXTERNAL nodes.
        (cgraph_mark_inline_edge): Make global.
        (cgraph_mark_inline_edge): Make global.
        (cgraph_decide_inlining): Remove extern inline functions never inlined.
        (cgraph_decide_inlining): Remove extern inline functions never inlined.
        (cgraph_decide_inlining_incrementally): Verify that function body is
        (cgraph_decide_inlining_incrementally): Verify that function body is
        still present.
        still present.
        (expand_all_functions): Verify that all nodes are reachable.
        (expand_all_functions): Verify that all nodes are reachable.
        (cgraph_optimize): Verify cgraph and memory management.
        (cgraph_optimize): Verify cgraph and memory management.
        * tree-inline.c (copy_body_r): All edges must be present.
        * tree-inline.c (copy_body_r): All edges must be present.
        (expand_call_inline): Sanity check newly created edges and nodes
        (expand_call_inline): Sanity check newly created edges and nodes
        being inlined.
        being inlined.
        (optimize_inline_calls): Sanity check that we've inlined everything.
        (optimize_inline_calls): Sanity check that we've inlined everything.
        * tree-optimize.c (tree_rest_of_compilation): Clone functions inlined
        * tree-optimize.c (tree_rest_of_compilation): Clone functions inlined
        into cloned node.
        into cloned node.
2003-12-13  Jan Hubicka  
2003-12-13  Jan Hubicka  
        * tree-flow.h (tree_ssa_useless_type_conversion_1): Declare.
        * tree-flow.h (tree_ssa_useless_type_conversion_1): Declare.
        * tree-flow.c (tree_ssa_useless_type_conversion_1): Break out from
        * tree-flow.c (tree_ssa_useless_type_conversion_1): Break out from
        from...; allow complex types whose subtypes match.
        from...; allow complex types whose subtypes match.
        (tree_ssa_useless_type_conversion): ... here.
        (tree_ssa_useless_type_conversion): ... here.
2003-12-12  Jeff Law  
2003-12-12  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Don't call cleanup_control_expr
        * tree-ssa-dom.c (optimize_stmt): Don't call cleanup_control_expr
        here.  Instead just note that we need to cleanup the cfg (which
        here.  Instead just note that we need to cleanup the cfg (which
        will DTRT).
        will DTRT).
        * timevar.def (TV_TREE_SSA_THREAD_JUMPS): Kill.
        * timevar.def (TV_TREE_SSA_THREAD_JUMPS): Kill.
        * tree-dump.c (dump_files): Kill .thread dump.
        * tree-dump.c (dump_files): Kill .thread dump.
        * tree.h (TDI_thread_jumps): Kill.
        * tree.h (TDI_thread_jumps): Kill.
        * tree-flow.h (tree_ssa_dominator_thread_jumps): Kill prototype.
        * tree-flow.h (tree_ssa_dominator_thread_jumps): Kill prototype.
        * tree-optimize.c (optimize_function_tree): Kill call to
        * tree-optimize.c (optimize_function_tree): Kill call to
        tree_ssa_dominator_thread_jumps.
        tree_ssa_dominator_thread_jumps.
        * tree-ssa-dom.c (thread_through_phis): Kill.  We no longer need
        * tree-ssa-dom.c (thread_through_phis): Kill.  We no longer need
        to restrict threading through PHIs.
        to restrict threading through PHIs.
        (tree_ssa_dominator_thread_jumps): Kill.
        (tree_ssa_dominator_thread_jumps): Kill.
        (tree_ssa_domiantor_optimize_1): Fold back into
        (tree_ssa_domiantor_optimize_1): Fold back into
        tree_ssa_dominator_optimize.
        tree_ssa_dominator_optimize.
        (tree_ssa_dominator_optimize): Mark back edges in the flow graph.
        (tree_ssa_dominator_optimize): Mark back edges in the flow graph.
        Kill code which conditionalized the walk_tree callbacks based
        Kill code which conditionalized the walk_tree callbacks based
        on thread_through_phis.  When threading jumps, reorganize code
        on thread_through_phis.  When threading jumps, reorganize code
        so that we can take the affected variables out of SSA form.
        so that we can take the affected variables out of SSA form.
        Mark new variables created by out-of-ssa code as needing to be
        Mark new variables created by out-of-ssa code as needing to be
        rewritten.
        rewritten.
        (thread_across_edge): Always allow threading through phis.
        (thread_across_edge): Always allow threading through phis.
        (thread_jumps_walk_stmts): Kill.
        (thread_jumps_walk_stmts): Kill.
        * tree-ssa.c (create_temp): When we create a new temporary, make
        * tree-ssa.c (create_temp): When we create a new temporary, make
        sure to put it into referenced_vars, give it an ID number and
        sure to put it into referenced_vars, give it an ID number and
        a suitable mem_tag.
        a suitable mem_tag.
        (eliminate_build): If we encounter a PHI argument which is an
        (eliminate_build): If we encounter a PHI argument which is an
        SSA_VAR we are not rewriting out of SSA form, then just treat
        SSA_VAR we are not rewriting out of SSA form, then just treat
        it like a constant.
        it like a constant.
        (rewrite_vars_out_of_ssa): New function.
        (rewrite_vars_out_of_ssa): New function.
        * tree-flow.h (rewrite_vars_out_of_ssa): Prototype.
        * tree-flow.h (rewrite_vars_out_of_ssa): Prototype.
        * tree-ssa-live.c (register_ssa_partitions_for_vars): New function.
        * tree-ssa-live.c (register_ssa_partitions_for_vars): New function.
        * tree-ssa-live.h (register_ssa_partitions_for_vars): Prototype.
        * tree-ssa-live.h (register_ssa_partitions_for_vars): Prototype.
2003-12-12  Jan Hubicka  
2003-12-12  Jan Hubicka  
        * tree-inline.c (remap_decl): Avoid invalid sharing.
        * tree-inline.c (remap_decl): Avoid invalid sharing.
        * cp-tree.h (optimize_function): Kill.
        * cp-tree.h (optimize_function): Kill.
        * optimize.c (optimize_function): Kill.
        * optimize.c (optimize_function): Kill.
        * semantics.c (expand_body): Do not call optimize_function.
        * semantics.c (expand_body): Do not call optimize_function.
2003-12-12  Jan Hubicka  
2003-12-12  Jan Hubicka  
        * cgraphunit.c (cgraph_optimize):  Do not decide inlining when not
        * cgraphunit.c (cgraph_optimize):  Do not decide inlining when not
        inlining
        inlining
2003-12-11  Jan Hubicka  
2003-12-11  Jan Hubicka  
        * tree-inline.c (initialize_inlined_parameters): Disable
        * tree-inline.c (initialize_inlined_parameters): Disable
        constant propagation for non-gimple-min-invariant when
        constant propagation for non-gimple-min-invariant when
        preserving gimple form.
        preserving gimple form.
2003-12-11  Jeff Law  
2003-12-11  Jeff Law  
        * tree-ssa-ccp.c (widen_bitfield): Clear out unwanted high bits
        * tree-ssa-ccp.c (widen_bitfield): Clear out unwanted high bits
        even if the field's type is unsigned.
        even if the field's type is unsigned.
        * tree-ssa-dom.c (record_equivalences_from_stmt): When creating
        * tree-ssa-dom.c (record_equivalences_from_stmt): When creating
        equivalences from stores, be more careful about non-constant
        equivalences from stores, be more careful about non-constant
        stores to bitfields.
        stores to bitfields.
2003-12-11  Diego Novillo  
2003-12-11  Diego Novillo  
        * opts.c (decode_options): Do not enable the tree loop optimizer by
        * opts.c (decode_options): Do not enable the tree loop optimizer by
        default.
        default.
        * tree-ssa-loop.c (tree_ssa_loop_opt): Remove ENABLE_CHECKING
        * tree-ssa-loop.c (tree_ssa_loop_opt): Remove ENABLE_CHECKING
        guards.
        guards.
2003-12-10  Richard Henderson  
2003-12-10  Richard Henderson  
        * builtins.c (expand_builtin_profile_func): New.
        * builtins.c (expand_builtin_profile_func): New.
        (expand_builtin): Use it.
        (expand_builtin): Use it.
        * builtins.def (BUILT_IN_PROFILE_FUNC_ENTER): New.
        * builtins.def (BUILT_IN_PROFILE_FUNC_ENTER): New.
        (BUILT_IN_PROFILE_FUNC_EXIT): New.
        (BUILT_IN_PROFILE_FUNC_EXIT): New.
        * function.c (expand_function_start, expand_function_end): Don't
        * function.c (expand_function_start, expand_function_end): Don't
        do function instrumentation here.
        do function instrumentation here.
        * gimplify.c (gimplify_function_tree): Do it here.
        * gimplify.c (gimplify_function_tree): Do it here.
        * c-opts.c (c_common_post_options): Don't ever use rtl inlining.
        * c-opts.c (c_common_post_options): Don't ever use rtl inlining.
2003-12-10  Diego Novillo  
2003-12-10  Diego Novillo  
        * ifcvt.c (dead_or_predicable): Initialize local variable
        * ifcvt.c (dead_or_predicable): Initialize local variable
        'earliest'.
        'earliest'.
        * tree-cfg.c (verify_stmt): Fix typo.
        * tree-cfg.c (verify_stmt): Fix typo.
        * tree-ssa-dom.c (propagate_value): New local function.
        * tree-ssa-dom.c (propagate_value): New local function.
        (cprop_into_stmt): Call it.
        (cprop_into_stmt): Call it.
        (cprop_into_phis): Call it.
        (cprop_into_phis): Call it.
        (eliminate_redundant_computations): Call it.
        (eliminate_redundant_computations): Call it.
2003-12-10  Dale Johannesen  
2003-12-10  Dale Johannesen  
        * tree-dfa.c (compute_alias_sets):  Don't try to make
        * tree-dfa.c (compute_alias_sets):  Don't try to make
        GLOBAL_VAR alias itself.
        GLOBAL_VAR alias itself.
2003-12-08  Steven Bosscher  
2003-12-08  Steven Bosscher  
        * tree-must-alias.c (tree_compute_must_alias): Use
        * tree-must-alias.c (tree_compute_must_alias): Use
        num_call_clobbered_vars and call_clobbered_var() instead of
        num_call_clobbered_vars and call_clobbered_var() instead of
        poking in the call_clobbered_vars varray directly.
        poking in the call_clobbered_vars varray directly.
2003-12-11  Jan Hubicka  
2003-12-11  Jan Hubicka  
        * cgraph.c (cgraph_function_possibly_inlined_p): Fix syntax error on
        * cgraph.c (cgraph_function_possibly_inlined_p): Fix syntax error on
        gcc-2.95.
        gcc-2.95.
2003-12-10  Diego Novillo  
2003-12-10  Diego Novillo  
        Revert
        Revert
        2003-12-07  Richard Henderson  
        2003-12-07  Richard Henderson  
                * c-common.c (c_address_looks_like_offsetof): New.
                * c-common.c (c_address_looks_like_offsetof): New.
                * c-common.h (c_address_looks_like_offsetof): Declare.
                * c-common.h (c_address_looks_like_offsetof): Declare.
                * c-typeck.c (build_unary_op) : Use it.  Don't lower
                * c-typeck.c (build_unary_op) : Use it.  Don't lower
                address references not destined for offsetof.
                address references not destined for offsetof.
                (c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
                (c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
                when looking for returning address of local variable.
                when looking for returning address of local variable.
                * expr.c (expand_expr_1): Don't dereference size
                * expr.c (expand_expr_1): Don't dereference size
                of unbounded arrays.
                of unbounded arrays.
                * gimplify.c (gimplify_addr_expr): Only fold
                * gimplify.c (gimplify_addr_expr): Only fold
                address of variable size array elements.
                address of variable size array elements.
                * tree-simple.c (is_gimple_min_invariant): Also check
                * tree-simple.c (is_gimple_min_invariant): Also check
                is_gimple_variable before disallowing offset address for type.
                is_gimple_variable before disallowing offset address for type.
                * tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
                * tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
                (maybe_fold_offset_to_component_ref): Use it.
                (maybe_fold_offset_to_component_ref): Use it.
                (maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
                (maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
                (maybe_fold_offset_to_array_ref): Likewise.
                (maybe_fold_offset_to_array_ref): Likewise.
                Don't fail for division remainder non-zero.
                Don't fail for division remainder non-zero.
                * varasm.c (initializer_constant_valid_p) : Use
                * varasm.c (initializer_constant_valid_p) : Use
                handled_component_p and look inside references.
                handled_component_p and look inside references.
                : Always look past widening casts.
                : Always look past widening casts.
2003-12-09  Jan Hubicka  
2003-12-09  Jan Hubicka  
        * cgraph.c (cgraph_inline_hash): New global variable.
        * cgraph.c (cgraph_inline_hash): New global variable.
        (cgraph_create_node): Break out of ....
        (cgraph_create_node): Break out of ....
        (cgraph_node): ... this one.
        (cgraph_node): ... this one.
        (cgraph_redirect_edge_callee):  New function.
        (cgraph_redirect_edge_callee):  New function.
        (cgraph_remove_node): Aggressively elliminate dead nodes;
        (cgraph_remove_node): Aggressively elliminate dead nodes;
        remove node out of clone list.
        remove node out of clone list.
        (dump_cgraph): Dump inlined_to field; dump uid numbers.
        (dump_cgraph): Dump inlined_to field; dump uid numbers.
        (cgraph_clone_edge): Return edge created.
        (cgraph_clone_edge): Return edge created.
        (cgraph_clone_node): New.
        (cgraph_clone_node): New.
        (cgraph_function_possibly_inlined_p): Re-implement using hashtable.
        (cgraph_function_possibly_inlined_p): Re-implement using hashtable.
        * cgraph.h: Include hashtab.h
        * cgraph.h: Include hashtab.h
        (struct cgraph_global_info): Kill inline_once, will be output and
        (struct cgraph_global_info): Kill inline_once, will be output and
        cloned_times fields.  Add inlined_to field.
        cloned_times fields.  Add inlined_to field.
        (cgraph_node): Add next_clone.
        (cgraph_node): Add next_clone.
        (cgraph_inline_hash): Declare.
        (cgraph_inline_hash): Declare.
        (cgraph_clone_edge): Update prototype.
        (cgraph_clone_edge): Update prototype.
        (cgraph_clone_node, cgraph_redirect_callee): Declare.
        (cgraph_clone_node, cgraph_redirect_callee): Declare.
        * cgraphunit.c (cgraph_optimize_function): Kill.
        * cgraphunit.c (cgraph_optimize_function): Kill.
        (cgraph_assemble_function): Kill next_needed to avoid GGC corruption.
        (cgraph_assemble_function): Kill next_needed to avoid GGC corruption.
        (cgraph_analyze_function): Do not intialize cloned_times and
        (cgraph_analyze_function): Do not intialize cloned_times and
        will_be_output.
        will_be_output.
        (cgraph_finalize_compilation_unit):  Clear next_needed.
        (cgraph_finalize_compilation_unit):  Clear next_needed.
        (cgraph_optimize_function): Kill.
        (cgraph_optimize_function): Kill.
        (cgraph_expand_function): Do not use cgraph_optimize_function.
        (cgraph_expand_function): Do not use cgraph_optimize_function.
        (cgraph_estimate_growth, cgraph_mark_inline,
        (cgraph_estimate_growth, cgraph_mark_inline,
        cgraph_check_inline_limits, cgraph_recursive_inlining_p,
        cgraph_check_inline_limits, cgraph_recursive_inlining_p,
        cgraph_preserve_function_body_p): Update for explicit clones.
        cgraph_preserve_function_body_p): Update for explicit clones.
        (INLINED_TIMES, SET_INLINED_TIMES, cgraph_inlined_into,
        (INLINED_TIMES, SET_INLINED_TIMES, cgraph_inlined_into,
        cgraph_inlined_callees, struct cgraph_inline_context,
        cgraph_inlined_callees, struct cgraph_inline_context,
        cgraph_create_inline_context, cgraph_free_inline_context,
        cgraph_create_inline_context, cgraph_free_inline_context,
        cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
        cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
        cgraph_inline_context_set_callee, cgraph_inline_context_clear_callee,
        cgraph_inline_context_set_callee, cgraph_inline_context_clear_callee,
        update_callee_keys): Kill.
        update_callee_keys): Kill.
        (cgraph_clone_inlined_nodes, cgraph_mark_inline_edge): New.
        (cgraph_clone_inlined_nodes, cgraph_mark_inline_edge): New.
        (cgraph_decide_inlining_of_small_functions, (cgraph_decide_inlining,
        (cgraph_decide_inlining_of_small_functions, (cgraph_decide_inlining,
        cgraph_decide_inlining_incrementally): Simplify.
        cgraph_decide_inlining_incrementally): Simplify.
        * tree-inline.c (typedef struct_inline_data): New field saving_p.
        * tree-inline.c (typedef struct_inline_data): New field saving_p.
        (copy_body_r): Update all clones.
        (copy_body_r): Update all clones.
        (expand_call_inline): Remove inlined cgraph node.
        (expand_call_inline): Remove inlined cgraph node.
        (save_body): Inicialize id.node and id.saving_p.
        (save_body): Inicialize id.node and id.saving_p.
        * tree-optimize.c (tree_rest_of_compilation): Maintain clone up-to-date
        * tree-optimize.c (tree_rest_of_compilation): Maintain clone up-to-date
        in no-unit-at-a-time mode.
        in no-unit-at-a-time mode.
2003-12-08  Steven Bosscher  
2003-12-08  Steven Bosscher  
        * tree-optimize.c (optimize_function_tree): Move verify_ssa calls
        * tree-optimize.c (optimize_function_tree): Move verify_ssa calls
        into conditionals.
        into conditionals.
2003-12-08  Daniel Berlin  
2003-12-08  Daniel Berlin  
        * tree-alias-ander.c (andersen_same_points_to_set): Fix memory leak.
        * tree-alias-ander.c (andersen_same_points_to_set): Fix memory leak.
2003-12-08  Jeff Law  
2003-12-08  Jeff Law  
        * tree-ssa-live.c (register_ssa_partition): Kill legacy code which
        * tree-ssa-live.c (register_ssa_partition): Kill legacy code which
        recursively called register_ssa_partition on PHI arguments when
        recursively called register_ssa_partition on PHI arguments when
        SSA_VAR was defined by a PHI_NODE.
        SSA_VAR was defined by a PHI_NODE.
2003-12-08  Jan Hubicka  
2003-12-08  Jan Hubicka  
        * tree-dump.c (dump_files): Fix ordering of tail call pass.
        * tree-dump.c (dump_files): Fix ordering of tail call pass.
        * tree.h (tree_dump_index): Likewise.
        * tree.h (tree_dump_index): Likewise.
2003-12-08  Zdenek Dvorak  
2003-12-08  Zdenek Dvorak  
        * Makefile.in (tree-cfg.o): Add gt-tree-cfg.h dependency.
        * Makefile.in (tree-cfg.o): Add gt-tree-cfg.h dependency.
        (GTFILES): Add tree-cfg.c.
        (GTFILES): Add tree-cfg.c.
        * tree-cfg.c: Include gt-tree-cfg.h.
        * tree-cfg.c: Include gt-tree-cfg.h.
        (factored_computed_goto_label, factored_computed_goto):
        (factored_computed_goto_label, factored_computed_goto):
        Mark gc roots.
        Mark gc roots.
2003-12-08  Steven Bosscher  
2003-12-08  Steven Bosscher  
            Jan Hubicka  
            Jan Hubicka  
        * gengtype-lex.l (IWOrD): Add HOST_WIDEST_INT
        * gengtype-lex.l (IWOrD): Add HOST_WIDEST_INT
        * Makefile.in (function.o, reg-stack.o): Add missing dependency on
        * Makefile.in (function.o, reg-stack.o): Add missing dependency on
        basic-block.h.
        basic-block.h.
        (GTFILES): Add basic-block.h and hwint.h.
        (GTFILES): Add basic-block.h and hwint.h.
        * basic-block.h (struct edge_def): Add GTY markers, make garbage
        * basic-block.h (struct edge_def): Add GTY markers, make garbage
        collectable.  Make `insns' field GC safe depending on the setting
        collectable.  Make `insns' field GC safe depending on the setting
        of cfg_hooks.
        of cfg_hooks.
        (struct basic_block_def): Add GTY markers, make garbage collectable.
        (struct basic_block_def): Add GTY markers, make garbage collectable.
        (tree_bb_root, tree_phi_root): Kill extern decls.
        (tree_bb_root, tree_phi_root): Kill extern decls.
        (ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Change from macro to variable
        (ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Change from macro to variable
        (entry_exit_blocks): Kill.
        (entry_exit_blocks): Kill.
        * cfg.c: Include ggc.h
        * cfg.c: Include ggc.h
        (bb_pool, edge_pool, entry_exit_blocks): Kill.
        (bb_pool, edge_pool, entry_exit_blocks): Kill.
        (ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Define.
        (ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Define.
        (init_flow): Do not create ppols; allocate entry/exit block.
        (init_flow): Do not create ppols; allocate entry/exit block.
        (free_edge, alloc_block, expunge_block, unchecked_make_edge): Use GGC.
        (free_edge, alloc_block, expunge_block, unchecked_make_edge): Use GGC.
        (compact_blocks): Don't update tree_bb_root and tree_phi_root.
        (compact_blocks): Don't update tree_bb_root and tree_phi_root.
        * cfgrtl.c (rtl_merge_blocks): Clear head pointer.
        * cfgrtl.c (rtl_merge_blocks): Clear head pointer.
        * regs.h: Protect against multiple inclusion.
        * regs.h: Protect against multiple inclusion.
        * tree-cfg.c (obstack_tree_ann_obstack, first_block_tree_and_obj,
        * tree-cfg.c (obstack_tree_ann_obstack, first_block_tree_and_obj,
        tree_bb_root): Kill.
        tree_bb_root): Kill.
        (build_tree_cfg, create_bb, remove_bb, delete_tree_cfg): Don't
        (build_tree_cfg, create_bb, remove_bb, delete_tree_cfg): Don't
        touch tree_bb_root and tree_phi_root.
        touch tree_bb_root and tree_phi_root.
        (create_block_annotations): Do not initialize obstack.
        (create_block_annotations): Do not initialize obstack.
        (free_block_annotations): Do not free obstack.
        (free_block_annotations): Do not free obstack.
        (create_block_annotation): Use GGC.
        (create_block_annotation): Use GGC.
        * tree-dfa.c (tree_phi_root): Kill.
        * tree-dfa.c (tree_phi_root): Kill.
        * tree-flow.h (bb_ann, bb_ann_d): Declare.  Add `phi_nodes' field.
        * tree-flow.h (bb_ann, bb_ann_d): Declare.  Add `phi_nodes' field.
        * tree-phinodes.c (create_phi_node, add_phi_arg, remove_phi_node,
        * tree-phinodes.c (create_phi_node, add_phi_arg, remove_phi_node,
        remove_all_phi_nodes_for): Use `phi_nodes' field in the bb
        remove_all_phi_nodes_for): Use `phi_nodes' field in the bb
        annotation instead of tree_phi_root.
        annotation instead of tree_phi_root.
        * tree-flow-inline.h (phi_nodes, set_phi_nodes): Likewise.
        * tree-flow-inline.h (phi_nodes, set_phi_nodes): Likewise.
        (add_dom_child, clear_dom_children): Use GGC.
        (add_dom_child, clear_dom_children): Use GGC.
        * tree-ssa-pre.c (code_motion): Use `phi_nodes' field in the bb
        * tree-ssa-pre.c (code_motion): Use `phi_nodes' field in the bb
        annotation instead of tree_phi_root.
        annotation instead of tree_phi_root.
        * varray.h (union varray_data): Make basic_block_def and edge_def
        * varray.h (union varray_data): Make basic_block_def and edge_def
        varrays garbage collectable.
        varrays garbage collectable.
2003-12-07  Richard Henderson  
2003-12-07  Richard Henderson  
        * c-common.c (c_address_looks_like_offsetof): New.
        * c-common.c (c_address_looks_like_offsetof): New.
        * c-common.h (c_address_looks_like_offsetof): Declare.
        * c-common.h (c_address_looks_like_offsetof): Declare.
        * c-typeck.c (build_unary_op) : Use it.  Don't lower
        * c-typeck.c (build_unary_op) : Use it.  Don't lower
        address references not destined for offsetof.
        address references not destined for offsetof.
        (c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
        (c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
        when looking for returning address of local variable.
        when looking for returning address of local variable.
        * expr.c (expand_expr_1): Don't dereference size of unbounded arrays.
        * expr.c (expand_expr_1): Don't dereference size of unbounded arrays.
        * gimplify.c (gimplify_addr_expr): Only fold address of variable size
        * gimplify.c (gimplify_addr_expr): Only fold address of variable size
        array elements.
        array elements.
        * tree-simple.c (is_gimple_min_invariant): Also check
        * tree-simple.c (is_gimple_min_invariant): Also check
        is_gimple_variable before disallowing offset address for type.
        is_gimple_variable before disallowing offset address for type.
        * tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
        * tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
        (maybe_fold_offset_to_component_ref): Use it.
        (maybe_fold_offset_to_component_ref): Use it.
        (maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
        (maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
        (maybe_fold_offset_to_array_ref): Likewise.  Don't fail for division
        (maybe_fold_offset_to_array_ref): Likewise.  Don't fail for division
        remainder non-zero.
        remainder non-zero.
        * varasm.c (initializer_constant_valid_p) : Use
        * varasm.c (initializer_constant_valid_p) : Use
        handled_component_p and look inside references.
        handled_component_p and look inside references.
        : Always look past widening casts.
        : Always look past widening casts.
2003-12-07  Zdenek Dvorak  
2003-12-07  Zdenek Dvorak  
        * tree-cfg.c (compute_dominance_frontiers): Don't assume that
        * tree-cfg.c (compute_dominance_frontiers): Don't assume that
        the first block has index 0.
        the first block has index 0.
2003-12-07  Jan Hubicka  
2003-12-07  Jan Hubicka  
        * cgraph.c (create_edge): Rename to ...
        * cgraph.c (create_edge): Rename to ...
        (cgraph_create_edge): ... this one; accept call_expr as operand.
        (cgraph_create_edge): ... this one; accept call_expr as operand.
        (cgraph_edge): New function
        (cgraph_edge): New function
        (cgraph_remove_edge): Use edge as argument
        (cgraph_remove_edge): Use edge as argument
        (cgraph_record_call, cgraph_remove_call): Kill.
        (cgraph_record_call, cgraph_remove_call): Kill.
        (clone_cgraphedge): New function.
        (clone_cgraphedge): New function.
        * cgraph.h (cgraph_edge): Add call_expr argument; add chain_next.
        * cgraph.h (cgraph_edge): Add call_expr argument; add chain_next.
        (cgraph_record_call, cgraph_remove_call): Kill prototype.
        (cgraph_record_call, cgraph_remove_call): Kill prototype.
        (cgraph_remove_call, cgraph_inline_p): Update prototype.
        (cgraph_remove_call, cgraph_inline_p): Update prototype.
        (cgraph_clone_edge): Declare.
        (cgraph_clone_edge): Declare.
        * cgraphunit.c (cgraph_finalize_function): Update use of
        * cgraphunit.c (cgraph_finalize_function): Update use of
        cgraph_remove_edge
        cgraph_remove_edge
        (record_call_1): Use cgraph_create_edge; record builtins too.
        (record_call_1): Use cgraph_create_edge; record builtins too.
        (cgraph_create_edges): Accept node instead of decl.
        (cgraph_create_edges): Accept node instead of decl.
        (cgraph_analyze_function): Update use cgraph_create_edges.
        (cgraph_analyze_function): Update use cgraph_create_edges.
        (cgraph_inline_p): Accept edge.
        (cgraph_inline_p): Accept edge.
        * tree-inline.c (inline_data): Replace decl and current_decl
        * tree-inline.c (inline_data): Replace decl and current_decl
        by node and current_node.
        by node and current_node.
        (copy_body_r): Clone edges.
        (copy_body_r): Clone edges.
        (expand_call_inline): Do not create inlined edges.
        (expand_call_inline): Do not create inlined edges.
        (optimize_inline_call): Set id->current_node, id->node.
        (optimize_inline_call): Set id->current_node, id->node.
        * tree-optimize.c (tree_rest_of_compilation): Update cgraph edges after
        * tree-optimize.c (tree_rest_of_compilation): Update cgraph edges after
        compiling.
        compiling.
2003-12-07  Diego Novillo  
2003-12-07  Diego Novillo  
        * tree-ssa-loop.c (dump_file, dump_flags): Only declare with
        * tree-ssa-loop.c (dump_file, dump_flags): Only declare with
        checking enabled.
        checking enabled.
        (tree_ssa_loop_opt): Mark arguments with ATTRIBUTE_UNUSED.
        (tree_ssa_loop_opt): Mark arguments with ATTRIBUTE_UNUSED.
2003-12-07  Richard Henderson  
2003-12-07  Richard Henderson  
        * function.h (struct function): Add last_label_uid.
        * function.h (struct function): Add last_label_uid.
        * tree-cfg.c (set_bb_for_stmt): Use it.
        * tree-cfg.c (set_bb_for_stmt): Use it.
        (delete_tree_cfg): Clear label_to_block_map.
        (delete_tree_cfg): Clear label_to_block_map.
        * gimple-low.c (lower_stmt_body): Export.
        * gimple-low.c (lower_stmt_body): Export.
        (lower_stmt): Allow data to be null.
        (lower_stmt): Allow data to be null.
        * gimplify.c (declare_tmp_vars): Make static.
        * gimplify.c (declare_tmp_vars): Make static.
        (push_gimplify_context): Export.
        (push_gimplify_context): Export.
        (pop_gimplify_context): Export.  Put the temps somewhere.
        (pop_gimplify_context): Export.  Put the temps somewhere.
        (gimplify_body): Don't declare_tmp_vars here.
        (gimplify_body): Don't declare_tmp_vars here.
        * tree-flow.h, tree-simple.h: Update for new decls.
        * tree-flow.h, tree-simple.h: Update for new decls.
        * tree-mudflap.c (mf_build_string): New.
        * tree-mudflap.c (mf_build_string): New.
        (mudflap_c_function_decls): Push and pop gimplify context, don't
        (mudflap_c_function_decls): Push and pop gimplify context, don't
        gimplify here.  Dump pass 1.
        gimplify here.  Dump pass 1.
        (mudflap_c_function_ops): Similarly.
        (mudflap_c_function_ops): Similarly.
        (mf_decl_cache_locals): Gimplify eveything as we go along.
        (mf_decl_cache_locals): Gimplify eveything as we go along.
        (mf_build_check_statement_for): Likewise.
        (mf_build_check_statement_for): Likewise.
        (mf_mostly_copy_tree_r): Remove.
        (mf_mostly_copy_tree_r): Remove.
        (mf_varname_tree): Use mf_build_string.
        (mf_varname_tree): Use mf_build_string.
        (mf_file_function_line_tree): Rewrite.
        (mf_file_function_line_tree): Rewrite.
        (mf_offset_expr_of_array_ref): Remove.
        (mf_offset_expr_of_array_ref): Remove.
        (mx_xfn_indirect_ref): Remove.
        (mx_xfn_indirect_ref): Remove.
        (mf_xform_derefs_1): New.
        (mf_xform_derefs_1): New.
        (mf_xform_derefs): Rewrite to expect gimple.
        (mf_xform_derefs): Rewrite to expect gimple.
        (mx_register_decls): Use build_function_call_expr.
        (mx_register_decls): Use build_function_call_expr.
        (mudflap_enqueue_constant): Use mf_build_string.
        (mudflap_enqueue_constant): Use mf_build_string.
        * tree-optimize.c (tree_rest_of_compilation): Reorder mudflap bits.
        * tree-optimize.c (tree_rest_of_compilation): Reorder mudflap bits.
        * tree-dump.c (dump_files): Split mudflap to parts 1 and 2.
        * tree-dump.c (dump_files): Split mudflap to parts 1 and 2.
        * tree.h (enum tree_dump_index): Likewise.
        * tree.h (enum tree_dump_index): Likewise.
2003-12-06  Zdenek Dvorak  
2003-12-06  Zdenek Dvorak  
        * tree-ssa-loop.c: New.
        * tree-ssa-loop.c: New.
        * Makefile.in (tree-ssa-loop.o): New.
        * Makefile.in (tree-ssa-loop.o): New.
        * common.opt (ftree-loop-optimize): Add.
        * common.opt (ftree-loop-optimize): Add.
        * flags.h (flag_tree_loop): Declare.
        * flags.h (flag_tree_loop): Declare.
        * opts.c (decode_options): Enable flag_tree_loop at -O1.
        * opts.c (decode_options): Enable flag_tree_loop at -O1.
        (common_handle_option): Handle OPT_ftree_loop_optimize.
        (common_handle_option): Handle OPT_ftree_loop_optimize.
        * timevar.def (TV_TREE_LOOP): New.
        * timevar.def (TV_TREE_LOOP): New.
        * toplev.c (flag_tree_loop): New.
        * toplev.c (flag_tree_loop): New.
        (f_options): Add -ftree-loop-optimize.
        (f_options): Add -ftree-loop-optimize.
        * tree-cfg.c (build_tree_cfg): Remove disabled loop optimizer
        * tree-cfg.c (build_tree_cfg): Remove disabled loop optimizer
        initialization.
        initialization.
        (tree_make_forwarder_block): Update phi nodes.
        (tree_make_forwarder_block): Update phi nodes.
        (tree_loop_optimizer_init): Don't call force_single_succ_latches.
        (tree_loop_optimizer_init): Don't call force_single_succ_latches.
        (tree_try_redirect_by_replacing_jump): Comment fix.
        (tree_try_redirect_by_replacing_jump): Comment fix.
        * tree-dump.c (dump_files): Add .loop dump.
        * tree-dump.c (dump_files): Add .loop dump.
        * tree-flow.h (tree_ssa_loop_opt, set_phi_nodes): Declare.
        * tree-flow.h (tree_ssa_loop_opt, set_phi_nodes): Declare.
        * tree-optimize.c (optimize_function_tree): Call tree_ssa_loop_opt.
        * tree-optimize.c (optimize_function_tree): Call tree_ssa_loop_opt.
        * tree.h (enum tree_dump_index): Add TDI_loop.
        * tree.h (enum tree_dump_index): Add TDI_loop.
        * tree-flow-inline.h (set_phi_nodes): New.
        * tree-flow-inline.h (set_phi_nodes): New.
        * doc/invoke.texi (-fdump-tree-loop, -ftree-loop-optimize): Document.
        * doc/invoke.texi (-fdump-tree-loop, -ftree-loop-optimize): Document.
2003-12-05  Jeff Law  
2003-12-05  Jeff Law  
        * tree-dfa.c (mark_new_vars_to_rename): Change VARS_TO_RENAME to be
        * tree-dfa.c (mark_new_vars_to_rename): Change VARS_TO_RENAME to be
        a "bitmap" instead of an "sbitmap".  Callers updated.
        a "bitmap" instead of an "sbitmap".  Callers updated.
        * tree-must-alias.c (promote_var): Likewise.
        * tree-must-alias.c (promote_var): Likewise.
        (tree_compute_must_alias): Likewise.
        (tree_compute_must_alias): Likewise.
        * tree-phinodes.c (remove_all_phi_nodes_for): Likewise.
        * tree-phinodes.c (remove_all_phi_nodes_for): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_thread_jumps): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_thread_jumps): Likewise.
        (tree_ssa_dominator_optimize): Likewise.
        (tree_ssa_dominator_optimize): Likewise.
        (tree_ssa_dominator_optimize_1): Likewise.
        (tree_ssa_dominator_optimize_1): Likewise.
        * tree-ssa-pre.c (pre_expression): Likewise.
        * tree-ssa-pre.c (pre_expression): Likewise.
        (tree_perform_ssapre): Likewise.
        (tree_perform_ssapre): Likewise.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        (insert_phi_nodes): If VARS_TO_RENAME is zero, then examine
        (insert_phi_nodes): If VARS_TO_RENAME is zero, then examine
        each node to determine if we need to insert a PHI.
        each node to determine if we need to insert a PHI.
        (prepare_operand_for_rename): If VARS_TO_RENAME is zero, then
        (prepare_operand_for_rename): If VARS_TO_RENAME is zero, then
        assume the operand needs renaming.
        assume the operand needs renaming.
        * tree-ssa-ccp.c (substitute_and_fold): Change VARS_TO_RENAME to
        * tree-ssa-ccp.c (substitute_and_fold): Change VARS_TO_RENAME to
        be a "bitmap" instead of an "sbitmap".  Callers updated.
        be a "bitmap" instead of an "sbitmap".  Callers updated.
        (tree_ssa_ccp): Likewise.  Also make sure timevar_pop encloses
        (tree_ssa_ccp): Likewise.  Also make sure timevar_pop encloses
        entire function.
        entire function.
        (scalarize_modify_expr): Likewise.
        (scalarize_modify_expr): Likewise.
        * tree-sra.c (create_scalar_copies): Change VARS_TO_RENAME to
        * tree-sra.c (create_scalar_copies): Change VARS_TO_RENAME to
        be a "bitmap" instead of an "sbitmap".  Callers updated.
        be a "bitmap" instead of an "sbitmap".  Callers updated.
        (tree_sra): Likewise.
        (tree_sra): Likewise.
        * tree-optimize.c (optimize_function_tree): Make VARS_TO_RENAME
        * tree-optimize.c (optimize_function_tree): Make VARS_TO_RENAME
        be a "bitmap" instead of an "sbitmap".
        be a "bitmap" instead of an "sbitmap".
        * tree-flow.h: Update various prototypes.
        * tree-flow.h: Update various prototypes.
2003-12-05  Zdenek Dvorak  
2003-12-05  Zdenek Dvorak  
        * tree-cfg.c (remove_useless_stmts_goto, remove_useless_stmts): Move
        * tree-cfg.c (remove_useless_stmts_goto, remove_useless_stmts): Move
        handling of factored_computed_goto ...
        handling of factored_computed_goto ...
        (disband_implicit_edges): ... here.
        (disband_implicit_edges): ... here.
2003-12-05  Jan Hubicka  
2003-12-05  Jan Hubicka  
        * tree-eh.c (tree_could_trap_p): Fix warning.
        * tree-eh.c (tree_could_trap_p): Fix warning.
        * expr.c (expand_expr): Fix warning on uninitialized last.
        * expr.c (expand_expr): Fix warning on uninitialized last.
2003-12-04  Jeff Law  
2003-12-04  Jeff Law  
        * tree-ssa.c (rewrite_trees): Do not unconditionally overwrite
        * tree-ssa.c (rewrite_trees): Do not unconditionally overwrite
        variables set by statements.  Let replace_variable do any
        variables set by statements.  Let replace_variable do any
        required rewriting.
        required rewriting.
2003-12-04  Richard Henderson  
2003-12-04  Richard Henderson  
        * c-parse.in (primary): Use annotate_with_locus instead of
        * c-parse.in (primary): Use annotate_with_locus instead of
        STMT_LINENO for STMT_EXPR.
        STMT_LINENO for STMT_EXPR.
        * c-simplify.c (gimplify_stmt_expr): Likewise.
        * c-simplify.c (gimplify_stmt_expr): Likewise.
2003-12-04  Jan Hubicka  
2003-12-04  Jan Hubicka  
        * tree-dump.c (dump_files): Reorder tailcall and mustalias
        * tree-dump.c (dump_files): Reorder tailcall and mustalias
        * tree.h (tree_dump_index): Likewise.
        * tree.h (tree_dump_index): Likewise.
        * tree-optimize.c (optimize_function_tree): Do tail call after mustalias.
        * tree-optimize.c (optimize_function_tree): Do tail call after mustalias.
2003-12-04  Diego Novillo  
2003-12-04  Diego Novillo  
        * tree-dfa.c (opf_none, opf_is_def, opf_no_vops): Change to #define.
        * tree-dfa.c (opf_none, opf_is_def, opf_no_vops): Change to #define.
2003-12-04  Canqun Yang  
2003-12-04  Canqun Yang  
        * stor-layout.c (update_alignment_for_field): Export.
        * stor-layout.c (update_alignment_for_field): Export.
        * tree.h (update_alignment_for_field): Declare.
        * tree.h (update_alignment_for_field): Declare.
2003-12-03  Andrew Haley  
2003-12-03  Andrew Haley  
        * tree-eh.c (tree_could_trap_p): Add division instructions.
        * tree-eh.c (tree_could_trap_p): Add division instructions.
        * expr.c (expand_expr): Check the EH region of an expression and
        * expr.c (expand_expr): Check the EH region of an expression and
        mark all the insns that result from its expansion with the
        mark all the insns that result from its expansion with the
        appropriate REG_EH_REGION.
        appropriate REG_EH_REGION.
2003-12-03  Jan Hubicka  
2003-12-03  Jan Hubicka  
        * tree-cfg.c (verify_addr_expr, verify_stmt, tree_node_shared_p,
        * tree-cfg.c (verify_addr_expr, verify_stmt, tree_node_shared_p,
        verify_stmts):  New functions.
        verify_stmts):  New functions.
        (verify_flow_info): Remove PHI checking code.
        (verify_flow_info): Remove PHI checking code.
        * tree-flow.h (verify_stmt, verify_stmts): Declare.
        * tree-flow.h (verify_stmt, verify_stmts): Declare.
        * tree-inline.h (walk_tree, walk_tree_without_duplicates): Move
        * tree-inline.h (walk_tree, walk_tree_without_duplicates): Move
        prototypes ...
        prototypes ...
        * tree.h (walk_tree, walk_tree_without_duplicates): ... here.
        * tree.h (walk_tree, walk_tree_without_duplicates): ... here.
2003-12-03  Jan Hubicka  
2003-12-03  Jan Hubicka  
            Diego Novillo 
            Diego Novillo 
        * tree-ssa.c (verify_def, verify_use, verify_phi_args): New static
        * tree-ssa.c (verify_def, verify_use, verify_phi_args): New static
        functions.
        functions.
        (verify_ssa): New global function.
        (verify_ssa): New global function.
        * tree-flow.h (verify_ssa): Declare.
        * tree-flow.h (verify_ssa): Declare.
        * tree-optimize.c (optimize_function_tree): Call it.
        * tree-optimize.c (optimize_function_tree): Call it.
2003-12-03  Diego Novillo  
2003-12-03  Diego Novillo  
        * timevar.def (TV_TREE_SSA_VERIFY): New timer.
        * timevar.def (TV_TREE_SSA_VERIFY): New timer.
        * tree-sra.c (create_scalar_copies): Always mark the previous
        * tree-sra.c (create_scalar_copies): Always mark the previous
        variables on the LHS for renaming.
        variables on the LHS for renaming.
        Do not emit unnecessary assignments from VA_ARG_EXPRs.
        Do not emit unnecessary assignments from VA_ARG_EXPRs.
        (scalarize_modify_expr): Similarly, when scalarizing the LHS of a
        (scalarize_modify_expr): Similarly, when scalarizing the LHS of a
        COMPONENT_REF assignment.
        COMPONENT_REF assignment.
        * tree-must-alias.c (tree_compute_must_alias): Do not promote
        * tree-must-alias.c (tree_compute_must_alias): Do not promote
        variables with hidden uses.
        variables with hidden uses.
        * tree-ssa-ccp.c (set_rhs): When replacing the whole statement, reset
        * tree-ssa-ccp.c (set_rhs): When replacing the whole statement, reset
        SSA_NAME_DEF_STMT for all the SSA_NAMEs in vdef and def
        SSA_NAME_DEF_STMT for all the SSA_NAMEs in vdef and def
        operands.
        operands.
2003-12-03  Zdenek Dvorak  
2003-12-03  Zdenek Dvorak  
            Diego Novillo  
            Diego Novillo  
        * tree-dfa.c (opf_no_vops): New.
        * tree-dfa.c (opf_no_vops): New.
        (add_stmt_operand): Don't create virtual operands when opf_no_vops
        (add_stmt_operand): Don't create virtual operands when opf_no_vops
        is passed in flags.
        is passed in flags.
        (get_expr_operands): Set opf_no_vops flag before diving into the
        (get_expr_operands): Set opf_no_vops flag before diving into the
        operand of an ADDR_EXPR node.
        operand of an ADDR_EXPR node.
2003-12-03  Richard Henderson  
2003-12-03  Richard Henderson  
        * tree-simple.c (is_gimple_min_invariant): Disallow offset of
        * tree-simple.c (is_gimple_min_invariant): Disallow offset of
        address of a scalar.
        address of a scalar.
        * c-parse.in (primary): Set STMT_LINENO on STMT_EXPR.
        * c-parse.in (primary): Set STMT_LINENO on STMT_EXPR.
        * c-simplify.c (gimplify_stmt_expr): Be prepared for last_stmt
        * c-simplify.c (gimplify_stmt_expr): Be prepared for last_stmt
        to be null.
        to be null.
2003-12-03  Daniel Berlin  
2003-12-03  Daniel Berlin  
        Fix PR 13177
        Fix PR 13177
        * tree-ssa-pre.c (code_motion): Do phi nodes last, and rearrange
        * tree-ssa-pre.c (code_motion): Do phi nodes last, and rearrange
        how we decide what temporary to choose so that we get it right.
        how we decide what temporary to choose so that we get it right.
2003-12-03  Zdenek Dvorak  
2003-12-03  Zdenek Dvorak  
        * tree-dfa.c (get_expr_operands): Don't record VUSEs for invariant
        * tree-dfa.c (get_expr_operands): Don't record VUSEs for invariant
        adresses.
        adresses.
2003-12-03  Brian Booth  
2003-12-03  Brian Booth  
        * tree-pretty-print.c (dump_phi_nodes): Removed superfluous ampersand.
        * tree-pretty-print.c (dump_phi_nodes): Removed superfluous ampersand.
2003-12-03  Jeff Law  
2003-12-03  Jeff Law  
        * ggc-page.c: Resync with mainline sources.  Remove tree-ssa
        * ggc-page.c: Resync with mainline sources.  Remove tree-ssa
        specific hack which disabled special GC pagesizes for 2 operand
        specific hack which disabled special GC pagesizes for 2 operand
        tree expressions.
        tree expressions.
        * tree-ssa.c (mark_def_sites): Call prepare_operand_for_rename
        * tree-ssa.c (mark_def_sites): Call prepare_operand_for_rename
        on the VDEF_RESULT as well, providing a dummy uid argument.
        on the VDEF_RESULT as well, providing a dummy uid argument.
        * tree-phinodes.c: Include rtl.h for ceil_log2.
        * tree-phinodes.c: Include rtl.h for ceil_log2.
        (ideal_phi_node_len): New function.
        (ideal_phi_node_len): New function.
        (resize_phi_node): Make static.
        (resize_phi_node): Make static.
        (make_phi_node): Use ideal_phi_node_len.
        (make_phi_node): Use ideal_phi_node_len.
        (add_phi_arg): Likewise.
        (add_phi_arg): Likewise.
        * tree.h (resize_phi_node): Remove prototype.
        * tree.h (resize_phi_node): Remove prototype.
        * Makefile.in (tree-phinodes.o): Depend on $(RTL_H).
        * Makefile.in (tree-phinodes.o): Depend on $(RTL_H).
2003-12-03  Zdenek Dvorak  
2003-12-03  Zdenek Dvorak  
        * tree-cfg.c: (make_edges): Eliminate fallthru to exit.
        * tree-cfg.c: (make_edges): Eliminate fallthru to exit.
        (make_ctrl_stmt_edges): Nonlocal goto handling moved to
        (make_ctrl_stmt_edges): Nonlocal goto handling moved to
        make_goto_expr_edges.
        make_goto_expr_edges.
        (make_goto_expr_edges): Remove simple gotos.
        (make_goto_expr_edges): Remove simple gotos.
        (cfg_remove_useless_stmts_bb): Goto removal cancelled.
        (cfg_remove_useless_stmts_bb): Goto removal cancelled.
        (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        Replaced by ...
        Replaced by ...
        (cleanup_control_expr_graph): New.
        (cleanup_control_expr_graph): New.
        (cleanup_control_flow): Use it.
        (cleanup_control_flow): Use it.
        (disband_implicit_edges): New.
        (disband_implicit_edges): New.
        (tree_find_edge_insert_loc): Never insert before a control statement.
        (tree_find_edge_insert_loc): Never insert before a control statement.
        (tree_split_edge, thread_jumps, tree_try_redirect_by_replacing_jump,
        (tree_split_edge, thread_jumps, tree_try_redirect_by_replacing_jump,
        tree_redirect_edge_and_branch): Work over no-gotos form.
        tree_redirect_edge_and_branch): Work over no-gotos form.
        (tree_verify_flow_info): Check no-gotos form invariants.
        (tree_verify_flow_info): Check no-gotos form invariants.
        * tree-pretty-print.c (pp_cfg_jump, dump_implicit_edges): New.
        * tree-pretty-print.c (pp_cfg_jump, dump_implicit_edges): New.
        (dump_generic_bb_buff): Call dump_implicit_edges.
        (dump_generic_bb_buff): Call dump_implicit_edges.
        * tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        * tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        Declaration removed.
        Declaration removed.
        (cleanup_control_expr_graph, delete_tree_ssa, disband_implicit_edges):
        (cleanup_control_expr_graph, delete_tree_ssa, disband_implicit_edges):
        Declare.
        Declare.
        * tree-optimize.c (tree_ssa_finish): New.
        * tree-optimize.c (tree_ssa_finish): New.
        (optimize_function_tree): Call it.
        (optimize_function_tree): Call it.
        * tree-ssa-dom.c (thread_jumps_walk_stmts, optimize_stmt): Use
        * tree-ssa-dom.c (thread_jumps_walk_stmts, optimize_stmt): Use
        cleanup_control_expr_graph.
        cleanup_control_expr_graph.
        * tree-ssa.c (delete_tree_ssa): Export, work even if there are no
        * tree-ssa.c (delete_tree_ssa): Export, work even if there are no
        referenced_vars.
        referenced_vars.
        (rewrite_out_of_ssa): Don't call it.
        (rewrite_out_of_ssa): Don't call it.
2003-12-03  Jan Hubicka  
2003-12-03  Jan Hubicka  
        * tree-ssa.dom.c (tree_ssa_domionator_thread_jumps): Mark back edges.
        * tree-ssa.dom.c (tree_ssa_domionator_thread_jumps): Mark back edges.
        (thread_across_edge): Do not thread across loop headers.
        (thread_across_edge): Do not thread across loop headers.
        * Makefile.in (tree-optimize.o): Depend on cgraph.h
        * Makefile.in (tree-optimize.o): Depend on cgraph.h
        * cgraph.h (cgraph_preserve_function_body_p): Declare.
        * cgraph.h (cgraph_preserve_function_body_p): Declare.
        * cgraphunit.c (cgraph_preserve_function_body_p): New function.
        * cgraphunit.c (cgraph_preserve_function_body_p): New function.
        * tree-optimize.c: Include cgraph.h
        * tree-optimize.c: Include cgraph.h
        (clear_decl_rtl): Kill.
        (clear_decl_rtl): Kill.
        (tree_rest_of_compilation): Use cgraph_preserve_function_body_p;
        (tree_rest_of_compilation): Use cgraph_preserve_function_body_p;
        do not clear DECL_RTL; do final ggc in the pushed context for nested
        do not clear DECL_RTL; do final ggc in the pushed context for nested
        functions;
        functions;
2003-12-02  Jeff Law  
2003-12-02  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Accept and pass down dominator
        * tree-ssa-dom.c (optimize_stmt): Accept and pass down dominator
        walker structure instead of individual varrays.  Callers updated.
        walker structure instead of individual varrays.  Callers updated.
        (eliminate_redundant_computations): Likewise.
        (eliminate_redundant_computations): Likewise.
        (simplify_rhs_and_lookup_avail_expr): Likewise.  Cache and update
        (simplify_rhs_and_lookup_avail_expr): Likewise.  Cache and update
        a dummy COND_EXPR when querying the hash tables when transforming
        a dummy COND_EXPR when querying the hash tables when transforming
        DIV/MOD into RSHIFT/BIT_AND or ABS_EXPR into NEG_EXPR.
        DIV/MOD into RSHIFT/BIT_AND or ABS_EXPR into NEG_EXPR.
        (dom_opt_walk_stmts): Don't reload the block data pointer each
        (dom_opt_walk_stmts): Don't reload the block data pointer each
        iteration of the loop.  Load it once outside the loop.
        iteration of the loop.  Load it once outside the loop.
        * tree-dfa.c (cleanup_operand_arrays): Avoid creating a new
        * tree-dfa.c (cleanup_operand_arrays): Avoid creating a new
        varray for the vuse operands.
        varray for the vuse operands.
        * tree-ssa-dom.c (extract_range_from_cond): Use int_const_binop to
        * tree-ssa-dom.c (extract_range_from_cond): Use int_const_binop to
        avoid creating useless tree nodes.
        avoid creating useless tree nodes.
        * tree-phinodes.c (add_phi_arg): If we receive a new node from
        * tree-phinodes.c (add_phi_arg): If we receive a new node from
        resize_phi_node, then release the old node and update the PHI
        resize_phi_node, then release the old node and update the PHI
        chain.
        chain.
2003-12-02  Brian Booth  
2003-12-02  Brian Booth  
        * tree-pretty-print.c (dump_phi_nodes): Added code to always show phi
        * tree-pretty-print.c (dump_phi_nodes): Added code to always show phi
        nodes of regular gimple scalars.
        nodes of regular gimple scalars.
        (dump_generic_bb_buff): Removed condition upon which to show phi nodes.
        (dump_generic_bb_buff): Removed condition upon which to show phi nodes.
2003-12-02  Jan Hubicka  
2003-12-02  Jan Hubicka  
        * tree-optimize.c (optimize_function_tree): Invoke ggc_collect in
        * tree-optimize.c (optimize_function_tree): Invoke ggc_collect in
        between optimization passes.
        between optimization passes.
2003-12-02  Daniel Berlin  
2003-12-02  Daniel Berlin  
        * tree-sra.c (can_be_scalarized_p): Print details about why something
        * tree-sra.c (can_be_scalarized_p): Print details about why something
        could not be scalarized to the dump file.
        could not be scalarized to the dump file.
2003-12-01  Jeff Law  
2003-12-01  Jeff Law  
        * Makefile.in (OBJS-common): Add tree-phinodes.o.
        * Makefile.in (OBJS-common): Add tree-phinodes.o.
        (tree-phinodes.o): Add dependencies.
        (tree-phinodes.o): Add dependencies.
        (GTFILES): Add tree-phinodes.c.
        (GTFILES): Add tree-phinodes.c.
        * tree-phinodes.c: New file.
        * tree-phinodes.c: New file.
        * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
        * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
        (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
        (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
        (remove_phi_node, remove_all_phi_nodes_for): Similarly.
        (remove_phi_node, remove_all_phi_nodes_for): Similarly.
        * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
        * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
        (delete_tree_ssa): Finalize PHI node management.
        (delete_tree_ssa): Finalize PHI node management.
        * tree.c (dump_tree_statistics): Dump PHI node stats.
        * tree.c (dump_tree_statistics): Dump PHI node stats.
        (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
        (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
        * tree.h (init_phinodes): Prototype.
        * tree.h (init_phinodes): Prototype.
        (fini_phinodes, release_phi_node): Likewise.
        (fini_phinodes, release_phi_node): Likewise.
        (phinodes_print_statistics): Likewise.
        (phinodes_print_statistics): Likewise.
2003-12-01  Richard Henderson  
2003-12-01  Richard Henderson  
        * tree-dfa.c (get_expr_operands): Don't handle PLUS_EXPR inside
        * tree-dfa.c (get_expr_operands): Don't handle PLUS_EXPR inside
        INDIRECT_REF.
        INDIRECT_REF.
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Use int_const_binop.
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Use int_const_binop.
        (maybe_fold_offset_to_component_ref): Likewise.
        (maybe_fold_offset_to_component_ref): Likewise.
        (maybe_fold_stmt_indirect): Likewise.
        (maybe_fold_stmt_indirect): Likewise.
        (maybe_fold_stmt_plus): Expand ARRAY_REF when seen with addend.
        (maybe_fold_stmt_plus): Expand ARRAY_REF when seen with addend.
        * fold-const.c (int_const_binop): Export.
        * fold-const.c (int_const_binop): Export.
        * tree.h (int_const_binop): Declare.
        * tree.h (int_const_binop): Declare.
2003-12-01  Jan Hubicka  
2003-12-01  Jan Hubicka  
        * basic-block.h (tree_phi_root): New variable.
        * basic-block.h (tree_phi_root): New variable.
        * cfg.c: Include tree-flow.h.
        * cfg.c: Include tree-flow.h.
        (compact_blocks): Compact tree_phi_root
        (compact_blocks): Compact tree_phi_root
        * tree-cfg.c (build_tree_cfg): Initialize tree_phi_root.
        * tree-cfg.c (build_tree_cfg): Initialize tree_phi_root.
        (create_bb, remove_bb, delete_tree_cfg): Update tree_phi_root.
        (create_bb, remove_bb, delete_tree_cfg): Update tree_phi_root.
        * tree-dfa.c (tree_phi_root): Declare.
        * tree-dfa.c (tree_phi_root): Declare.
        (create_phi_node, add_phi_arg, remove_phi_node,
        (create_phi_node, add_phi_arg, remove_phi_node,
        remove_all_phi_nodes_for):  Always use accessor functions for
        remove_all_phi_nodes_for):  Always use accessor functions for
        getting, varray for setting phis.
        getting, varray for setting phis.
        * tree-ssa-pre.c (code_motion): Likewsie.
        * tree-ssa-pre.c (code_motion): Likewsie.
        * tree-flow-inline.h (phi_nodes): Use varray.
        * tree-flow-inline.h (phi_nodes): Use varray.
        * tree-flow.h (bb_ann_d): Remove phi_nodes.
        * tree-flow.h (bb_ann_d): Remove phi_nodes.
        * tree-ssanames.c (free_ssanames): Do not use deleteable GTY flag.
        * tree-ssanames.c (free_ssanames): Do not use deleteable GTY flag.
2003-11-30  Jan Hubicka  
2003-11-30  Jan Hubicka  
        * tree-optimize.c (tree_rest_of_compilation): Move ggc_collect call to
        * tree-optimize.c (tree_rest_of_compilation): Move ggc_collect call to
        the end of function; keep clearing of DECL_SAVED_TREE to the cgraph
        the end of function; keep clearing of DECL_SAVED_TREE to the cgraph
        code.
        code.
2003-11-30  Jan Hubicka  
2003-11-30  Jan Hubicka  
        * cgraphunit.c (cgraph_inline_context): New structure.
        * cgraphunit.c (cgraph_inline_context): New structure.
        (cgrpah_mark_inline, cgraph_check_inline_limits): Use context
        (cgrpah_mark_inline, cgraph_check_inline_limits): Use context
        instead of passing all arguments by hand.
        instead of passing all arguments by hand.
        (cgraph_create_inline_context, cgraph_free_inline_context,
        (cgraph_create_inline_context, cgraph_free_inline_context,
        cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
        cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
        cgraph_inline_context_set_callee, cgrpah_inline_context_clear_callee,
        cgraph_inline_context_set_callee, cgrpah_inline_context_clear_callee,
        cgraph_recursive_inlining_p): New static function.
        cgraph_recursive_inlining_p): New static function.
        (cgraph_decide_inline*):  Reorganize to use context.
        (cgraph_decide_inline*):  Reorganize to use context.
2003-11-30  Paul Brook  
2003-11-30  Paul Brook  
        * Makefile.in (GTFILES): Remove stray '\'.
        * Makefile.in (GTFILES): Remove stray '\'.
2003-11-30  Daniel Berlin  
2003-11-30  Daniel Berlin  
        * c-config-lang.in: Move tree-alias-* from here
        * c-config-lang.in: Move tree-alias-* from here
        * Makefile.in (GTFILES): To here.
        * Makefile.in (GTFILES): To here.
        * tree-alias-ander.c: Include bitmap.h
        * tree-alias-ander.c: Include bitmap.h
        (andersen_function_call): Updated to take address of variables
        (andersen_function_call): Updated to take address of variables
        in an ADDR_EXPR in a CALL_EXPR.
        in an ADDR_EXPR in a CALL_EXPR.
        * tree-alias-common.h (struct tree_alias_ops): Update arguments to
        * tree-alias-common.h (struct tree_alias_ops): Update arguments to
        function_call.
        function_call.
        * tree-alias-type.h (struct alias_typevar_common): Add varnum.
        * tree-alias-type.h (struct alias_typevar_common): Add varnum.
        * tree-alias-common.c: Include bitmap.h, and function.h.
        * tree-alias-common.c: Include bitmap.h, and function.h.
        s/global_var/pta_global_var/g.
        s/global_var/pta_global_var/g.
        (addrargs): New static variable.
        (addrargs): New static variable.
        (pta_global_var): Ditto.
        (pta_global_var): Ditto.
        (find_func_decls): Remove.
        (find_func_decls): Remove.
        (find_func_aliases): Take one argument, update all callers.
        (find_func_aliases): Take one argument, update all callers.
        Handle (cast) [addr-expr] [var].
        Handle (cast) [addr-expr] [var].
        Handle COMPONENT_REF of an  INDIRECT_REF.
        Handle COMPONENT_REF of an  INDIRECT_REF.
        Pass info about ADDR_EXPR arguments to function_call function.
        Pass info about ADDR_EXPR arguments to function_call function.
        (deal_with_call_aliasing): New function.
        (deal_with_call_aliasing): New function.
        (call_may_return): New function.
        (call_may_return): New function.
        (get_alias_var_decl): Call find_func_aliases on the DECL_INITIAL
        (get_alias_var_decl): Call find_func_aliases on the DECL_INITIAL
        of a global var.
        of a global var.
        Use ALIAS_TVAR_VARNUM, instead of VARRAY_ACTIVE_SIZE (alias_vars) - 1.
        Use ALIAS_TVAR_VARNUM, instead of VARRAY_ACTIVE_SIZE (alias_vars) - 1.
        (get_alias_var): Handle REALPART_EXPR and IMAGPART_EXPR.
        (get_alias_var): Handle REALPART_EXPR and IMAGPART_EXPR.
        Return NULL in default case.
        Return NULL in default case.
        (intra_function_call): Remove wrong code.
        (intra_function_call): Remove wrong code.
        (create_fun_alias_var): Use simple_assign, not addr_assign.
        (create_fun_alias_var): Use simple_assign, not addr_assign.
        Set up ALIAS_TVAR_VARNUM when creating an alias var.
        Set up ALIAS_TVAR_VARNUM when creating an alias var.
        (create_fun_alis_var_ptf): Ditto on ALIAS_TVAR_VARNUM.
        (create_fun_alis_var_ptf): Ditto on ALIAS_TVAR_VARNUM.
        (create_alias_var): Ditto.
        (create_alias_var): Ditto.
        (create_alias_vars):  Build pta_global_var here.
        (create_alias_vars):  Build pta_global_var here.
        Walk unexpanded_var_list.
        Walk unexpanded_var_list.
        Walk the statements in basic blocks.
        Walk the statements in basic blocks.
        (delete_alias_vars): Correct ip_partial case.
        (delete_alias_vars): Correct ip_partial case.
        Free addrargs.
        Free addrargs.
        (init_alias_vars): Create addrargs.
        (init_alias_vars): Create addrargs.
2003-11-29  Jan Hubicka  
2003-11-29  Jan Hubicka  
        * Makefile.in (tree-ssanames.o): Depend on gt-tree-ssanames.h.
        * Makefile.in (tree-ssanames.o): Depend on gt-tree-ssanames.h.
        (tree-eh.o): Depend on gt-tree-eh.h.
        (tree-eh.o): Depend on gt-tree-eh.h.
        (gr-tree-ssanames.h, gt-tree-eh.h): New targets.
        (gr-tree-ssanames.h, gt-tree-eh.h): New targets.
        (GTFILES): Add tree-ssanames.c, tree-eh.c
        (GTFILES): Add tree-ssanames.c, tree-eh.c
        * tree-eh.c: Include ggc.h and gt-tree-eh.h
        * tree-eh.c: Include ggc.h and gt-tree-eh.h
        (lower_eh_constructs): Allecate throw_stmt_table in ggc.
        (lower_eh_constructs): Allecate throw_stmt_table in ggc.
        * tree-ssanames.c: Include ggc.h and gt-tree-ssanames.h
        * tree-ssanames.c: Include ggc.h and gt-tree-ssanames.h
        * function.h (struct function): Add saved_tree/saved_args.
        * function.h (struct function): Add saved_tree/saved_args.
        * toplev.c (rest_of_compilation): Move code to  clear cfun and
        * toplev.c (rest_of_compilation): Move code to  clear cfun and
        DECL_SAVED_INSNS and call to ggc_collect to ...
        DECL_SAVED_INSNS and call to ggc_collect to ...
        * tree-optimize.c (tree_rest_of_compilation): ... this function. Use
        * tree-optimize.c (tree_rest_of_compilation): ... this function. Use
        cfun to save/restore function body.
        cfun to save/restore function body.
2003-11-28  Richard Henderson  
2003-11-28  Richard Henderson  
        * gimplify.c (create_tmp_var_raw): Split out from create_tmp_var.
        * gimplify.c (create_tmp_var_raw): Split out from create_tmp_var.
        (create_tmp_var): Use it.
        (create_tmp_var): Use it.
        (create_tmp_alias_var): Remove.
        (create_tmp_alias_var): Remove.
        * tree-alias-common.c, tree-dfa.c: Use create_tmp_var_raw instead.
        * tree-alias-common.c, tree-dfa.c: Use create_tmp_var_raw instead.
        * tree-simple.h: Update decls.
        * tree-simple.h: Update decls.
2003-11-28  Richard Henderson  
2003-11-28  Richard Henderson  
        * gimple-low.c (lower_function_body): Call lower_bind_expr
        * gimple-low.c (lower_function_body): Call lower_bind_expr
        to handle the outermost BIND_EXPR.
        to handle the outermost BIND_EXPR.
2003-11-28  Jan Hubicka  
2003-11-28  Jan Hubicka  
        * tree-ssa.c (remove_annotations_r): Kill.
        * tree-ssa.c (remove_annotations_r): Kill.
        (delete_tree_ssa): Remove annotations using statement walk;
        (delete_tree_ssa): Remove annotations using statement walk;
        kill argument fndecl.
        kill argument fndecl.
        (rewrite_out_of_ssa): Update call.
        (rewrite_out_of_ssa): Update call.
2003-11-27  Andrew MacLeod  
2003-11-27  Andrew MacLeod  
        * tree-ssa-live.c (register_ssa_partition): Abort if a virtual SSA
        * tree-ssa-live.c (register_ssa_partition): Abort if a virtual SSA
        version is registered.
        version is registered.
        (create_ssa_var_map): Always process PHI nodes.
        (create_ssa_var_map): Always process PHI nodes.
        * tree-ssa.c (Eliminate_virtual_phis): Rename from
        * tree-ssa.c (Eliminate_virtual_phis): Rename from
        eliminate_extraneous_phis, and look specifically for virtuals.
        eliminate_extraneous_phis, and look specifically for virtuals.
        (rewrite_out_of_ssa): Eliminate virtual PHI nodes before building
        (rewrite_out_of_ssa): Eliminate virtual PHI nodes before building
        partitions.
        partitions.
2003-11-27  Zdenek Dvorak  
2003-11-27  Zdenek Dvorak  
        * tree-ssa-ccp.c (get_strlen): Mark the visited variables.
        * tree-ssa-ccp.c (get_strlen): Mark the visited variables.
        (ccp_fold_builtin): Changed due to changed calling convention of
        (ccp_fold_builtin): Changed due to changed calling convention of
        get_strlen.
        get_strlen.
2003-11-26  Diego Novillo  
2003-11-26  Diego Novillo  
        Revert
        Revert
        2003-11-25  Jeff law  
        2003-11-25  Jeff law  
            * Makefile.in (OBJS-common): Add tree-phinodes.o.
            * Makefile.in (OBJS-common): Add tree-phinodes.o.
            (tree-phinodes.o): Add dependencies.
            (tree-phinodes.o): Add dependencies.
            * tree-phinodes.c: New file.
            * tree-phinodes.c: New file.
            * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
            * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
            (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
            (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
            (remove_phi_node, remove_all_phi_nodes_for): Similarly.
            (remove_phi_node, remove_all_phi_nodes_for): Similarly.
            * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
            * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
            (delete_tree_ssa): Finalize PHI node management.
            (delete_tree_ssa): Finalize PHI node management.
            * tree.c (dump_tree_statistics): Dump PHI node stats.
            * tree.c (dump_tree_statistics): Dump PHI node stats.
            (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
            (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
            * tree.h (init_phinodes): Prototype.
            * tree.h (init_phinodes): Prototype.
            (fini_phinodes, release_phi_node): Likewise.
            (fini_phinodes, release_phi_node): Likewise.
            (phinodes_print_statistics): Likewise.
            (phinodes_print_statistics): Likewise.
2003-11-25  Jan Hubicka  
2003-11-25  Jan Hubicka  
        * tree-mustalias.c (promote_var): Do not clear
        * tree-mustalias.c (promote_var): Do not clear
        may_point_to_global_mem.
        may_point_to_global_mem.
2003-11-25  Jeff law  
2003-11-25  Jeff law  
        * domwalk.c (walk_dominator_tree): Indicate to the block local
        * domwalk.c (walk_dominator_tree): Indicate to the block local
        data initializer if the block local data is new or recycled.
        data initializer if the block local data is new or recycled.
        * domwalk.h (struct dom_walk_data): Corresponding changes.
        * domwalk.h (struct dom_walk_data): Corresponding changes.
        * tree-ssa-dom.c (dom_opt_initialize_block_local_data): Accept and use
        * tree-ssa-dom.c (dom_opt_initialize_block_local_data): Accept and use
        "recycled" argument.  For recycled structures, only clear varrays
        "recycled" argument.  For recycled structures, only clear varrays
        that have been initialized.  For new blocks, do not initialize
        that have been initialized.  For new blocks, do not initialize
        varrays here.
        varrays here.
        (dom_opt_finalize_block): When threading across edges, if the
        (dom_opt_finalize_block): When threading across edges, if the
        true/false varrays have not been initialized, then the limit is zero.
        true/false varrays have not been initialized, then the limit is zero.
        Only clear block local varrays that have been initialized.
        Only clear block local varrays that have been initialized.
        (record_equivalences_from_incoming_edge): If necessary, initialize
        (record_equivalences_from_incoming_edge): If necessary, initialize
        block local const_and_copies.
        block local const_and_copies.
        (dom_opt_walk_stmts): If necessary, initialize block local
        (dom_opt_walk_stmts): If necessary, initialize block local
        stmts_to_rescan.
        stmts_to_rescan.
        (record_var_is_nonzero): If necessary, initialize block local
        (record_var_is_nonzero): If necessary, initialize block local
        nonzero_vars.
        nonzero_vars.
        (record_cond_is_true): If necessary, initialize block local
        (record_cond_is_true): If necessary, initialize block local
        true_exprs.
        true_exprs.
        (record_cond_is_false): If necessary, initialize block local
        (record_cond_is_false): If necessary, initialize block local
        false_exprs.
        false_exprs.
        (lookup_avail_expr): If necessary, initialize block local
        (lookup_avail_expr): If necessary, initialize block local
        avail_exprs.
        avail_exprs.
        (record_range): If necessary, initialize block local vrp_varaibles.
        (record_range): If necessary, initialize block local vrp_varaibles.
        * tree-ssa.c
        * tree-ssa.c
        * tree-ssa.c (rewrite_initialize_block_local_data): Accept and use
        * tree-ssa.c (rewrite_initialize_block_local_data): Accept and use
        "recycled" argument.  For recycled structures, only clear varrays
        "recycled" argument.  For recycled structures, only clear varrays
        that have been initialized.  For new blocks, do not initialize
        that have been initialized.  For new blocks, do not initialize
        varrays here.
        varrays here.
        (rewrite_finalize_block): Only clear block local varrays that have
        (rewrite_finalize_block): Only clear block local varrays that have
        been initialized.
        been initialized.
        (register_new_def): If necessary, initialize block local defs.
        (register_new_def): If necessary, initialize block local defs.
        * tree-ssa-dom.c (get_eq_expr_value): Return a struct rather than
        * tree-ssa-dom.c (get_eq_expr_value): Return a struct rather than
        a tree node.
        a tree node.
        (record_equivalences_from_incoming_edge): Corresponding changes.
        (record_equivalences_from_incoming_edge): Corresponding changes.
        (find_equivalent_equality_comparison): Use tree_int_cst_XXX rather
        (find_equivalent_equality_comparison): Use tree_int_cst_XXX rather
        then building and folding nodes.
        then building and folding nodes.
        (simplify_cond_and_lookup_avail_expr): Likewise.
        (simplify_cond_and_lookup_avail_expr): Likewise.
        * Makefile.in (OBJS-common): Add tree-phinodes.o.
        * Makefile.in (OBJS-common): Add tree-phinodes.o.
        (tree-phinodes.o): Add dependencies.
        (tree-phinodes.o): Add dependencies.
        * tree-phinodes.c: New file.
        * tree-phinodes.c: New file.
        * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
        * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
        (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
        (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
        (remove_phi_node, remove_all_phi_nodes_for): Similarly.
        (remove_phi_node, remove_all_phi_nodes_for): Similarly.
        * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
        * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
        (delete_tree_ssa): Finalize PHI node management.
        (delete_tree_ssa): Finalize PHI node management.
        * tree.c (dump_tree_statistics): Dump PHI node stats.
        * tree.c (dump_tree_statistics): Dump PHI node stats.
        (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
        (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
        * tree.h (init_phinodes): Prototype.
        * tree.h (init_phinodes): Prototype.
        (fini_phinodes, release_phi_node): Likewise.
        (fini_phinodes, release_phi_node): Likewise.
        (phinodes_print_statistics): Likewise.
        (phinodes_print_statistics): Likewise.
2003-11-25  Jan Hubicka  
2003-11-25  Jan Hubicka  
        * tree-inline.c (save_body): New body
        * tree-inline.c (save_body): New body
        * tree-inline.h (save_body): Declare.
        * tree-inline.h (save_body): Declare.
        * tree-optimize.c (tree_rest_of_compilation): Save function tree
        * tree-optimize.c (tree_rest_of_compilation): Save function tree
        properly.
        properly.
2003-11-24  Richard Henderson  
2003-11-24  Richard Henderson  
        * gimplify.c (canonicalize_addr_expr): New.
        * gimplify.c (canonicalize_addr_expr): New.
        (gimplify_conversion): Use it.  Canonicalize after nop cast removal.
        (gimplify_conversion): Use it.  Canonicalize after nop cast removal.
        * tree-simple.c (is_gimple_min_invariant): Remove STRING_CST cast
        * tree-simple.c (is_gimple_min_invariant): Remove STRING_CST cast
        special case.
        special case.
2003-11-24  Jeff Law  
2003-11-24  Jeff Law  
        * flow.c (count_or_remove_death_notes_bb): New.  Extracted from
        * flow.c (count_or_remove_death_notes_bb): New.  Extracted from
        count_or_remove_death_notes.
        count_or_remove_death_notes.
        (count_or_remove_death_notes): Use EXECUTE_IF_SET_IN_SBITMAP.
        (count_or_remove_death_notes): Use EXECUTE_IF_SET_IN_SBITMAP.
2003-11-24  Richard Henderson  
2003-11-24  Richard Henderson  
        PR 13174, PR 13143
        PR 13174, PR 13143
        * gimplify.c (cpt_same_type): Allow different ARRAY_TYPEs with
        * gimplify.c (cpt_same_type): Allow different ARRAY_TYPEs with
        the same base type.
        the same base type.
2003-11-24  Daniel Berlin  
2003-11-24  Daniel Berlin  
        Fix PR/13163
        Fix PR/13163
        * tree-ssa-pre.c (append_eref_to_block): Delete.
        * tree-ssa-pre.c (append_eref_to_block): Delete.
        (insert_euse_in_preorder_dt_order_1): Ditto.
        (insert_euse_in_preorder_dt_order_1): Ditto.
        (insert_one_operand): Take an extra argument, because
        (insert_one_operand): Take an extra argument, because
        avdefs may need to be changed.
        avdefs may need to be changed.
        (clear_all_eref_arrays): Use FOR_ALL_BB.
        (clear_all_eref_arrays): Use FOR_ALL_BB.
        (insert_occ_in_preorder_dt_order): Stop appending to bb eref arrays.
        (insert_occ_in_preorder_dt_order): Stop appending to bb eref arrays.
        Use FOR_ALL_BB.
        Use FOR_ALL_BB.
        (insert_euse_in_preorder_dt_order): Rewrite to just build a new varray
        (insert_euse_in_preorder_dt_order): Rewrite to just build a new varray
        with only the EPHI's and EUSE's, and then sort it.
        with only the EPHI's and EUSE's, and then sort it.
        (pre_expression): Don't use bb based erefs array when printing
        (pre_expression): Don't use bb based erefs array when printing
        expressions.
        expressions.
        (split_critical_edges): Just use FOR_ALL_BB.
        (split_critical_edges): Just use FOR_ALL_BB.
        (tree_perform_ssapre): Pre-split entry block successor edge if the
        (tree_perform_ssapre): Pre-split entry block successor edge if the
        successor block has multiple preds.
        successor block has multiple preds.
        * tree-flow.h (struct bb_ann_d): Remove erefs varray.
        * tree-flow.h (struct bb_ann_d): Remove erefs varray.
2003-11-24  Daniel Berlin  
2003-11-24  Daniel Berlin  
        * tree-cfg.c (cleanup_tree_cfg): FOR_EACH_BB -> FOR_ALL_BB when
        * tree-cfg.c (cleanup_tree_cfg): FOR_EACH_BB -> FOR_ALL_BB when
        clearing dom children, because the entry block has dom_children
        clearing dom children, because the entry block has dom_children
        too.
        too.
        * tree-ssa.c (build_dominator_tree): Ditto.
        * tree-ssa.c (build_dominator_tree): Ditto.
2003-11-24  Diego Novillo  
2003-11-24  Diego Novillo  
        * tree-cfg.c (compute_dominance_frontiers_1,
        * tree-cfg.c (compute_dominance_frontiers_1,
        compute_dominance_frontiers): Move from ssa.c.
        compute_dominance_frontiers): Move from ssa.c.
        * tree-flow.h (compute_dominance_frontiers): Declare.
        * tree-flow.h (compute_dominance_frontiers): Declare.
        * Makefile.in (tree-ssa.o, tree-ssa-live.o, tree-ssa-pre.o,
        * Makefile.in (tree-ssa.o, tree-ssa-live.o, tree-ssa-pre.o,
        tree-optimize.o): Don't depend on ssa.h.
        tree-optimize.o): Don't depend on ssa.h.
        * tree-ssa.c: Don't include ssa.h.
        * tree-ssa.c: Don't include ssa.h.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
2003-11-24  Jan Hubicka  
2003-11-24  Jan Hubicka  
        * fold-const.c (fold):  Do not return early when
        * fold-const.c (fold):  Do not return early when
        optimizing COMPONENT_REF and constant.
        optimizing COMPONENT_REF and constant.
2003-11-24  Richard Henderson  
2003-11-24  Richard Henderson  
        * objc/objc-act.c (build_protocol_expr): Use convert instead of
        * objc/objc-act.c (build_protocol_expr): Use convert instead of
        smashing TREE_TYPE.
        smashing TREE_TYPE.
2003-11-23  Andrew MacLeod  
2003-11-23  Andrew MacLeod  
        * tree-ssa-live.h (SSANORM_PERFORM_TER, SSANORM_COMBINE_TEMPS,
        * tree-ssa-live.h (SSANORM_PERFORM_TER, SSANORM_COMBINE_TEMPS,
        SSANORM_REMOVE_ALL_PHIS): New flag macros.
        SSANORM_REMOVE_ALL_PHIS): New flag macros.
        * tree-ssa.c (replace_variable): Return true if var was rewritten.
        * tree-ssa.c (replace_variable): Return true if var was rewritten.
        (eliminate_extraneous_phis): Dump var map to file if checking triggers
        (eliminate_extraneous_phis): Dump var map to file if checking triggers
        an abort.
        an abort.
        (rewrite_trees): Set modified_stmt if stmt was changed.
        (rewrite_trees): Set modified_stmt if stmt was changed.
        (remove_ssa_form): Move more of rewrite_out_of_ssa to make it serve
        (remove_ssa_form): Move more of rewrite_out_of_ssa to make it serve
        all the same functions based on new flags in tree-ssa-live.h.
        all the same functions based on new flags in tree-ssa-live.h.
        (rewrite_out_of_ssa): Call remove_ssa_form.
        (rewrite_out_of_ssa): Call remove_ssa_form.
2003-11-23  Jan Hubicka  
2003-11-23  Jan Hubicka  
        * tree-cfg.c (tree_verify_flow_info): Check that ENTRY/EXIT block
        * tree-cfg.c (tree_verify_flow_info): Check that ENTRY/EXIT block
        has no instructions associated with it.
        has no instructions associated with it.
2003-11-22  Jeff Law  
2003-11-22  Jeff Law  
        * tree-ssa-names.c (release_ssa_name): Use SSA_NAME_IN_FREE_LIST
        * tree-ssa-names.c (release_ssa_name): Use SSA_NAME_IN_FREE_LIST
        instead of checking SSA_NAME_DEF_STMT being null.
        instead of checking SSA_NAME_DEF_STMT being null.
        * tree.h (SSA_NAME_DEF_STMT): Use chain field rather than the
        * tree.h (SSA_NAME_DEF_STMT): Use chain field rather than the
        def_stmt field.
        def_stmt field.
        (SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Use existing flag from tree_common.
        (SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Use existing flag from tree_common.
        (SSA_NAME_IN_FREE_LIST): Define.
        (SSA_NAME_IN_FREE_LIST): Define.
        (struct tree_ssa_name): Kill DEF_STMT and OCCURS_IN_ABNORMAL_PHI fields.
        (struct tree_ssa_name): Kill DEF_STMT and OCCURS_IN_ABNORMAL_PHI fields.
2003-11-22  Zdenek Dvorak  
2003-11-22  Zdenek Dvorak  
        * tree-pretty-print.c (dump_generic_node): Remove superfluous ';'.
        * tree-pretty-print.c (dump_generic_node): Remove superfluous ';'.
2003-11-22  Diego Novillo  
2003-11-22  Diego Novillo  
        * Makefile.in (simple-break-elim.o): Remove.
        * Makefile.in (simple-break-elim.o): Remove.
        (simple-goto-elim.o): Remove.
        (simple-goto-elim.o): Remove.
        (tree-dchain.o): Remove.
        (tree-dchain.o): Remove.
        * simple-break-elim.c: Remove.
        * simple-break-elim.c: Remove.
        * simple-goto-elim.c: Remove.
        * simple-goto-elim.c: Remove.
        * tree-dchain.c: Remove.
        * tree-dchain.c: Remove.
        * tree-dchain.h: Remove.
        * tree-dchain.h: Remove.
2003-11-22  Daniel Berlin  
2003-11-22  Daniel Berlin  
        * tree-ssa-pre.c (build_dfs_id_array_1): > should be >=
        * tree-ssa-pre.c (build_dfs_id_array_1): > should be >=
        (build_dfn_array): Ditto.
        (build_dfn_array): Ditto.
2003-11-21  Diego Novillo  
2003-11-21  Diego Novillo  
        * Makefile.in (tree-dfa.o): Add dependency on $(TREE_DUMP_H)
        * Makefile.in (tree-dfa.o): Add dependency on $(TREE_DUMP_H)
        * tree-dfa.c: Include tree-dump.h
        * tree-dfa.c: Include tree-dump.h
        (compute_alias_sets): Call dump_function_to_file.
        (compute_alias_sets): Call dump_function_to_file.
        (may_access_global_mem_p): Check if the base address of _REF nodes
        (may_access_global_mem_p): Check if the base address of _REF nodes
        may point to global memory.
        may point to global memory.
        * cfgcleanup.c (try_crossjump_to_edge): Initialize newpos1 and
        * cfgcleanup.c (try_crossjump_to_edge): Initialize newpos1 and
        newpos2.
        newpos2.
2003-11-21  Jeff Law  
2003-11-21  Jeff Law  
        Revert:
        Revert:
        2003-11-21  Jan Hubicka  
        2003-11-21  Jan Hubicka  
                * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
                * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
                * tree-must-alias.c (tree_compute_must_alias): promote pointers.
                * tree-must-alias.c (tree_compute_must_alias): promote pointers.
                (find_addressable_vars):  Deal with complex constant
                (find_addressable_vars):  Deal with complex constant
                expressions; do not clear may_point_to_global_mem.
                expressions; do not clear may_point_to_global_mem.
2003-11-21  Jeff Law  
2003-11-21  Jeff Law  
        * Makefile.in (domwalk.o): Depend on $(GGC_H).
        * Makefile.in (domwalk.o): Depend on $(GGC_H).
        * domwalk.c: Include ggc.h.
        * domwalk.c: Include ggc.h.
        (walk_dominator_tree): Manage allocation/deallocation and
        (walk_dominator_tree): Manage allocation/deallocation and
        pushing/popping of the toplevel block data pointer here.
        pushing/popping of the toplevel block data pointer here.
        Use callback to initialize the block local data.
        Use callback to initialize the block local data.
        (init_walk_dominator_tree): New function.
        (init_walk_dominator_tree): New function.
        (fini_walk_dominator_tree): Likewise.
        (fini_walk_dominator_tree): Likewise.
        * domwalk.h (struct dom_walk_data): Add callback to initialize
        * domwalk.h (struct dom_walk_data): Add callback to initialize
        block local data.  Add field for sizeof block local data.
        block local data.  Add field for sizeof block local data.
        Add "private" field free_block_data.
        Add "private" field free_block_data.
        (init_dominator_tree, fini_dominator_tree): Prototype.
        (init_dominator_tree, fini_dominator_tree): Prototype.
        * tree-ssa-dom.c (dom_opt_initialize_local_data): New function.
        * tree-ssa-dom.c (dom_opt_initialize_local_data): New function.
        (tree_ssa_dominator_optimize_1): Initialize new fields in the
        (tree_ssa_dominator_optimize_1): Initialize new fields in the
        dominator walker structure.  Initialize and finalize the dominator
        dominator walker structure.  Initialize and finalize the dominator
        walker.  Slightly reorder code to make it more readable..
        walker.  Slightly reorder code to make it more readable..
        (dom_opt_initialize_block): No longer deal with allocation and
        (dom_opt_initialize_block): No longer deal with allocation and
        initialization of block local data.
        initialization of block local data.
        (dom_opt_finalize_block): Similarly for deallocation of block
        (dom_opt_finalize_block): Similarly for deallocation of block
        local data.
        local data.
        * tree-ssa.c (rewrite_block_data): New structure.
        * tree-ssa.c (rewrite_block_data): New structure.
        (rewrite_initialize_block_local_data): New function.
        (rewrite_initialize_block_local_data): New function.
        (rewrite_initialize_block): No longer deal with allocation and
        (rewrite_initialize_block): No longer deal with allocation and
        initialization of block local data.
        initialization of block local data.
        (rewrite_into_ssa): Initialize new fields in the dominator walker
        (rewrite_into_ssa): Initialize new fields in the dominator walker
        structure.  Initialize and finalize the dominator walker.
        structure.  Initialize and finalize the dominator walker.
        (rewrite_initialize_block): No longer deal with allocation and
        (rewrite_initialize_block): No longer deal with allocation and
        initialization of block local data.
        initialization of block local data.
        (rewrite_optimize_stmts): Deal with changes in the dominator
        (rewrite_optimize_stmts): Deal with changes in the dominator
        walker structure.
        walker structure.
        (rewrite_finalize_block): No longer with deallocation of block
        (rewrite_finalize_block): No longer with deallocation of block
        local data.
        local data.
        * tree-dfa.c (add_vdef, cleanup_voperand_arrays): Use NUM_VDEFS.
        * tree-dfa.c (add_vdef, cleanup_voperand_arrays): Use NUM_VDEFS.
        (mark_new_vars_to_rename, collect_dfa_status_r): Likewise.
        (mark_new_vars_to_rename, collect_dfa_status_r): Likewise.
        * tree-pretty-print.c (dump_vops): Likewise.
        * tree-pretty-print.c (dump_vops): Likewise.
        * tree-sra.c (create_scalar_copies): Likewise.
        * tree-sra.c (create_scalar_copies): Likewise.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
        * tree-ssa-live.c (create_ssa_var_map): Likewise.
        * tree-ssa-live.c (create_ssa_var_map): Likewise.
        (calculate_live_on_entry): Likewise.
        (calculate_live_on_entry): Likewise.
        * tree-ssa-pre.c (process_left_occs_and_kills): Likewise.
        * tree-ssa-pre.c (process_left_occs_and_kills): Likewise.
        * tree-ssa.c (mark_def_sites, rewrite_stmt): Likewise.
        * tree-ssa.c (mark_def_sites, rewrite_stmt): Likewise.
        * tree.h (NUM_VDEFS): Define.
        * tree.h (NUM_VDEFS): Define.
        * tree-ssa-ccp.c (visit_stmt): Use NUM_VDEFS.  Fix thinko in last
        * tree-ssa-ccp.c (visit_stmt): Use NUM_VDEFS.  Fix thinko in last
        change.
        change.
        (initialize): Use NUM_VDEFS.
        (initialize): Use NUM_VDEFS.
        * tree-dfa.c (add_vdef): Revamp to handle new method for
        * tree-dfa.c (add_vdef): Revamp to handle new method for
        recording vdefs.
        recording vdefs.
        (cleanup_operand_arrays): Similarly.
        (cleanup_operand_arrays): Similarly.
        * tree-sra.c (create_scalar_copies): Similarly.
        * tree-sra.c (create_scalar_copies): Similarly.
        * tree-ssa-ccp.c (visit_stmt, initialize): Similarly.
        * tree-ssa-ccp.c (visit_stmt, initialize): Similarly.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Similarly.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Similarly.
        * tree-ssa-dom.c (cprop_into_stmt): Similarly.
        * tree-ssa-dom.c (cprop_into_stmt): Similarly.
        (record_equivalences_from_stmt): Similarly.
        (record_equivalences_from_stmt): Similarly.
        * tree-ssa-live.c (create_ssa_var_map): Similarly.
        * tree-ssa-live.c (create_ssa_var_map): Similarly.
        (calculate_live_on_entry): Similarly.
        (calculate_live_on_entry): Similarly.
        * tree-ssa.c (mark_def_sites, rewrite_stmt): Similarly.
        * tree-ssa.c (mark_def_sites, rewrite_stmt): Similarly.
        * tree-ssa-pre.c (process_left_occr_and_kills): Similarly.
        * tree-ssa-pre.c (process_left_occr_and_kills): Similarly.
        * tree-inline.c (estimate_num_insns_1): Kill VDEF_EXPR.
        * tree-inline.c (estimate_num_insns_1): Kill VDEF_EXPR.
        * tree-pretty-print.c (dump_generic_node) Kill VDEF_EXPR.
        * tree-pretty-print.c (dump_generic_node) Kill VDEF_EXPR.
        (dump_vops): Dump VDEFs here.
        (dump_vops): Dump VDEFs here.
        * tree.c (build_vdef_expr): Kill.
        * tree.c (build_vdef_expr): Kill.
        * tree.h (build_vdef_expr): Kill prototype.
        * tree.h (build_vdef_expr): Kill prototype.
        (VDEF_RESULT, VDEF_OP): Revamp to handle new method for recording
        (VDEF_RESULT, VDEF_OP): Revamp to handle new method for recording
        vdefs.
        vdefs.
        * tree.def (VDEF_EXPR): Kill.
        * tree.def (VDEF_EXPR): Kill.
        * tree-cfg.c (cfg_remove_useless_stmts): Set both VAR and VAL to
        * tree-cfg.c (cfg_remove_useless_stmts): Set both VAR and VAL to
        NULL anytime one of them is determined to be invalid.
        NULL anytime one of them is determined to be invalid.
2003-11-21  Andrew MacLeod  
2003-11-21  Andrew MacLeod  
        * tree-ssa-live.c (compact_var_map): Fix typo.  Clear correct field.
        * tree-ssa-live.c (compact_var_map): Fix typo.  Clear correct field.
        (calculate_live_on_entry): Remove unneeded stmt.
        (calculate_live_on_entry): Remove unneeded stmt.
        * tree-ssa-live.h (version_to_var): New.  Return variable associated
        * tree-ssa-live.h (version_to_var): New.  Return variable associated
        with a specific SSA version.
        with a specific SSA version.
        * tree-ssa.c (eliminate_build): Add check that ignored results don't
        * tree-ssa.c (eliminate_build): Add check that ignored results don't
        have important arguments.  Allow ignored results.
        have important arguments.  Allow ignored results.
        (coalesce_abnormal_edges): Allow non-relevant results to be ignored.
        (coalesce_abnormal_edges): Allow non-relevant results to be ignored.
        (eliminate_extraneous_phis): Allow non-relevant results.  Check that
        (eliminate_extraneous_phis): Allow non-relevant results.  Check that
        no important arguments are being missed.
        no important arguments are being missed.
        (coalesce_vars): Non-partition variables are allowed now, just ignored.
        (coalesce_vars): Non-partition variables are allowed now, just ignored.
        (rewrite_trees): New.  Split out from rewrite_out_of_ssa.  Perform tree
        (rewrite_trees): New.  Split out from rewrite_out_of_ssa.  Perform tree
        rewriting step.
        rewriting step.
        (remove_ssa_form): New.  Allow rewriting of just specified variables.
        (remove_ssa_form): New.  Allow rewriting of just specified variables.
        (rewrite_out_of_ssa): Use rewrite_trees and reorganize slightly to
        (rewrite_out_of_ssa): Use rewrite_trees and reorganize slightly to
        accommodate typechecking in eliminate_extraneous_phis.
        accommodate typechecking in eliminate_extraneous_phis.
2003-11-21  Jan Hubicka  
2003-11-21  Jan Hubicka  
        * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
        * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
        * tree-must-alias.c (tree_compute_must_alias): promote pointers.
        * tree-must-alias.c (tree_compute_must_alias): promote pointers.
        (find_addressable_vars):  Deal with complex constant expressions;
        (find_addressable_vars):  Deal with complex constant expressions;
        do not clear may_point_to_global_mem.
        do not clear may_point_to_global_mem.
2003-11-21  Jan Hubicka  
2003-11-21  Jan Hubicka  
        * parser.c (cp_parser_postfix_expression): Initialize 's' to
        * parser.c (cp_parser_postfix_expression): Initialize 's' to
        NULL_TREE.
        NULL_TREE.
2003-11-20  Richard Henderson  
2003-11-20  Richard Henderson  
        * Makefile.in (bitmap.o-warn, caller-save.o-warn, combine.o-warn,
        * Makefile.in (bitmap.o-warn, caller-save.o-warn, combine.o-warn,
        cgraphunit.o-warn, c-semantics.o-warn, emit-rtl.o-warn, expr.o-warn,
        cgraphunit.o-warn, c-semantics.o-warn, emit-rtl.o-warn, expr.o-warn,
        fold-const.o-warn, genattrtab.o-warn, regmove.o-warn, tree.o-warn,
        fold-const.o-warn, genattrtab.o-warn, regmove.o-warn, tree.o-warn,
        varasm.o-warn, f/expr.o-warn, profile.o-warn): Remove.
        varasm.o-warn, f/expr.o-warn, profile.o-warn): Remove.
        * bitmap.c (bitmap_first_set_bit): Abort if no non-zero word found.
        * bitmap.c (bitmap_first_set_bit): Abort if no non-zero word found.
        (bitmap_last_set_bit): Likewise.
        (bitmap_last_set_bit): Likewise.
        * combine.c (get_pos_from_mask): Always set *plen.
        * combine.c (get_pos_from_mask): Always set *plen.
2003-11-20  Richard Henderson  
2003-11-20  Richard Henderson  
        * tree-dfa.c (get_expr_operands): Remove handling of PLUS_EXPR
        * tree-dfa.c (get_expr_operands): Remove handling of PLUS_EXPR
        inside INDIRECT_REF.
        inside INDIRECT_REF.
2003-11-20  Diego Novillo  
2003-11-20  Diego Novillo  
        * tree-nomudflap.c (nogo): Fix prototype.
        * tree-nomudflap.c (nogo): Fix prototype.
2003-11-20  Richard Henderson  
2003-11-20  Richard Henderson  
        * except.c (output_function_exception_table): Strip nops.
        * except.c (output_function_exception_table): Strip nops.
        * gimplify.c (gimplify_addr_expr): Kill missing cast workaround.
        * gimplify.c (gimplify_addr_expr): Kill missing cast workaround.
        (cpt_same_type, check_pointer_types_r): New.
        (cpt_same_type, check_pointer_types_r): New.
        (gimplify_body): Call it.
        (gimplify_body): Call it.
        * tree-inline.c (insert_decl_map): New.
        * tree-inline.c (insert_decl_map): New.
        (remap_decl, remap_type, remap_block, copy_body_r,
        (remap_decl, remap_type, remap_block, copy_body_r,
        initialize_inlined_parameters, declare_return_variable,
        initialize_inlined_parameters, declare_return_variable,
        remap_save_expr, mark_local_for_remap_r): Use it.
        remap_save_expr, mark_local_for_remap_r): Use it.
2003-11-20  Frank Ch. Eigler  
2003-11-20  Frank Ch. Eigler  
        libstdc++/11696
        libstdc++/11696
        * c-pragma.c (handle_pragma_redefine_extname): Define always.
        * c-pragma.c (handle_pragma_redefine_extname): Define always.
        (init_pragma): Activate #pragma redefine_extname for mudflap.
        (init_pragma): Activate #pragma redefine_extname for mudflap.
        * tree-inline.c (copy_tree_r): Propagate mf_marked-ness.
        * tree-inline.c (copy_tree_r): Propagate mf_marked-ness.
        * tree-mudflap.c (mudflap_c_function): Break into new
        * tree-mudflap.c (mudflap_c_function): Break into new
        _decls and _ops functions.
        _decls and _ops functions.
        (mudflap_c_function_decls): Avoid unnecessary tree copying.
        (mudflap_c_function_decls): Avoid unnecessary tree copying.
        (mudflap_c_function_ops): Ditto.  Gimplify explicitly only for
        (mudflap_c_function_ops): Ditto.  Gimplify explicitly only for
        tree dumping.
        tree dumping.
        * tree-nomudflap.c: Add new stub functions.  Simplify error
        * tree-nomudflap.c: Add new stub functions.  Simplify error
        message emission throughout.
        message emission throughout.
        * tree-mudflap.h: Corresponding changes.
        * tree-mudflap.h: Corresponding changes.
        * tree-optimize.c (tree_rest_of_compilation): Call the _decl
        * tree-optimize.c (tree_rest_of_compilation): Call the _decl
        instrumentation before gimplification and ssa optimizations;
        instrumentation before gimplification and ssa optimizations;
        call the _ops instrumentation after ssa optimizations.
        call the _ops instrumentation after ssa optimizations.
2003-11-20  Diego Novillo  
2003-11-20  Diego Novillo  
        Initial fix for PR optimization/12747
        Initial fix for PR optimization/12747
        * Makefile.in (OBJS): Add tree-sra.o
        * Makefile.in (OBJS): Add tree-sra.o
        * common.opt (ftree-sra): Add.
        * common.opt (ftree-sra): Add.
        * flags.h (flag_tree_sra): Declare.
        * flags.h (flag_tree_sra): Declare.
        * gimplify.c (gimplify_addr_expr): Set TREE_INVARIANT
        * gimplify.c (gimplify_addr_expr): Set TREE_INVARIANT
        when producing and address expression for a DECL node.
        when producing and address expression for a DECL node.
        * opts.c (decode_options): Enable SRA at -O1.
        * opts.c (decode_options): Enable SRA at -O1.
        (common_handle_option): Handle -ftree-sra.
        (common_handle_option): Handle -ftree-sra.
        * timevar.def (TV_TREE_SRA): New timer.
        * timevar.def (TV_TREE_SRA): New timer.
        * toplev.c (flag_tree_sra): Define.
        * toplev.c (flag_tree_sra): Define.
        * tree-cfg.c (stmt_ends_bb_p): Declare extern.
        * tree-cfg.c (stmt_ends_bb_p): Declare extern.
        (bsi_replace): Add boolean argument to specify whether to
        (bsi_replace): Add boolean argument to specify whether to
        preserve EH region information.  Update all callers.
        preserve EH region information.  Update all callers.
        (bsi_commit_edge_inserts): Also check the edge from ENTRY_BLOCK_PTR
        (bsi_commit_edge_inserts): Also check the edge from ENTRY_BLOCK_PTR
        to basic block 0.
        to basic block 0.
        Move loop body ...
        Move loop body ...
        (bsi_commit_edge_inserts_1): ... here.
        (bsi_commit_edge_inserts_1): ... here.
        * tree-dump.c: Add dump for SRA pass.
        * tree-dump.c: Add dump for SRA pass.
        * tree.h (enum tree_dump_index): Modify accordingly.
        * tree.h (enum tree_dump_index): Modify accordingly.
        (STRIP_USELESS_TYPE_CONVERSION): Define.  Update all callers to
        (STRIP_USELESS_TYPE_CONVERSION): Define.  Update all callers to
        tree_ssa_useless_type_conversion.
        tree_ssa_useless_type_conversion.
        * tree-eh.c (add_stmt_to_eh_region): New function.
        * tree-eh.c (add_stmt_to_eh_region): New function.
        * tree-flow.h (stmt_ends_bb_p): Declare.
        * tree-flow.h (stmt_ends_bb_p): Declare.
        (add_stmt_to_eh_region): Declare.
        (add_stmt_to_eh_region): Declare.
        (tree_sra): Declare.
        (tree_sra): Declare.
        (enum bsi_iterator_update): Mirror entries in
        (enum bsi_iterator_update): Mirror entries in
        enum tsi_iterator_update.
        enum tsi_iterator_update.
        * tree-optimize.c (optimize_function_tree): Call SRA pass
        * tree-optimize.c (optimize_function_tree): Call SRA pass
        after must-alias.
        after must-alias.
        * tree-sra.c: New file.
        * tree-sra.c: New file.
        * doc/invoke.texi: Document -ftree-sra and -fdump-tree-sra.
        * doc/invoke.texi: Document -ftree-sra and -fdump-tree-sra.
2003-11-20  Andrew Macleod  
2003-11-20  Andrew Macleod  
        * tree-ssa.c (check_replaceable): Return false if the LHS is a
        * tree-ssa.c (check_replaceable): Return false if the LHS is a
        DECL_HARD_REGISTER.
        DECL_HARD_REGISTER.
2003-11-20  Diego Novillo  
2003-11-20  Diego Novillo  
        * tree-ssa-ccp.c (set_rhs): Replace with an empty statement when
        * tree-ssa-ccp.c (set_rhs): Replace with an empty statement when
        the replacement has no side effects.
        the replacement has no side effects.
2003-11-20  Jeff Law  
2003-11-20  Jeff Law  
        * Makefile.in (OBJS-common): Kill tree-ssa-copyprop.o.
        * Makefile.in (OBJS-common): Kill tree-ssa-copyprop.o.
        (tree-ssa-copyprop.o): Kill dependencies clause.
        (tree-ssa-copyprop.o): Kill dependencies clause.
        * common.opt (tree-copyprop): Kill option.
        * common.opt (tree-copyprop): Kill option.
        * flags.h (flag_tree_copyprop): Kill.
        * flags.h (flag_tree_copyprop): Kill.
        * opts.c (decode_options): Don't set flag_tree_copyprop.
        * opts.c (decode_options): Don't set flag_tree_copyprop.
        (common_handle_option): Kill handling of -ftree-copyprop.
        (common_handle_option): Kill handling of -ftree-copyprop.
        * timevar.def (TV_TREE_COPYPROP): Kill.
        * timevar.def (TV_TREE_COPYPROP): Kill.
        * toplev.c (flag_tree_copyprop): Kill.
        * toplev.c (flag_tree_copyprop): Kill.
        (lang_independent_options): Kill -ftree-copyprop.
        (lang_independent_options): Kill -ftree-copyprop.
        * tree-dump.c (dump_files): Kill .copyprop dump.
        * tree-dump.c (dump_files): Kill .copyprop dump.
        * tree-flow.h (tree_ssa_copyprop): Kill prototype.
        * tree-flow.h (tree_ssa_copyprop): Kill prototype.
        (propagate_copy): Move prototype.
        (propagate_copy): Move prototype.
        * tree-optimize.c (optimize_function_tree): Kill -ftree-copyprop stuff.
        * tree-optimize.c (optimize_function_tree): Kill -ftree-copyprop stuff.
        * tree.h (tree_dump_index): Kill TDI_copyprop.
        * tree.h (tree_dump_index): Kill TDI_copyprop.
        * tree-ssa-copyprop.c: Kill.
        * tree-ssa-copyprop.c: Kill.
        * tree-ssa-dom.c (propagate_copy): Moved here from tree-ssa-copyprop.c.
        * tree-ssa-dom.c (propagate_copy): Moved here from tree-ssa-copyprop.c.
        * tree-ssanames.c (free_ssanames): No longer a varray.
        * tree-ssanames.c (free_ssanames): No longer a varray.
        (init_ssanames, make_ssa_name, release_ssa_name): Corresponding changes.
        (init_ssanames, make_ssa_name, release_ssa_name): Corresponding changes.
2003-11-20  Steven Bosscher  
2003-11-20  Steven Bosscher  
        * tree-ssanames.c (ssanames_print_statistics): Use ISO function
        * tree-ssanames.c (ssanames_print_statistics): Use ISO function
        declaration.  Print unsigned ints, not usinged longs.
        declaration.  Print unsigned ints, not usinged longs.
2003-11-18  Daniel Berlin  
2003-11-18  Daniel Berlin  
        * tree-ssa-pre.c (rename_1): This should be static.
        * tree-ssa-pre.c (rename_1): This should be static.
        (append_eref_to_block): Don't gc allocate.
        (append_eref_to_block): Don't gc allocate.
        (clear_all_eref_arrays): Free the array rather than
        (clear_all_eref_arrays): Free the array rather than
        clear them.
        clear them.
        (rename_1): Ditto on both counts.
        (rename_1): Ditto on both counts.
        (free_expr_info): Free the arrays.
        (free_expr_info): Free the arrays.
        (collect_expressions): Don't gc allocate the arrays.
        (collect_expressions): Don't gc allocate the arrays.
2003-11-18  Daniel Berlin  
2003-11-18  Daniel Berlin  
        * tree-ssa-pre.c (insert_one_operand): Handle self-referential
        * tree-ssa-pre.c (insert_one_operand): Handle self-referential
        ephi's properly.
        ephi's properly.
2003-11-19  Jeff Law  
2003-11-19  Jeff Law  
        * tree-ssa-dom.c (true_exprs, false_exprs): New hash tables.
        * tree-ssa-dom.c (true_exprs, false_exprs): New hash tables.
        (nonzero_vars): New varray.
        (nonzero_vars): New varray.
        (dom_walk_block_data): Add true_exprs, false_exprs and nonzero_vars.
        (dom_walk_block_data): Add true_exprs, false_exprs and nonzero_vars.
        (get_value_for, set_value_for): Accept additional argument indicating
        (get_value_for, set_value_for): Accept additional argument indicating
        which table to use.  Callers updated.
        which table to use.  Callers updated.
        (tree_ssa_dominator_optimize_1): Initialize and wipe our new hash
        (tree_ssa_dominator_optimize_1): Initialize and wipe our new hash
        tables and varray appropriately.
        tables and varray appropriately.
        (dom_opt_initialize_block): Initialize new block local varrays for
        (dom_opt_initialize_block): Initialize new block local varrays for
        true expressions, false expressions and nonzero vars.  Update call
        true expressions, false expressions and nonzero vars.  Update call
        to record_equivalences_from_incoming_edge.
        to record_equivalences_from_incoming_edge.
        (dom_opt_finalize_block): Put equivalences from taken edges
        (dom_opt_finalize_block): Put equivalences from taken edges
        into the true_exprs and false_exprs hash tables.  Restore global
        into the true_exprs and false_exprs hash tables.  Restore global
        state for true_exprs, false_exprs and nonzero_vars  too.
        state for true_exprs, false_exprs and nonzero_vars  too.
        (record_equivalences_from_incoming_edge): Accept dom_walk structure
        (record_equivalences_from_incoming_edge): Accept dom_walk structure
        instead of a gazillion varrays.  Pass down block local
        instead of a gazillion varrays.  Pass down block local
        true_exprs, false_exprs and nonzero_vars varrays to various children.
        true_exprs, false_exprs and nonzero_vars varrays to various children.
        (optimize_stmt):  Accept block local nonzero_vars argument.  Pass
        (optimize_stmt):  Accept block local nonzero_vars argument.  Pass
        new varrays down to record_equivalences_from_stmt.
        new varrays down to record_equivalences_from_stmt.
        (thread_jumps_walk_stmt): Pass new varrays down to
        (thread_jumps_walk_stmt): Pass new varrays down to
        record_equivalences_from_stmt.
        record_equivalences_from_stmt.
        (dom_opt_walk_stmt): Pass new varrays down to optimize_stmt.
        (dom_opt_walk_stmt): Pass new varrays down to optimize_stmt.
        (dump_dominator_optimizer_statistics): Dump new hash tables.
        (dump_dominator_optimizer_statistics): Dump new hash tables.
        (record_cond_is_true, record_cond_is_false): Record info into
        (record_cond_is_true, record_cond_is_false): Record info into
        the true/false hash tables/varrays instead of the main expression
        the true/false hash tables/varrays instead of the main expression
        varrays.  Don't create useless tree nodes.
        varrays.  Don't create useless tree nodes.
        (record_var_is_nonzero): New function.
        (record_var_is_nonzero): New function.
        (record_equivalences_from_stmt): Don't generate useless tree nodes.
        (record_equivalences_from_stmt): Don't generate useless tree nodes.
        (lookup_avail_expr): Consult nonzero_vars and the true/false
        (lookup_avail_expr): Consult nonzero_vars and the true/false
        expression tables as well.
        expression tables as well.
        (get_eq_expr_value): Record local true/false expressions in the
        (get_eq_expr_value): Record local true/false expressions in the
        local true/false varrays rather than the main local expression
        local true/false varrays rather than the main local expression
        varray.
        varray.
        (true_false_expr_hash, true_false_expr_eq): New functions.
        (true_false_expr_hash, true_false_expr_eq): New functions.
        * Makefile.in (OBJS-sommon): Add tree-ssanames.o.
        * Makefile.in (OBJS-sommon): Add tree-ssanames.o.
        (tree-ssanames.o): Add dependencies.
        (tree-ssanames.o): Add dependencies.
        * tree-dfa.c (remove_phi_node): Release SSA_NAME expression when
        * tree-dfa.c (remove_phi_node): Release SSA_NAME expression when
        we remove the PHI node.
        we remove the PHI node.
        (remove_all_phi_nodes_for): Similarly.
        (remove_all_phi_nodes_for): Similarly.
        * tree-ssa.c (prepare_operand_for_rename): Similarly when we
        * tree-ssa.c (prepare_operand_for_rename): Similarly when we
        strip away an SSA_NAME expression from an operand.
        strip away an SSA_NAME expression from an operand.
        (init_tree_ssa): Call the SSA_NAME initializer.
        (init_tree_ssa): Call the SSA_NAME initializer.
        (delete_tree_ssa): Call the SSA_NAME finalizer.
        (delete_tree_ssa): Call the SSA_NAME finalizer.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Clear the
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Clear the
        const_and_copies and vrp_data virtual arrays.
        const_and_copies and vrp_data virtual arrays.
        * tree-ssanames.c: New file for management of SSA_NAME expressions.
        * tree-ssanames.c: New file for management of SSA_NAME expressions.
        * tree.h: Prototypes for functions exported by tree-ssanames.c.
        * tree.h: Prototypes for functions exported by tree-ssanames.c.
        * tree-flow.h, tree-ssa-ccp.c, tree-ssa-dce.c: Use highest_ssa_version
        * tree-flow.h, tree-ssa-ccp.c, tree-ssa-dce.c: Use highest_ssa_version
        rather than next_ssa_version.
        rather than next_ssa_version.
        * tree-ssa-dom.c, tree-ssa-live.c, tree-ssa.c: Similarly.
        * tree-ssa-dom.c, tree-ssa-live.c, tree-ssa.c: Similarly.
        * tree.c (dump_tree_statistics): Call into tree-ssaname statistics
        * tree.c (dump_tree_statistics): Call into tree-ssaname statistics
        dumper too.
        dumper too.
        (make_ssa_name): Kill.  Now in tree-ssanames.c
        (make_ssa_name): Kill.  Now in tree-ssanames.c
2003-11-18  Richard Henderson  
2003-11-18  Richard Henderson  
        * tree.c (recompute_tree_invarant_for_addr_expr): Split out from ...
        * tree.c (recompute_tree_invarant_for_addr_expr): Split out from ...
        (build1): ... here.
        (build1): ... here.
        * tree.h: Declare it.
        * tree.h: Declare it.
        * gimplify.c (gimplify_addr_expr): Use it.
        * gimplify.c (gimplify_addr_expr): Use it.
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Split out
        * tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Split out
        from fold_indirect_refs_r.
        from fold_indirect_refs_r.
        (maybe_fold_stmt_indirect): Likewise.
        (maybe_fold_stmt_indirect): Likewise.
        (maybe_fold_offset_to_component_ref): New.
        (maybe_fold_offset_to_component_ref): New.
        (maybe_fold_stmt_plus): New.
        (maybe_fold_stmt_plus): New.
        (fold_stmt_r): Rename from fold_indirect_refs_r.
        (fold_stmt_r): Rename from fold_indirect_refs_r.
        (fold_stmt): Strip more useless type conversions.
        (fold_stmt): Strip more useless type conversions.
2003-11-18  Richard Henderson  
2003-11-18  Richard Henderson  
        * tree-cfg.c (dump_function_to_file): Mind when cfun is null.
        * tree-cfg.c (dump_function_to_file): Mind when cfun is null.
2003-11-18  Diego Novillo  
2003-11-18  Diego Novillo  
        Revert
        Revert
        2003-11-18  Jan Hubicka  
        2003-11-18  Jan Hubicka  
                * tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
                * tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
                * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
                * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
        2003-11-18  Jan Hubicka  
        2003-11-18  Jan Hubicka  
                * Makefile.in (sibcall.o): Kill.
                * Makefile.in (sibcall.o): Kill.
                (tree-tailcall.o): Add except.h dependency
                (tree-tailcall.o): Add except.h dependency
                * sibcall.c: Kill.
                * sibcall.c: Kill.
                (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
                (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
                * calls.c (purge_reg_equiv_notes,
                * calls.c (purge_reg_equiv_notes,
                purge_mem_unchanging_flag) ... here.
                purge_mem_unchanging_flag) ... here.
                (expand_call): Do not produce placeholders; do
                (expand_call): Do not produce placeholders; do
                not deal with tail recursion; update
                not deal with tail recursion; update
                equivalencies after sibcall production.
                equivalencies after sibcall production.
                * toplev.c (rest_of_handle_sibling_calls): Kill.
                * toplev.c (rest_of_handle_sibling_calls): Kill.
                (rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
                (rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
                * tree-dump.c (dump_files): Add tail2
                * tree-dump.c (dump_files): Add tail2
                * tree-flow.h (tree_optimize_tail_calls): Update prototype.
                * tree-flow.h (tree_optimize_tail_calls): Update prototype.
                * tree-optimize.c (optimize_function_tree): Do
                * tree-optimize.c (optimize_function_tree): Do
                tail optimization twice.
                tail optimization twice.
                * tree-tailcall.c: Inlucde except.h
                * tree-tailcall.c: Inlucde except.h
                (suitable_for_tail_call_opt_p): New.
                (suitable_for_tail_call_opt_p): New.
                (optimize_tail_call): Add opt_tailcalls argument;
                (optimize_tail_call): Add opt_tailcalls argument;
                optimize tailcalls.
                optimize tailcalls.
                (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
                (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
                * tree.h (CALL_EXPR_TAILCALL): New.
                * tree.h (CALL_EXPR_TAILCALL): New.
                (tree_dump_index): Add tail2
                (tree_dump_index): Add tail2
2003-11-18  Jan Hubicka  
2003-11-18  Jan Hubicka  
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
        * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
        * tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
2003-11-18  Diego Novillo  
2003-11-18  Diego Novillo  
        * tree-optimize.c (optimize_function_tree): Disable tail
        * tree-optimize.c (optimize_function_tree): Disable tail
        call optimizations.
        call optimizations.
2003-11-18  Jan Hubicka  
2003-11-18  Jan Hubicka  
        * Makefile.in (sibcall.o): Kill.
        * Makefile.in (sibcall.o): Kill.
        (tree-tailcall.o): Add except.h dependency
        (tree-tailcall.o): Add except.h dependency
        * sibcall.c: Kill.
        * sibcall.c: Kill.
        (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
        (purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
        * calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
        * calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
        (expand_call): Do not produce placeholders; do not deal with tail
        (expand_call): Do not produce placeholders; do not deal with tail
        recursion; update equivalencies after sibcall production.
        recursion; update equivalencies after sibcall production.
        * toplev.c (rest_of_handle_sibling_calls): Kill.
        * toplev.c (rest_of_handle_sibling_calls): Kill.
        (rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
        (rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
        * tree-dump.c (dump_files): Add tail2
        * tree-dump.c (dump_files): Add tail2
        * tree-flow.h (tree_optimize_tail_calls): Update prototype.
        * tree-flow.h (tree_optimize_tail_calls): Update prototype.
        * tree-optimize.c (optimize_function_tree): Do tail optimization twice.
        * tree-optimize.c (optimize_function_tree): Do tail optimization twice.
        * tree-tailcall.c: Inlucde except.h
        * tree-tailcall.c: Inlucde except.h
        (suitable_for_tail_call_opt_p): New.
        (suitable_for_tail_call_opt_p): New.
        (optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
        (optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
        (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
        (tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
        * tree.h (CALL_EXPR_TAILCALL): New.
        * tree.h (CALL_EXPR_TAILCALL): New.
        (tree_dump_index): Add tail2
        (tree_dump_index): Add tail2
2003-11-18  Jeff Law  
2003-11-18  Jeff Law  
        * tree-ssa-dom.c (thread_across_edge): Lose block_avail_exprs argument.
        * tree-ssa-dom.c (thread_across_edge): Lose block_avail_exprs argument.
        Callers updated.  Pass NULL for block_avail_exprs in call to
        Callers updated.  Pass NULL for block_avail_exprs in call to
        lookup_avail_expr.  Record both the condition and the inverted
        lookup_avail_expr.  Record both the condition and the inverted
        condition when threading across an edge.
        condition when threading across an edge.
2003-11-18  Richard Henderson  
2003-11-18  Richard Henderson  
        * tree-ssa.c (tree_ssa_useless_type_conversion): Use TYPE_MAIN_VARIANT
        * tree-ssa.c (tree_ssa_useless_type_conversion): Use TYPE_MAIN_VARIANT
        when compariing pointer types too.
        when compariing pointer types too.
2003-11-18  Jan Hubicka  
2003-11-18  Jan Hubicka  
        * tree-dump.c (dump_files): Reorder tail calls.
        * tree-dump.c (dump_files): Reorder tail calls.
        * tree-optimize.c (optimize_function_tree): Likewise
        * tree-optimize.c (optimize_function_tree): Likewise
        * tree-tailcall.c (optimize_tail_call, eliminate_tail_call): Remove
        * tree-tailcall.c (optimize_tail_call, eliminate_tail_call): Remove
        variable tmpvars; update SSA.
        variable tmpvars; update SSA.
        (suitable_for_tail_opt_p): Do not give up because of static variables.
        (suitable_for_tail_opt_p): Do not give up because of static variables.
        (find_tail_calls):  Track return values in SSA graph.
        (find_tail_calls):  Track return values in SSA graph.
        * tree.c (make-phi_node): Do not create new SSA name when operand
        * tree.c (make-phi_node): Do not create new SSA name when operand
        already is.
        already is.
        * tree.h (enum tree_dump_index): Reorder tail call.
        * tree.h (enum tree_dump_index): Reorder tail call.
2003-11-17  Diego Novillo  
2003-11-17  Diego Novillo  
        * gimplify.c (gimplify_call_expr): Change gimple_test_f argument to
        * gimplify.c (gimplify_call_expr): Change gimple_test_f argument to
        return bool type.
        return bool type.
        (mark_decls_volatile_r): New local function.
        (mark_decls_volatile_r): New local function.
        (gimplify_expr): Make gimple_test_f return bool type.
        (gimplify_expr): Make gimple_test_f return bool type.
        Call mark_decls_volatile_r when gimplifying VA_ARG_EXPR.
        Call mark_decls_volatile_r when gimplifying VA_ARG_EXPR.
        * tree-dfa.c (struct walk_state): Remove field is_va_arg_expr.
        * tree-dfa.c (struct walk_state): Remove field is_va_arg_expr.
        Update all callers.
        Update all callers.
        (opf_force_vop): Remove.  Update all users.
        (opf_force_vop): Remove.  Update all users.
        (add_stmt_operand): Re-structure to add real operands only for
        (add_stmt_operand): Re-structure to add real operands only for
        GIMPLE register variables.
        GIMPLE register variables.
        (find_vars_r): Don't handle VA_ARG_EXPR nodes.
        (find_vars_r): Don't handle VA_ARG_EXPR nodes.
        (add_referenced_var): Also assign a UID to variables with hidden
        (add_referenced_var): Also assign a UID to variables with hidden
        uses.
        uses.
        Call is_gimple_call_clobbered to determine if a variable is call
        Call is_gimple_call_clobbered to determine if a variable is call
        clobbered.
        clobbered.
        (get_memory_tag_for): Mark memory tags volatile and static.
        (get_memory_tag_for): Mark memory tags volatile and static.
        * tree-flow.h (struct var_ann_d): Remove field is_in_va_arg_expr.
        * tree-flow.h (struct var_ann_d): Remove field is_in_va_arg_expr.
        Update all users.
        Update all users.
        * tree-simple.c (is_gimple_*): Change return type to bool.  Update
        * tree-simple.c (is_gimple_*): Change return type to bool.  Update
        all users.
        all users.
        (is_gimple_reg_type): Return true only for non aggregate types.
        (is_gimple_reg_type): Return true only for non aggregate types.
        (is_gimple_non_addressable_1): New local function.
        (is_gimple_non_addressable_1): New local function.
        (is_gimple_reg): Call it.
        (is_gimple_reg): Call it.
        (is_gimple_non_addressable): New function.
        (is_gimple_non_addressable): New function.
        (is_gimple_call_clobbered): New function.
        (is_gimple_call_clobbered): New function.
        * tree-simple.h (is_gimple_*): Change return type to bool.
        * tree-simple.h (is_gimple_*): Change return type to bool.
2003-11-17  Jason Merrill  
2003-11-17  Jason Merrill  
        PR c++/11266
        PR c++/11266
        * gimplify.c (gimple_add_tmp_var): Also make sure
        * gimplify.c (gimple_add_tmp_var): Also make sure
        seen_in_bind_expr isn't set.
        seen_in_bind_expr isn't set.
        (mostly_copy_tree_r): Don't copy a TARGET_EXPR.
        (mostly_copy_tree_r): Don't copy a TARGET_EXPR.
        (gimplify_target_expr): Only expand a TARGET_EXPR the first time
        (gimplify_target_expr): Only expand a TARGET_EXPR the first time
        we see it.
        we see it.
2003-11-17  Richard Henderson  
2003-11-17  Richard Henderson  
        * tree-pretty-print.c (dump_generic_node): Use %u not %x for
        * tree-pretty-print.c (dump_generic_node): Use %u not %x for
        printing DECL_UID.
        printing DECL_UID.
2003-11-16  Richard Henderson  
2003-11-16  Richard Henderson  
        * c-common.c (c_add_case_label): Use create_artificial_label.
        * c-common.c (c_add_case_label): Use create_artificial_label.
        * tree-simple.h (create_artificial_label): Move decl ...
        * tree-simple.h (create_artificial_label): Move decl ...
        * tree.h: ... here.
        * tree.h: ... here.
2003-11-16  Richard Henderson  
2003-11-16  Richard Henderson  
        PR c++/12770
        PR c++/12770
        * gimple-low.c (lower_stmt_body): Take a tree, not a tree*.
        * gimple-low.c (lower_stmt_body): Take a tree, not a tree*.
        (lower_stmt): Handle EH nodes.
        (lower_stmt): Handle EH nodes.
        (lower_bind_expr): Remove fixme.
        (lower_bind_expr): Remove fixme.
        (block_may_fallthru): Move from tree-eh.c.  Handle COND_EXPR,
        (block_may_fallthru): Move from tree-eh.c.  Handle COND_EXPR,
        BIND_EXPR, and TRY_FINALLY_EXPR.
        BIND_EXPR, and TRY_FINALLY_EXPR.
        (lower_cond_expr): Use it.
        (lower_cond_expr): Use it.
        * tree-eh.c (collect_finally_tree): Ignore COND_EXPR and BIND_EXPR.
        * tree-eh.c (collect_finally_tree): Ignore COND_EXPR and BIND_EXPR.
        (replace_goto_queue_cond_clause): New.
        (replace_goto_queue_cond_clause): New.
        (replace_goto_queue_1): Use it.  Split out statement_list handling.
        (replace_goto_queue_1): Use it.  Split out statement_list handling.
        (replace_goto_queue_stmt_list): New.
        (replace_goto_queue_stmt_list): New.
        (-block_may_fallthru): Move to gimple-low.c.
        (-block_may_fallthru): Move to gimple-low.c.
        (lower_eh_constructs_1): Ignore BIND_EXPR.
        (lower_eh_constructs_1): Ignore BIND_EXPR.
        * tree-flow.h (block_may_fallthru): Declare.
        * tree-flow.h (block_may_fallthru): Declare.
        * tree-dump.c (dump_files): Exchange .eh and .lower passes.
        * tree-dump.c (dump_files): Exchange .eh and .lower passes.
        * tree-optimize.c (tree_rest_of_compilation): Likewise.
        * tree-optimize.c (tree_rest_of_compilation): Likewise.
        * tree.h (enum tree_dump_index): Likewise.
        * tree.h (enum tree_dump_index): Likewise.
2003-11-16  Jason Merrill  
2003-11-16  Jason Merrill  
        * gimplify.c (mostly_copy_tree_r): Don't walk into a BLOCK.
        * gimplify.c (mostly_copy_tree_r): Don't walk into a BLOCK.
        * tree-inline.c (walk_tree): Don't walk into the BIND_EXPR_VARS
        * tree-inline.c (walk_tree): Don't walk into the BIND_EXPR_VARS
        of a BIND_EXPR.
        of a BIND_EXPR.
        * c-common.c (c_walk_subtrees): Don't walk into the decl of a
        * c-common.c (c_walk_subtrees): Don't walk into the decl of a
        DECL_STMT.
        DECL_STMT.
        PR optimization/11269
        PR optimization/11269
        * dwarf2out.c (gen_subprogram_die): Generate a DIE for a named
        * dwarf2out.c (gen_subprogram_die): Generate a DIE for a named
        return value.
        return value.
        (loc_descriptor_from_tree): Treat RESULT_DECL like VAR_DECL.
        (loc_descriptor_from_tree): Treat RESULT_DECL like VAR_DECL.
        (add_location_or_const_value_attribute): Likewise.
        (add_location_or_const_value_attribute): Likewise.
        (add_bound_info): Likewise.
        (add_bound_info): Likewise.
        (gen_decl_die): Likewise.
        (gen_decl_die): Likewise.
2003-11-16  Jason Merrill  
2003-11-16  Jason Merrill  
        * c-pretty-print.c (debug_c_tree): Restore removed fn.
        * c-pretty-print.c (debug_c_tree): Restore removed fn.
        * diagnostic.h: Declare it.
        * diagnostic.h: Declare it.
        * tree-pretty-print.c (dump_generic_node): Use DECL_UID when
        * tree-pretty-print.c (dump_generic_node): Use DECL_UID when
        dumping anonymous decls.
        dumping anonymous decls.
2003-11-16  Richard Henderson  
2003-11-16  Richard Henderson  
        * tree-cfg.c (last_and_only_stmt): New.
        * tree-cfg.c (last_and_only_stmt): New.
        * tree-flow.h (last_and_only_stmt): Declare.
        * tree-flow.h (last_and_only_stmt): Declare.
        * tree-ssa-dom.c (thread_across_edge): Use it.
        * tree-ssa-dom.c (thread_across_edge): Use it.
        * tree-cfg.c (tree_block_forwards_to): Don't check for empty stmts.
        * tree-cfg.c (tree_block_forwards_to): Don't check for empty stmts.
        (tree_forwarder_block_p): Likewise.
        (tree_forwarder_block_p): Likewise.
        * tree-dfa.c (get_stmt_operands): Likewise.
        * tree-dfa.c (get_stmt_operands): Likewise.
        * tree-ssa-ccp.c (set_rhs): Likewise.
        * tree-ssa-ccp.c (set_rhs): Likewise.
        * tree-ssa-dom.c (optimize_stmt): Likewise.
        * tree-ssa-dom.c (optimize_stmt): Likewise.
        * tree-ssa.c (rewrite_stmt): Likewise.
        * tree-ssa.c (rewrite_stmt): Likewise.
2003-11-16  Richard Henderson  
2003-11-16  Richard Henderson  
        * tree.h (LABEL_DECL_UID): Rename from LABEL_DECL_INDEX.
        * tree.h (LABEL_DECL_UID): Rename from LABEL_DECL_INDEX.
        * tree-flow.h (bsi_remove): Declare.
        * tree-flow.h (bsi_remove): Declare.
        * tree-flow-inline.h (bsi_remove): Move ...
        * tree-flow-inline.h (bsi_remove): Move ...
        * tree-cfg.c (set_bb_for_stmt): Don't re-set LABEL_DECL_UID.
        * tree-cfg.c (set_bb_for_stmt): Don't re-set LABEL_DECL_UID.
        Verify that a label isn't already in a block before adding it.
        Verify that a label isn't already in a block before adding it.
        (bsi_remove): Move from tree-flow-inline.h, clear bb.
        (bsi_remove): Move from tree-flow-inline.h, clear bb.
        * tree-pretty-print.c (dump_generic_node): Use LABEL_DECL_UID if set.
        * tree-pretty-print.c (dump_generic_node): Use LABEL_DECL_UID if set.
2003-11-15  Richard Henderson  
2003-11-15  Richard Henderson  
        * function.c (clear_block_marks): Rename from reorder_blocks_0, export.
        * function.c (clear_block_marks): Rename from reorder_blocks_0, export.
        * function.h (clear_block_marks): Declare.
        * function.h (clear_block_marks): Declare.
        * gimple-low.c (lower_function_body): Use it.
        * gimple-low.c (lower_function_body): Use it.
        (lower_bind_expr): Ensure we don't link blocks into the tree twice.
        (lower_bind_expr): Ensure we don't link blocks into the tree twice.
        * gimplify.c (gimplify_body): Keep old bind_expr at top level if
        * gimplify.c (gimplify_body): Keep old bind_expr at top level if
        possible.
        possible.
2003-11-14  Richard Henderson  
2003-11-14  Richard Henderson  
        * tree-ssa-pre.c (split_critical_edges): Reimplement.  Call
        * tree-ssa-pre.c (split_critical_edges): Reimplement.  Call
        tree_split_edge directly.
        tree_split_edge directly.
2003-11-14  Jason Merrill  
2003-11-14  Jason Merrill  
        * tree-eh.c (do_return_redirection): Assign directly to the
        * tree-eh.c (do_return_redirection): Assign directly to the
        RESULT_DECL of a function which returns in memory.
        RESULT_DECL of a function which returns in memory.
2003-11-14  Daniel Berlin  
2003-11-14  Daniel Berlin  
        * tree-ssa-pre.c (pre_stats): Add ephis_current member.
        * tree-ssa-pre.c (pre_stats): Add ephis_current member.
        (create_ephi_node): Use xmalloc, not ggc_alloc_tree.
        (create_ephi_node): Use xmalloc, not ggc_alloc_tree.
        (clear_all_eref_arrays): Free the ephis here.
        (clear_all_eref_arrays): Free the ephis here.
        (expr_phi_insertion): Don't append the ephis to the erefs array.
        (expr_phi_insertion): Don't append the ephis to the erefs array.
        (insert_occ_in_preorder_dt_order): Move building/freeing of dfn
        (insert_occ_in_preorder_dt_order): Move building/freeing of dfn
        array so that it only occurs once per function..
        array so that it only occurs once per function..
        (rename_1): Ditto on the dfs_id array.
        (rename_1): Ditto on the dfs_id array.
        (ephi_use_pool): New alloc pool.
        (ephi_use_pool): New alloc pool.
        (add_ephi_use): Pool allocate these things, rather than
        (add_ephi_use): Pool allocate these things, rather than
        ggc_alloc'ing them.
        ggc_alloc'ing them.
        (insert_euse_in_preorder_dt_order_1): Use ephi_at_block to put the
        (insert_euse_in_preorder_dt_order_1): Use ephi_at_block to put the
        ephi in the list.
        ephi in the list.
        (pre_expression): Don't PRE when we only have 1 occurrence.
        (pre_expression): Don't PRE when we only have 1 occurrence.
        (expr_lexically_eq): Make inline.
        (expr_lexically_eq): Make inline.
        (names_match_p): Move closer to first use.
        (names_match_p): Move closer to first use.
        (tree_perform_ssapre): Alloc and free the ephi_use_pool.
        (tree_perform_ssapre): Alloc and free the ephi_use_pool.
        Make stat printing per-expression.
        Make stat printing per-expression.
        Add checking that we freed all ephis.
        Add checking that we freed all ephis.
2003-11-14  Andrew MacLeod  
2003-11-14  Andrew MacLeod  
        * common.opt (ftree-ter): Document new option.
        * common.opt (ftree-ter): Document new option.
        * flags.h (flag_tree_ter): Add new flag.
        * flags.h (flag_tree_ter): Add new flag.
        * fold-const.c (invert_truthvalue): Don't ignore cast to BOOLEAN_TYPE.
        * fold-const.c (invert_truthvalue): Don't ignore cast to BOOLEAN_TYPE.
        * opts.c (decode_options): Option -ftree-ter defaults to on.
        * opts.c (decode_options): Option -ftree-ter defaults to on.
        (common_handle_option): Add processing for flag_tree_ter.
        (common_handle_option): Add processing for flag_tree_ter.
        * toplev.c (flag_tree_ter): Initialize to 0.
        * toplev.c (flag_tree_ter): Initialize to 0.
        (lang_independent_options f_): Add -ftree-ter flag.
        (lang_independent_options f_): Add -ftree-ter flag.
        * tree-ssa-live.c (init_var_map): Initialize ref_count to 0.
        * tree-ssa-live.c (init_var_map): Initialize ref_count to 0.
        (delete_var_map): Free ref count if allocated.
        (delete_var_map): Free ref count if allocated.
        (register_ssa_partition): Add "is_use" parameter for reference counting.
        (register_ssa_partition): Add "is_use" parameter for reference counting.
        (create_ssa_var_map): Add flag and code for calculating ref counts.
        (create_ssa_var_map): Add flag and code for calculating ref counts.
        * tree-ssa-live.h (struct _var_map): Add ref_count field.
        * tree-ssa-live.h (struct _var_map): Add ref_count field.
        (SSA_VAR_MAP_REF_COUNT): Define flag.
        (SSA_VAR_MAP_REF_COUNT): Define flag.
        (version_ref_count): Function to retreive ref_count.
        (version_ref_count): Function to retreive ref_count.
        * tree-ssa.c (replace_variable): If an expression vector is passed in,
        * tree-ssa.c (replace_variable): If an expression vector is passed in,
        use replacement expression instead of mapped variable when available.
        use replacement expression instead of mapped variable when available.
        (struct value_expr_d): New structure for value lists.
        (struct value_expr_d): New structure for value lists.
        (struct temp_expr_table_d): Structure used to build an expression
        (struct temp_expr_table_d): Structure used to build an expression
        replacement table.
        replacement table.
        (new_temp_expr_table): New. Create a new TER (Temporary Expression
        (new_temp_expr_table): New. Create a new TER (Temporary Expression
        Replacement) table.
        Replacement) table.
        (free_temp_expr_table): New. Free a TER table.
        (free_temp_expr_table): New. Free a TER table.
        (new_value_expr): New. Allocate a value list element.
        (new_value_expr): New. Allocate a value list element.
        (free_value_expr): New. Free a value list element.
        (free_value_expr): New. Free a value list element.
        (find_value_in_list): New. Find a value in a list.
        (find_value_in_list): New. Find a value in a list.
        (add_value_to_list): New. Add a value to a list if not already present.
        (add_value_to_list): New. Add a value to a list if not already present.
        (remove_value_from_list): New. Remove a value from a list.
        (remove_value_from_list): New. Remove a value from a list.
        (add_dependance): New. Add a dependency to an expression.
        (add_dependance): New. Add a dependency to an expression.
        (check_replaceable): New. Check if a stmt is a candidate for TER. Add
        (check_replaceable): New. Check if a stmt is a candidate for TER. Add
        to active list and create dependancies if so.
        to active list and create dependancies if so.
        (finish_expr): New. Remove an expression from TER consideration.
        (finish_expr): New. Remove an expression from TER consideration.
        (mark_replaceable): New. Finish a TER expression as a valid replacement.
        (mark_replaceable): New. Finish a TER expression as a valid replacement.
        (kill_expr): New. Finish dependent TER expressions as not replaceable.
        (kill_expr): New. Finish dependent TER expressions as not replaceable.
        (kill_virtual_exprs): New. Finish any TER expressions dependent on a
        (kill_virtual_exprs): New. Finish any TER expressions dependent on a
        virtual operand as not replaceable.
        virtual operand as not replaceable.
        (find_replaceable_in_bb): New. Process a basic block for TER expression.
        (find_replaceable_in_bb): New. Process a basic block for TER expression.
        (find_replaceable_exprs): New. Entry point for TER expression finder.
        (find_replaceable_exprs): New. Entry point for TER expression finder.
        (dump_replaceable_exprs): New. output list of replaceable expressions.
        (dump_replaceable_exprs): New. output list of replaceable expressions.
        (rewrite_out_of_ssa): Build TER table if requested, and use it.
        (rewrite_out_of_ssa): Build TER table if requested, and use it.
2003-11-14  Andreas Jaeger  
2003-11-14  Andreas Jaeger  
        * c-semantics.c (find_reachable_label): Use C90 function
        * c-semantics.c (find_reachable_label): Use C90 function
        declaration.
        declaration.
2003-11-14  Jason Merrill  
2003-11-14  Jason Merrill  
        PR middle-end/12526
        PR middle-end/12526
        * tree-cfg.c (call_expr_flags): Move to calls.c.
        * tree-cfg.c (call_expr_flags): Move to calls.c.
        * tree-flow.h: Move prototype to tree.h.
        * tree-flow.h: Move prototype to tree.h.
        PR c++/13033
        PR c++/13033
        * c-simplify.c (gimplify_c_loop): Wrap the increment in a
        * c-simplify.c (gimplify_c_loop): Wrap the increment in a
        CLEANUP_POINT_EXPR.
        CLEANUP_POINT_EXPR.
        * tree-dfa.c (get_stmt_operands) : A memory clobber
        * tree-dfa.c (get_stmt_operands) : A memory clobber
        clobbers all call-clobbered variables.   Clobber clobber.
        clobbers all call-clobbered variables.   Clobber clobber.
        * gimplify.c (canonicalize_component_ref): Remove redundant call
        * gimplify.c (canonicalize_component_ref): Remove redundant call
        to recalculate_side_effects.
        to recalculate_side_effects.
2003-11-14  Richard Henderson  
2003-11-14  Richard Henderson  
        PR c++/12751
        PR c++/12751
        * tree-eh.c (struct leh_tf_state): Add outer.
        * tree-eh.c (struct leh_tf_state): Add outer.
        (lower_try_finally, lower_cleanup): Set it.
        (lower_try_finally, lower_cleanup): Set it.
        (lower_try_finally_fallthru_label): New.
        (lower_try_finally_fallthru_label): New.
        (honor_protect_cleanup_actions): Use it.
        (honor_protect_cleanup_actions): Use it.
        (lower_try_finally_copy, lower_try_finally_switch): Likewise.
        (lower_try_finally_copy, lower_try_finally_switch): Likewise.
        * tree-eh.c (collect_finally_tree): Complete manual tailrecurse
        * tree-eh.c (collect_finally_tree): Complete manual tailrecurse
        transformation.
        transformation.
2003-11-14  Richard Henderson  
2003-11-14  Richard Henderson  
        * gimplify.c (voidify_wrapper_expr): Don't clobber TREE_TYPE of
        * gimplify.c (voidify_wrapper_expr): Don't clobber TREE_TYPE of
        statements in a STATEMENT_LIST.  Be prepared for an empty list.
        statements in a STATEMENT_LIST.  Be prepared for an empty list.
2003-11-14  Steven Bosscher  
2003-11-14  Steven Bosscher  
        * jump.c (never_reached_warning): Remove function.
        * jump.c (never_reached_warning): Remove function.
        * rtl.h (never_reached_warning): Don't declare it.
        * rtl.h (never_reached_warning): Don't declare it.
        * cfgrtl.c (never_reached_warning): Don't call it.
        * cfgrtl.c (never_reached_warning): Don't call it.
        * cse.c (never_reached_warning): Ditto.
        * cse.c (never_reached_warning): Ditto.
2003-11-13  Jeff Law  
2003-11-13  Jeff Law  
        * tree-cfg.c (bsi_replace): Restore accidentally removed code.
        * tree-cfg.c (bsi_replace): Restore accidentally removed code.
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Also detect useless
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Also detect useless
        var->var copies created by the out-of-ssa translation.
        var->var copies created by the out-of-ssa translation.
2003-11-13  Steven Bosscher  
2003-11-13  Steven Bosscher  
        PR middle-end/11514
        PR middle-end/11514
        * tree-inline.c (walk_tree): Handle PLACEHOLDER_EXPR.
        * tree-inline.c (walk_tree): Handle PLACEHOLDER_EXPR.
2003-11-13  Richard Henderson  
2003-11-13  Richard Henderson  
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Initialize stmt.
        * tree-cfg.c (cfg_remove_useless_stmts_bb): Initialize stmt.
2003-11-13  Jan Hubicka  
2003-11-13  Jan Hubicka  
        * calls.c (special_function_p): Do not check for ECF_MALLOC.
        * calls.c (special_function_p): Do not check for ECF_MALLOC.
        (flags_from_decl_or_type):  Use special_function_p.
        (flags_from_decl_or_type):  Use special_function_p.
        (expand_call): Remove call to special_function_p.
        (expand_call): Remove call to special_function_p.
        * tree-cfg.c (notice_special_calls, clear_special_calls): New functions.
        * tree-cfg.c (notice_special_calls, clear_special_calls): New functions.
        (remove_useless_stmts): Use clear_special_calls.
        (remove_useless_stmts): Use clear_special_calls.
        (remove_useless_stmts_1): Use notice_special_calls.
        (remove_useless_stmts_1): Use notice_special_calls.
        * tree-flow.h (notice_special_calls, clear_special_calls): New functions.
        * tree-flow.h (notice_special_calls, clear_special_calls): New functions.
        * tree-ssa-dce.c (remove_dead_stmts): Use clear_special_calls and
        * tree-ssa-dce.c (remove_dead_stmts): Use clear_special_calls and
        notice_special_calls..
        notice_special_calls..
        * gimplify.c (gimplify_expr): Check labels.
        * gimplify.c (gimplify_expr): Check labels.
        * tree-cfg.c (tree_verify_flow_info): Check labels.
        * tree-cfg.c (tree_verify_flow_info): Check labels.
        * tree-cfg.c (make_exit_edges): Do not create edges for const
        * tree-cfg.c (make_exit_edges): Do not create edges for const
        functions.
        functions.
        (update_call_expr_flags): Fix.
        (update_call_expr_flags): Fix.
2003-11-12  Diego Novillo  
2003-11-12  Diego Novillo  
        (declare_inlined_vars): New local function.
        (declare_inlined_vars): New local function.
        (initialize_inlined_parameters): Call it.
        (initialize_inlined_parameters): Call it.
        (expand_call_inline): Call it.
        (expand_call_inline): Call it.
2003-11-13  Steven Bosscher  
2003-11-13  Steven Bosscher  
        PR optimization/12640
        PR optimization/12640
        * tree-ssa-ccp.c (get_strlen): Don't follow the UD chain
        * tree-ssa-ccp.c (get_strlen): Don't follow the UD chain
        of a PHI argument if the DEF stmt for the argument is
        of a PHI argument if the DEF stmt for the argument is
        the PHI itself.
        the PHI itself.
2003-11-12  Zdenek Dvorak  
2003-11-12  Zdenek Dvorak  
            Jeff Law  
            Jeff Law  
        * tree-cfg.c (cfg_remove_useless_stmts): New function.
        * tree-cfg.c (cfg_remove_useless_stmts): New function.
        (cfg_remove_useless_stmts_bb): Likewise.
        (cfg_remove_useless_stmts_bb): Likewise.
        * tree-flow.h (cfg_remove_useless_stmts): Prototype.
        * tree-flow.h (cfg_remove_useless_stmts): Prototype.
        * tree-ssa.c (rewrite_out_of_ssa): Use cfg_remove_useless_stmts
        * tree-ssa.c (rewrite_out_of_ssa): Use cfg_remove_useless_stmts
        instead of remove_useless_stmts.
        instead of remove_useless_stmts.
2003-11-12  Richard Henderson  
2003-11-12  Richard Henderson  
        * Makefile.in (OBJS-common): Add tree-iterator.o.
        * Makefile.in (OBJS-common): Add tree-iterator.o.
        (expr.o): Depend on tree-iterator.h.
        (expr.o): Depend on tree-iterator.h.
        (GTFILES): Add tree-iterator.c.
        (GTFILES): Add tree-iterator.c.
        * basic-block.h (struct basic_block_def): Replace head_tree_p
        * basic-block.h (struct basic_block_def): Replace head_tree_p
        and end_tree_p with stmt_list.
        and end_tree_p with stmt_list.
        (tree_bb_root): New.
        (tree_bb_root): New.
        (create_bb): Don't declare.
        (create_bb): Don't declare.
        * c-common.c (c_warn_unused_result): Handle STATEMENT_LIST.
        * c-common.c (c_warn_unused_result): Handle STATEMENT_LIST.
        * c-simplify.c (c_gimplify_stmt): Don't rationalize_compound_expr.
        * c-simplify.c (c_gimplify_stmt): Don't rationalize_compound_expr.
        * cfg.c (entry_exit_blocks): Adjust for member changes.
        * cfg.c (entry_exit_blocks): Adjust for member changes.
        (compact_blocks): Manage tree_bb_root.
        (compact_blocks): Manage tree_bb_root.
        * expr.c (expand_expr_1): Handle STATEMENT_LIST.
        * expr.c (expand_expr_1): Handle STATEMENT_LIST.
        * gimple-low.c: Update for tree_stmt_iterator changes.
        * gimple-low.c: Update for tree_stmt_iterator changes.
        (lower_cond_expr): Use expr_only.  Notice empty conditionals.
        (lower_cond_expr): Use expr_only.  Notice empty conditionals.
        * gimplify.c (append_to_statement_list_1): Create and
        * gimplify.c (append_to_statement_list_1): Create and
        manage statement_list nodes.
        manage statement_list nodes.
        (foreach_stmt): Remove.
        (foreach_stmt): Remove.
        (wfl_locus): Remove.
        (wfl_locus): Remove.
        (annotate_all_with_locus_1): Merge into...
        (annotate_all_with_locus_1): Merge into...
        (annotate_all_with_locus): ... here.  Iterate over the
        (annotate_all_with_locus): ... here.  Iterate over the
        statement list directly.
        statement list directly.
        (voidify_wrapper_expr): Handle STATEMENT_LIST.
        (voidify_wrapper_expr): Handle STATEMENT_LIST.
        (gimplify_return_expr): Likewise.
        (gimplify_return_expr): Likewise.
        (gimplify_loop_expr): Likewise.
        (gimplify_loop_expr): Likewise.
        (shortcut_cond_r, shortcut_cond_expr): Likewise.
        (shortcut_cond_r, shortcut_cond_expr): Likewise.
        (gimplify_cleanup_point_expr): Likewise.
        (gimplify_cleanup_point_expr): Likewise.
        (gimple_build_eh_filter): Create statement list bodies.
        (gimple_build_eh_filter): Create statement list bodies.
        (gimplify_bind_expr): Likewise.
        (gimplify_bind_expr): Likewise.
        (gimplify_switch_expr): Likewise.
        (gimplify_switch_expr): Likewise.
        (gimplify_cond_expr): Likewise.
        (gimplify_cond_expr): Likewise.
        (gimplify_compound_expr): Handle void expressions as well.
        (gimplify_compound_expr): Handle void expressions as well.
        (gimplify_statement_list): New.
        (gimplify_statement_list): New.
        (gimple_push_cleanup): Gimplify the WITH_CLEANUP_EXPR operand.
        (gimple_push_cleanup): Gimplify the WITH_CLEANUP_EXPR operand.
        (gimplify_stmt): Ensure non-null result.
        (gimplify_stmt): Ensure non-null result.
        (gimplify_to_stmt_list): New.
        (gimplify_to_stmt_list): New.
        (gimplify_expr): Use gimplify_compound_expr, gimplify_statement_list,
        (gimplify_expr): Use gimplify_compound_expr, gimplify_statement_list,
        gimplify_to_stmt_list as appropriate.
        gimplify_to_stmt_list as appropriate.
        (gimplify_body): Fix creation of outer BIND_EXPR.
        (gimplify_body): Fix creation of outer BIND_EXPR.
        * tree-cfg.c (tree_bb_root): New.
        * tree-cfg.c (tree_bb_root): New.
        (build_tree_cfg): Initialize it.  Update for make_blocks changes.
        (build_tree_cfg): Initialize it.  Update for make_blocks changes.
        (factor_computed_gotos): Use create_bb directly.
        (factor_computed_gotos): Use create_bb directly.
        (make_blocks): Rewrite to use statement lists.
        (make_blocks): Rewrite to use statement lists.
        (append_stmt_to_bb, prepend_stmt_to_bb): Remove.
        (append_stmt_to_bb, prepend_stmt_to_bb): Remove.
        (create_bb): Make static.  Add stmt_list argument.  Don't allow
        (create_bb): Make static.  Add stmt_list argument.  Don't allow
        null after argument.  Set tree_bb_root.
        null after argument.  Set tree_bb_root.
        (make_edges): ENTRY block successor is FALLTHRU.
        (make_edges): ENTRY block successor is FALLTHRU.
        (remove_useless_stmts_warn_notreached): Handle STATEMENT_LIST.
        (remove_useless_stmts_warn_notreached): Handle STATEMENT_LIST.
        (struct rus_data): Add last_goto.
        (struct rus_data): Add last_goto.
        (remove_useless_stmts_cond): Clear it.  Zap empty conditionals.
        (remove_useless_stmts_cond): Clear it.  Zap empty conditionals.
        Use expr_only for simple statment elimination.
        Use expr_only for simple statment elimination.
        (remove_useless_stmts_tf): Clear last_goto.  Use TREE_SIDE_EFFECTS
        (remove_useless_stmts_tf): Clear last_goto.  Use TREE_SIDE_EFFECTS
        instead of IS_EMPTY_STMT.  Use append_to_statement_list instead of
        instead of IS_EMPTY_STMT.  Use append_to_statement_list instead of
        munging to COMPOUND_EXPR.
        munging to COMPOUND_EXPR.
        (remove_useless_stmts_tc): Clear last_goto.  Use TREE_SIDE_EFFECTS.
        (remove_useless_stmts_tc): Clear last_goto.  Use TREE_SIDE_EFFECTS.
        (remove_useless_stmts_goto): Set last_goto.
        (remove_useless_stmts_goto): Set last_goto.
        (remove_useless_stmts_label): New.  Kill goto-next-label.
        (remove_useless_stmts_label): New.  Kill goto-next-label.
        (remove_useless_stmts_1): Reorg to handle STATEMENT_LIST.
        (remove_useless_stmts_1): Reorg to handle STATEMENT_LIST.
        (remove_bb): Simplify block removal.
        (remove_bb): Simplify block removal.
        (remove_bsi_from_block): Kill.
        (remove_bsi_from_block): Kill.
        (tree_block_forwards_to): Tidy bsi loops.  Do not create
        (tree_block_forwards_to): Tidy bsi loops.  Do not create
        block label here.
        block label here.
        (tree_cfg2dot): Update for bb->stmt_list.
        (tree_cfg2dot): Update for bb->stmt_list.
        (delete_tree_cfg): Clear tree_bb_root.
        (delete_tree_cfg): Clear tree_bb_root.
        (set_bb_for_stmt): Handle STATEMENT_LISTs.
        (set_bb_for_stmt): Handle STATEMENT_LISTs.
        (bsi_insert_before, bsi_insert_after): Re-implement on TSIs.
        (bsi_insert_before, bsi_insert_after): Re-implement on TSIs.
        (bsi_move_after, bsi_move_before, bsi_move_to_bb_end): Likewise.
        (bsi_move_after, bsi_move_before, bsi_move_to_bb_end): Likewise.
        (bsi_replace): Likewise.
        (bsi_replace): Likewise.
        (tree_find_edge_insert_loc): New, split from ...
        (tree_find_edge_insert_loc): New, split from ...
        (bsi_insert_on_edge_immediate): ... here.
        (bsi_insert_on_edge_immediate): ... here.
        (bsi_commit_edge_inserts): Use it.  Add all stmts at once.
        (bsi_commit_edge_inserts): Use it.  Add all stmts at once.
        (bsi_insert_on_edge): Use statement lists.
        (bsi_insert_on_edge): Use statement lists.
        (tree_split_edge): Position new block correctly.  Deal with
        (tree_split_edge): Position new block correctly.  Deal with
        fallthrough to EXIT.
        fallthrough to EXIT.
        (tree_verify_flow_info): Do not check block order vs statement chain.
        (tree_verify_flow_info): Do not check block order vs statement chain.
        (tree_make_forwarder_block): Update create_bb call, fix edge flags.
        (tree_make_forwarder_block): Update create_bb call, fix edge flags.
        (thread_jumps): Call tree_redirect_edge_and_branch directly.
        (thread_jumps): Call tree_redirect_edge_and_branch directly.
        (tree_block_label): Don't return a NONLOCAL_LABEL.
        (tree_block_label): Don't return a NONLOCAL_LABEL.
        (tree_redirect_edge_and_branch_1): Rename from s/_1//.  Take an
        (tree_redirect_edge_and_branch_1): Rename from s/_1//.  Take an
        argument to use ssa_redirect_edge or redirect_edge_succ.  Use
        argument to use ssa_redirect_edge or redirect_edge_succ.  Use
        tree_split_edge instead of bsi_insert_on_edge_immediate.
        tree_split_edge instead of bsi_insert_on_edge_immediate.
        (tree_redirect_edge_and_branch): New.
        (tree_redirect_edge_and_branch): New.
        (remove_stmt, first_exec_stmt, bsi_init, bsi_next_in_bb): Kill.
        (remove_stmt, first_exec_stmt, bsi_init, bsi_next_in_bb): Kill.
        (bsi_start, bsi_last, bsi_prev, bsi_from_tsi): Kill.
        (bsi_start, bsi_last, bsi_prev, bsi_from_tsi): Kill.
        (bsi_update_from_tsi, bsi_link_after): Kill.
        (bsi_update_from_tsi, bsi_link_after): Kill.
        * tree-eh.c (collect_finally_tree): Handle STATEMENT_LIST.
        * tree-eh.c (collect_finally_tree): Handle STATEMENT_LIST.
        (replace_goto_queue_1): Likewise.
        (replace_goto_queue_1): Likewise.
        (replace_goto_queue): Don't use walk_tree.
        (replace_goto_queue): Don't use walk_tree.
        (do_return_redirection): Create statement lists.
        (do_return_redirection): Create statement lists.
        (do_goto_redirection): Likewise.
        (do_goto_redirection): Likewise.
        (block_may_fallthru_last): Fold into...
        (block_may_fallthru_last): Fold into...
        (block_may_fallthru): ... here.
        (block_may_fallthru): ... here.
        (frob_into_branch_around): Use append_to_statement_list.
        (frob_into_branch_around): Use append_to_statement_list.
        (honor_protect_cleanup_actions): Likewise.
        (honor_protect_cleanup_actions): Likewise.
        (lower_try_finally_nofallthru): Likewise.
        (lower_try_finally_nofallthru): Likewise.
        (lower_try_finally_onedest): Likewise.
        (lower_try_finally_onedest): Likewise.
        (lower_try_finally_copy): Likewise.
        (lower_try_finally_copy): Likewise.
        (lower_try_finally_switch): Likewise.
        (lower_try_finally_switch): Likewise.
        (lower_try_finally): Likewise.
        (lower_try_finally): Likewise.
        (lower_catch): Likewise.
        (lower_catch): Likewise.
        (lower_eh_filter): Likewise.
        (lower_eh_filter): Likewise.
        (lower_eh_constructs_1): Handle STATEMENT_LIST.
        (lower_eh_constructs_1): Handle STATEMENT_LIST.
        * tree-flow-inline.h (BSI_NUM_ELEMENTS, bsi_list_p): Remove.
        * tree-flow-inline.h (BSI_NUM_ELEMENTS, bsi_list_p): Remove.
        (new_bsi_list, empty_bsi_stack, FOR_EACH_BSI_IN_REVERSE): Remove.
        (new_bsi_list, empty_bsi_stack, FOR_EACH_BSI_IN_REVERSE): Remove.
        (FOR_EACH_STMT_IN_REVERSE): Remove.
        (FOR_EACH_STMT_IN_REVERSE): Remove.
        (bsi_start, bsi_last, bsi_end_p): Re-implement based on TSIs.
        (bsi_start, bsi_last, bsi_end_p): Re-implement based on TSIs.
        (bsi_next, bsi_prev, bsi_stmt, bsi_stmt_ptr, bsi_remove): Likewise.
        (bsi_next, bsi_prev, bsi_stmt, bsi_stmt_ptr, bsi_remove): Likewise.
        * tree-flow.h (block_stmt_iterator): Likewise.
        * tree-flow.h (block_stmt_iterator): Likewise.
        * tree-inline.c (copy_statement_list): New.
        * tree-inline.c (copy_statement_list): New.
        (copy_body_r): Use it, and append_to_statement_list.
        (copy_body_r): Use it, and append_to_statement_list.
        (initialize_inlined_parameters): Use append_to_statement_list.
        (initialize_inlined_parameters): Use append_to_statement_list.
        (expand_call_inline): Likewise.
        (expand_call_inline): Likewise.
        (gimple_expand_calls_inline): New.
        (gimple_expand_calls_inline): New.
        (expand_calls_inline): Use it.
        (expand_calls_inline): Use it.
        (walk_tree, unsave_r): Handle STATEMENT_LIST.
        (walk_tree, unsave_r): Handle STATEMENT_LIST.
        (add_stmt_to_compound): Remove.
        (add_stmt_to_compound): Remove.
        * tree-iterator.c: New file.
        * tree-iterator.c: New file.
        * tree-iterator.h: Re-implement based on STATEMENT_LIST.
        * tree-iterator.h: Re-implement based on STATEMENT_LIST.
        * tree-mudflap.c (mf_decl_cache_locals): Don't
        * tree-mudflap.c (mf_decl_cache_locals): Don't
        rationalize_compound_expr.
        rationalize_compound_expr.
        * tree-optimize.c (optimize_function_tree): Make static.
        * tree-optimize.c (optimize_function_tree): Make static.
        Rechain statements from blocks before deleting the cfg.
        Rechain statements from blocks before deleting the cfg.
        * tree-pretty-print.c (dump_generic_node): Handle STATEMENT_LIST,
        * tree-pretty-print.c (dump_generic_node): Handle STATEMENT_LIST,
        update for change in tree_stmt_iterator wrt COMPOUND_EXPR.
        update for change in tree_stmt_iterator wrt COMPOUND_EXPR.
        (dump_generic_node): Dump lowered COND_EXPR on a single line.
        (dump_generic_node): Dump lowered COND_EXPR on a single line.
        * tree-simple.c (is_gimple_stmt): Handle STATEMENT_LIST.
        * tree-simple.c (is_gimple_stmt): Handle STATEMENT_LIST.
        * tree-simple.h (foreach_stmt_fn, foreach_stmt): Remove.
        * tree-simple.h (foreach_stmt_fn, foreach_stmt): Remove.
        (gimplify_to_stmt_list): Declare.
        (gimplify_to_stmt_list): Declare.
        (alloc_stmt_list, free_stmt_list): Declare.
        (alloc_stmt_list, free_stmt_list): Declare.
        * tree-ssa-dce.c (should_remove_dead_stmt): Rename from
        * tree-ssa-dce.c (should_remove_dead_stmt): Rename from
        remove_dead_stmt; return bool if statement should be removed.
        remove_dead_stmt; return bool if statement should be removed.
        (remove_dead_stmts): Update to match.
        (remove_dead_stmts): Update to match.
        * tree-ssa-live.c (build_tree_conflict_graph): Don't use
        * tree-ssa-live.c (build_tree_conflict_graph): Don't use
        FOR_EACH_STMT_IN_REVERSE.
        FOR_EACH_STMT_IN_REVERSE.
        * tree-ssa-pre.c (reaching_def): Tidy BSI usage.
        * tree-ssa-pre.c (reaching_def): Tidy BSI usage.
        (insert_one_operand, collect_expressions): Likewise.
        (insert_one_operand, collect_expressions): Likewise.
        * tree.c (tree_size): Handle STATEMENT_LIST.
        * tree.c (tree_size): Handle STATEMENT_LIST.
        (copy_node): Abort on STATEMENT_LIST.
        (copy_node): Abort on STATEMENT_LIST.
        (expr_first, expr_last): Move to tree-iterator.c.
        (expr_first, expr_last): Move to tree-iterator.c.
        (expr_length): Remove.
        (expr_length): Remove.
        (tree_node_structure): Handle STATEMENT_LIST.
        (tree_node_structure): Handle STATEMENT_LIST.
        (tsi_link_before, tsi_link_after, tsi_delink): Move to tree-iterator.c.
        (tsi_link_before, tsi_link_after, tsi_delink): Move to tree-iterator.c.
        (tsi_link_chain_before, tsi_link_chain_after): Merge into non-chain.
        (tsi_link_chain_before, tsi_link_chain_after): Merge into non-chain.
        (tsi_new_stmt_list, tsi_stmt_list_head, body_is_empty): Kill.
        (tsi_new_stmt_list, tsi_stmt_list_head, body_is_empty): Kill.
        * tree.def (STATEMENT_LIST): New.
        * tree.def (STATEMENT_LIST): New.
        * tree.h (STATEMENT_LIST_HEAD, STATEMENT_LIST_TAIL): New.
        * tree.h (STATEMENT_LIST_HEAD, STATEMENT_LIST_TAIL): New.
        (struct tree_statement_list_node): New.
        (struct tree_statement_list_node): New.
        (struct tree_statement_list): New.
        (struct tree_statement_list): New.
        (enum tree_node_structure_enum): Add TS_STATEMENT_LIST.
        (enum tree_node_structure_enum): Add TS_STATEMENT_LIST.
        (union tree_node): Add stmt_list.
        (union tree_node): Add stmt_list.
        (expr_length): Remove.
        (expr_length): Remove.
        (expr_only): New.
        (expr_only): New.
        (add_to_compound_expr, body_is_empty): Remove.
        (add_to_compound_expr, body_is_empty): Remove.
        (optimize_function_tree): Remove.
        (optimize_function_tree): Remove.
2003-11-12  Zdenek Dvorak  
2003-11-12  Zdenek Dvorak  
        * tree-flow.h (remove_useless_vars): Declare.
        * tree-flow.h (remove_useless_vars): Declare.
        (expand_var_p): Declaration removed.
        (expand_var_p): Declaration removed.
        * tree-ssa.c (rewrite_out_of_ssa): Call remove_useless_vars.
        * tree-ssa.c (rewrite_out_of_ssa): Call remove_useless_vars.
        * tree-cfg.c (dump_function_to_file): Update dumping of variables.
        * tree-cfg.c (dump_function_to_file): Update dumping of variables.
        * gimple-low.c (expand_var_p): Made static.
        * gimple-low.c (expand_var_p): Made static.
        (remove_useless_vars): New.
        (remove_useless_vars): New.
        (expand_used_vars): Expand all variables in the
        (expand_used_vars): Expand all variables in the
        cfun->unexpanded_var_list.
        cfun->unexpanded_var_list.
2003-11-11  Richard Henderson  
2003-11-11  Richard Henderson  
        * c-common.c (c_gimplify_stmt): Fix botched removal of
        * c-common.c (c_gimplify_stmt): Fix botched removal of
        rationalize_compound_expr calls.
        rationalize_compound_expr calls.
        * c-semantics.c (build_stmt): Set TREE_SIDE_EFFECTS.
        * c-semantics.c (build_stmt): Set TREE_SIDE_EFFECTS.
        * c-simplify.c (c_gimplify_stmt): Return a gimplify_status;
        * c-simplify.c (c_gimplify_stmt): Return a gimplify_status;
        mind the status from subroutines to avoid re-gimplification.
        mind the status from subroutines to avoid re-gimplification.
        (c_build_bind_expr): Do not call gimplify_stmt.
        (c_build_bind_expr): Do not call gimplify_stmt.
        (gimplify_c_loop): Don't create a loop_expr; fully gimplify.
        (gimplify_c_loop): Don't create a loop_expr; fully gimplify.
        (gimplify_block, gimplify_cleanup, gimplify_expr_stmt,
        (gimplify_block, gimplify_cleanup, gimplify_expr_stmt,
        gimplify_for_stmt, gimplify_while_stmt, gimplify_do_stmt,
        gimplify_for_stmt, gimplify_while_stmt, gimplify_do_stmt,
        gimplify_if_stmt, gimplify_switch_stmt, gimplify_return_stmt,
        gimplify_if_stmt, gimplify_switch_stmt, gimplify_return_stmt,
        gimplify_decl_stmt, gimplify_compound_literal_expr,
        gimplify_decl_stmt, gimplify_compound_literal_expr,
        gimplify_stmt_expr): Return a gimplify_status.  In most cases,
        gimplify_stmt_expr): Return a gimplify_status.  In most cases,
        don't do local gimplification of sub-structures.
        don't do local gimplification of sub-structures.
        (gimplify_decl_stmt): Use append_to_compound_expr when we care
        (gimplify_decl_stmt): Use append_to_compound_expr when we care
        about the result value.
        about the result value.
        (gimplify_stmt_expr): Use append_to_statement_list_force and
        (gimplify_stmt_expr): Use append_to_statement_list_force and
        re-gimplify so that voidify_wrapper_expr can work.
        re-gimplify so that voidify_wrapper_expr can work.
        (finish_bc_block): Don't append to a non-list.
        (finish_bc_block): Don't append to a non-list.
        (c_gimplify_expr): Pass back the gimplify_status of subroutines.
        (c_gimplify_expr): Pass back the gimplify_status of subroutines.
        * c-common.h (c_gimplify_stmt): Update decl.
        * c-common.h (c_gimplify_stmt): Update decl.
        * gimplify.c (append_to_statement_list_1): Make sure list_p is
        * gimplify.c (append_to_statement_list_1): Make sure list_p is
        never null after call.
        never null after call.
        (append_to_compound_expr): New.
        (append_to_compound_expr): New.
        * tree-simple.h (append_to_compound_expr): Declare.
        * tree-simple.h (append_to_compound_expr): Declare.
2003-11-11  Richard Henderson  
2003-11-11  Richard Henderson  
        * gimplify.c (gimplify_addr_expr): Clear, not copy, TREE_SIDE_EFFECTS.
        * gimplify.c (gimplify_addr_expr): Clear, not copy, TREE_SIDE_EFFECTS.
2003-11-11  Richard Henderson  
2003-11-11  Richard Henderson  
        PR c/13014
        PR c/13014
        * c-simplify.c (gimplify_if_stmt): Remove short circuit.
        * c-simplify.c (gimplify_if_stmt): Remove short circuit.
        * tree-cfg.c (struct rus_data): Add has_label.
        * tree-cfg.c (struct rus_data): Add has_label.
        (remove_useless_stmts_warn_notreached): New.
        (remove_useless_stmts_warn_notreached): New.
        (remove_useless_stmts_cond): Warn for deleted conditionals.
        (remove_useless_stmts_cond): Warn for deleted conditionals.
        (remove_useless_stmts_tc): Warn for deleted catches.
        (remove_useless_stmts_tc): Warn for deleted catches.
        (remove_useless_stmts_1): Set has_label.
        (remove_useless_stmts_1): Set has_label.
2003-11-11  Jan Hubicka  
2003-11-11  Jan Hubicka  
        * gimplify.c (gimplify_call_expr):  Unset side effects for
        * gimplify.c (gimplify_call_expr):  Unset side effects for
        pure functions too.
        pure functions too.
        * tree-cfg.c (update-call_expr_flags): New function.
        * tree-cfg.c (update-call_expr_flags): New function.
        (remove_useless_stmts_and_vars_1): Use it.
        (remove_useless_stmts_and_vars_1): Use it.
        (is_ctrl_altering_stmt):  Pure/const calls never alter the CFG.
        (is_ctrl_altering_stmt):  Pure/const calls never alter the CFG.
        * tree-ssa-dce.c (stmt_useful_p): Check side effects flag
        * tree-ssa-dce.c (stmt_useful_p): Check side effects flag
        on call exprs.
        on call exprs.
2003-11-11  Jan Hubicka  
2003-11-11  Jan Hubicka  
        * tree-cfg.c (has_label_p): New function.
        * tree-cfg.c (has_label_p): New function.
        (tree_verify_flow_info): New checks.
        (tree_verify_flow_info): New checks.
        * tree-optimize.c (optimize_function_tree): Call verify_flow_info
        * tree-optimize.c (optimize_function_tree): Call verify_flow_info
        before de-SSA.
        before de-SSA.
2003-11-11  Richard Henderson  
2003-11-11  Richard Henderson  
        * tree-cfg.c (struct rus_data): Rename from rusv_data.
        * tree-cfg.c (struct rus_data): Rename from rusv_data.
        Remove remove_unused_vars.
        Remove remove_unused_vars.
        (remove_useless_stmts*): Rename from remove_useless_stmts_and_vars*.
        (remove_useless_stmts*): Rename from remove_useless_stmts_and_vars*.
        (remove_useless_stmts_bind): Do not remove dead variables.
        (remove_useless_stmts_bind): Do not remove dead variables.
        (remove_useless_stmts): Kill remove_unused_vars argument.
        (remove_useless_stmts): Kill remove_unused_vars argument.
        * tree-flow.h (remove_useless_stmts): Update.
        * tree-flow.h (remove_useless_stmts): Update.
        * tree-optimize.c (tree_rest_of_compilation): Update call.
        * tree-optimize.c (tree_rest_of_compilation): Update call.
        * tree-ssa.c (rewrite_out_of_ssa): Likewise.
        * tree-ssa.c (rewrite_out_of_ssa): Likewise.
2003-11-11  Zdenek Dvorak  
2003-11-11  Zdenek Dvorak  
            Diego Novillo  
            Diego Novillo  
        * basic-block.h (brief_dump_cfg): Declare.
        * basic-block.h (brief_dump_cfg): Declare.
        * cfg.c (dump_cfg_bb_info, brief_dump_cfg): New.
        * cfg.c (dump_cfg_bb_info, brief_dump_cfg): New.
        * diagnostic.h (dump_generic_node): Declaration changed.
        * diagnostic.h (dump_generic_node): Declaration changed.
        (print_generic_stmt_indented): Declare.
        (print_generic_stmt_indented): Declare.
        * gimple-low.c (expand_var_p): New.
        * gimple-low.c (expand_var_p): New.
        (expand_used_vars): Use it.
        (expand_used_vars): Use it.
        * tree-cfg.c (struct cfg_stats_d): Remove num_failed_bind_expr_merges
        * tree-cfg.c (struct cfg_stats_d): Remove num_failed_bind_expr_merges
        field.
        field.
        (remove_bb): Only dump whole block with TDF_DETAILS.
        (remove_bb): Only dump whole block with TDF_DETAILS.
        (tree_dump_bb): Use dump_generic_bb.
        (tree_dump_bb): Use dump_generic_bb.
        (dump_tree_cfg): Use brief_dump_cfg and dump_function_to_file.
        (dump_tree_cfg): Use brief_dump_cfg and dump_function_to_file.
        (dump_cfg_function_to_file): Merged into dump_function_to_file,
        (dump_cfg_function_to_file): Merged into dump_function_to_file,
        removed.
        removed.
        (dump_cfg_stats): Do not dump cfg_stats.num_failed_bind_expr_merges.
        (dump_cfg_stats): Do not dump cfg_stats.num_failed_bind_expr_merges.
        (dump_function_to_file): Moved from tree-dump.c, merged with
        (dump_function_to_file): Moved from tree-dump.c, merged with
        dump_cfg_function_to_file.
        dump_cfg_function_to_file.
        * tree-dump.c (dump_function_to_file): Removed.
        * tree-dump.c (dump_function_to_file): Removed.
        * tree-flow.h (dump_cfg_function_to_file): Declaration removed.
        * tree-flow.h (dump_cfg_function_to_file): Declaration removed.
        (dump_generic_bb, expand_var_p): Declare.
        (dump_generic_bb, expand_var_p): Declare.
        * tree-must-alias.c (tree_compute_must_alias): Replace
        * tree-must-alias.c (tree_compute_must_alias): Replace
        dump_cfg_function_to_file by dump_function_to_file.
        dump_cfg_function_to_file by dump_function_to_file.
        * tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
        * tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
        * tree-ssa-dce.c (tree_ssa_dce): Ditto.
        * tree-ssa-dce.c (tree_ssa_dce): Ditto.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
        * tree-ssa-pre.c (tree_perform_ssapre): Ditto.
        * tree-ssa-pre.c (tree_perform_ssapre): Ditto.
        * tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
        * tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
        * tree-tailcall.c (tree_optimize_tail_calls): Ditto.
        * tree-tailcall.c (tree_optimize_tail_calls): Ditto.
        * tree-pretty-print.c (print_declaration, print_generic_decl): Don't
        * tree-pretty-print.c (print_declaration, print_generic_decl): Don't
        use flags argument, change spacing.
        use flags argument, change spacing.
        (dump_block_info): Removed.
        (dump_block_info): Removed.
        (dump_generic_bb_buff, dump_generic_bb, print_generic_stmt_indented,
        (dump_generic_bb_buff, dump_generic_bb, print_generic_stmt_indented,
        dump_bb_header, dump_bb_end, dump_phi_nodes): New functions.
        dump_bb_header, dump_bb_end, dump_phi_nodes): New functions.
        (dump_vops): Change spacing, don't dump phi nodes.
        (dump_vops): Change spacing, don't dump phi nodes.
        (do_niy, print_generic_stmt, print_generic_expr, print_declaration,
        (do_niy, print_generic_stmt, print_generic_expr, print_declaration,
        print_struct_decl, print_call_name): Add argument to
        print_struct_decl, print_call_name): Add argument to
        the dump_generic_node calls.
        the dump_generic_node calls.
        (last_bb): Removed.
        (last_bb): Removed.
        (dump_generic_node): Print semicolons at end of statements correctly.
        (dump_generic_node): Print semicolons at end of statements correctly.
        Don't print bb related stuff.
        Don't print bb related stuff.
        (maybe_init_pretty_print): Don't initialize last_bb.
        (maybe_init_pretty_print): Don't initialize last_bb.
        * tree-ssa.c (rewrite_out_of_ssa): Do not allow virtual operands to
        * tree-ssa.c (rewrite_out_of_ssa): Do not allow virtual operands to
        be shown in the .optimized dump.
        be shown in the .optimized dump.
2003-11-11  Daniel Berlin  
2003-11-11  Daniel Berlin  
        PR optimization/12936
        PR optimization/12936
        * tree-ssa-pre.c (expr_phi_insertion): Remove unused code that was
        * tree-ssa-pre.c (expr_phi_insertion): Remove unused code that was
        causing ICE's for VA_ARG_EXPR.
        causing ICE's for VA_ARG_EXPR.
2003-11-10  Richard Henderson  
2003-11-10  Richard Henderson  
        * gimple-low.c (lower_function_body): Lower bind_expr in place.
        * gimple-low.c (lower_function_body): Lower bind_expr in place.
        (lower_stmt): Only incr for stmts we're skipping.
        (lower_stmt): Only incr for stmts we're skipping.
        (lower_cond_expr): Detect empty if.
        (lower_cond_expr): Detect empty if.
2003-11-10  Steven Bosscher  
2003-11-10  Steven Bosscher  
        * toplev.c (rest_of_decl_compilation): Use the location of the
        * toplev.c (rest_of_decl_compilation): Use the location of the
        declaration for error messages.
        declaration for error messages.
2003-11-10  Richard Henderson  
2003-11-10  Richard Henderson  
        * gimplify.c (add_stmt_to_compound, add_tree): Remove.
        * gimplify.c (add_stmt_to_compound, add_tree): Remove.
        (append_to_statement_list_1, append_to_statement_list): New.
        (append_to_statement_list_1, append_to_statement_list): New.
        (append_to_statement_list_force): New.
        (append_to_statement_list_force): New.
        (gimplify_loop_expr): Take pre_p.
        (gimplify_loop_expr): Take pre_p.
        (gimplify_expr): Provide it.
        (gimplify_expr): Provide it.
        * tree-simple.h: Update.
        * tree-simple.h: Update.
        * c-simplify.c: Replace add_tree with append_to_statement_list.
        * c-simplify.c: Replace add_tree with append_to_statement_list.
        * gimplify.c, tree-mudflap.c: Likewise.
        * gimplify.c, tree-mudflap.c: Likewise.
2003-11-10  Richard Henderson  
2003-11-10  Richard Henderson  
        * c-common.c (c_warn_unused_result): Restructure to use iterator
        * c-common.c (c_warn_unused_result): Restructure to use iterator
        on COMPOUND_EXPR only.
        on COMPOUND_EXPR only.
2003-11-09  Zdenek Dvorak  
2003-11-09  Zdenek Dvorak  
        * tree-cfg.c (tree_verify_flow_info): Fix checking of order of basic
        * tree-cfg.c (tree_verify_flow_info): Fix checking of order of basic
        blocks over code.
        blocks over code.
2003-11-09  Richard Henderson  
2003-11-09  Richard Henderson  
        * basic-block.h (struct edge_def): Turn insns into a union.
        * basic-block.h (struct edge_def): Turn insns into a union.
        * cfgrtl.c (insert_insn_on_edge): Update to match.
        * cfgrtl.c (insert_insn_on_edge): Update to match.
        (commit_one_edge_insertion, commit_edge_insertions): Likewise.
        (commit_one_edge_insertion, commit_edge_insertions): Likewise.
        (commit_edge_insertions_watch_calls): Likewise.
        (commit_edge_insertions_watch_calls): Likewise.
        * gcse.c (reg_killed_on_edge, bypass_block): Likewise.
        * gcse.c (reg_killed_on_edge, bypass_block): Likewise.
        * profile.c (instrument_edges): Likewise.
        * profile.c (instrument_edges): Likewise.
        * rtlanal.c (hoist_insn_to_edge): Likewise.
        * rtlanal.c (hoist_insn_to_edge): Likewise.
        * tree-cfg.c (PENDING_STMT): Likewise.
        * tree-cfg.c (PENDING_STMT): Likewise.
        (SET_PENDING_STMT): Remove.
        (SET_PENDING_STMT): Remove.
        (bsi_commit_edge_inserts): Update to match.
        (bsi_commit_edge_inserts): Update to match.
2003-11-08  Jan Hubicka  
2003-11-08  Jan Hubicka  
        * fold.c (nondestructive_fold_binary_to_constant): Fix typo.
        * fold.c (nondestructive_fold_binary_to_constant): Fix typo.
        * fold-const.c (fold_relational_const): Check for side effects.
        * fold-const.c (fold_relational_const): Check for side effects.
2003-11-07  Zdenek Dvorak  
2003-11-07  Zdenek Dvorak  
        * basic-block.h (create_bb): Declaration changed.
        * basic-block.h (create_bb): Declaration changed.
        * tree-cfg.c (create_bb): Enable creating a block on specified place.
        * tree-cfg.c (create_bb): Enable creating a block on specified place.
        (make_blocks, tree_split_edge, tree_make_forwarder_block): Use it.
        (make_blocks, tree_split_edge, tree_make_forwarder_block): Use it.
        (tree_verify_flow_info): Check bbs are in the correct order.
        (tree_verify_flow_info): Check bbs are in the correct order.
        * tree-cfg.c (find_unreachable_blocks): Remove now incorrect comments.
        * tree-cfg.c (find_unreachable_blocks): Remove now incorrect comments.
        * tree-ssa.c (rewrite_out_of_ssa): Don't remove annotations from
        * tree-ssa.c (rewrite_out_of_ssa): Don't remove annotations from
        statements before the final dump.
        statements before the final dump.
2003-11-07  Zdenek Dvorak  
2003-11-07  Zdenek Dvorak  
        * tree-tailcall.c (struct tailcall): New.
        * tree-tailcall.c (struct tailcall): New.
        (bb_optimize_tail_calls, find_tail_call_p): Removed.
        (bb_optimize_tail_calls, find_tail_call_p): Removed.
        (eliminate_tail_call): Get the tailcall from the struct tailcall.
        (eliminate_tail_call): Get the tailcall from the struct tailcall.
        (optimize_tail_call, find_tail_calls): New.
        (optimize_tail_call, find_tail_calls): New.
        (tree_optimize_tail_calls): Use them.
        (tree_optimize_tail_calls): Use them.
2003-11-07  Jan Hubicka  
2003-11-07  Jan Hubicka  
        * gimple-low.c (simple_goto_p): Move to...
        * gimple-low.c (simple_goto_p): Move to...
        * tree-cfg.c: (simple_goto_p): ... here;
        * tree-cfg.c: (simple_goto_p): ... here;
        (nonlocal_goto_p): New.
        (nonlocal_goto_p): New.
        (is_computed_goto): Rename to ...
        (is_computed_goto): Rename to ...
        (computed_goto_p): ... this; make global.
        (computed_goto_p): ... this; make global.
        (factor_computed_gotos, make_blocks):  Update calls.
        (factor_computed_gotos, make_blocks):  Update calls.
        (make_ctrl_stmt_edges): Add edge for nonlocal labels; use new functions.
        (make_ctrl_stmt_edges): Add edge for nonlocal labels; use new functions.
        * tree-flow.h (is_coputed_goto): Kill.
        * tree-flow.h (is_coputed_goto): Kill.
        (nonlocal_goto_p, simple_goto_p, computed_goto_p): Declare.
        (nonlocal_goto_p, simple_goto_p, computed_goto_p): Declare.
        * tree-ssa-ccp (visit_stmt): Update.
        * tree-ssa-ccp (visit_stmt): Update.
2003-11-07  Jan Hubicka  
2003-11-07  Jan Hubicka  
        * fold-const.c (tree_expr_nonzero_p): Fix typo.
        * fold-const.c (tree_expr_nonzero_p): Fix typo.
        * fold-const.c (tree_expr_nonzero_p): New function.
        * fold-const.c (tree_expr_nonzero_p): New function.
        (fold_relational_const): Use it.
        (fold_relational_const): Use it.
        (nondestructive_fold_binary_to_constant): Allow casts in address
        (nondestructive_fold_binary_to_constant): Allow casts in address
        expressions.
        expressions.
2003-11-06  Jan Hubicka  
2003-11-06  Jan Hubicka  
        * tree-cfg.c (tree_block_label):  Cleanup.
        * tree-cfg.c (tree_block_label):  Cleanup.
2003-11-06  Daniel Berlin  
2003-11-06  Daniel Berlin  
        * tree-ssa-pre.c (fast_a_dominates_b): New function.
        * tree-ssa-pre.c (fast_a_dominates_b): New function.
        (build_dfs_id_array_1): Ditto.
        (build_dfs_id_array_1): Ditto.
        (build_dfs_id_array): Ditto.
        (build_dfs_id_array): Ditto.
        (load_modified_phi_result): Use fast_a_dominates_b.
        (load_modified_phi_result): Use fast_a_dominates_b.
        (rename_1): Ditto.
        (rename_1): Ditto.
        Also use build_dfs_id_array, and remove some duplicate ephi_at_block
        Also use build_dfs_id_array, and remove some duplicate ephi_at_block
        calls.
        calls.
        (insert_occ_in_preorder_dt_order): Remove some duplicate ephi_at_block
        (insert_occ_in_preorder_dt_order): Remove some duplicate ephi_at_block
        calls.
        calls.
        (pre_expression): Ditto.
        (pre_expression): Ditto.
        Also free dfs_id arrays here.
        Also free dfs_id arrays here.
        (collect_expressions): Remove duplicate bsi_stmt calls.
        (collect_expressions): Remove duplicate bsi_stmt calls.
2003-11-06  Daniel Berlin  
2003-11-06  Daniel Berlin  
        * tree-ssa-pre.c (count_stmts_in_bb): Removed.
        * tree-ssa-pre.c (count_stmts_in_bb): Removed.
        (set_var_phis): Only call bb_for_stmt once.
        (set_var_phis): Only call bb_for_stmt once.
        (insert_one_operand): Remove endtree, endtreep, a lot of special handling
        (insert_one_operand): Remove endtree, endtreep, a lot of special handling
        no longer needed.  Remove insert_done.
        no longer needed.  Remove insert_done.
        (collect_expressions): Enable INDIRECT_REF and SSA_NAME handling.
        (collect_expressions): Enable INDIRECT_REF and SSA_NAME handling.
2003-11-06  Steven Bosscher  
2003-11-06  Steven Bosscher  
        * tree-cfg.c (STRIP_CONTAINERS): Remove.
        * tree-cfg.c (STRIP_CONTAINERS): Remove.
2003-11-06  Jan Hubicka  
2003-11-06  Jan Hubicka  
        * tree-cfg.c (cleanup_cond_expr_graph):  Clean edge flags.
        * tree-cfg.c (cleanup_cond_expr_graph):  Clean edge flags.
2003-11-06  Zdenek Dvorak  
2003-11-06  Zdenek Dvorak  
        * tree-dump.c (dump_options): Remove TDF_LINENO from all setting.
        * tree-dump.c (dump_options): Remove TDF_LINENO from all setting.
2003-11-06  Jan Hubicka  
2003-11-06  Jan Hubicka  
        * builtins.c (expand_builtin_strstr, expand_builtin_strchr,
        * builtins.c (expand_builtin_strstr, expand_builtin_strchr,
        expand_builtin_strrchr, expand_builtin_strpbrk,
        expand_builtin_strrchr, expand_builtin_strpbrk,
        simplify_builtin_strstr, simplify_builtin_strrchr,
        simplify_builtin_strstr, simplify_builtin_strrchr,
        simplify_builtin_strpbrk): Add missing casts.
        simplify_builtin_strpbrk): Add missing casts.
2003-11-05  Zdenek Dvorak  
2003-11-05  Zdenek Dvorak  
        * diagnostic.h (print_generic_decl): Declare.
        * diagnostic.h (print_generic_decl): Declare.
        * tree-cfg.c (dump_cfg_function_to_file): Dump variables in
        * tree-cfg.c (dump_cfg_function_to_file): Dump variables in
        unexpanded_var_list.
        unexpanded_var_list.
        * tree-pretty-print.c (print_generic_decl): New function.
        * tree-pretty-print.c (print_generic_decl): New function.
2003-11-05  Zdenek Dvorak  
2003-11-05  Zdenek Dvorak  
        * Makefile.in (gimplify.o): Add function.h dependency.
        * Makefile.in (gimplify.o): Add function.h dependency.
        * c-call-graph.c (construct_call_graph): Modify build_tree_cfg call.
        * c-call-graph.c (construct_call_graph): Modify build_tree_cfg call.
        * gimple-low.c (record_vars): Export.
        * gimple-low.c (record_vars): Export.
        (lower_function_body): Remove the topmost BIND_EXPR.
        (lower_function_body): Remove the topmost BIND_EXPR.
        * gimplify.c: Include function.h.
        * gimplify.c: Include function.h.
        (gimple_add_tmp_var): Record temporaries in the
        (gimple_add_tmp_var): Record temporaries in the
        cfun->unexpanded_vars_list if available.
        cfun->unexpanded_vars_list if available.
        * tree-cfg.c (build_tree_cfg): Work without the topmost BIND_EXPR.
        * tree-cfg.c (build_tree_cfg): Work without the topmost BIND_EXPR.
        (dump_cfg_function_to_file): New.
        (dump_cfg_function_to_file): New.
        (dump_tree_cfg): Use dump_cfg_function_to_file.
        (dump_tree_cfg): Use dump_cfg_function_to_file.
        * tree-dump.c (dump_function_to_file): Work without the topmost
        * tree-dump.c (dump_function_to_file): Work without the topmost
        BIND_EXPR.
        BIND_EXPR.
        * tree-flow.h (build_tree_cfg): Declaration changed.
        * tree-flow.h (build_tree_cfg): Declaration changed.
        (dump_cfg_function_to_file, record_vars): Declare.
        (dump_cfg_function_to_file, record_vars): Declare.
        * tree-optimize.c (optimize_function_tree, tree_rest_of_compilation):
        * tree-optimize.c (optimize_function_tree, tree_rest_of_compilation):
        Work without the topmost BIND_EXPR.
        Work without the topmost BIND_EXPR.
        * tree-must-alias.c (tree_compute_must_alias): Use
        * tree-must-alias.c (tree_compute_must_alias): Use
        dump_cfg_function_to_file.
        dump_cfg_function_to_file.
        * tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
        * tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
        * tree-ssa-dce.c (tree_ssa_dce): Ditto.
        * tree-ssa-dce.c (tree_ssa_dce): Ditto.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
        * tree-ssa-pre.c (tree_perform_ssapre): Ditto.
        * tree-ssa-pre.c (tree_perform_ssapre): Ditto.
        * tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
        * tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
        * tree-tailcall.c (tree_optimize_tail_calls): Ditto.
        * tree-tailcall.c (tree_optimize_tail_calls): Ditto.
        * tree.h (optimize_function_tree): Declaration changed.
        * tree.h (optimize_function_tree): Declaration changed.
2003-11-03  Daniel Berlin  
2003-11-03  Daniel Berlin  
        * tree-ssa-pre.c (handle_bb_creation): Removed.
        * tree-ssa-pre.c (handle_bb_creation): Removed.
        (redo_dominators): Removed.
        (redo_dominators): Removed.
        (insert_one_operand): Remove code to handle bb creation, since all
        (insert_one_operand): Remove code to handle bb creation, since all
        critical edges are now pre-split.
        critical edges are now pre-split.
        (finalize_2): Remove redo_dominators related code.
        (finalize_2): Remove redo_dominators related code.
        (pre_expression): Return 1 if we exited early because nothing happened.
        (pre_expression): Return 1 if we exited early because nothing happened.
        (split_critical_edges): Do fake variable assignments instead, because
        (split_critical_edges): Do fake variable assignments instead, because
        it works. return true if we actually split an edge.
        it works. return true if we actually split an edge.
        (tree_perform_ssapre): Remove redo_dominators code.
        (tree_perform_ssapre): Remove redo_dominators code.
2003-11-03  Zdenek Dvorak  
2003-11-03  Zdenek Dvorak  
        * function.h (struct function): New field unexpanded_var_list.
        * function.h (struct function): New field unexpanded_var_list.
        * gimple-low.c (unexpanded_var_list): Removed.
        * gimple-low.c (unexpanded_var_list): Removed.
        (record_vars, expand_used_vars): Use cfun->unexpanded_var_list.
        (record_vars, expand_used_vars): Use cfun->unexpanded_var_list.
        * tree-flow.h (unexpanded_var_list): Declaration removed.
        * tree-flow.h (unexpanded_var_list): Declaration removed.
        * gimplify.c (should_carry_locus_p): New.
        * gimplify.c (should_carry_locus_p): New.
        (annotate_all_with_locus_1): Use it.  Do not annotate empty
        (annotate_all_with_locus_1): Use it.  Do not annotate empty
        statements.
        statements.
2003-11-03  Jan Hubicka  
2003-11-03  Jan Hubicka  
        * tree-cfg.c (tree_try_redirect_by_replacing_jump): Do not use
        * tree-cfg.c (tree_try_redirect_by_replacing_jump): Do not use
        succesor_block.
        succesor_block.
2003-11-03  Zdenek Dvorak  
2003-11-03  Zdenek Dvorak  
        * tree-pretty-print.c (dump_block_info): Add flags parameter.
        * tree-pretty-print.c (dump_block_info): Add flags parameter.
        Only show line number when asked to.
        Only show line number when asked to.
        (dump_generic_node): Pass flags to dump_block_info.
        (dump_generic_node): Pass flags to dump_block_info.
2003-11-03  Jan Hubicka  
2003-11-03  Jan Hubicka  
        * cfghooks.h (redirect_edge_and_branch hook): Make it return edge.
        * cfghooks.h (redirect_edge_and_branch hook): Make it return edge.
        * cfgrtl.c (cfg_layout_redirect_edge_and_branch,
        * cfgrtl.c (cfg_layout_redirect_edge_and_branch,
        rtl_redirect_edge_and_branch, try_redirect_by_replacing_jump):
        rtl_redirect_edge_and_branch, try_redirect_by_replacing_jump):
        Update to new interface.
        Update to new interface.
        * tree-cfg.c (tree_cfg_hooks): Move to end of file; set
        * tree-cfg.c (tree_cfg_hooks): Move to end of file; set
        redirect_edge_and_branch and redirect_edge_and_branch_force.
        redirect_edge_and_branch and redirect_edge_and_branch_force.
        (thread_jumps): Use redirect_edge_and_branch.
        (thread_jumps): Use redirect_edge_and_branch.
        (tree_block_label): new; break out of thread_edge.
        (tree_block_label): new; break out of thread_edge.
        (tree_try_redirect_by_replacing_jump): New.
        (tree_try_redirect_by_replacing_jump): New.
        (thread_edge): Rename to tree_redirect_edge_and_branch; deal sanely
        (thread_edge): Rename to tree_redirect_edge_and_branch; deal sanely
        with unusual edges; preserve profile.
        with unusual edges; preserve profile.
        (tree_redirect_edge_and_branch_force): New.
        (tree_redirect_edge_and_branch_force): New.
        * tree-flow.h (ssa_redirect_edge): Declare.
        * tree-flow.h (ssa_redirect_edge): Declare.
        * tree-ssa.dom.c (tree_ssa_dominator_optimize): Use redirect_edge_and_branch.
        * tree-ssa.dom.c (tree_ssa_dominator_optimize): Use redirect_edge_and_branch.
        * tree-ssa.c (ssa_redirect_edge): New.
        * tree-ssa.c (ssa_redirect_edge): New.
2003-11-03  Jeff Law  
2003-11-03  Jeff Law  
        * domwalk.h (struct dom_walk_data): New field "global_data".
        * domwalk.h (struct dom_walk_data): New field "global_data".
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Initialize new
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Initialize new
        "global_data" field.
        "global_data" field.
        * tree-flow.h (enum need_phi_state): New enumeration.
        * tree-flow.h (enum need_phi_state): New enumeration.
        (var_ann_d): Add bitfield for need_phi_state.
        (var_ann_d): Add bitfield for need_phi_state.
        * tree-ssa.c (mark_def_sites_global_data): New structure to hold
        * tree-ssa.c (mark_def_sites_global_data): New structure to hold
        global data for mark_def_sites dominator walk.
        global data for mark_def_sites dominator walk.
        (mark_def_sites): Revamp to be called via the dominator walker.
        (mark_def_sites): Revamp to be called via the dominator walker.
        (set_def_block): Update need_phi_state for the variable as needed.
        (set_def_block): Update need_phi_state for the variable as needed.
        (set_livein_block): Similarly.
        (set_livein_block): Similarly.
        (rewrite_into_ssa): Use dominator walker to call mark_def_sites.
        (rewrite_into_ssa): Use dominator walker to call mark_def_sites.
        Delay freeing dominance info.  Kill "globals" bitmap.
        Delay freeing dominance info.  Kill "globals" bitmap.
        (insert_phi_nodes): No longer need "globals" bitmap.  Use
        (insert_phi_nodes): No longer need "globals" bitmap.  Use
        need_phi_state in variable's annotation to determine if a PHI
        need_phi_state in variable's annotation to determine if a PHI
        may be needed.
        may be needed.
        * tree-ssa-dom.c (dom_opt_finalize_block): Try to thread across the
        * tree-ssa-dom.c (dom_opt_finalize_block): Try to thread across the
        edges leaving COND_EXPR nodes which are leafs in the dominator
        edges leaving COND_EXPR nodes which are leafs in the dominator
        tree.
        tree.
        (record_equivalences_from_incoming_edge): Do not set EQ_EXPR_VALUE
        (record_equivalences_from_incoming_edge): Do not set EQ_EXPR_VALUE
        unless the block's single predecessor contains parent_block_last_stmt.
        unless the block's single predecessor contains parent_block_last_stmt.
2003-11-03  Zdenek Dvorak  
2003-11-03  Zdenek Dvorak  
        * tree-dump.c (dump_options): Add TDF_LINENO.
        * tree-dump.c (dump_options): Add TDF_LINENO.
        * tree-pretty-print.c (dump_generic_node): Print line number for
        * tree-pretty-print.c (dump_generic_node): Print line number for
        statements if asked to.
        statements if asked to.
        * tree.h (TDF_LINENO): New.
        * tree.h (TDF_LINENO): New.
        * doc/invoke.texi (lineno): Document.
        * doc/invoke.texi (lineno): Document.
2003-11-03  Zdenek Dvorak  
2003-11-03  Zdenek Dvorak  
        * expr.c (expand_vars, expand_var): Split of ...
        * expr.c (expand_vars, expand_var): Split of ...
        (expand_expr_1): ... here.
        (expand_expr_1): ... here.
        * expr.h (expand_var): Declare.
        * expr.h (expand_var): Declare.
        * gimple-low.c (lower_function_body, lower_stmt, lower_bind_expr):
        * gimple-low.c (lower_function_body, lower_stmt, lower_bind_expr):
        Eliminate BIND_EXPRs.
        Eliminate BIND_EXPRs.
        (expand_used_vars): New.
        (expand_used_vars): New.
        * tree-alias-common.c (create_alias_vars): Walk variables in blocks.
        * tree-alias-common.c (create_alias_vars): Walk variables in blocks.
        * tree-cfg.c (make_bind_expr_blocks): Removed.
        * tree-cfg.c (make_bind_expr_blocks): Removed.
        (make_blocks, build_tree_cfg, factor_computed_gotos): Don't handle
        (make_blocks, build_tree_cfg, factor_computed_gotos): Don't handle
        BIND_EXPRs.
        BIND_EXPRs.
        (assign_vars_to_scope, successor_block, NEXT_BLOCK_LINK): Removed.
        (assign_vars_to_scope, successor_block, NEXT_BLOCK_LINK): Removed.
        (make_edges, make_exit_edges): Don't use successor_block.
        (make_edges, make_exit_edges): Don't use successor_block.
        (remove_useless_stmts_and_vars_goto): Don't expect NEXT_BLOCK_LINK
        (remove_useless_stmts_and_vars_goto): Don't expect NEXT_BLOCK_LINK
        to be set.
        to be set.
        (bsi_init, bsi_next_in_bb, bsi_from_tsi): Don't handle BIND_EXPRs.
        (bsi_init, bsi_next_in_bb, bsi_from_tsi): Don't handle BIND_EXPRs.
        (replace_stmt): Don't create BIND_EXPRs.
        (replace_stmt): Don't create BIND_EXPRs.
        * tree-flow.h (struct var_ann_d): Removed field scope.
        * tree-flow.h (struct var_ann_d): Removed field scope.
        (struct stmt_ann_d): Removed fields scope and scope_level.
        (struct stmt_ann_d): Removed fields scope and scope_level.
        (propagate_copy): Declaration changed.
        (propagate_copy): Declaration changed.
        (fixup_var_scope): Removed.
        (fixup_var_scope): Removed.
        * tree-must-alias.c (tree_compute_must_alias): Consider DECL_NONLOCAL
        * tree-must-alias.c (tree_compute_must_alias): Consider DECL_NONLOCAL
        vars call clobbered.
        vars call clobbered.
        * tree-optimize.c (tree_rest_of_compilation): Call expand_used_vars.
        * tree-optimize.c (tree_rest_of_compilation): Call expand_used_vars.
        * tree-ssa-copyprop.c (move_var_to_scope, fixup_var_scope): Removed.
        * tree-ssa-copyprop.c (move_var_to_scope, fixup_var_scope): Removed.
        (copyprop_stmt): Call to propagate_copy changed.
        (copyprop_stmt): Call to propagate_copy changed.
        (propagate_copy): Don't update scope.
        (propagate_copy): Don't update scope.
        * tree-ssa-dom.c (cprop_into_stmt): Call to propagate_copy changed.
        * tree-ssa-dom.c (cprop_into_stmt): Call to propagate_copy changed.
        (eliminate_redundant_computations): Don't call fixup_var_scope.
        (eliminate_redundant_computations): Don't call fixup_var_scope.
        * tree-ssa.c (insert_copy_on_edge): Don't update scope.
        * tree-ssa.c (insert_copy_on_edge): Don't update scope.
2003-11-02  Zdenek Dvorak  
2003-11-02  Zdenek Dvorak  
        * tree-inline.c (walk_tree): Tail recursion optimized for
        * tree-inline.c (walk_tree): Tail recursion optimized for
        COMPOUND_EXPRs.
        COMPOUND_EXPRs.
        * tree-eh.c (collect_finally_tree): Ditto.
        * tree-eh.c (collect_finally_tree): Ditto.
2003-11-02  Zdenek Dvorak  
2003-11-02  Zdenek Dvorak  
        * tree-optimize.c (optimize_function_tree): Removed duplicate call of
        * tree-optimize.c (optimize_function_tree): Removed duplicate call of
        lower_function_body.  Moved call of reset_block_changes ...
        lower_function_body.  Moved call of reset_block_changes ...
        (tree_rest_of_compilation) ... here.  Reset the scope to top before
        (tree_rest_of_compilation) ... here.  Reset the scope to top before
        expanding function end.
        expanding function end.
2003-11-01  Zdenek Dvorak  
2003-11-01  Zdenek Dvorak  
        * basic-block.h (BB_CONTROL_STRUCTURE): Removed.
        * basic-block.h (BB_CONTROL_STRUCTURE): Removed.
        * tree-cfg.c (struct cfg_stats_d): Field num_merged_cases removed.
        * tree-cfg.c (struct cfg_stats_d): Field num_merged_cases removed.
        (make_blocks, make_bind_expr_blocks, append_stmt_to_bb, bsi_link_after,
        (make_blocks, make_bind_expr_blocks, append_stmt_to_bb, bsi_link_after,
        build_tree_cfg, factor_computed_gotos, prepend_stmt_to_bb,
        build_tree_cfg, factor_computed_gotos, prepend_stmt_to_bb,
        remove_stmt, replace_stmt): Don't set parent.
        remove_stmt, replace_stmt): Don't set parent.
        (set_parent_stmt, add_stmt_to_bb, find_contained_blocks,
        (set_parent_stmt, add_stmt_to_bb, find_contained_blocks,
        blocks_unreachable_p, remove_blocks, remove_unreachable_block,
        blocks_unreachable_p, remove_blocks, remove_unreachable_block,
        move_outgoing_edges, merge_tree_blocks, remap_stmts): Removed.
        move_outgoing_edges, merge_tree_blocks, remap_stmts): Removed.
        (REMOVE_ALL_STMTS, REMOVE_NO_STMTS, REMOVE_NON_CONTROL_STRUCTS,
        (REMOVE_ALL_STMTS, REMOVE_NO_STMTS, REMOVE_NON_CONTROL_STRUCTS,
        REMOVE_CONTROL_STRUCTS): Removed.
        REMOVE_CONTROL_STRUCTS): Removed.
        (remove_bb): Code to handle control structures removed.
        (remove_bb): Code to handle control structures removed.
        (tree_block_forwards_to): Don't stop due to CASE_LABEL_EXPRs.
        (tree_block_forwards_to): Don't stop due to CASE_LABEL_EXPRs.
        (tree_dump_bb): Don't print parent.  Print only BIND_EXPRs in slim
        (tree_dump_bb): Don't print parent.  Print only BIND_EXPRs in slim
        form.
        form.
        (dump_tree_cfg): Don't count merged case labels.
        (dump_tree_cfg): Don't count merged case labels.
        (is_ctrl_structure): Removed.
        (is_ctrl_structure): Removed.
        (stmt_starts_bb_p): Don't handle CASE_LABEL_EXPRs.
        (stmt_starts_bb_p): Don't handle CASE_LABEL_EXPRs.
        (tree_verify_flow_info): Don't check BB_CONTROL_STRUCTURE.
        (tree_verify_flow_info): Don't check BB_CONTROL_STRUCTURE.
        * tree-flow-inline.h (parent_block, parent_stmt): Removed.
        * tree-flow-inline.h (parent_block, parent_stmt): Removed.
        * tree-flow.h (struct stmt_ann_d): Remove parent_stmt field.
        * tree-flow.h (struct stmt_ann_d): Remove parent_stmt field.
        (parent_stmt, parent_block, is_ctrl_structure): Declarations removed.
        (parent_stmt, parent_block, is_ctrl_structure): Declarations removed.
        * tree-pretty-print.c (dump_generic_node): Don't handle lowered
        * tree-pretty-print.c (dump_generic_node): Don't handle lowered
        COND_EXPRs specially.
        COND_EXPRs specially.
        * tree-ssa-ccp.c (visit_stmt): Don't check is_ctrl_structure.
        * tree-ssa-ccp.c (visit_stmt): Don't check is_ctrl_structure.
2003-10-31  Jeff Law  
2003-10-31  Jeff Law  
        * tree-ssa-dom.c (record_equivalences_from_stmt): Restore lost code
        * tree-ssa-dom.c (record_equivalences_from_stmt): Restore lost code
        to create equivalences from BIT_IOR_EXPR.
        to create equivalences from BIT_IOR_EXPR.
        * tree-ssa-dom.c (thread_jumps_walk_stmts): Go ahead and optimize
        * tree-ssa-dom.c (thread_jumps_walk_stmts): Go ahead and optimize
        a COND_EXPR with a compile-time constant condition.
        a COND_EXPR with a compile-time constant condition.
2003-10-31  Diego Novillo  
2003-10-31  Diego Novillo  
        * tree-optimize.c (optimize_function_tree): Fix comment
        * tree-optimize.c (optimize_function_tree): Fix comment
        describing SSA pass after DOM2.
        describing SSA pass after DOM2.
2003-10-31  Diego Novillo  
2003-10-31  Diego Novillo  
        Fix PR optimization/12825
        Fix PR optimization/12825
        * tree-optimize.c (optimize_function_tree): Run SSA renamer after
        * tree-optimize.c (optimize_function_tree): Run SSA renamer after
        second DOM pass.
        second DOM pass.
2003-10-30  Richard Henderson  
2003-10-30  Richard Henderson  
        * c-common.c (match_case_to_enum_1, match_case_to_enum): New.
        * c-common.c (match_case_to_enum_1, match_case_to_enum): New.
        (c_do_switch_warnings): New.
        (c_do_switch_warnings): New.
        * c-common.h (c_do_switch_warnings): Declare.
        * c-common.h (c_do_switch_warnings): Declare.
        * c-typeck.c (c_finish_case): Call it.
        * c-typeck.c (c_finish_case): Call it.
        * stmt.c (all_cases_count, BITARRAY_TEST, BITARRAY_SET,
        * stmt.c (all_cases_count, BITARRAY_TEST, BITARRAY_SET,
        mark_seen_cases, check_for_full_enumeration_handling): Remove.
        mark_seen_cases, check_for_full_enumeration_handling): Remove.
        (expand_end_case_type): Don't do warn_switch handling.
        (expand_end_case_type): Don't do warn_switch handling.
        * expr.h, tree.h: Remove dead decls.
        * expr.h, tree.h: Remove dead decls.
        * c-simplify.c (gimplify_switch_stmt): Force switch body non-null.
        * c-simplify.c (gimplify_switch_stmt): Force switch body non-null.
2003-10-30  Richard Henderson  
2003-10-30  Richard Henderson  
        * tree-cfg.c (thread_jumps): Allow SWITCH_EXPR.
        * tree-cfg.c (thread_jumps): Allow SWITCH_EXPR.
        (thread_edge): Handle it.  Tidy surrounding code.
        (thread_edge): Handle it.  Tidy surrounding code.
2003-10-30  Richard Henderson  
2003-10-30  Richard Henderson  
        * domwalk.c (walk_dominator_tree): Pass any final is_ctrl_stmt
        * domwalk.c (walk_dominator_tree): Pass any final is_ctrl_stmt
        down the recursive walk.
        down the recursive walk.
2003-10-30  Jeff Law  
2003-10-30  Jeff Law  
        * tree-ssa-dom.c (thread_across_edge): Renamed from
        * tree-ssa-dom.c (thread_across_edge): Renamed from
        thread_through_successor.  Revamp to thread the destination of an edge
        thread_through_successor.  Revamp to thread the destination of an edge
        rather than the successors of a block.
        rather than the successors of a block.
        (dom_opt_finalize_block): Corresponding changes.  Do not bother calling
        (dom_opt_finalize_block): Corresponding changes.  Do not bother calling
        thread_across_edge unless we are at a leaf in the dominator tree.
        thread_across_edge unless we are at a leaf in the dominator tree.
        * tree-cfg.c (thread_jumps): Now returns a bool.  Move some tests into
        * tree-cfg.c (thread_jumps): Now returns a bool.  Move some tests into
        tree_forwarder_block_p.  Improve comments.
        tree_forwarder_block_p.  Improve comments.
        (cleanup_control_flow): Now returns a bool indicating if anything was
        (cleanup_control_flow): Now returns a bool indicating if anything was
        changed.
        changed.
        (thread_unconditional_jumps): Kill.
        (thread_unconditional_jumps): Kill.
        (cleanup_tree_cfg): Repeat cascading cleanups until nothing changes.
        (cleanup_tree_cfg): Repeat cascading cleanups until nothing changes.
        (tree_forwarder_block_p): Check forwardable bit in the block's
        (tree_forwarder_block_p): Check forwardable bit in the block's
        annotation to avoid useless work.  Mark blocks as not forwardable as
        annotation to avoid useless work.  Mark blocks as not forwardable as
        appropriate.  Verify destination is not the exit block here.  Do not
        appropriate.  Verify destination is not the exit block here.  Do not
        consider successors of the entry block as forwarders.  Ignore empty
        consider successors of the entry block as forwarders.  Ignore empty
        statements when walking through the block's statements.  Verify target
        statements when walking through the block's statements.  Verify target
        block is not the start of a case label and that we can safely insert
        block is not the start of a case label and that we can safely insert
        a label at the target block.
        a label at the target block.
2003-10-29  Richard Henderson  
2003-10-29  Richard Henderson  
        * c-common.c (c_warn_unused_result): Remove lowered containers.
        * c-common.c (c_warn_unused_result): Remove lowered containers.
        * c-semantics.c (genrtl_case_label): Update add_case_node call.
        * c-semantics.c (genrtl_case_label): Update add_case_node call.
        * c-simplify.c (gimplify_switch_stmt): Build SWITCH_EXPR and
        * c-simplify.c (gimplify_switch_stmt): Build SWITCH_EXPR and
        gimplify it simultaneously with the body.
        gimplify it simultaneously with the body.
        * expr.c (expand_expr_1): Handle SWITCH_BODY clear and
        * expr.c (expand_expr_1): Handle SWITCH_BODY clear and
        SWITCH_LABELS set.  Update add_case_node calls.
        SWITCH_LABELS set.  Update add_case_node calls.
        * gimple-low.c (lower_stmt): Don't do anything for SWITCH_EXPR.
        * gimple-low.c (lower_stmt): Don't do anything for SWITCH_EXPR.
        (lower_switch_expr, lower_case_label_expr): Remove.
        (lower_switch_expr, lower_case_label_expr): Remove.
        * gimplify.c (gimplify_switch_expr): Zap SWITCH_BODY after
        * gimplify.c (gimplify_switch_expr): Zap SWITCH_BODY after
        gimplification.  Force default entry for SWITCH_LABELS.
        gimplification.  Force default entry for SWITCH_LABELS.
        (gimplify_case_label_expr): Rename from gimple_add_case_label.
        (gimplify_case_label_expr): Rename from gimple_add_case_label.
        Assert switch in scope; lower to LABEL_EXPR.
        Assert switch in scope; lower to LABEL_EXPR.
        * stmt.c (pushcase, pushcase_range) Update add_case_node calls.
        * stmt.c (pushcase, pushcase_range) Update add_case_node calls.
        (add_case_node): Add dont_expand_label argument.
        (add_case_node): Add dont_expand_label argument.
        (same_case_target_p): Don't search rtl.
        (same_case_target_p): Don't search rtl.
        * tree-cfg.c (enum find_location_action): Remove.
        * tree-cfg.c (enum find_location_action): Remove.
        (make_switch_expr_blocks): Remove.
        (make_switch_expr_blocks): Remove.
        (make_blocks): Update.
        (make_blocks): Update.
        (make_case_label_edges): Remove.
        (make_case_label_edges): Remove.
        (make_edges): Update.
        (make_edges): Update.
        (find_contained_blocks): Remove lowered containers.
        (find_contained_blocks): Remove lowered containers.
        (make_switch_expr_edges): New.
        (make_switch_expr_edges): New.
        (make_ctrl_stmt_edges): Call it.
        (make_ctrl_stmt_edges): Call it.
        (make_cond_expr_edges): Use label_to_block.
        (make_cond_expr_edges): Use label_to_block.
        (remove_useless_stmts_and_vars_1): Don't go into SWITCH_BODY.
        (remove_useless_stmts_and_vars_1): Don't go into SWITCH_BODY.
        (remove_unreachable_block): Remove SWITCH_EXPR special case.
        (remove_unreachable_block): Remove SWITCH_EXPR special case.
        (cleanup_cond_expr_graph): Tidy.
        (cleanup_cond_expr_graph): Tidy.
        (cleanup_switch_expr_graph): Rewrite.
        (cleanup_switch_expr_graph): Rewrite.
        (disconnect_unreachable_case_labels): Remove.
        (disconnect_unreachable_case_labels): Remove.
        (find_taken_edge_cond_expr): Use integer_zerop/integer_nonzerop.
        (find_taken_edge_cond_expr): Use integer_zerop/integer_nonzerop.
        (find_taken_edge_switch_expr): Rewrite.
        (find_taken_edge_switch_expr): Rewrite.
        (value_matches_some_label): Remove.
        (value_matches_some_label): Remove.
        (find_case_label_for_value): New.
        (find_case_label_for_value): New.
        (is_ctrl_structure): Remove lowered containers.
        (is_ctrl_structure): Remove lowered containers.
        (is_ctrl_stmt): Add SWITCH_EXPR.
        (is_ctrl_stmt): Add SWITCH_EXPR.
        (switch_parent): Remove.
        (switch_parent): Remove.
        (handle_switch_fallthru): Remove.
        (handle_switch_fallthru): Remove.
        (handle_switch_split): Remove.
        (handle_switch_split): Remove.
        (find_insert_location): Merge into ...
        (find_insert_location): Merge into ...
        (bsi_insert_on_edge_immediate): ... here.  Simplify.
        (bsi_insert_on_edge_immediate): ... here.  Simplify.
        (tree_split_edge): Don't set EDGE_FALLTHRU.
        (tree_split_edge): Don't set EDGE_FALLTHRU.
        * tree-eh.c (collect_finally_tree): Remove lowered containers.
        * tree-eh.c (collect_finally_tree): Remove lowered containers.
        (replace_goto_queue_1, block_may_fallthru_last): Likewise.
        (replace_goto_queue_1, block_may_fallthru_last): Likewise.
        (lower_eh_constructs_1): Likewise.
        (lower_eh_constructs_1): Likewise.
        (verify_norecord_switch_expr): New.
        (verify_norecord_switch_expr): New.
        (lower_try_finally_switch): Generate lowered switches.
        (lower_try_finally_switch): Generate lowered switches.
        * tree-inline.c (expand_calls_inline): Don't search null SWITCH_BODY.
        * tree-inline.c (expand_calls_inline): Don't search null SWITCH_BODY.
        * tree-pretty-print.c (dump_generic_node): Do something sensible
        * tree-pretty-print.c (dump_generic_node): Do something sensible
        with lowered switch_expr.
        with lowered switch_expr.
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Update
        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Update
        for lowered switch_expr.
        for lowered switch_expr.
        * tree.def (SWITCH_EXPR): Update docs.
        * tree.def (SWITCH_EXPR): Update docs.
        * tree.h (add_case_node): Update decl.
        * tree.h (add_case_node): Update decl.
2003-10-29  Daniel Berlin 
2003-10-29  Daniel Berlin 
        * tree-ssa-pre.c (n_phi_preds): New variable.
        * tree-ssa-pre.c (n_phi_preds): New variable.
        (generate_vops_as_of_bb): New function
        (generate_vops_as_of_bb): New function
        (generate_expr_as_of_bb): Remove unused first argument. Update all
        (generate_expr_as_of_bb): Remove unused first argument. Update all
        callers.
        callers.
        (subst_phis): Add boundary check for the phi_pred_cache array.
        (subst_phis): Add boundary check for the phi_pred_cache array.
        (same_e_version_phi_result): Once modified, no point in continuing
        (same_e_version_phi_result): Once modified, no point in continuing
        the loop.
        the loop.
        (finalize_2): ESSA Minimization can crash if we ended up with new
        (finalize_2): ESSA Minimization can crash if we ended up with new
        BB's
        BB's
2003-10-29  Richard Henderson  
2003-10-29  Richard Henderson  
        * tree-eh.c (do_return_redirection): Don't move copy to RESULT_DECL
        * tree-eh.c (do_return_redirection): Don't move copy to RESULT_DECL
        outside the RETURN_EXPR.  Introduce a new temporary as needed.
        outside the RETURN_EXPR.  Introduce a new temporary as needed.
2003-10-26  Richard Henderson  
2003-10-26  Richard Henderson  
        * gimplify.c (keep_function_tree_in_gimple_form): Remove.
        * gimplify.c (keep_function_tree_in_gimple_form): Remove.
        (gimplify_function_tree): Return void.  Remove hack for
        (gimplify_function_tree): Return void.  Remove hack for
        language not supporting gimple.
        language not supporting gimple.
        * tree.h: Update decls.
        * tree.h: Update decls.
        * langhooks-def.h (LANG_HOOKS_GIMPLE_BEFORE_INLINING): New.
        * langhooks-def.h (LANG_HOOKS_GIMPLE_BEFORE_INLINING): New.
        * langhooks.h (struct lang_hooks): Add gimple_before_inlining.
        * langhooks.h (struct lang_hooks): Add gimple_before_inlining.
        * tree-inline.c (copy_body_r): Check that instead of
        * tree-inline.c (copy_body_r): Check that instead of
        keep_function_tree_in_gimple_form.
        keep_function_tree_in_gimple_form.
        (initialize_inlined_parameters): Likewise.
        (initialize_inlined_parameters): Likewise.
        (expand_call_inline, expand_calls_inline): Likewise.
        (expand_call_inline, expand_calls_inline): Likewise.
        * explow.c (probe_stack_range): Never emit loop notes.
        * explow.c (probe_stack_range): Never emit loop notes.
        * expr.c (emit_block_move_via_loop): Likewise.
        * expr.c (emit_block_move_via_loop): Likewise.
        * toplev.c (rest_of_compilation): Always synthesize loop notes.
        * toplev.c (rest_of_compilation): Always synthesize loop notes.
2003-10-26  Zdenek Dvorak  
2003-10-26  Zdenek Dvorak  
        * Makefile.in (gimple-low.o): Add function.h dependency.
        * Makefile.in (gimple-low.o): Add function.h dependency.
        * gimple-low.c (struct lower_data): New field block.
        * gimple-low.c (struct lower_data): New field block.
        (lower_function_body, lower_stmt, lower_bind_expr): Record
        (lower_function_body, lower_stmt, lower_bind_expr): Record
        the block at statements.
        the block at statements.
        * cfglayout.c (insn_locators_initialize): Use new info about
        * cfglayout.c (insn_locators_initialize): Use new info about
        blocks.
        blocks.
        * expr.c (expand_expr): Record block changes.
        * expr.c (expand_expr): Record block changes.
        * function.c (blocks_nreverse): Export.
        * function.c (blocks_nreverse): Export.
        (uninitialized_vars_warning): Use DECL_RTL_SET_P to test for presence
        (uninitialized_vars_warning): Use DECL_RTL_SET_P to test for presence
        of rtl.
        of rtl.
        (reset_block_changes, record_block_change, finalize_block_changes,
        (reset_block_changes, record_block_change, finalize_block_changes,
        check_block_change, free_block_changes): New functions.
        check_block_change, free_block_changes): New functions.
        * function.h (struct function): New bitfield dont_emit_block_notes.
        * function.h (struct function): New bitfield dont_emit_block_notes.
        New field ib_boundaries_block.
        New field ib_boundaries_block.
        (blocks_nreverse, reset_block_changes, record_block_change,
        (blocks_nreverse, reset_block_changes, record_block_change,
        finalize_block_changes, check_block_change, free_block_changes):
        finalize_block_changes, check_block_change, free_block_changes):
        Declare.
        Declare.
        * sibcall.c (optimize_sibling_and_tail_recursive_call): Don't call
        * sibcall.c (optimize_sibling_and_tail_recursive_call): Don't call
        reorder_blocks when dont_emit_block_notes.
        reorder_blocks when dont_emit_block_notes.
        * stmt.c (expand_start_bindings_and_block, expand_end_bindings):
        * stmt.c (expand_start_bindings_and_block, expand_end_bindings):
        Don't emit block notes when dont_emit_block_notes.
        Don't emit block notes when dont_emit_block_notes.
        * toplev.c (rest_of_compilation): Don't call reorder_blocks when
        * toplev.c (rest_of_compilation): Don't call reorder_blocks when
        dont_emit_block_notes.
        dont_emit_block_notes.
        * tree.c (build1): Initialize TREE_BLOCK field.
        * tree.c (build1): Initialize TREE_BLOCK field.
        * tree-flow.h (lower_function_body): Declare.
        * tree-flow.h (lower_function_body): Declare.
        * tree-optimize.c: Include function.h.
        * tree-optimize.c: Include function.h.
        (optimize_function_tree): Call lower_function_body.
        (optimize_function_tree): Call lower_function_body.
        * tree.h (struct tree_exp): Add block field.
        * tree.h (struct tree_exp): Add block field.
        (TREE_BLOCK): New macro.
        (TREE_BLOCK): New macro.
2003-10-26  Richard Henderson  
2003-10-26  Richard Henderson  
        * tree.h (tree_dump_index): Add TDI_lower.
        * tree.h (tree_dump_index): Add TDI_lower.
        * tree-dump.c (dump_files): Add .lower entry.
        * tree-dump.c (dump_files): Add .lower entry.
        * tree-optimize.c (optimize_function_tree): Move lower_function_body,
        * tree-optimize.c (optimize_function_tree): Move lower_function_body,
        (tree_rest_of_compilation): here.  Tidy .useless dump.
        (tree_rest_of_compilation): here.  Tidy .useless dump.
2003-10-25  Jan Hubicka  
2003-10-25  Jan Hubicka  
        * c-common.c (c_estimate_num_insns_1): Kill.
        * c-common.c (c_estimate_num_insns_1): Kill.
        (c_estimate_num_insns): Kill.
        (c_estimate_num_insns): Kill.
        * c-common.h (c_estimate_num_insns): Kill.
        * c-common.h (c_estimate_num_insns): Kill.
        * c-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * c-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * cp-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * cp-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * objc-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * objc-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * java/lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * java/lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        (java_estimate_num_insns_1, java_estimate_num_insns): Kill.
        (java_estimate_num_insns_1, java_estimate_num_insns): Kill.
        * cgraphunit (cgraph_analyze_function): Use estimate_num_insns.
        * cgraphunit (cgraph_analyze_function): Use estimate_num_insns.
        * tree-eh.c (decide_copy_try_finally): Likewise.
        * tree-eh.c (decide_copy_try_finally): Likewise.
        * tree-inline.c (limits_allow_inilining, optimize_inline_calls): Likewise.
        * tree-inline.c (limits_allow_inilining, optimize_inline_calls): Likewise.
        (estimate_num_insns_1, estimate_num_insns): New functions.
        (estimate_num_insns_1, estimate_num_insns): New functions.
        * langhooks-def.h (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * langhooks-def.h (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
        * langhooks.h (estimate_num_inssn): Kill.
        * langhooks.h (estimate_num_inssn): Kill.
        * tree-inline.h (estimate_num_insns): Declare.
        * tree-inline.h (estimate_num_insns): Declare.
2003-10-25  Zdenek Dvorak  
2003-10-25  Zdenek Dvorak  
        * gimple-low.c: New.
        * gimple-low.c: New.
        * Makefile.in (gimple-low.o): Add.
        * Makefile.in (gimple-low.o): Add.
        * domwalk.c (walk_dominator_tree): Consider COND_EXPR a control
        * domwalk.c (walk_dominator_tree): Consider COND_EXPR a control
        structure.
        structure.
        * tree-cfg.c (make_cond_expr_blocks, linearize_control_structures,
        * tree-cfg.c (make_cond_expr_blocks, linearize_control_structures,
        linearize_cond_expr): Removed.
        linearize_cond_expr): Removed.
        (thread_jumps, tree_forwarder_block_p): New.
        (thread_jumps, tree_forwarder_block_p): New.
        (merge_tree_blocks): Unused now.
        (merge_tree_blocks): Unused now.
        (phi_alternatives_equal): Modified for use in jump threading.
        (phi_alternatives_equal): Modified for use in jump threading.
        (enum find_location_action): Remove EDGE_INSERT_LOCATION_NEW_ELSE.
        (enum find_location_action): Remove EDGE_INSERT_LOCATION_NEW_ELSE.
        (make_blocks): Don't call make_cond_expr_blocks.
        (make_blocks): Don't call make_cond_expr_blocks.
        (set_parent_stmt): Ensure we don't set COND_EXPR as a parent
        (set_parent_stmt): Ensure we don't set COND_EXPR as a parent
        statement.
        statement.
        (find_contained_blocks): Remove COND_EXPR alternative.
        (find_contained_blocks): Remove COND_EXPR alternative.
        (make_cond_expr_edges): Handle lowered gotos.
        (make_cond_expr_edges): Handle lowered gotos.
        (cleanup_tree_cfg): Don't call linearize_control_structures,
        (cleanup_tree_cfg): Don't call linearize_control_structures,
        call thread_jumps and verify_flow_info and rerun cleanup_control_flow.
        call thread_jumps and verify_flow_info and rerun cleanup_control_flow.
        (remove_unreachable_block): Remove handling of structured COND_EXPRs.
        (remove_unreachable_block): Remove handling of structured COND_EXPRs.
        (remove_bb): Fix warning for removed goto exprs.
        (remove_bb): Fix warning for removed goto exprs.
        (cleanup_control_flow, cleanup_cond_expr_graph,
        (cleanup_control_flow, cleanup_cond_expr_graph,
        cleanup_switch_expr_graph, find_taken_edge_cond_expr,
        cleanup_switch_expr_graph, find_taken_edge_cond_expr,
        bsi_insert_before, find_insert_location, bsi_insert_on_edge_immediate):
        bsi_insert_before, find_insert_location, bsi_insert_on_edge_immediate):
        Handle lowered COND_EXPRs.
        Handle lowered COND_EXPRs.
        (is_ctrl_structure): Remove COND_EXPR.
        (is_ctrl_structure): Remove COND_EXPR.
        (is_ctrl_stmt): Add COND_EXPR.
        (is_ctrl_stmt): Add COND_EXPR.
        (tree_verify_flow_info): Check validity of COND_EXPRs.
        (tree_verify_flow_info): Check validity of COND_EXPRs.
        (thread_edge): Moved from tree-ssa-dom.c.
        (thread_edge): Moved from tree-ssa-dom.c.
        * tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        * tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
        Declaration changed.
        Declaration changed.
        (thread_edge, lower_function_body): Declare.
        (thread_edge, lower_function_body): Declare.
        * tree-optimize.c (optimize_function_tree): Call lower_function_body.
        * tree-optimize.c (optimize_function_tree): Call lower_function_body.
        * tree-pretty-print.c (dump_generic_node): Dump lowered cond_exprs in
        * tree-pretty-print.c (dump_generic_node): Dump lowered cond_exprs in
        full.
        full.
        * tree-ssa-copyprop.c (fixup_var_scope): Handle non-SSA_NAMEs.
        * tree-ssa-copyprop.c (fixup_var_scope): Handle non-SSA_NAMEs.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Cleaned up when
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Cleaned up when
        COND_EXPRs are lowered.
        COND_EXPRs are lowered.
        * tree-ssa-dom.c (thread_edge): Moved to tree-cfg.c.
        * tree-ssa-dom.c (thread_edge): Moved to tree-cfg.c.
        (tree_ssa_dominator_optimize_1): Dumps and setting of vars_to_rename
        (tree_ssa_dominator_optimize_1): Dumps and setting of vars_to_rename
        moved from thread_edge.
        moved from thread_edge.
        (optimize_stmt): Pass block iterator to cleanup_cond_expr_graph and
        (optimize_stmt): Pass block iterator to cleanup_cond_expr_graph and
        cleanup_switch_expr_graph.
        cleanup_switch_expr_graph.
        * tree-ssa.c (insert_copy_on_edge): Fixup scope for emitted variables.
        * tree-ssa.c (insert_copy_on_edge): Fixup scope for emitted variables.
        * dominance.c (BB_NODE): Use VARRAY_GENERIC_PTR_NOGC.
        * dominance.c (BB_NODE): Use VARRAY_GENERIC_PTR_NOGC.
        (calculate_dominance_info): Use VARRAY_GENERIC_PTR_NOGC_INIT.
        (calculate_dominance_info): Use VARRAY_GENERIC_PTR_NOGC_INIT.
        * varray.c (element): Add GENERIC_PTR_NOGC entry.
        * varray.c (element): Add GENERIC_PTR_NOGC entry.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_GENERIC_NOGC.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_GENERIC_NOGC.
        (union varray_data_tag): Add generic_nogc.
        (union varray_data_tag): Add generic_nogc.
        (VARRAY_GENERIC_PTR_NOGC_INIT,  VARRAY_GENERIC_PTR_NOGC,
        (VARRAY_GENERIC_PTR_NOGC_INIT,  VARRAY_GENERIC_PTR_NOGC,
        VARRAY_PUSH_GENERIC_PTR_NOGC, VARRAY_TOP_GENERIC_PTR_NOGC): New.
        VARRAY_PUSH_GENERIC_PTR_NOGC, VARRAY_TOP_GENERIC_PTR_NOGC): New.
2003-10-25  Jan Hubicka  
2003-10-25  Jan Hubicka  
        * cppcharset.c (one_utf8_to_utf32): Initialize 's' to silence warning.
        * cppcharset.c (one_utf8_to_utf32): Initialize 's' to silence warning.
2003-10-25  Jan Hubicka  
2003-10-25  Jan Hubicka  
        * fold-const.c (nondestructive_fold_binary_to_constant): Realize that
        * fold-const.c (nondestructive_fold_binary_to_constant): Realize that
        (plus (address) (const_int)) is a constant.
        (plus (address) (const_int)) is a constant.
2003-10-25  Jan Hubicka  
2003-10-25  Jan Hubicka  
        * opts.c (decode_options): Uncomment unit-at-a-time setting
        * opts.c (decode_options): Uncomment unit-at-a-time setting
        * params.def: Syncrhonize with manline.
        * params.def: Syncrhonize with manline.
        * tree-inline.c (initialize_inlined_parameters):  Set variable as
        * tree-inline.c (initialize_inlined_parameters):  Set variable as
        gimplified.
        gimplified.
2003-10-24  Steven Bosscher  
2003-10-24  Steven Bosscher  
        * gimplify.c (create_artificial_label): New function.
        * gimplify.c (create_artificial_label): New function.
        (build_and_jump): Use it.
        (build_and_jump): Use it.
        * c-simplify.c (c_gimplify_stmt): Likewise.
        * c-simplify.c (c_gimplify_stmt): Likewise.
        (gimplify_condition): Likewise.
        (gimplify_condition): Likewise.
        * tree-cfg.c (factor_computed_gotos, tree_block_forwards_to,
        * tree-cfg.c (factor_computed_gotos, tree_block_forwards_to,
        handle_switch_fallthru, handle_switch_split): Likewise.
        handle_switch_fallthru, handle_switch_split): Likewise.
        * tree-ssa-dom.c (thread_edge): Likewise.
        * tree-ssa-dom.c (thread_edge): Likewise.
        * tree-ssa-pre.c (split_critical_edges): Likewise.
        * tree-ssa-pre.c (split_critical_edges): Likewise.
        * tree-tailcall.c (eliminate_tail_call): Likewise.
        * tree-tailcall.c (eliminate_tail_call): Likewise.
        * tree-eh.c (frob_into_branch_around,
        * tree-eh.c (frob_into_branch_around,
        honor_protect_cleanup_actions, lower_try_finally_nofallthru,
        honor_protect_cleanup_actions, lower_try_finally_nofallthru,
        lower_try_finally_onedest, lower_try_finally_copy,
        lower_try_finally_onedest, lower_try_finally_copy,
        lower_try_finally_switch, lower_catch, lower_eh_filter,
        lower_try_finally_switch, lower_catch, lower_eh_filter,
        lower_cleanup): Likewise.
        lower_cleanup): Likewise.
        (make_label): Remove.
        (make_label): Remove.
        * tree-simple.h (create_artificial_label): Add prototype.
        * tree-simple.h (create_artificial_label): Add prototype.
        * tree-inline.c (expand_call_inline): Make return label for
        * tree-inline.c (expand_call_inline): Make return label for
        inlined function artificial.
        inlined function artificial.
2003-10-23  Jeff Law  
2003-10-23  Jeff Law  
        * timevar.def (TV_TREE_SSA_THREAD_JUMPS): New timevar.
        * timevar.def (TV_TREE_SSA_THREAD_JUMPS): New timevar.
        * tree-dump.c (dump_files): Add dump file for jump threading.
        * tree-dump.c (dump_files): Add dump file for jump threading.
        * tree.h (TDI_thread_jumps): New enum member.
        * tree.h (TDI_thread_jumps): New enum member.
        * tree-cfg.c (tree_block_forwards_to): No longer static.
        * tree-cfg.c (tree_block_forwards_to): No longer static.
        * tree-flow.h (tree_block_forwards_to): Prototype.
        * tree-flow.h (tree_block_forwards_to): Prototype.
        (tree_ssa_dominator_thread_jumps): Likewise.
        (tree_ssa_dominator_thread_jumps): Likewise.
        * tree-optimize.c (optimize_function_tree): Call jump threader.
        * tree-optimize.c (optimize_function_tree): Call jump threader.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): New function.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize_1): New function.
        Common code for redundancy elimination and jump threading on
        Common code for redundancy elimination and jump threading on
        the dominator tree.  Slightly different callback initialization
        the dominator tree.  Slightly different callback initialization
        for redundancy elimination and jump threading.  Initialize
        for redundancy elimination and jump threading.  Initialize
        block forwardable attribute.
        block forwardable attribute.
        (tree_ssa_dominator_optimize): Call tree_ssa_dominator_optimize_1.
        (tree_ssa_dominator_optimize): Call tree_ssa_dominator_optimize_1.
        (tree_ssa_dominator_thread_jumps): New function.
        (tree_ssa_dominator_thread_jumps): New function.
        (thread_edge): Mark results of PHI nodes as needing rewriting if
        (thread_edge): Mark results of PHI nodes as needing rewriting if
        we have threaded through a block with PHI nodes.
        we have threaded through a block with PHI nodes.
        (thread_through_successor): If thread_through_phis is nonzero,
        (thread_through_successor): If thread_through_phis is nonzero,
        then allow jump threading through blocks with PHI nodes.  If the
        then allow jump threading through blocks with PHI nodes.  If the
        target block is a forwarder block, then forward the jump.
        target block is a forwarder block, then forward the jump.
        (thread_jumps_walk_stmts): Statement walker for dominator thread
        (thread_jumps_walk_stmts): Statement walker for dominator thread
        jumping.
        jumping.
        * tree-ssa-dom.c (record_equivalence_from_incoming_edge): Fix
        * tree-ssa-dom.c (record_equivalence_from_incoming_edge): Fix
        comment typo.
        comment typo.
2003-10-23  Richard Henderson  
2003-10-23  Richard Henderson  
        * gimplify.c (gimplify_*): Return gimplify_status.
        * gimplify.c (gimplify_*): Return gimplify_status.
        (gimple_add_tmp_var): Set seen_in_bind_expr.
        (gimple_add_tmp_var): Set seen_in_bind_expr.
        (gimplify_bind_expr): Likewise.  Kill if 0 code.
        (gimplify_bind_expr): Likewise.  Kill if 0 code.
        (gimplify_return_expr): Cope with error marks.
        (gimplify_return_expr): Cope with error marks.
        (gimple_push_cleanup): Do nothing if errors seen.
        (gimple_push_cleanup): Do nothing if errors seen.
        (gimplify_expr): Cope with error marks.  Use gimplify_status to
        (gimplify_expr): Cope with error marks.  Use gimplify_status to
        decide when to exit the main loop.  Zap statements with errors.
        decide when to exit the main loop.  Zap statements with errors.
        (gimplify_body): Return void.
        (gimplify_body): Return void.
        (keep_function_tree_in_gimple_form): Don't exit on errors.
        (keep_function_tree_in_gimple_form): Don't exit on errors.
        (gimplify_function_tree): Return bool.  Don't exit on errors.
        (gimplify_function_tree): Return bool.  Don't exit on errors.
        * langhooks.c (lhd_gimplify_expr): Return GS_UNHANDLED.
        * langhooks.c (lhd_gimplify_expr): Return GS_UNHANDLED.
        * langhooks.h (struct lang_hooks): Update docs for gimplify_expr.
        * langhooks.h (struct lang_hooks): Update docs for gimplify_expr.
        * tree-optimize.c (optimize_function_tree): Don't exit on errors.
        * tree-optimize.c (optimize_function_tree): Don't exit on errors.
        Move delete_tree_cfg call outside optimization clause.
        Move delete_tree_cfg call outside optimization clause.
        (tree_rest_of_compilation): Don't exit on errors.
        (tree_rest_of_compilation): Don't exit on errors.
        * tree-simple.h (enum gimplify_status): New.
        * tree-simple.h (enum gimplify_status): New.
        (gimplify_expr, gimplify_stmt, gimplify_body): Update.
        (gimplify_expr, gimplify_stmt, gimplify_body): Update.
        * tree-ssa.c (rewrite_out_of_ssa): Move delete_tree_cfg call to
        * tree-ssa.c (rewrite_out_of_ssa): Move delete_tree_cfg call to
        optimize_function_tree.
        optimize_function_tree.
        * tree.h (struct tree_decl): Add seen_in_bind_expr.
        * tree.h (struct tree_decl): Add seen_in_bind_expr.
        (gimplify_function_tree): Update.
        (gimplify_function_tree): Update.
        * c-common.c (c_add_case_label): Unify three error exit paths.
        * c-common.c (c_add_case_label): Unify three error exit paths.
        Create a normal label, not a case label to suppress unreachable
        Create a normal label, not a case label to suppress unreachable
        code warning.
        code warning.
        * c-simplify.c (c_build_bind_expr): Don't create an empty bind
        * c-simplify.c (c_build_bind_expr): Don't create an empty bind
        body.  Pass entire bind_expr to gimplify_stmt.
        body.  Pass entire bind_expr to gimplify_stmt.
        (gimplify_block): Don't abort on mismatches if errors seen.
        (gimplify_block): Don't abort on mismatches if errors seen.
        (gimplify_expr_stmt): Cope with error marks.
        (gimplify_expr_stmt): Cope with error marks.
        (gimplify_decl_stmt): Likewise.
        (gimplify_decl_stmt): Likewise.
        (c_gimplify_expr): Return gimplify_status.
        (c_gimplify_expr): Return gimplify_status.
2003-10-22  Daniel Berlin  
2003-10-22  Daniel Berlin  
        * tree-pretty-print.c (dump_generic_node): Kill off ELEFT_NODE.
        * tree-pretty-print.c (dump_generic_node): Kill off ELEFT_NODE.
        Print out status of new EUSE_LVAL flag.
        Print out status of new EUSE_LVAL flag.
        * tree-ssa-pre.c: #include alloc-pool.h
        * tree-ssa-pre.c: #include alloc-pool.h
        (append_eref_to_block): Inline.
        (append_eref_to_block): Inline.
        (names_match_p): Ditto.
        (names_match_p): Ditto.
        (pre_expression): Take sbitmap of variables to rename so we can
        (pre_expression): Take sbitmap of variables to rename so we can
        mark our new variable if necessary.
        mark our new variable if necessary.
        (insert_occ_in_preorder): Completely redo to be an O(n log n)
        (insert_occ_in_preorder): Completely redo to be an O(n log n)
        algorithm worst case, instead O(n^2) all the time.
        algorithm worst case, instead O(n^2) all the time.
        (build_dfn_array): New function.
        (build_dfn_array): New function.
        (eref_compare): Ditto.
        (eref_compare): Ditto.
        (preorder_count): Remove no-longer used variable.
        (preorder_count): Remove no-longer used variable.
        (pre_stats): Add new stats about memory use.
        (pre_stats): Add new stats about memory use.
        (struct expr_info): add loadpre_cand member.
        (struct expr_info): add loadpre_cand member.
        (euse_node_pool): New alloc-pool
        (euse_node_pool): New alloc-pool
        (eref_node_pool): Ditto
        (eref_node_pool): Ditto
        (create_expr_ref): Use them.
        (create_expr_ref): Use them.
        (expr_phi_insertion): Insert on PHI's of VUSES for loadpre cands.
        (expr_phi_insertion): Insert on PHI's of VUSES for loadpre cands.
        Not all expressions have uses (left occurrences don't).
        Not all expressions have uses (left occurrences don't).
        (load_modified_real_occ_real_occ): Return false, not abort.
        (load_modified_real_occ_real_occ): Return false, not abort.
        (process_delayed_rename): Remove useless fibheap, do proper LVAL
        (process_delayed_rename): Remove useless fibheap, do proper LVAL
        handling.
        handling.
        (insert_euse_in_preorder_dt_order_1): No more ELEFT_NODE's.
        (insert_euse_in_preorder_dt_order_1): No more ELEFT_NODE's.
        (finalize_1): Ditto.
        (finalize_1): Ditto.
        (set_save): Ditto.
        (set_save): Ditto.
        (really_available_def): New function.
        (really_available_def): New function.
        (finalize_2): Use really_available_def, not EUSE_SAVE, during EPHI
        (finalize_2): Use really_available_def, not EUSE_SAVE, during EPHI
        minimization.
        minimization.
        (names_match_p): Handle INDIRECT_REF properly.
        (names_match_p): Handle INDIRECT_REF properly.
        (call_modifies_slot): Removed.
        (call_modifies_slot): Removed.
        (add_call_to_ei): Removed.
        (add_call_to_ei): Removed.
        (process_left_occs_and_kills): Fix.
        (process_left_occs_and_kills): Fix.
        (pre_expression): Zero out counts.
        (pre_expression): Zero out counts.
        (collect_expressions): Split out from tree_perform_ssapre. Do this
        (collect_expressions): Split out from tree_perform_ssapre. Do this
        in domtree order.
        in domtree order.
        (tree_perform_ssapre): Create and free alloc-pools.
        (tree_perform_ssapre): Create and free alloc-pools.
        Rename new variables that need to be renamed.
        Rename new variables that need to be renamed.
        * tree.c (tree_size): Remove ELEFT_NODE.
        * tree.c (tree_size): Remove ELEFT_NODE.
        (tree_node_size): Ditto.
        (tree_node_size): Ditto.
        (is_essa_node): Ditto.
        (is_essa_node): Ditto.
        * tree.def (ELEFT_NODE): Gone.
        * tree.def (ELEFT_NODE): Gone.
        * tree.h (EREF_NODE_CHECK): No more ELEFT_NODE.
        * tree.h (EREF_NODE_CHECK): No more ELEFT_NODE.
        (struct tree_eref_common): Add ID flag.
        (struct tree_eref_common): Add ID flag.
        (struct tree_euse_node): Add lval flag.
        (struct tree_euse_node): Add lval flag.
        (EREF_ID): New macro.
        (EREF_ID): New macro.
        (EUSE_LVAL): New macro.
        (EUSE_LVAL): New macro.
2003-10-22  Daniel Berlin  
2003-10-22  Daniel Berlin  
        * tree-flow-inline.h (add_dom_child): XMALLOC, not GGC_ALLOC,
        * tree-flow-inline.h (add_dom_child): XMALLOC, not GGC_ALLOC,
        the bitmap.
        the bitmap.
        (clear_dom_children): XFREE the bitmap.
        (clear_dom_children): XFREE the bitmap.
2003-10-22  Andrew MacLeod  
2003-10-22  Andrew MacLeod  
        * tree-ssa-live.c (new_tree_live_info, (delete_tree_live_info,
        * tree-ssa-live.c (new_tree_live_info, (delete_tree_live_info,
        live_worklist, set_if_valid, add_livein_if_notdef,
        live_worklist, set_if_valid, add_livein_if_notdef,
        calculate_live_on_entry, calculate_live_on_exit,
        calculate_live_on_entry, calculate_live_on_exit,
        add_conflicts_if_valid, dump_live_info): Use bitmap instead of sbitmap.
        add_conflicts_if_valid, dump_live_info): Use bitmap instead of sbitmap.
        (build_tree_conflict_graph): Use bitmap, Change mechanism for
        (build_tree_conflict_graph): Use bitmap, Change mechanism for
        adding conflicts between live-on-entry partitions.
        adding conflicts between live-on-entry partitions.
        * tree-ssa-live.h (struct tree_live_info_d): Switch to bitmaps.
        * tree-ssa-live.h (struct tree_live_info_d): Switch to bitmaps.
        (partition_is_global, live_entry_blocks, live_on_exit,
        (partition_is_global, live_entry_blocks, live_on_exit,
        live_merge_and_clear, make_live_on_entry): Switch to bitmaps.
        live_merge_and_clear, make_live_on_entry): Switch to bitmaps.
        * tree-ssa.c (struct _elim_graph): Remove bitmaps, use varrays.
        * tree-ssa.c (struct _elim_graph): Remove bitmaps, use varrays.
        (new_elim_graph, clear_elim_graph, delete_elim_graph): Switch from
        (new_elim_graph, clear_elim_graph, delete_elim_graph): Switch from
        old bitmap implementation.
        old bitmap implementation.
        (elim_graph_size): New. Number of elements in elimination graph.
        (elim_graph_size): New. Number of elements in elimination graph.
        (elim_graph_add_node): New. Add an element to the elim-graph.
        (elim_graph_add_node): New. Add an element to the elim-graph.
        (elim_graph_add_edge): New. Add an edge to the elim-graph.
        (elim_graph_add_edge): New. Add an edge to the elim-graph.
        (elim_graph_remove_succ_edge): New. Remove an edge for which a node
        (elim_graph_remove_succ_edge): New. Remove an edge for which a node
        has a successor.
        has a successor.
        (FOR_EACH_ELIM_GRAPH_SUCC): Find all successor nodes.
        (FOR_EACH_ELIM_GRAPH_SUCC): Find all successor nodes.
        (FOR_EACH_ELIM_GRAPH_PRED): Find all predeccesor nodes.
        (FOR_EACH_ELIM_GRAPH_PRED): Find all predeccesor nodes.
        (eliminate_name, eliminate_build, elim_forward,
        (eliminate_name, eliminate_build, elim_forward,
        elim_unvisited_predecessor, elim_backward, elim_create, eliminate_phi):
        elim_unvisited_predecessor, elim_backward, elim_create, eliminate_phi):
        Use new elim-graph routines.
        Use new elim-graph routines.
        (rewrite_out_of_ssa): Enable single-definition compaction when not
        (rewrite_out_of_ssa): Enable single-definition compaction when not
        combining temporaries.
        combining temporaries.
2003-10-21  Richard Henderson  
2003-10-21  Richard Henderson  
        * gimplify.c: Sort functions into use order, and all gimplification
        * gimplify.c: Sort functions into use order, and all gimplification
        functions to the end.
        functions to the end.
2003-10-22  Jeff Law  
2003-10-22  Jeff Law  
        * tree-cfg.c (thread_unconditional_jumps): New function.
        * tree-cfg.c (thread_unconditional_jumps): New function.
        (tree_block_forwards_to): Likewise.
        (tree_block_forwards_to): Likewise.
        (cleanup_tree_cfg): Call thread_unconditional_jumps.
        (cleanup_tree_cfg): Call thread_unconditional_jumps.
        * tree-flow.h (bb_ann_t): Add forwardable status bit.
        * tree-flow.h (bb_ann_t): Add forwardable status bit.
        * tree-dump.c (dump_files): Add entry for TDI_none.
        * tree-dump.c (dump_files): Add entry for TDI_none.
        (dump_begin): Do nothing for TDI_none.
        (dump_begin): Do nothing for TDI_none.
        (dump_enable_all, dump_switch_p): Start our scan at TDI_none + 1.
        (dump_enable_all, dump_switch_p): Start our scan at TDI_none + 1.
        * tree.h (tree_dump_index): Add.
        * tree.h (tree_dump_index): Add.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If we have altered the
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If we have altered the
        CFG and we have variables to [re]rename, go ahead and rename them before
        CFG and we have variables to [re]rename, go ahead and rename them before
        starting the next iteration of the dominator optimizer.
        starting the next iteration of the dominator optimizer.
2003-10-21  Jason Merrill  
2003-10-21  Jason Merrill  
        * gimplify.c (gimplify_modify_expr): Require a regvar on either
        * gimplify.c (gimplify_modify_expr): Require a regvar on either
        the lhs or rhs if we're dealing with a renameable type.
        the lhs or rhs if we're dealing with a renameable type.
        (canonicalize_component_ref): New fn.
        (canonicalize_component_ref): New fn.
        (gimplify_compound_lval): Use it.
        (gimplify_compound_lval): Use it.
        (gimplify_conversion): Use it.
        (gimplify_conversion): Use it.
        (gimplify_expr): Lose redundant STRIP_MAIN_TYPE_NOPS.
        (gimplify_expr): Lose redundant STRIP_MAIN_TYPE_NOPS.
        Discard conversions in void context.
        Discard conversions in void context.
2003-10-21  Daniel Berlin  
2003-10-21  Daniel Berlin  
        * tree-ssa-pre.c (pre_expression): Free and allocate the
        * tree-ssa-pre.c (pre_expression): Free and allocate the
        ephi_pindex_htab and phi_pred_cache in this function only.
        ephi_pindex_htab and phi_pred_cache in this function only.
        (phi_pred_cache): New array to store cached phi preds, to avoid
        (phi_pred_cache): New array to store cached phi preds, to avoid
        recomputation and unnecessary copying.
        recomputation and unnecessary copying.
        (subst_phis): Use it.
        (subst_phis): Use it.
        (added_phis): array of added phis that is marked for GC.
        (added_phis): array of added phis that is marked for GC.
        * Makefile.in: Add tree-ssa-pre.c to the gtype files, and
        * Makefile.in: Add tree-ssa-pre.c to the gtype files, and
        gt-tree-ssa-pre.h to the list of generated files.
        gt-tree-ssa-pre.h to the list of generated files.
2003-10-21  Jason Merrill  
2003-10-21  Jason Merrill  
        PR optimization/12661
        PR optimization/12661
        * tree-dfa.c (get_expr_operands): Handle TRUTH_NOT_EXPR.
        * tree-dfa.c (get_expr_operands): Handle TRUTH_NOT_EXPR.
        * tree-simple.c (is_gimple_rhs): Allow TRUTH_NOT_EXPR.
        * tree-simple.c (is_gimple_rhs): Allow TRUTH_NOT_EXPR.
        * gimplify.c (gimplify_expr) : Don't rewrite to an
        * gimplify.c (gimplify_expr) : Don't rewrite to an
        EQ_EXPR.
        EQ_EXPR.
2003-10-21  Jan Hubicka  
2003-10-21  Jan Hubicka  
        * haifa-sched.c (choose_ready): Initialize index.
        * haifa-sched.c (choose_ready): Initialize index.
        * tree-tailcall.c (bb_optimize_tail_calls): Initialize has_return.
        * tree-tailcall.c (bb_optimize_tail_calls): Initialize has_return.
        * f/lex.c (ffelex_cfelex_): Initialize d.
        * f/lex.c (ffelex_cfelex_): Initialize d.
2003-10-20  Diego Novillo  
2003-10-20  Diego Novillo  
        Fix PR optimization/12688
        Fix PR optimization/12688
        * tree-dfa.c (get_stmt_operands): Don't return early when dealing
        * tree-dfa.c (get_stmt_operands): Don't return early when dealing
        with an empty statement.
        with an empty statement.
        * tree-ssa-ccp.c (set_rhs): If the expression has no side effects,
        * tree-ssa-ccp.c (set_rhs): If the expression has no side effects,
        replace the statement with an empty statement.
        replace the statement with an empty statement.
2003-10-20  Andrew MacLeod  
2003-10-20  Andrew MacLeod  
        * tree-ssa-dce.c (processed): Change to an sbitmap.
        * tree-ssa-dce.c (processed): Change to an sbitmap.
        (mark_necessary): Test bits in 'processed'.
        (mark_necessary): Test bits in 'processed'.
        (tree_ssa_dce): Initialize/free processed as an sbitmap.
        (tree_ssa_dce): Initialize/free processed as an sbitmap.
2003-10-20  Diego Novillo  
2003-10-20  Diego Novillo  
        * tree-cfg.c (bsi_prev): Also copy the context from the previous
        * tree-cfg.c (bsi_prev): Also copy the context from the previous
        iterator.
        iterator.
2003-10-18  Richard Henderson  
2003-10-18  Richard Henderson  
        * builtins.c (simplify_builtin): Handle BUILT_IN_CONSTANT_P.
        * builtins.c (simplify_builtin): Handle BUILT_IN_CONSTANT_P.
2003-10-18  Zdenek Dvorak  
2003-10-18  Zdenek Dvorak  
        * tree-tailcall.c: New.
        * tree-tailcall.c: New.
        * Makefile.in (tree-tailcall.o): Add.
        * Makefile.in (tree-tailcall.o): Add.
        * function.c (assign_parms): Setting of current_function_stdarg
        * function.c (assign_parms): Setting of current_function_stdarg
        moved ...
        moved ...
        (allocate_struct_function): ... here.
        (allocate_struct_function): ... here.
        * tree-dump.c (dump_files): Add .tail dump.
        * tree-dump.c (dump_files): Add .tail dump.
        * tree-flow.h (tree_optimize_tail_calls): Declare.
        * tree-flow.h (tree_optimize_tail_calls): Declare.
        * tree-optimize.c (optimize_function_tree): Call
        * tree-optimize.c (optimize_function_tree): Call
        tree_optimize_tail_calls.
        tree_optimize_tail_calls.
        * tree.h (enum tree_dump_index): Add TDI_tail.
        * tree.h (enum tree_dump_index): Add TDI_tail.
2003-10-18  Jan Hubicka  
2003-10-18  Jan Hubicka  
        * tree-ssa-copyprop.c (move_var_to_scope):  Do not clear abstract
        * tree-ssa-copyprop.c (move_var_to_scope):  Do not clear abstract
        origin for static variables.
        origin for static variables.
2003-10-18  Jan Hubicka  
2003-10-18  Jan Hubicka  
        * integrate.c (copy_decl_for_inlinig): Fix copying of copies.
        * integrate.c (copy_decl_for_inlinig): Fix copying of copies.
2003-10-18  Jan Hubicka  
2003-10-18  Jan Hubicka  
        * cgraphunit.c (cgraph_analyze_function):  Fix call of estimate_num_insns.
        * cgraphunit.c (cgraph_analyze_function):  Fix call of estimate_num_insns.
2003-10-17  Kazu Hirata  
2003-10-17  Kazu Hirata  
        * ChangeLog.tree-ssa: Fix typos.
        * ChangeLog.tree-ssa: Fix typos.
        * tree-alias-common.c: Fix comment typos.
        * tree-alias-common.c: Fix comment typos.
        * tree-cfg.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-eh.c: Likewise.
        * tree-eh.c: Likewise.
        * tree-flow.h: Likewise.
        * tree-flow.h: Likewise.
        * tree-iterator.h: Likewise.
        * tree-iterator.h: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-live.h: Likewise.
        * tree-ssa-live.h: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
2003-10-17  Andrew MacLeod  
2003-10-17  Andrew MacLeod  
        * tree-ssa-dce.c (processed): New Global vector.
        * tree-ssa-dce.c (processed): New Global vector.
        (mark_necessary): Check if SSA_NAME has already been processed first.
        (mark_necessary): Check if SSA_NAME has already been processed first.
        (find_useful_stmts, process_worklist): Change call to mark_necessary().
        (find_useful_stmts, process_worklist): Change call to mark_necessary().
        (tree_ssa_dce): Initialize and free processed vector.
        (tree_ssa_dce): Initialize and free processed vector.
        * tree-cfg.c (handle_switch_fallthru): A new basic block can result
        * tree-cfg.c (handle_switch_fallthru): A new basic block can result
        from splitting edges of nested switch stmts.
        from splitting edges of nested switch stmts.
        (handle_switch_split): If a new block is created, restart the loop for
        (handle_switch_split): If a new block is created, restart the loop for
        inserting GOTO's to handle the new block.
        inserting GOTO's to handle the new block.
2003-10-17  Jan Hubicka  
2003-10-17  Jan Hubicka  
        * tree-cfg.c (remove_useless_stmts_and_vars_bind): Fix handling of
        * tree-cfg.c (remove_useless_stmts_and_vars_bind): Fix handling of
        static variables.
        static variables.
2003-10-16  Richard Henderson  
2003-10-16  Richard Henderson  
        * common.opt (fdisable-gimple): Remove.
        * common.opt (fdisable-gimple): Remove.
        * flags.h (flag_disable_gimple): Remove.
        * flags.h (flag_disable_gimple): Remove.
        * toplev.c (flag_disable_gimple): Remove.
        * toplev.c (flag_disable_gimple): Remove.
        (process_options): Don't check it.
        (process_options): Don't check it.
        (lang_independent_options): Don't set it.
        (lang_independent_options): Don't set it.
        * opts.c (common_handle_option): Likewise.
        * opts.c (common_handle_option): Likewise.
        * gimplify.c (keep_function_tree_in_gimple_form): Don't check it.
        * gimplify.c (keep_function_tree_in_gimple_form): Don't check it.
        * c-semantics.c (expand_stmt_toplev): Likewise.
        * c-semantics.c (expand_stmt_toplev): Likewise.
        * tree-optimize.c (tree_rest_of_compilation): Likewise.
        * tree-optimize.c (tree_rest_of_compilation): Likewise.
        * doc/invoke.texi: Don't document it.
        * doc/invoke.texi: Don't document it.
2003-10-16  Roger Sayle  
2003-10-16  Roger Sayle  
        * fold-const.c: Merge from mainline.
        * fold-const.c: Merge from mainline.
        * tree.c (associate_tree_code, commutative_tree_code): Use a
        * tree.c (associate_tree_code, commutative_tree_code): Use a
        switch statement instead of a sequence of comparisons.
        switch statement instead of a sequence of comparisons.
2003-10-16  Richard Henderson  
2003-10-16  Richard Henderson  
        * gimplify.c (maybe_protect_cleanup): Remove.
        * gimplify.c (maybe_protect_cleanup): Remove.
        * tree-simple.h (maybe_protect_cleanup): Remove.
        * tree-simple.h (maybe_protect_cleanup): Remove.
        * c-simplify.c (gimplify_cleanup): Don't call it.
        * c-simplify.c (gimplify_cleanup): Don't call it.
2003-10-16  Jeff Law  
2003-10-16  Jeff Law  
        * tree-cfg.c (found_computed_goto): New global for computed goto
        * tree-cfg.c (found_computed_goto): New global for computed goto
        factoring/unfactoring.
        factoring/unfactoring.
        (factored_computed_goto_label, factored_computed_goto): Likewise.
        (factored_computed_goto_label, factored_computed_goto): Likewise.
        (factor_computed_gotos): New function.
        (factor_computed_gotos): New function.
        (build_tree_cfg): Use it.
        (build_tree_cfg): Use it.
        (make_blocks): Record whether or not we find a computed goto.
        (make_blocks): Record whether or not we find a computed goto.
        (remove_useless_stmts_and_vars): Un-factor computed gotos.
        (remove_useless_stmts_and_vars): Un-factor computed gotos.
        (remove_useless_stmts_and_vars): Reset factored_computed_goto_label
        (remove_useless_stmts_and_vars): Reset factored_computed_goto_label
        and factored_computed_goto.
        and factored_computed_goto.
        * tree-ssa-dom.c (get_value_for, set_value_for): Move to the start
        * tree-ssa-dom.c (get_value_for, set_value_for): Move to the start
        of the file.  Delete pointless sanity checking.
        of the file.  Delete pointless sanity checking.
        * tree-ssa.c (currdefs): Now a varray instead of a hash table.
        * tree-ssa.c (currdefs): Now a varray instead of a hash table.
        (get_value_for, set_value_for): Corresponding changes.  Move to
        (get_value_for, set_value_for): Corresponding changes.  Move to
        the start of the file and delete pointless sanity checking.
        the start of the file and delete pointless sanity checking.
        (rewrite_into_ssa, dump_tree_ssa_stats): Corresponding changes.
        (rewrite_into_ssa, dump_tree_ssa_stats): Corresponding changes.
        (var_value_hash, var_value_eq): Kill.
        (var_value_hash, var_value_eq): Kill.
        * tree-ssa.c (rewrite_add_phi_arguments): Once we encounter a
        * tree-ssa.c (rewrite_add_phi_arguments): Once we encounter a
        rewritten PHI break the inner loop.
        rewritten PHI break the inner loop.
        * tree-ssa.c (insert_phi_nodes_for): Use EXECUTE_IF_AND_COMPL_IN_BITMAP.
        * tree-ssa.c (insert_phi_nodes_for): Use EXECUTE_IF_AND_COMPL_IN_BITMAP.
        * tree-dfa.c (create_phi_node):  Clear PHI_REWRITTEN on all new PHIs
        * tree-dfa.c (create_phi_node):  Clear PHI_REWRITTEN on all new PHIs
        (remove_all_phi_nodes_for): Set PHI_REWRITTEN on any PHIs which are
        (remove_all_phi_nodes_for): Set PHI_REWRITTEN on any PHIs which are
        not removed.
        not removed.
        * tree-ssa.c (rewrite_add_phi_arguments): Check the PHI node itself
        * tree-ssa.c (rewrite_add_phi_arguments): Check the PHI node itself
        to see if it has already been rewritten.
        to see if it has already been rewritten.
        * tree.h (PHI_REWRITTEN): New accessor macro.
        * tree.h (PHI_REWRITTEN): New accessor macro.
        (struct phi_node): New field rewritten.
        (struct phi_node): New field rewritten.
        * tree-flow.h (struct bb_ann_d): New field num_preds.
        * tree-flow.h (struct bb_ann_d): New field num_preds.
        * tree-dfa.c (create_phi_node): Get the number of predecessors from
        * tree-dfa.c (create_phi_node): Get the number of predecessors from
        the block's annotation.
        the block's annotation.
        * tree-ssa.c (rewrite_into_ssa): Compute number of preds for each
        * tree-ssa.c (rewrite_into_ssa): Compute number of preds for each
        block and store it into the block's annotation.
        block and store it into the block's annotation.
        (insert_phi_nodes_for): Get the number of preds for each block
        (insert_phi_nodes_for): Get the number of preds for each block
        from the block's annotation.
        from the block's annotation.
        * tree-ssa.c: Remove parallel lifetime analysis code from April 2003.
        * tree-ssa.c: Remove parallel lifetime analysis code from April 2003.
        (def_blocks_d): Remove PHI_INSERTION_POINTS field.
        (def_blocks_d): Remove PHI_INSERTION_POINTS field.
        (compute_global_livein): Accept livein/def bitmaps to use for
        (compute_global_livein): Accept livein/def bitmaps to use for
        life analyis rather than a varray of variables.  Callers updated.
        life analyis rather than a varray of variables.  Callers updated.
        Rewritten to compute life information for one variable at a
        Rewritten to compute life information for one variable at a
        time instead of several variables at once.
        time instead of several variables at once.
        (insert_phis_for_deferred_variables): Remove.
        (insert_phis_for_deferred_variables): Remove.
        (insert_phi_nodes_for): Lose varray argument.  Callers updated.
        (insert_phi_nodes_for): Lose varray argument.  Callers updated.
        No longer mess with deferring PHI insertions for variables.
        No longer mess with deferring PHI insertions for variables.
        (insert_phi_nodes): No longer need to deal with deferred variables.
        (insert_phi_nodes): No longer need to deal with deferred variables.
        Kill everything related to them.
        Kill everything related to them.
2003-10-15  Jeff Law  
2003-10-15  Jeff Law  
        * domwalk.c, domwalk.h: New files.
        * domwalk.c, domwalk.h: New files.
        * Makefile.in (OBJS-common): Add domwalk.c.
        * Makefile.in (OBJS-common): Add domwalk.c.
        (tree-ssa-dom.o): Add dependency on $(BASIC_BLOCK_H) and domwalk.h.
        (tree-ssa-dom.o): Add dependency on $(BASIC_BLOCK_H) and domwalk.h.
        (tree-ssa.o): Add dependency on domwalk.h.
        (tree-ssa.o): Add dependency on domwalk.h.
        (domwalk.o): Add dependencies.
        (domwalk.o): Add dependencies.
        * tree-ssa-dom.c: Include domwalk.h.
        * tree-ssa-dom.c: Include domwalk.h.
        (cfg_altered, vars_to_rename): Now globals.
        (cfg_altered, vars_to_rename): Now globals.
        (dom_walk_block_data): New structure for block data used by dominator
        (dom_walk_block_data): New structure for block data used by dominator
        walker.
        walker.
        (optimize_block, record_equivalences_from_block_entry): Kill.
        (optimize_block, record_equivalences_from_block_entry): Kill.
        (optimize_stmt): Lose "cfg_altered" argument.  Update callers.
        (optimize_stmt): Lose "cfg_altered" argument.  Update callers.
        Initialize may_have_exposed_new_symbols.
        Initialize may_have_exposed_new_symbols.
        (get_value_for, set_value_for): Lose "table" argument.  Update
        (get_value_for, set_value_for): Lose "table" argument.  Update
        callers.  Use const_and_copies table directly.
        callers.  Use const_and_copies table directly.
        (lookup_avail_expr): Lose "const_and_copies" argument.  Callers
        (lookup_avail_expr): Lose "const_and_copies" argument.  Callers
        updated.
        updated.
        (get_eq_expr_value): Similarly.  Also accept a pointer to the
        (get_eq_expr_value): Similarly.  Also accept a pointer to the
        vrp_variables. Callers updated.
        vrp_variables. Callers updated.
        (update_rhs_and_lookup_avail_expr): Similarly.
        (update_rhs_and_lookup_avail_expr): Similarly.
        (record_cond_is_true, record_cond_is_false): Similarly.
        (record_cond_is_true, record_cond_is_false): Similarly.
        (simplify_rhs_and_lookup_avail_expr): Similarly.
        (simplify_rhs_and_lookup_avail_expr): Similarly.
        (simplify_cond_and_lookup_avail_expr): Similarly.
        (simplify_cond_and_lookup_avail_expr): Similarly.
        (record_equivalences_from_phis): Similarly.
        (record_equivalences_from_phis): Similarly.
        (record_equivalences_from_incoming_edge): Similarly.  Also accept
        (record_equivalences_from_incoming_edge): Similarly.  Also accept
        a pointer to the block const_and_copies table and vrp_variables.
        a pointer to the block const_and_copies table and vrp_variables.
        Callers updated.
        Callers updated.
        (eliminate_redundant_computations): Similarly
        (eliminate_redundant_computations): Similarly
        (record_equivalences_from_stmt, thread_through_successor): Similarly.
        (record_equivalences_from_stmt, thread_through_successor): Similarly.
        (dom_opt_initialize_block): New function.  Perform block local
        (dom_opt_initialize_block): New function.  Perform block local
        initialization for the dominator optimizer.
        initialization for the dominator optimizer.
        (dom_opt_finalize_block): Renamed from finalize_block.  Get
        (dom_opt_finalize_block): Renamed from finalize_block.  Get
        block local varrays from walk_data.  Pop entry off block local
        block local varrays from walk_data.  Pop entry off block local
        data stack when complete.
        data stack when complete.
        (dom_opt_walk_stmts): New function.
        (dom_opt_walk_stmts): New function.
        (cprop_into_phis): Get block local varrays from walk_data.
        (cprop_into_phis): Get block local varrays from walk_data.
        (record_range): Get vrp varray by reference than by value.
        (record_range): Get vrp varray by reference than by value.
        (tree_ssa_dominator_optimize): Store incoming "vars" variable into
        (tree_ssa_dominator_optimize): Store incoming "vars" variable into
        global "vars_to_rename".  Initialize walk_data.  Use
        global "vars_to_rename".  Initialize walk_data.  Use
        walk_dominator_tree.
        walk_dominator_tree.
        (cprop_into_stmt): Initialize may_have_exposed_new_symbols.
        (cprop_into_stmt): Initialize may_have_exposed_new_symbols.
        * tree-ssa.c: Include domwalk.h
        * tree-ssa.c: Include domwalk.h
        (rewrite_finalize_block, rewrite_initialize_block): New functions
        (rewrite_finalize_block, rewrite_initialize_block): New functions
        extracted from rewrite_block.
        extracted from rewrite_block.
        (rewrite_walk_stmts, rewrite_add_phi_arguments): Similarly.
        (rewrite_walk_stmts, rewrite_add_phi_arguments): Similarly.
        (rewrite_block): Kill.
        (rewrite_block): Kill.
        (rewrite_into_ssa): Initialize walk_data.  Use walk_dominator_tree.
        (rewrite_into_ssa): Initialize walk_data.  Use walk_dominator_tree.
2003-10-14  Richard Henderson  
2003-10-14  Richard Henderson  
        * gimplify.c (gimplify_expr): Return bool.  Bail gracefully if
        * gimplify.c (gimplify_expr): Return bool.  Bail gracefully if
        fb_mayfail is set.
        fb_mayfail is set.
        (gimplify_asm_expr): Take pointer-to-expr.  Allow gimplify_expr
        (gimplify_asm_expr): Take pointer-to-expr.  Allow gimplify_expr
        to fail for lvalues, and issue appropriate error messages.  Zap
        to fail for lvalues, and issue appropriate error messages.  Zap
        the entire asm statement on failure.
        the entire asm statement on failure.
        * tree-simple.h (enum fallback_t): Add fb_mayfail.
        * tree-simple.h (enum fallback_t): Add fb_mayfail.
2003-10-14  Richard Henderson  
2003-10-14  Richard Henderson  
        * c-tree.h (C_LANG_TREE_NODE_CHAIN_NEXT): New.
        * c-tree.h (C_LANG_TREE_NODE_CHAIN_NEXT): New.
        (union lang_tree_node): Use it for chain_next annotation.
        (union lang_tree_node): Use it for chain_next annotation.
2003-10-14  Richard Henderson  
2003-10-14  Richard Henderson  
        * c-common.c: Include tree-iterator.h.
        * c-common.c: Include tree-iterator.h.
        (c_expand_expr): Kill warn_unused_result checks.
        (c_expand_expr): Kill warn_unused_result checks.
        (c_warn_unused_result): New.
        (c_warn_unused_result): New.
        * c-common.h (STMT_EXPR_WARN_UNUSED_RESULT): Remove.
        * c-common.h (STMT_EXPR_WARN_UNUSED_RESULT): Remove.
        (c_warn_unused_result): Declare.
        (c_warn_unused_result): Declare.
        * c-decl.c (finish_function): Always gimplify.  Call
        * c-decl.c (finish_function): Always gimplify.  Call
        c_warn_unused_result.
        c_warn_unused_result.
        * calls.c (expand_call): Kill warn_unused_result checks.
        * calls.c (expand_call): Kill warn_unused_result checks.
        * Makefile.in (c-common.o): Update.
        * Makefile.in (c-common.o): Update.
2003-10-15  Steven Bosscher  
2003-10-15  Steven Bosscher  
        * cfghooks.c (dump_bb): Take extra `int indent' argument.
        * cfghooks.c (dump_bb): Take extra `int indent' argument.
        * cfg.c (dump_bb): Take extra argument to match cfg hook.
        * cfg.c (dump_bb): Take extra argument to match cfg hook.
        Write out all information about bb that is shared between the tree
        Write out all information about bb that is shared between the tree
        and rtl representations.
        and rtl representations.
        * basic-block.c (dump_bb): Adjust prototype.
        * basic-block.c (dump_bb): Adjust prototype.
        * cfgrtl.c (rtl_dump_bb): Update prototype to match cfg hook.
        * cfgrtl.c (rtl_dump_bb): Update prototype to match cfg hook.
        Use indent.
        Use indent.
        * flow.c (verify_wide_reg, verify_local_live_at_start):
        * flow.c (verify_wide_reg, verify_local_live_at_start):
        Fixup dump_bb calls.
        Fixup dump_bb calls.
        * tree-cfg.c (dump_tree_bb): Rename to tree_dump_bb.  Remove unused
        * tree-cfg.c (dump_tree_bb): Rename to tree_dump_bb.  Remove unused
         `prefix' argument.  Put in tree_cfg_hooks as cfg hook for dump_bb.
         `prefix' argument.  Put in tree_cfg_hooks as cfg hook for dump_bb.
        (remove_bb, debug_tree_bb, dump_tree_cfg): Call dump_bb.
        (remove_bb, debug_tree_bb, dump_tree_cfg): Call dump_bb.
        * tree-ssa (dump_tree_ssa): Likewise.
        * tree-ssa (dump_tree_ssa): Likewise.
        * tree-flow.h (dump_tree_bb): Replace with new tree_dump_bb
        * tree-flow.h (dump_tree_bb): Replace with new tree_dump_bb
        prototype.
        prototype.
        * tree-pretty-print (dump_block_info): Match case of BLOCK, SUCC,
        * tree-pretty-print (dump_block_info): Match case of BLOCK, SUCC,
        PRED with dump_bb.
        PRED with dump_bb.
2003-10-14  Daniel Berlin  
2003-10-14  Daniel Berlin  
        * tree-alias-ander.c (throwaway_global): Delete.
        * tree-alias-ander.c (throwaway_global): Delete.
        (andersen_same_ponts_to_set): We handle all globals individually
        (andersen_same_ponts_to_set): We handle all globals individually
        now.
        now.
        * tree-alias-common.c:  Remove doxygen markers.
        * tree-alias-common.c:  Remove doxygen markers.
        (get_alias_var_decl): Always create an alias var for globals now.
        (get_alias_var_decl): Always create an alias var for globals now.
        Assign the global alias vars to GLOBAL_VAR, too.
        Assign the global alias vars to GLOBAL_VAR, too.
        (intra_function_call): Fix logic, do a bit of pre-filtering to
        (intra_function_call): Fix logic, do a bit of pre-filtering to
        avoid useless global aliasing.
        avoid useless global aliasing.
        (get_values_from_constructor): It's the same for field based and
        (get_values_from_constructor): It's the same for field based and
        not field based.
        not field based.
        (create_alias_vars): Remove special global var handling.
        (create_alias_vars): Remove special global var handling.
        (same_points_to_set): Ditto.
        (same_points_to_set): Ditto.
        (ptr_may_alias_var): Ditto.
        (ptr_may_alias_var): Ditto.
2003-10-14  Jeff Law  
2003-10-14  Jeff Law  
        * tree-ssa-dom.c (cprop_into_phis): Avoid doing useless work if the
        * tree-ssa-dom.c (cprop_into_phis): Avoid doing useless work if the
        edge we care about is abnormal.
        edge we care about is abnormal.
        * tree-ssa-copyprop (cprop_phi): Avoid doing useless work if the
        * tree-ssa-copyprop (cprop_phi): Avoid doing useless work if the
        destination of the PHI node occurs in an abnormal PHI.
        destination of the PHI node occurs in an abnormal PHI.
        * tree-ssa-dom.c (record_equivalences_from_stmt): Renamed from
        * tree-ssa-dom.c (record_equivalences_from_stmt): Renamed from
        record_equivalances.  Caller updated.
        record_equivalances.  Caller updated.
        (record_equivalences_from_phis): New function extracted from
        (record_equivalences_from_phis): New function extracted from
        optimize_block.
        optimize_block.
        (record_equivalences_from_incoming_edge): Likewise.
        (record_equivalences_from_incoming_edge): Likewise.
        (record_equivalances_from_block_entry): Likewise.
        (record_equivalances_from_block_entry): Likewise.
        (cprop_into_phis): Likewise.
        (cprop_into_phis): Likewise.
        (optimize_stmt): Lots of code moved into new functions.  Call
        (optimize_stmt): Lots of code moved into new functions.  Call
        record_equivlances_from_block_entry.
        record_equivlances_from_block_entry.
        * tree-ssa-dom.c (optimize_block): Simplify interface slightly.
        * tree-ssa-dom.c (optimize_block): Simplify interface slightly.
        Use finalize_block.  Extract edge_flags from our block's
        Use finalize_block.  Extract edge_flags from our block's
        incoming edge as necessary.  Simplify recursive call.
        incoming edge as necessary.  Simplify recursive call.
        (thread_through_successor): Extracted from optimize_block.
        (thread_through_successor): Extracted from optimize_block.
        (finalize_block): Similarly.
        (finalize_block): Similarly.
        * tree-ssa-dom.c (eliminate_redundant_computations): New function
        * tree-ssa-dom.c (eliminate_redundant_computations): New function
        extracted from optimize_stmt.
        extracted from optimize_stmt.
        (record_equivalences): Similarly.
        (record_equivalences): Similarly.
        (optimize_stmt): Use eliminate_redundant_computations and
        (optimize_stmt): Use eliminate_redundant_computations and
        record_equivalences.  If fold_stmt changes stmt, then make sure
        record_equivalences.  If fold_stmt changes stmt, then make sure
        to get a new annotation as well.
        to get a new annotation as well.
        * tree-cfg.c (cleanup_control_flow): Pass last statement down to
        * tree-cfg.c (cleanup_control_flow): Pass last statement down to
        cleanup_cond_expr_graph and cleanup_switch_expr_graph.
        cleanup_cond_expr_graph and cleanup_switch_expr_graph.
        (cleanup_cond_expr_graph): Accept statement from caller and
        (cleanup_cond_expr_graph): Accept statement from caller and
        use it.  Return nonzero if the predicate was constant.  No longer
        use it.  Return nonzero if the predicate was constant.  No longer
        static.
        static.
        (cleanup_switch_expr_graph): Similarly.
        (cleanup_switch_expr_graph): Similarly.
        (disconnect_unreachable_case_labels): Similarly, except that it
        (disconnect_unreachable_case_labels): Similarly, except that it
        is still static.
        is still static.
        * tree-flow.h (cleanup_cond_expr_graph): Prototype.
        * tree-flow.h (cleanup_cond_expr_graph): Prototype.
        (cleanup_switch_expr_graph): Similarly.
        (cleanup_switch_expr_graph): Similarly.
        * tree-ssa-dom.c (optimize_stmt): Also optimize the condition
        * tree-ssa-dom.c (optimize_stmt): Also optimize the condition
        in a SWITCH_EXPR.  Use COND_EXPR_COND and SWITCH_COND to get
        in a SWITCH_EXPR.  Use COND_EXPR_COND and SWITCH_COND to get
        conditions instead of relying upon known operand positions.
        conditions instead of relying upon known operand positions.
        Use cleanup_cond_expr_graph and cleanup_switch_expr_graph rather
        Use cleanup_cond_expr_graph and cleanup_switch_expr_graph rather
        than open coding equivalents.
        than open coding equivalents.
        (lookup_avail_expr): Handle SWITCH_EXPRs.  Use COND_EXPR_COND and
        (lookup_avail_expr): Handle SWITCH_EXPRs.  Use COND_EXPR_COND and
        SWITCH_COND to get conditions instead of relying upon known
        SWITCH_COND to get conditions instead of relying upon known
        operand positions.
        operand positions.
        (avail_expr_hash, avail_expr_eq): Similarly.
        (avail_expr_hash, avail_expr_eq): Similarly.
2003-10-14  Richard Henderson  
2003-10-14  Richard Henderson  
        * gimplify.c (gimplify_body): Save and restore input_location;
        * gimplify.c (gimplify_body): Save and restore input_location;
        initialize input_location to DECL_SOURCE_LOCATION.
        initialize input_location to DECL_SOURCE_LOCATION.
        (gimplify_expr): Always save and restore input_location.
        (gimplify_expr): Always save and restore input_location.
2003-10-14  Richard Henderson  
2003-10-14  Richard Henderson  
        * expr.c (expand_expr): Break out EXPR_LOCUS code from ...
        * expr.c (expand_expr): Break out EXPR_LOCUS code from ...
        (expand_expr_1): ... here, renamed from expand_expr.
        (expand_expr_1): ... here, renamed from expand_expr.
2003-10-13  Richard Henderson  
2003-10-13  Richard Henderson  
        * c-simplify.c (c_gimplify_stmt): Upreate on location_t and not
        * c-simplify.c (c_gimplify_stmt): Upreate on location_t and not
        fine and line individually.
        fine and line individually.
        (gimplify_c_loop, gimplify_switch_stmt): Likewise.
        (gimplify_c_loop, gimplify_switch_stmt): Likewise.
        * gimplify.c (wfl_locus): Merge wfl_filename+wfl_lineno.
        * gimplify.c (wfl_locus): Merge wfl_filename+wfl_lineno.
        (annotate_all_with_locus_1): Rename from annotate_stmt_with_file_line.
        (annotate_all_with_locus_1): Rename from annotate_stmt_with_file_line.
        (annotate_all_with_locus): Replace annotate_all_with_file_line;
        (annotate_all_with_locus): Replace annotate_all_with_file_line;
        update all callers.
        update all callers.
        * tree-simple.h: Update.
        * tree-simple.h: Update.
        * tree.c, tree.h (annotate_with_locus): New.
        * tree.c, tree.h (annotate_with_locus): New.
2003-10-13  Steven Bosscher  
2003-10-13  Steven Bosscher  
        * tree-flow-inline.h (def_ops): Take a stmt_ann_t as argument
        * tree-flow-inline.h (def_ops): Take a stmt_ann_t as argument
        instead of a tree.
        instead of a tree.
        (use_ops): Likewise.
        (use_ops): Likewise.
        (vdef_ops): Likewise.
        (vdef_ops): Likewise.
        (vuse_ops): Likewise.
        (vuse_ops): Likewise.
        * tree-flow.h: Update prototypes.
        * tree-flow.h: Update prototypes.
        * tree-cfg.c (remove_stmt): Load the statement annotation.
        * tree-cfg.c (remove_stmt): Load the statement annotation.
        Adjust *_ops calls.
        Adjust *_ops calls.
        * tree-dfa.c (compute_immediate_uses_for_stmt,
        * tree-dfa.c (compute_immediate_uses_for_stmt,
        mark_new_vars_to_rename): Likewise.
        mark_new_vars_to_rename): Likewise.
        * tree-pretty-print.c (dump_vops): Likewise.
        * tree-pretty-print.c (dump_vops): Likewise.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.  Also remove now
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.  Also remove now
        superfluous stmt_ann() calls.
        superfluous stmt_ann() calls.
        (visit_stmt, cpp_fold, add_var_to_ssa_edges_worklist,
        (visit_stmt, cpp_fold, add_var_to_ssa_edges_worklist,
        initialize, replace_uses_in, likely_value): Likewise.
        initialize, replace_uses_in, likely_value): Likewise.
        * tree-ssa-copyprop.c (copyprop_stmt): Likewise.
        * tree-ssa-copyprop.c (copyprop_stmt): Likewise.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
        * tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
        * tree-ssa-dom.c (cprop_into_stmt, optimize_stmt,
        * tree-ssa-dom.c (cprop_into_stmt, optimize_stmt,
        avail_expr_hash, avail_expr_eq):
        avail_expr_hash, avail_expr_eq):
        Likewise.
        Likewise.
        * tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
        * tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
        build_tree_conflict_graph): Likewise.
        build_tree_conflict_graph): Likewise.
        * tree-ssa-pre.c (maybe_find_rhs_use_for_var,
        * tree-ssa-pre.c (maybe_find_rhs_use_for_var,
        expr_phi_insertion, same_e_version_real_occ_real_occ,
        expr_phi_insertion, same_e_version_real_occ_real_occ,
        generate_expr_as_of_bb, bool load_modified_real_occ_real_occ,
        generate_expr_as_of_bb, bool load_modified_real_occ_real_occ,
        bool same_e_version_phi_result, get_default_def,reaching_def,
        bool same_e_version_phi_result, get_default_def,reaching_def,
        tree_perform_ssapre): Likewise.
        tree_perform_ssapre): Likewise.
        * tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmt):
        * tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmt):
        Likewise.
        Likewise.
2003-10-12  Richard Henderson  
2003-10-12  Richard Henderson  
        * gimplify.c (gimplify_array_ref_to_plus): Be prepared for
        * gimplify.c (gimplify_array_ref_to_plus): Be prepared for
        null TYPE_DOMAIN or TYPE_MIN_VALUE for the array.
        null TYPE_DOMAIN or TYPE_MIN_VALUE for the array.
        * tree-ssa-ccp.c (fold_indirect_refs_r): Likewise.
        * tree-ssa-ccp.c (fold_indirect_refs_r): Likewise.
2003-10-12  Richard Henderson  
2003-10-12  Richard Henderson  
        * tree.h (struct tree_common): Rename unused_1 to invariant_flag.
        * tree.h (struct tree_common): Rename unused_1 to invariant_flag.
        (TREE_INVARIANT): New.
        (TREE_INVARIANT): New.
        * builtins.c (build_string_literal): Set TREE_INVARIANT.
        * builtins.c (build_string_literal): Set TREE_INVARIANT.
        * c-common.c (fix_string_type): Likewise.
        * c-common.c (fix_string_type): Likewise.
        * c-typeck.c (build_external_ref): Likewise.
        * c-typeck.c (build_external_ref): Likewise.
        (build_c_cast, pop_init_level): Likewise.
        (build_c_cast, pop_init_level): Likewise.
        * fold-const.c (fold_convert, fold): Likewise.
        * fold-const.c (fold_convert, fold): Likewise.
        * tree.c (make_node, build_constructor): Likewise.
        * tree.c (make_node, build_constructor): Likewise.
        (build, build1): Likewise.
        (build, build1): Likewise.
        (staticp): Pass unknown component references to the language.
        (staticp): Pass unknown component references to the language.
        (save_expr): Check TREE_INVARIANT instead of TREE_CONSTANT.
        (save_expr): Check TREE_INVARIANT instead of TREE_CONSTANT.
        (skip_simple_arithmetic): Likewise.
        (skip_simple_arithmetic): Likewise.
        (stabilize_reference_1): Likewise.
        (stabilize_reference_1): Likewise.
        * print-tree.c (print_node): Print TREE_INVARIANT.
        * print-tree.c (print_node): Print TREE_INVARIANT.
        * c-common.c (pointer_int_sum): Rely on build to set TREE_CONSTANT.
        * c-common.c (pointer_int_sum): Rely on build to set TREE_CONSTANT.
        (finish_label_address_expr): Likewise.
        (finish_label_address_expr): Likewise.
        * c-typeck.c (default_function_array_conversion): Likewise.
        * c-typeck.c (default_function_array_conversion): Likewise.
        (parser_build_binary_op, pointer_diff): Likewise.
        (parser_build_binary_op, pointer_diff): Likewise.
        (build_unary_op, build_binary_op): Likewise.
        (build_unary_op, build_binary_op): Likewise.
        * fold-const.c (non_lvalue): Likewise.
        * fold-const.c (non_lvalue): Likewise.
        * tree-pretty-print.c (dump_generic_node): Handle VIEW_CONVERT_EXPR.
        * tree-pretty-print.c (dump_generic_node): Handle VIEW_CONVERT_EXPR.
2003-10-12  Richard Henderson  
2003-10-12  Richard Henderson  
            Diego Novillo  
            Diego Novillo  
        * gimplify.c (gimplify_array_ref_to_plus): Subtract the array
        * gimplify.c (gimplify_array_ref_to_plus): Subtract the array
        domain minimum index.
        domain minimum index.
        (gimplify_addr_expr): Expand ARRAY_REFs.  Cope with Fortran
        (gimplify_addr_expr): Expand ARRAY_REFs.  Cope with Fortran
        missing cast wierdnesses.
        missing cast wierdnesses.
        * tree-dfa.c (get_expr_operands): Handle (&v + c); abort on
        * tree-dfa.c (get_expr_operands): Handle (&v + c); abort on
        other address invariants that should have been folded.
        other address invariants that should have been folded.
        (vdefs_disappeared_p): New.
        (vdefs_disappeared_p): New.
        (mark_new_vars_to_rename): Use it.  Move from ...
        (mark_new_vars_to_rename): Use it.  Move from ...
        * tree-ssa-dom.c: ... here.
        * tree-ssa-dom.c: ... here.
        * tree-flow-inline.h (is_unchanging_value): Remove; use
        * tree-flow-inline.h (is_unchanging_value): Remove; use
        is_gimple_min_invariant everywhere instead.
        is_gimple_min_invariant everywhere instead.
        (phi_ssa_name_p): New.
        (phi_ssa_name_p): New.
        * tree-must-alias.c (find_addressable_vars): Process PHIs.
        * tree-must-alias.c (find_addressable_vars): Process PHIs.
        * tree-simple.c (is_gimple_min_invariant): Rename from
        * tree-simple.c (is_gimple_min_invariant): Rename from
        is_gimple_const; allow non-static variable addresses; update callers.
        is_gimple_const; allow non-static variable addresses; update callers.
        (is_gimple_val): Remove ADDR_EXPR checks.
        (is_gimple_val): Remove ADDR_EXPR checks.
        * tree-simple.h: Update.
        * tree-simple.h: Update.
        * tree-ssa-ccp.c (replace_uses_in): Add replaced_address argument.
        * tree-ssa-ccp.c (replace_uses_in): Add replaced_address argument.
        (substitute_and_fold): Use that to mark_new_vars_to_rename.
        (substitute_and_fold): Use that to mark_new_vars_to_rename.
        (fold_indirect_refs_r): New.
        (fold_indirect_refs_r): New.
        (fold_stmt): Use it.
        (fold_stmt): Use it.
        * tree-ssa-copyprop.c (copyprop_stmt): Call fold_stmt.
        * tree-ssa-copyprop.c (copyprop_stmt): Call fold_stmt.
        * tree-ssa-dce.c (NECESSARY): Use asm_written_flag.
        * tree-ssa-dce.c (NECESSARY): Use asm_written_flag.
        (mark_necessary): Reject DECLs.
        (mark_necessary): Reject DECLs.
        * tree-ssa-live.c (register_ssa_partition): Use phi_ssa_name_p.
        * tree-ssa-live.c (register_ssa_partition): Use phi_ssa_name_p.
        * tree-ssa-pre.c (generate_expr_as_of_bb): Call fold_stmt if we
        * tree-ssa-pre.c (generate_expr_as_of_bb): Call fold_stmt if we
        replaced with constants.
        replaced with constants.
        * tree-ssa.c (insert_copy_on_edge): Unwrap ADDR_EXPRs to set_is_used.
        * tree-ssa.c (insert_copy_on_edge): Unwrap ADDR_EXPRs to set_is_used.
        (eliminate_build, coalesce_abnormal_edges, coalesce_vars): Use
        (eliminate_build, coalesce_abnormal_edges, coalesce_vars): Use
        phi_ssa_name_p.
        phi_ssa_name_p.
2003-10-09  Frank Ch. Eigler  
2003-10-09  Frank Ch. Eigler  
        java/12211
        java/12211
        * gimplify.c (gimplify_save_expr): Tolerate void-typed saved
        * gimplify.c (gimplify_save_expr): Tolerate void-typed saved
        expressions.
        expressions.
2003-10-09  Diego Novillo  
2003-10-09  Diego Novillo  
        * tree-dfa.c (add_call_clobber_ops): If a variable is read-only,
        * tree-dfa.c (add_call_clobber_ops): If a variable is read-only,
        add a VUSE operand instead of VDEF.
        add a VUSE operand instead of VDEF.
2003-10-08  Jason Merrill  
2003-10-08  Jason Merrill  
        PR optimization/12525
        PR optimization/12525
        * tree-dfa.c (note_addressable): New fn, split out from...
        * tree-dfa.c (note_addressable): New fn, split out from...
        (add_stmt_operands): Here.
        (add_stmt_operands): Here.
        (get_stmt_operands) : Call it for mem ops.
        (get_stmt_operands) : Call it for mem ops.
        * gimplify.c (gimplify_asm_expr): Call parse_input_constraint
        * gimplify.c (gimplify_asm_expr): Call parse_input_constraint
        directly.  It's only a mem op if allows_mem is set.
        directly.  It's only a mem op if allows_mem is set.
2003-10-08  Diego Novillo  
2003-10-08  Diego Novillo  
        PR/12187
        PR/12187
        * tree-dfa.c (add_stmt_operand): Test against current_function_decl
        * tree-dfa.c (add_stmt_operand): Test against current_function_decl
        when checking for global variables.
        when checking for global variables.
        (may_access_global_mem_p): Likewise.
        (may_access_global_mem_p): Likewise.
        (add_referenced_var): Likewise.
        (add_referenced_var): Likewise.
        Consider DECL_NONLOCAL variables call clobbered and used.
        Consider DECL_NONLOCAL variables call clobbered and used.
        (find_hidden_use_vars): Do not test for DECL_NONLOCAL variables.
        (find_hidden_use_vars): Do not test for DECL_NONLOCAL variables.
        * tree-optimize.c (tree_rest_of_compilation): Test against
        * tree-optimize.c (tree_rest_of_compilation): Test against
        current_function_decl when checking for global variables.
        current_function_decl when checking for global variables.
        * tree-ssa-ccp.c (get_default_value): Likewise.
        * tree-ssa-ccp.c (get_default_value): Likewise.
        * tree-ssa-dce.c (need_to_preserve_store): Likewise.
        * tree-ssa-dce.c (need_to_preserve_store): Likewise.
2003-10-07  Jason Merrill  
2003-10-07  Jason Merrill  
        PR optimization/12525
        PR optimization/12525
        * gimplify.c (gimplify_asm_expr): If the constraint doesn't allow
        * gimplify.c (gimplify_asm_expr): If the constraint doesn't allow
        a register, call mark_addressable.  Split an in/out operand that
        a register, call mark_addressable.  Split an in/out operand that
        does allow a register into separate input and output operands.
        does allow a register into separate input and output operands.
2003-10-06  Richard Henderson  
2003-10-06  Richard Henderson  
        * fold-const.c (fold): Fold (T1)((T2)X op Y) into (T1)X op Y,
        * fold-const.c (fold): Fold (T1)((T2)X op Y) into (T1)X op Y,
        for suitable values of T1 & T2.
        for suitable values of T1 & T2.
2003-10-06  Andrew Macleod  
2003-10-06  Andrew Macleod  
        * tree-dfa.c (compute_immediate_uses): Add optional callback.
        * tree-dfa.c (compute_immediate_uses): Add optional callback.
        (compute_immediate_uses_for_phi): Remove unused parameter. Add optional
        (compute_immediate_uses_for_phi): Remove unused parameter. Add optional
        callback to determine if usage info should be calculated for variable.
        callback to determine if usage info should be calculated for variable.
        (compute_immediate_uses_for_stmt): Add optional callback to determine
        (compute_immediate_uses_for_stmt): Add optional callback to determine
        if usage info should be calculated for variable.
        if usage info should be calculated for variable.
        * tree-flow.h (compute_immediate_uses): Update prototype.
        * tree-flow.h (compute_immediate_uses): Update prototype.
        * tree-ssa-ccp.c (need_imm_uses_for): New. Callback function passed to
        * tree-ssa-ccp.c (need_imm_uses_for): New. Callback function passed to
        compute_immediate_uses.
        compute_immediate_uses.
        (initialize): Calculate defaults initially, then build reduced
        (initialize): Calculate defaults initially, then build reduced
        immediate use information.
        immediate use information.
        (get_default_value): Non empty stmt's which are not a PHI_NODE or
        (get_default_value): Non empty stmt's which are not a PHI_NODE or
        a MODIFY_EXPR default to VARYING.
        a MODIFY_EXPR default to VARYING.
2003-10-06  Andrew Macleod  
2003-10-06  Andrew Macleod  
        * tree-cfg.c (tree_split_edge): Mark edge as FALLTHRU when splitting.
        * tree-cfg.c (tree_split_edge): Mark edge as FALLTHRU when splitting.
2003-10-03  Zdenek Dvorak  
2003-10-03  Zdenek Dvorak  
        * tree-ssa.c (rewrite_block): Test vars_to_rename instead of
        * tree-ssa.c (rewrite_block): Test vars_to_rename instead of
        PHI_ARG_CAPACITY.
        PHI_ARG_CAPACITY.
        * tree-dfa.c (remove_phi_arg_num): Don't update
        * tree-dfa.c (remove_phi_arg_num): Don't update
        PHI_ARG_CAPACITY.
        PHI_ARG_CAPACITY.
2003-10-01  Richard Henderson  
2003-10-01  Richard Henderson  
        * c-decl.c (set_decl_nonlocal): New.
        * c-decl.c (set_decl_nonlocal): New.
        (store_parm_decls): Use it via walk_tree.
        (store_parm_decls): Use it via walk_tree.
2003-10-01  Jeff Law  
2003-10-01  Jeff Law  
        * tree-ssa-dom.c (cprop_into_stmt): New function extracted from
        * tree-ssa-dom.c (cprop_into_stmt): New function extracted from
        optimize_stmt.
        optimize_stmt.
        (optimize_stmt): Use cprop_into_stmt.
        (optimize_stmt): Use cprop_into_stmt.
2003-09-30  Richard Henderson  
2003-09-30  Richard Henderson  
        * function.h (struct function): Add function_end_locus.
        * function.h (struct function): Add function_end_locus.
        * c-decl.c (finish_function): Set it.
        * c-decl.c (finish_function): Set it.
        * tree-optimize.c (tree_rest_of_compilation): Set input_location
        * tree-optimize.c (tree_rest_of_compilation): Set input_location
        to function_end_locus before expand_function_end.
        to function_end_locus before expand_function_end.
        * tree-optimize.c (optimize_function_tree): Move calls to
        * tree-optimize.c (optimize_function_tree): Move calls to
        remove_useless_stmts_and_vars and lower_eh_constructs ...
        remove_useless_stmts_and_vars and lower_eh_constructs ...
        (tree_rest_of_compilation): ... here.
        (tree_rest_of_compilation): ... here.
        * c-simplify.c (gimplify_expr_stmt): Don't warn for any statement
        * c-simplify.c (gimplify_expr_stmt): Don't warn for any statement
        with void result type.
        with void result type.
2003-09-30  Jeff Law  
2003-09-30  Jeff Law  
        * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Fix thinko
        * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Fix thinko
        in test for swapping ranges.
        in test for swapping ranges.
        * tree-ssa-dom.c (record_range): New function.
        * tree-ssa-dom.c (record_range): New function.
        (extract_range_from_cond): Likewise.
        (extract_range_from_cond): Likewise.
        (tree_ssa_dominator_optimize): Initialize the vrp_data varray.
        (tree_ssa_dominator_optimize): Initialize the vrp_data varray.
        (optimize_block): Initialize the vrp_variables varray.  Wipe
        (optimize_block): Initialize the vrp_variables varray.  Wipe
        appropriate entries from the VRP varrays when done processing a block.
        appropriate entries from the VRP varrays when done processing a block.
        (get_eq_expr_value): Accept new argument "bb".  Call record_range
        (get_eq_expr_value): Accept new argument "bb".  Call record_range
        appropriately.  Refactor code to avoid useless work.
        appropriately.  Refactor code to avoid useless work.
        (simplify_cond_and_lookup_avail_expr): Use value range records to
        (simplify_cond_and_lookup_avail_expr): Use value range records to
        simplify conditions.
        simplify conditions.
        (simplify_rhs_and_lookup_avail_expr): When simplifying ABS_EXPR,
        (simplify_rhs_and_lookup_avail_expr): When simplifying ABS_EXPR,
        DIV_EXPR and MOD_EXPR, use simplify_cond_and_lookup_avail_expr
        DIV_EXPR and MOD_EXPR, use simplify_cond_and_lookup_avail_expr
        to determine the range of the given variable.
        to determine the range of the given variable.
        * tree-ssa-dom.c (find_equivalent_equality_comparison): Do not
        * tree-ssa-dom.c (find_equivalent_equality_comparison): Do not
        look through a typecast which narrows a value.
        look through a typecast which narrows a value.
2003-09-30  Paul Brook  
2003-09-30  Paul Brook  
        * Makefile.in: Add rules for check-gfortran.
        * Makefile.in: Add rules for check-gfortran.
2003-09-29  Richard Henderson  
2003-09-29  Richard Henderson  
        * gimplify.c (gimplify_cond_expr): Fix both arms dead return value.
        * gimplify.c (gimplify_cond_expr): Fix both arms dead return value.
2003-09-29  Jeff Law  
2003-09-29  Jeff Law  
        * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): New function.
        * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): New function.
        (find_equivalent_equality_comparison): Likewise.
        (find_equivalent_equality_comparison): Likewise.
        (optimize_block): Remove code to build a == c equivalence after
        (optimize_block): Remove code to build a == c equivalence after
        seeing a == b and b == c.  Remove code to walk backwards
        seeing a == b and b == c.  Remove code to walk backwards
        though typecasts to record equivalences and move relevant parts
        though typecasts to record equivalences and move relevant parts
        into find_equivalent_equality_comparison.
        into find_equivalent_equality_comparison.
        (optimize_stmt): Call simplify_cond_and_lookup_avail_expr.
        (optimize_stmt): Call simplify_cond_and_lookup_avail_expr.
2003-09-28  Richard Henderson  
2003-09-28  Richard Henderson  
        * gimplify.c (gimplify_call_expr): Annotate all call_exprs.
        * gimplify.c (gimplify_call_expr): Annotate all call_exprs.
        * tree-inline.c (expand_call_inline): Set input_location based
        * tree-inline.c (expand_call_inline): Set input_location based
        on EXPR_LOCUS; save and restore input_location around that.
        on EXPR_LOCUS; save and restore input_location around that.
        (walk_tree): Do not set input_location.
        (walk_tree): Do not set input_location.
2003-09-27  Graham Stott  
2003-09-27  Graham Stott  
        * expr.c (expand_expr)[CATCH_EXPR]: Fix bogus return value.
        * expr.c (expand_expr)[CATCH_EXPR]: Fix bogus return value.
2003-09-26  Andrew MacLeod  
2003-09-26  Andrew MacLeod  
        * tree-ssa-dom.c (struct var_value_d): Remove.
        * tree-ssa-dom.c (struct var_value_d): Remove.
        (const_and_copies): Change to a varray_type.
        (const_and_copies): Change to a varray_type.
        (tree_ssa_dominator_optimize): Initialize const_and_copies as a varray.
        (tree_ssa_dominator_optimize): Initialize const_and_copies as a varray.
        (optimize_block): Simply set the value in const_and_copies.
        (optimize_block): Simply set the value in const_and_copies.
        (dump_dominator_optimization_stats): No hash stats for const_and_copies.
        (dump_dominator_optimization_stats): No hash stats for const_and_copies.
        (record_cond_is_true, record_cond_is_false,
        (record_cond_is_true, record_cond_is_false,
        simplify_rhs_and_lookup_avail_expr, update_rhs_and_lookup_avail_expr):
        simplify_rhs_and_lookup_avail_expr, update_rhs_and_lookup_avail_expr):
        Parameter const_and_copies is now a varray_type.
        Parameter const_and_copies is now a varray_type.
        (var_value_hash, var_value_eq): Remove.
        (var_value_hash, var_value_eq): Remove.
        (get_value_for, set_value_for): Access varray elements.
        (get_value_for, set_value_for): Access varray elements.
        (get_eq_expr_value): Parameter const_and_copies is now a varray_type.
        (get_eq_expr_value): Parameter const_and_copies is now a varray_type.
        * tree-cfg.c (handle_switch_split): Update container of previous stmt.
        * tree-cfg.c (handle_switch_split): Update container of previous stmt.
2003-09-25  Daniel Berlin  
2003-09-25  Daniel Berlin  
        * tree-ssa-pre.c (split_critical_edges): New function, temporarily
        * tree-ssa-pre.c (split_critical_edges): New function, temporarily
        disabled until some edge splitting/insertion problems are fixed.
        disabled until some edge splitting/insertion problems are fixed.
        (opnum_of_ephi): Take an edge argument, constify. Use hash table lookup.
        (opnum_of_ephi): Take an edge argument, constify. Use hash table lookup.
        Update all callers.
        Update all callers.
        (ephi_pindex_eq): New function.
        (ephi_pindex_eq): New function.
        (ephi_pindex_hash): New function.
        (ephi_pindex_hash): New function.
        (ephi_pindex_htab): New variable.
        (ephi_pindex_htab): New variable.
        (add_ephi_pred): Update hash table.
        (add_ephi_pred): Update hash table.
        (expr_phi_insertion): Don't free the bitmap returned by compute_idfs
        (expr_phi_insertion): Don't free the bitmap returned by compute_idfs
        anymore.
        anymore.
        (idfs_cache): New variable.
        (idfs_cache): New variable.
        (compute_idfs): Rewrite to use cache as much as possible, and not
        (compute_idfs): Rewrite to use cache as much as possible, and not
        recompute when we can avoid it.
        recompute when we can avoid it.
2003-09-25  Daniel Berlin  
2003-09-25  Daniel Berlin  
        * tree-alias-ander.c:  Fixup comment spacing.
        * tree-alias-ander.c:  Fixup comment spacing.
        (andersen_op_assign):  Handle >2 operands case.
        (andersen_op_assign):  Handle >2 operands case.
2003-09-24  Steven Bosscher  
2003-09-24  Steven Bosscher  
        * tree-dfa.c (compute_immediate_uses_for): Split up in two
        * tree-dfa.c (compute_immediate_uses_for): Split up in two
        separate functions, one for PHIs and one for normal statements.
        separate functions, one for PHIs and one for normal statements.
        (compute_immediate_uses_for_phi): New.
        (compute_immediate_uses_for_phi): New.
        (compute_immediate_uses_for_stmt): New.
        (compute_immediate_uses_for_stmt): New.
2003-09-25  Jeff Law  
2003-09-25  Jeff Law  
        * tree-ssa-dom.c (optimize_block): When EQ_EXPR_VALUE has the
        * tree-ssa-dom.c (optimize_block): When EQ_EXPR_VALUE has the
        form DEST = SRC where both DEST and SRC are SSA_NAMEs also
        form DEST = SRC where both DEST and SRC are SSA_NAMEs also
        record SRC = DEST into the const and copies table.
        record SRC = DEST into the const and copies table.
        * tree-ssa-dom.c (optimize_block): Change tests which checked
        * tree-ssa-dom.c (optimize_block): Change tests which checked
        for SSA_VAR_P to only allow SSA_NAMEs.
        for SSA_VAR_P to only allow SSA_NAMEs.
        (get_value_for, set_value_for): Likewise.
        (get_value_for, set_value_for): Likewise.
        (lookup_avail_expr, get_eq_expr_value): Likewise.
        (lookup_avail_expr, get_eq_expr_value): Likewise.
2003-09-25  Andrew MacLeod  
2003-09-25  Andrew MacLeod  
        * tree-ssa-dce.c (pdom_info, needed_stmts): Remove.
        * tree-ssa-dce.c (pdom_info, needed_stmts): Remove.
        (NECESSARY): Define.
        (NECESSARY): Define.
        (necessary_p): Check bit instead of hash table lookup.
        (necessary_p): Check bit instead of hash table lookup.
        (clear_necessary): New. Clear necessary bit.
        (clear_necessary): New. Clear necessary bit.
        (mark_necessary): Use bit instead of hash table. No control lookup.
        (mark_necessary): Use bit instead of hash table. No control lookup.
        (mark_tree_necessary): Remove.
        (mark_tree_necessary): Remove.
        (find_useful_stmts): Clear necessary bit before checking it.
        (find_useful_stmts): Clear necessary bit before checking it.
        (stmt_useful_p): Remove GOTO_EXPR case. Check arms of COND_EXPR for
        (stmt_useful_p): Remove GOTO_EXPR case. Check arms of COND_EXPR for
        GOTO. All other control flow stmts are necessary.
        GOTO. All other control flow stmts are necessary.
        (process_worklist): Dont look for control parents.
        (process_worklist): Dont look for control parents.
        (remove_dead_stmts): No dominattor info is necessary.
        (remove_dead_stmts): No dominattor info is necessary.
        (remove_dead_stmt): Don't need BB any more. Remove COND_EXPR by changing
        (remove_dead_stmt): Don't need BB any more. Remove COND_EXPR by changing
        the condition to 'if (0)'. Abort on other control flow.
        the condition to 'if (0)'. Abort on other control flow.
        (tree_ssa_dce): No longer need the hash table.
        (tree_ssa_dce): No longer need the hash table.
        (remove_conditional): Remove.
        (remove_conditional): Remove.
2003-09-25  Andreas Schwab  
2003-09-25  Andreas Schwab  
        * tree-flow.h: Declare next_ssa_version.
        * tree-flow.h: Declare next_ssa_version.
        * tree-ssa-ccp.c: Remove conflicting declaration.
        * tree-ssa-ccp.c: Remove conflicting declaration.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree.c (make_ssa_name): Likewise.
        * tree.c (make_ssa_name): Likewise.
2003-09-24  Jason Merrill  
2003-09-24  Jason Merrill  
        * tree.h (DECL_SOURCE_LOCATION): Resurrect.
        * tree.h (DECL_SOURCE_LOCATION): Resurrect.
        (DECL_SOURCE_FILE, DECL_SOURCE_LINE): Likewise.
        (DECL_SOURCE_FILE, DECL_SOURCE_LINE): Likewise.
        (EXPR_LOCUS): Renamed from TREE_LOCUS.  Null for non-exprs.
        (EXPR_LOCUS): Renamed from TREE_LOCUS.  Null for non-exprs.
        (SET_EXPR_LOCUS): New macro.
        (SET_EXPR_LOCUS): New macro.
        (EXPR_FILENAME): Renamed from TREE_FILENAME.
        (EXPR_FILENAME): Renamed from TREE_FILENAME.
        (EXPR_LINENO): Renamed from TREE_LINENO.
        (EXPR_LINENO): Renamed from TREE_LINENO.
        (struct tree_common): Remove locus field.
        (struct tree_common): Remove locus field.
        (struct tree_decl): Re-add locus field.
        (struct tree_decl): Re-add locus field.
        (struct tree_expr): Add locus field.
        (struct tree_expr): Add locus field.
        * c-aux-info.c, c-decl.c, coverage.c, c-parse.in, dbxout.c,
        * c-aux-info.c, c-decl.c, coverage.c, c-parse.in, dbxout.c,
        diagnostic.c, dwarf2out.c, expr.c, function.c, gimplify.c,
        diagnostic.c, dwarf2out.c, expr.c, function.c, gimplify.c,
        integrate.c, print-tree.c, stmt.c, tree.c, tree-cfg.c,
        integrate.c, print-tree.c, stmt.c, tree.c, tree-cfg.c,
        tree-dump.c, tree-flow-inline.h, config/alpha/alpha.c,
        tree-dump.c, tree-flow-inline.h, config/alpha/alpha.c,
        config/mips/mips.c: Adjust.
        config/mips/mips.c: Adjust.
2003-09-24  Andrew MacLeod  
2003-09-24  Andrew MacLeod  
        * tree-ssa-ccp.c (enum latticevalue): Add UNINITIALIZED.
        * tree-ssa-ccp.c (enum latticevalue): Add UNINITIALIZED.
        (const_values, struct value_map_d): Remove hash table structures.
        (const_values, struct value_map_d): Remove hash table structures.
        (value_vector): New array of values.
        (value_vector): New array of values.
        (get_value): Use value_vector instead of hash table. Mark inline.
        (get_value): Use value_vector instead of hash table. Mark inline.
        (visit_phi_node): Ignore arguments if the PHI result is already VARYING.
        (visit_phi_node): Ignore arguments if the PHI result is already VARYING.
        (initialize): Initialize value vector instead of hash table.
        (initialize): Initialize value vector instead of hash table.
        (finalize): Free value vector instead of hash table.
        (finalize): Free value vector instead of hash table.
        (add_var_to_ssa_edges_worklist): Don't add to worklist if
        (add_var_to_ssa_edges_worklist): Don't add to worklist if
        DONT_SIMULATE_AGAIN flag is set.
        DONT_SIMULATE_AGAIN flag is set.
        (value_map_hash, value_map_eq): Delete.
        (value_map_hash, value_map_eq): Delete.
2003-09-24  Jeff Law  
2003-09-24  Jeff Law  
        * tree-ssa-dom.c (optimize_block): Create infrastructure for
        * tree-ssa-dom.c (optimize_block): Create infrastructure for
        tracking const_and_copies equivalences which disappear when
        tracking const_and_copies equivalences which disappear when
        we leave the current block.  Use it for equivalences created
        we leave the current block.  Use it for equivalences created
        by EQ_EXPR_VALUE.  Follow use-def chains for EQ_EXPR_VALUE
        by EQ_EXPR_VALUE.  Follow use-def chains for EQ_EXPR_VALUE
        equivalences and see if certain NOP_EXPRs can be ignored
        equivalences and see if certain NOP_EXPRs can be ignored
        to create a block-local equivalence for const_and_copies.
        to create a block-local equivalence for const_and_copies.
        (optimize_stmt): Do not get confused by a cast of the return
        (optimize_stmt): Do not get confused by a cast of the return
        value from alloca or the address of a non-weak decl.
        value from alloca or the address of a non-weak decl.
        * fold-const.c (fold_read_from_constant_string): New function.
        * fold-const.c (fold_read_from_constant_string): New function.
        * tree.h (fold_read_from_constant_string): Prototype.
        * tree.h (fold_read_from_constant_string): Prototype.
        * expr.c (expand_expr, case INDIRECT_REF):  Use it.
        * expr.c (expand_expr, case INDIRECT_REF):  Use it.
        (expand_expr, case ARRAY_REF): Likewise.  Put checking code
        (expand_expr, case ARRAY_REF): Likewise.  Put checking code
        inside an ENABLE_CHECKING.
        inside an ENABLE_CHECKING.
        * tree-ssa-ccp.c (fold_stmt): Use fold_read_from_constant_string.
        * tree-ssa-ccp.c (fold_stmt): Use fold_read_from_constant_string.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.
2003-09-23  Jeff Law  
2003-09-23  Jeff Law  
        * tree-ssa-dom.c (optimize_block): Ignore "useless" type
        * tree-ssa-dom.c (optimize_block): Ignore "useless" type
        conversions in SWITCH_COND when creating equivalenecs at
        conversions in SWITCH_COND when creating equivalenecs at
        case labels.
        case labels.
2003-09-22  Jeff Law  
2003-09-22  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Addresses of non-weak symbols
        * tree-ssa-dom.c (optimize_stmt): Addresses of non-weak symbols
        as well as dynamically allocated stack space are always nonzero.
        as well as dynamically allocated stack space are always nonzero.
        * tree-cfg.c (handle_switch_split): Properly mark the fallthru
        * tree-cfg.c (handle_switch_split): Properly mark the fallthru
        edge from SRC to DEST with EDGE_FALLTHRU.
        edge from SRC to DEST with EDGE_FALLTHRU.
2003-09-22  Daniel Berlin  
2003-09-22  Daniel Berlin  
        * tree-flow.h (struct bb_ann_d): Add erefs array.
        * tree-flow.h (struct bb_ann_d): Add erefs array.
        * tree-ssa-pre.c (handle_bb_creation): Remove ei parameter.
        * tree-ssa-pre.c (handle_bb_creation): Remove ei parameter.
        Update caller.
        Update caller.
        (struct expr_info): Remove erefs array.
        (struct expr_info): Remove erefs array.
        (append_eref_to_block): New function.
        (append_eref_to_block): New function.
        (clear_all_eref_arrays): Ditto.
        (clear_all_eref_arrays): Ditto.
        (expr_phi_insertion): Use append_eref_to_block.
        (expr_phi_insertion): Use append_eref_to_block.
        (insert_occ_in_preorder_dt_order_1): Ditto.
        (insert_occ_in_preorder_dt_order_1): Ditto.
        (subst_phis): Only copy expression, not the containing EUSE/EPHI.
        (subst_phis): Only copy expression, not the containing EUSE/EPHI.
        Update all callers to reflect this.
        Update all callers to reflect this.
        (compute_will_be_avail): Update for per-block eref array.
        (compute_will_be_avail): Update for per-block eref array.
        (handle_bb_creation): Ditto.
        (handle_bb_creation): Ditto.
        (pre_expression): Ditto.
        (pre_expression): Ditto.
        (tree_perform_ssapre): Clear eref arrays when done with expression.
        (tree_perform_ssapre): Clear eref arrays when done with expression.
2003-09-22  Diego Novillo  
2003-09-22  Diego Novillo  
        * tree-cfg.c (dump_tree_bb): Remove superlfuous newlines.
        * tree-cfg.c (dump_tree_bb): Remove superlfuous newlines.
2003-09-21  Diego Novillo  
2003-09-21  Diego Novillo  
        * tree-dfa.c (compute_alias_sets): Use TDI_alias instead of
        * tree-dfa.c (compute_alias_sets): Use TDI_alias instead of
        TDI_ssa.
        TDI_ssa.
        * tree-dump.c (dump_files): Add enties for TDI_alias, TDI_ssa1,
        * tree-dump.c (dump_files): Add enties for TDI_alias, TDI_ssa1,
        TDI_dom1, TDI_ssa2, TDI_dce1, TDI_ssa3, TDI_dom2, TDI_ssa4,
        TDI_dom1, TDI_ssa2, TDI_dce1, TDI_ssa3, TDI_dom2, TDI_ssa4,
        TDI_ssa5 and TDI_dce2.
        TDI_ssa5 and TDI_dce2.
        Remove entries for TDI_ssa, TDI_dom and TDI_dce.
        Remove entries for TDI_ssa, TDI_dom and TDI_dce.
        * tree.h (enum tree_dump_index): Similarly.
        * tree.h (enum tree_dump_index): Similarly.
        (TDF_ALIAS): Remove.
        (TDF_ALIAS): Remove.
        (TDF_VOPS): Change value.
        (TDF_VOPS): Change value.
        * doc/invoke.texi (-fdump-tree-alias): Document.
        * doc/invoke.texi (-fdump-tree-alias): Document.
        * tree-flow.h (tree_warn_uninitialized): Remove unused variable.
        * tree-flow.h (tree_warn_uninitialized): Remove unused variable.
        (rewrite_into_ssa): Add enum tree_dump_index argument.  Update all
        (rewrite_into_ssa): Add enum tree_dump_index argument.  Update all
        callers.
        callers.
        (rewrite_out_of_ssa): Likewise.
        (rewrite_out_of_ssa): Likewise.
        (tree_perform_ssa_pre): Likewise.
        (tree_perform_ssa_pre): Likewise.
        (tree_ssa_dominator_optimize): Likewise.
        (tree_ssa_dominator_optimize): Likewise.
        (tree_ssa_dce): Likewise.
        (tree_ssa_dce): Likewise.
        (tree_ssa_copyprop): Likewise.
        (tree_ssa_copyprop): Likewise.
        (tree_ssa_ccp): Likewise.
        (tree_ssa_ccp): Likewise.
        Add sbitmap argument.
        Add sbitmap argument.
        (tree_compute_must_alias): Likewise.
        (tree_compute_must_alias): Likewise.
        (mark_new_vars_to_rename): Declare.
        (mark_new_vars_to_rename): Declare.
        * tree-must-alias.c (tree_compute_must_alias): Do not call
        * tree-must-alias.c (tree_compute_must_alias): Do not call
        rewrite_into_ssa.
        rewrite_into_ssa.
        Remove local vars_to_rename.  Use new argument instead.
        Remove local vars_to_rename.  Use new argument instead.
        * tree-optimize.c (optimize_function_tree): Re-write optimization
        * tree-optimize.c (optimize_function_tree): Re-write optimization
        ordering to support passes that need the SSA form updated.
        ordering to support passes that need the SSA form updated.
        Call tree_ssa_dominator_optimize.
        Call tree_ssa_dominator_optimize.
        Re-arrange optimization ordering.
        Re-arrange optimization ordering.
        * tree-ssa-ccp.c (substitute_and_fold): Take new argument
        * tree-ssa-ccp.c (substitute_and_fold): Take new argument
        vars_to_rename.
        vars_to_rename.
        Call mark_new_vars_to_rename.
        Call mark_new_vars_to_rename.
        (visit_phi_node): Move variable 'val' into the right scope.
        (visit_phi_node): Move variable 'val' into the right scope.
        (initialize): Move call dump_begin ...
        (initialize): Move call dump_begin ...
        (tree_ssa_ccp): ... here.
        (tree_ssa_ccp): ... here.
        * tree-ssa-dom.c (mark_new_vars_to_rename): Declare extern.
        * tree-ssa-dom.c (mark_new_vars_to_rename): Declare extern.
        Make sure that variables in virtual operands aren't marked
        Make sure that variables in virtual operands aren't marked
        unnecessarily.
        unnecessarily.
        * tree-ssa.c (rewrite_into_ssa): Do not call
        * tree-ssa.c (rewrite_into_ssa): Do not call
        tree_ssa_dominator_optimize.
        tree_ssa_dominator_optimize.
2003-09-21  Diego Novillo  
2003-09-21  Diego Novillo  
        * tree-ssa-dce.c (dom_info): Remove unused variable.
        * tree-ssa-dce.c (dom_info): Remove unused variable.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If the CFG has been
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If the CFG has been
        altered, call cleanup_tree_cfg.
        altered, call cleanup_tree_cfg.
        Call cleanup_tree_cfg before returning.
        Call cleanup_tree_cfg before returning.
        * tree-ssa-pre.c (tree_perform_ssapre): Call get_stmt_operands
        * tree-ssa-pre.c (tree_perform_ssapre): Call get_stmt_operands
        before processing the statement.
        before processing the statement.
        * tree-ssa-dom.c (thread_edge): Remove attribute EDGE_FALLTHRU from
        * tree-ssa-dom.c (thread_edge): Remove attribute EDGE_FALLTHRU from
        edge.
        edge.
2003-09-21  Jeff Law  
2003-09-21  Jeff Law  
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Break out of
        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Break out of
        optimize_stmt.  Follow the def-use chains back for certain expressions
        optimize_stmt.  Follow the def-use chains back for certain expressions
        to see if we can simplify the RHS of the current expression based
        to see if we can simplify the RHS of the current expression based
        on earlier expressions.
        on earlier expressions.
        * tree-ssa-dom.c (optimize_block): Rework code to propagate values
        * tree-ssa-dom.c (optimize_block): Rework code to propagate values
        into PHI nodes to be more efficient.
        into PHI nodes to be more efficient.
2003-09-20  Andrew MacLeod  
2003-09-20  Andrew MacLeod  
        * tree-flow.h (struct dataflow_d): Remove reaching fields, add 2 element
        * tree-flow.h (struct dataflow_d): Remove reaching fields, add 2 element
        vector of trees.
        vector of trees.
        * tree-flow-inline.h (immediate_uses): Rename to get_immediate_uses,
        * tree-flow-inline.h (immediate_uses): Rename to get_immediate_uses,
        return a dataflow object.
        return a dataflow object.
        (reaching_defs): Remove until needed.
        (reaching_defs): Remove until needed.
        (num_immediate_uses): New. Return number of immediate uses.
        (num_immediate_uses): New. Return number of immediate uses.
        (immediate_use): New. Return a specified immediate use.
        (immediate_use): New. Return a specified immediate use.
        * tree-dfa.c (add_immediate_use): Use new fields.
        * tree-dfa.c (add_immediate_use): Use new fields.
        (dump_immediate_uses_for): Use new interface.
        (dump_immediate_uses_for): Use new interface.
        (create_phi_node): Chain to start of list.
        (create_phi_node): Chain to start of list.
        * tree-ssa-ccp.c (add_var_to_ssa_edges_worklist): Use new interface.
        * tree-ssa-ccp.c (add_var_to_ssa_edges_worklist): Use new interface.
        * tree-ssa.c (compute_global_livein): Loop interchange.
        * tree-ssa.c (compute_global_livein): Loop interchange.
2003-09-18  Jeff Law  
2003-09-18  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of a
        * tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of a
        MODIFY_EXPR even if we can't record any equivalences created by
        MODIFY_EXPR even if we can't record any equivalences created by
        the MODIFY_EXPR.  Move code to simplify ABS_EXPR, TRUNC_DIV_EXPR
        the MODIFY_EXPR.  Move code to simplify ABS_EXPR, TRUNC_DIV_EXPR
        and TRUNC_MOD_EXPR to an earlier position.
        and TRUNC_MOD_EXPR to an earlier position.
2003-09-19  Andrew MacLeod  
2003-09-19  Andrew MacLeod  
        * tree-ssa-ccp.c (cfg_edges): Rename to cfg_blocks.
        * tree-ssa-ccp.c (cfg_edges): Rename to cfg_blocks.
        (cfg_blocks_num, cfg_blocks_head, cfg_blocks_tail): New. Queue markers.
        (cfg_blocks_num, cfg_blocks_head, cfg_blocks_tail): New. Queue markers.
        (bb_in_list): New. Vector indicating if a BB is in the cfg_blocks list.
        (bb_in_list): New. Vector indicating if a BB is in the cfg_blocks list.
        (tree_ssa_ccp): Use new routines.
        (tree_ssa_ccp): Use new routines.
        (add_control_edge): Add to cfg_blocks list.
        (add_control_edge): Add to cfg_blocks list.
        (initialize): Initialize new variables.
        (initialize): Initialize new variables.
        (finalize): Free allocations.
        (finalize): Free allocations.
        (cfg_blocks_empty): New. Is cfg_blocks queue list.
        (cfg_blocks_empty): New. Is cfg_blocks queue list.
        (cfg_blocks_add): New. Add a basic block to cfg_blocks list.
        (cfg_blocks_add): New. Add a basic block to cfg_blocks list.
        (cfg_blocks_pop): New. Get a basic_block from the list.
        (cfg_blocks_pop): New. Get a basic_block from the list.
2003-09-18  Richard Henderson  
2003-09-18  Richard Henderson  
        * tree-cfg.c (struct rusv_data): Add may_throw, may_branch.
        * tree-cfg.c (struct rusv_data): Add may_throw, may_branch.
        (remove_useless_stmts_and_vars_1): Set them.
        (remove_useless_stmts_and_vars_1): Set them.
        (remove_useless_stmts_and_vars_goto): Likewise.
        (remove_useless_stmts_and_vars_goto): Likewise.
        (remove_useless_stmts_and_vars_tf): Transform to compound_expr
        (remove_useless_stmts_and_vars_tf): Transform to compound_expr
        if only fallthrough.
        if only fallthrough.
        (remove_useless_stmts_and_vars_tc): Kill region if nothrow.
        (remove_useless_stmts_and_vars_tc): Kill region if nothrow.
        Detect catch regions that don't propagate exceptions.
        Detect catch regions that don't propagate exceptions.
        (remove_useless_stmts_and_vars): Zero entire data struct.
        (remove_useless_stmts_and_vars): Zero entire data struct.
2003-09-18  Richard Henderson  
2003-09-18  Richard Henderson  
        * tree-eh.c (lower_try_finally_dup_block): New.
        * tree-eh.c (lower_try_finally_dup_block): New.
        (honor_protect_cleanup_actions, lower_try_finally_copy): Use it.
        (honor_protect_cleanup_actions, lower_try_finally_copy): Use it.
2003-09-18  Richard Henderson  
2003-09-18  Richard Henderson  
        * tree-cfg (remove_useless_stmts_and_vars_cond,
        * tree-cfg (remove_useless_stmts_and_vars_cond,
        remove_useless_stmts_and_vars_tf,
        remove_useless_stmts_and_vars_tf,
        remove_useless_stmts_and_vars_tc,
        remove_useless_stmts_and_vars_tc,
        remove_useless_stmts_and_vars_bind,
        remove_useless_stmts_and_vars_bind,
        remove_useless_stmts_and_vars_goto): Break out of ...
        remove_useless_stmts_and_vars_goto): Break out of ...
        (remove_useless_stmts_and_vars_1): ... here.  Rename to _1;
        (remove_useless_stmts_and_vars_1): ... here.  Rename to _1;
        take and use struct rusv_data.
        take and use struct rusv_data.
        (remove_useless_stmts_and_vars): New.  Loop until no change.
        (remove_useless_stmts_and_vars): New.  Loop until no change.
        * tree-flow.h (remove_useless_stmts_and_vars): Update decl.
        * tree-flow.h (remove_useless_stmts_and_vars): Update decl.
        * tree-ssa.c (rewrite_out_of_ssa): Don't loop here.
        * tree-ssa.c (rewrite_out_of_ssa): Don't loop here.
2003-09-18  Richard Henderson  
2003-09-18  Richard Henderson  
        * tree-pretty-print.c (dump_generic_node): Don't double indent asms.
        * tree-pretty-print.c (dump_generic_node): Don't double indent asms.
2003-09-18  Richard Henderson  
2003-09-18  Richard Henderson  
        * tree-eh.c: Include langhooks.h, remove errors.h.
        * tree-eh.c: Include langhooks.h, remove errors.h.
        (decide_copy_try_finally): Use estimate_num_insns to choose
        (decide_copy_try_finally): Use estimate_num_insns to choose
        between copy and switch implementations.
        between copy and switch implementations.
        * c-common.c (c_estimate_num_insns): Take an expr, not a decl.
        * c-common.c (c_estimate_num_insns): Take an expr, not a decl.
        * tree-inline.c (limits_allow_inlining): Pass it the body of the decl.
        * tree-inline.c (limits_allow_inlining): Pass it the body of the decl.
2003-09-18  Jeff Law  
2003-09-18  Jeff Law  
        * tree-ssa-dom.c (lookup_avail_expr): New argument which indicates
        * tree-ssa-dom.c (lookup_avail_expr): New argument which indicates
        if the expression should be entered into the hash table.  All
        if the expression should be entered into the hash table.  All
        callers updated.
        callers updated.
        (update_rhs_and_lookup_avail_expr): New function factored out
        (update_rhs_and_lookup_avail_expr): New function factored out
        of optimize_stmt.
        of optimize_stmt.
        * tree.h (commutative_tree_code, associative_tree_code): Declare
        * tree.h (commutative_tree_code, associative_tree_code): Declare
        * tree.c (commutative_tree_code, associative_tree_code): New
        * tree.c (commutative_tree_code, associative_tree_code): New
        functions.
        functions.
        (iterative_hash_expr): Use commutative_tree_code.
        (iterative_hash_expr): Use commutative_tree_code.
        * fold-const.c (operand_equal_p): Use commutative_tree_code
        * fold-const.c (operand_equal_p): Use commutative_tree_code
        rather than inlining the communitivy check.
        rather than inlining the communitivy check.
        (fold, nondestructive_fold_binary_to_constant): Similarly.
        (fold, nondestructive_fold_binary_to_constant): Similarly.
2003-09-18  Diego Novillo  
2003-09-18  Diego Novillo  
        * Makefile.in (tree-eh.o): Add dependency on errors.h
        * Makefile.in (tree-eh.o): Add dependency on errors.h
        * tree-eh.c: Include errors.h
        * tree-eh.c: Include errors.h
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree-cfg.c (remove_useless_stmts_and_vars): Revert last change.
        * tree-cfg.c (remove_useless_stmts_and_vars): Revert last change.
        * tree-flow.h, tree-ssa.c: Likewise.
        * tree-flow.h, tree-ssa.c: Likewise.
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree-eh.c (decide_copy_try_finally): Remove forgotten debug code.
        * tree-eh.c (decide_copy_try_finally): Remove forgotten debug code.
2003-09-17  Daniel Berlin  
2003-09-17  Daniel Berlin  
        * tree-ssa-pre.c (pick_ssa_name): New function.
        * tree-ssa-pre.c (pick_ssa_name): New function.
        (code_motion): Use it.
        (code_motion): Use it.
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree-eh.c: New file.
        * tree-eh.c: New file.
        * Makefile.in (OBJS-common): Add it.
        * Makefile.in (OBJS-common): Add it.
        (tree-eh.o): New.
        (tree-eh.o): New.
        * calls.c (emit_call_1): New argument for full call expr.
        * calls.c (emit_call_1): New argument for full call expr.
        Check with lookup_stmt_eh_region to set REG_EH_REGION.
        Check with lookup_stmt_eh_region to set REG_EH_REGION.
        (expand_call): Likewise for tail-calls.
        (expand_call): Likewise for tail-calls.
        * except.c (struct eh_region): Add tree_label.
        * except.c (struct eh_region): Add tree_label.
        (gen_eh_region, gen_eh_region_cleanup, gen_eh_region_try,
        (gen_eh_region, gen_eh_region_cleanup, gen_eh_region_try,
        gen_eh_region_catch, gen_eh_region_allowed,
        gen_eh_region_catch, gen_eh_region_allowed,
        gen_eh_region_must_not_throw, get_eh_region_number,
        gen_eh_region_must_not_throw, get_eh_region_number,
        get_eh_region_may_contain_throw, get_eh_region_tree_label,
        get_eh_region_may_contain_throw, get_eh_region_tree_label,
        set_eh_region_tree_label, expand_resx_expr): New.
        set_eh_region_tree_label, expand_resx_expr): New.
        (expand_eh_region_start, expand_start_catch): Use them.
        (expand_eh_region_start, expand_start_catch): Use them.
        (expand_end_catch): Tidy.
        (expand_end_catch): Tidy.
        (note_eh_region_may_contain_throw): Take region argument.
        (note_eh_region_may_contain_throw): Take region argument.
        (note_current_region_may_contain_throw): New.
        (note_current_region_may_contain_throw): New.
        (get_exception_filter): Export.
        (get_exception_filter): Export.
        (collect_eh_region_array): Export.
        (collect_eh_region_array): Export.
        (remove_unreachable_regions): Check ERT_TRY based on reachability
        (remove_unreachable_regions): Check ERT_TRY based on reachability
        of catches, not reachability of continue_label.  Never remove
        of catches, not reachability of continue_label.  Never remove
        ERT_MUST_NOT_THROW regions.
        ERT_MUST_NOT_THROW regions.
        (collect_rtl_labels_from_trees): New.
        (collect_rtl_labels_from_trees): New.
        (convert_from_eh_region_ranges): Use it.
        (convert_from_eh_region_ranges): Use it.
        (connect_post_landing_pads): Handle dying cleanups.
        (connect_post_landing_pads): Handle dying cleanups.
        (struct reachable_info): Add callback data.
        (struct reachable_info): Add callback data.
        (add_reachable_handler): Invoke the callback.
        (add_reachable_handler): Invoke the callback.
        (foreach_reachable_handler): New.
        (foreach_reachable_handler): New.
        (reachable_handlers): Use it.
        (reachable_handlers): Use it.
        (arh_to_landing_pad, arh_to_label): New.
        (arh_to_landing_pad, arh_to_label): New.
        (can_throw_internal_1): Split out from can_throw_internal.
        (can_throw_internal_1): Split out from can_throw_internal.
        (can_throw_external_1): Similarly.
        (can_throw_external_1): Similarly.
        * except.h: Update.
        * except.h: Update.
        * expr.c (expand_expr): Handle RESX_EXPR, FILTER_EXPR.
        * expr.c (expand_expr): Handle RESX_EXPR, FILTER_EXPR.
        * gimplify.c (gimplify_modify_expr): Use tree_could_trap_p.
        * gimplify.c (gimplify_modify_expr): Use tree_could_trap_p.
        * stmt.c (using_eh_for_cleanups_p): Export.
        * stmt.c (using_eh_for_cleanups_p): Export.
        (expand_return): Allow any typed rhs.
        (expand_return): Allow any typed rhs.
        * timevar.def (TV_TREE_EH): New.
        * timevar.def (TV_TREE_EH): New.
        * tree-cfg.c (eh_stack): Kill.
        * tree-cfg.c (eh_stack): Kill.
        (build_tree_cfg): Don't set it.  Kill code to handle EH.
        (build_tree_cfg): Don't set it.  Kill code to handle EH.
        (could_trap_p): Move to tree-eh.c as tree_could_trap_p.
        (could_trap_p): Move to tree-eh.c as tree_could_trap_p.
        (get_eh_region_type, make_try_expr_blocks, make_catch_expr_blocks,
        (get_eh_region_type, make_try_expr_blocks, make_catch_expr_blocks,
        make_eh_filter_expr_blocks, try_finallys): Kill.
        make_eh_filter_expr_blocks, try_finallys): Kill.
        (make_edges): Kill code to handle EH.
        (make_edges): Kill code to handle EH.
        (make_ctrl_stmt_edges): Kill TRY_FINALLY_EXPR, CATCH_EXPR,
        (make_ctrl_stmt_edges): Kill TRY_FINALLY_EXPR, CATCH_EXPR,
        EH_FILTER_EXPR.  Handle RESX_EXPR.
        EH_FILTER_EXPR.  Handle RESX_EXPR.
        (make_call_expr_edges): Kill.
        (make_call_expr_edges): Kill.
        (make_exit_edges): Use make_eh_edges.
        (make_exit_edges): Use make_eh_edges.
        (label_to_block): New.
        (label_to_block): New.
        (make_goto_expr_edges): Use it.
        (make_goto_expr_edges): Use it.
        (is_ctrl_stmt): Add RESX_EXPR.
        (is_ctrl_stmt): Add RESX_EXPR.
        (is_ctrl_altering_stmt): Restructure.  Use tree_can_throw_internal.
        (is_ctrl_altering_stmt): Restructure.  Use tree_can_throw_internal.
        (last_exec_block, compute_reachable_eh): Kill.
        (last_exec_block, compute_reachable_eh): Kill.
        * tree-dfa.c (get_stmt_operands): Add RESX_EXPR.
        * tree-dfa.c (get_stmt_operands): Add RESX_EXPR.
        (get_expr_operands): Add FILTER_EXPR.
        (get_expr_operands): Add FILTER_EXPR.
        * tree-dump.c (dump_files): Add tree-eh.
        * tree-dump.c (dump_files): Add tree-eh.
        * tree-flow.h (struct stmt_ann_d): Kill reachable_exception_handlers.
        * tree-flow.h (struct stmt_ann_d): Kill reachable_exception_handlers.
        (label_to_block, lower_eh_constructs, make_eh_edges,
        (label_to_block, lower_eh_constructs, make_eh_edges,
        tree_could_trap_p, tree_could_throw_p, tree_can_throw_internal,
        tree_could_trap_p, tree_could_throw_p, tree_can_throw_internal,
        tree_can_throw_external): Declare.
        tree_can_throw_external): Declare.
        * tree-optimize.c (optimize_function_tree): Call lower_eh_constructs.
        * tree-optimize.c (optimize_function_tree): Call lower_eh_constructs.
        (tree_rest_of_compilation): Save tree for inlining.
        (tree_rest_of_compilation): Save tree for inlining.
        * tree-pretty-print.c (dump_generic_node): Handle FILTER_EXPR,
        * tree-pretty-print.c (dump_generic_node): Handle FILTER_EXPR,
        RESX_EXPR.
        RESX_EXPR.
        * tree-simple.c (is_gimple_stmt): Add RESX_EXPR.
        * tree-simple.c (is_gimple_stmt): Add RESX_EXPR.
        (is_gimple_val): Add FILTER_EXPR.
        (is_gimple_val): Add FILTER_EXPR.
        * tree-ssa-dce.c (stmt_useful_p): Restructure.  Add lhs of
        * tree-ssa-dce.c (stmt_useful_p): Restructure.  Add lhs of
        EXC_PTR_EXPR or FILTER_EXPR.
        EXC_PTR_EXPR or FILTER_EXPR.
        * tree.def (FILTER_EXPR, RESX_EXPR): New.
        * tree.def (FILTER_EXPR, RESX_EXPR): New.
        * tree.h (enum tree_dump_index): Add TDI_eh.
        * tree.h (enum tree_dump_index): Add TDI_eh.
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree.c (tsi_link_before): Remove unnecessary parens.
        * tree.c (tsi_link_before): Remove unnecessary parens.
        (tsi_link_chain_before, tsi_delink): Likewise.
        (tsi_link_chain_before, tsi_delink): Likewise.
        (tsi_link_after): Accept the case if the iterator points
        (tsi_link_after): Accept the case if the iterator points
        to a NULL node; treat it as an empty list.
        to a NULL node; treat it as an empty list.
        (tsi_link_chain_after): Likewise.  Update iterator properly
        (tsi_link_chain_after): Likewise.  Update iterator properly
        for TSI_CHAIN_END.
        for TSI_CHAIN_END.
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree-inline.c (debug_find_tree_1, debug_find_tree): New.
        * tree-inline.c (debug_find_tree_1, debug_find_tree): New.
2003-09-17  Richard Henderson  
2003-09-17  Richard Henderson  
        * tree-cfg.c (struct rusv_data): New.
        * tree-cfg.c (struct rusv_data): New.
        (remove_useless_stmts_and_vars_1): Rename from
        (remove_useless_stmts_and_vars_1): Rename from
        remove_useless_stmts_and_vars.  Use rusv_data.  Handle goto-next
        remove_useless_stmts_and_vars.  Use rusv_data.  Handle goto-next
        via remembering the last goto seen, and zapping it when appropriate.
        via remembering the last goto seen, and zapping it when appropriate.
        (remove_useless_stmts_and_vars): New.  Loop until done.
        (remove_useless_stmts_and_vars): New.  Loop until done.
        * tree-flow.h (remove_useless_stmts_and_vars): Update decl.
        * tree-flow.h (remove_useless_stmts_and_vars): Update decl.
        * tree-optimize.c (optimize_function_tree): Don't cache fnbody.
        * tree-optimize.c (optimize_function_tree): Don't cache fnbody.
        Dump data after remove_useless_stmts_and_vars.
        Dump data after remove_useless_stmts_and_vars.
        * tree-ssa.c (rewrite_out_of_ssa): Kill loop around
        * tree-ssa.c (rewrite_out_of_ssa): Kill loop around
        remove_useless_stmts_and_vars.
        remove_useless_stmts_and_vars.
        * tree-dump.c (dump_files): Add .useless.
        * tree-dump.c (dump_files): Add .useless.
        * tree.h (enum tree_dump_index): Add TDI_useless.
        * tree.h (enum tree_dump_index): Add TDI_useless.
2003-09-17  Diego Novillo  
2003-09-17  Diego Novillo  
        * pretty-print.c (pp_write_text_to_stream): Export.
        * pretty-print.c (pp_write_text_to_stream): Export.
        * pretty-print.h (pp_write_text_to_stream): Declare.
        * pretty-print.h (pp_write_text_to_stream): Declare.
        * tree-pretty-print.c (print_generic_stmt): Flush to file.
        * tree-pretty-print.c (print_generic_stmt): Flush to file.
        (dump_generic_node): Call pp_write_text_to_stream.
        (dump_generic_node): Call pp_write_text_to_stream.
        (maybe_init_pretty_print): Take file argument; associate the
        (maybe_init_pretty_print): Take file argument; associate the
        stream with the buffer.
        stream with the buffer.
2003-09-17  Jeff Law  
2003-09-17  Jeff Law  
        * tree-ssa-ccp.c (ccp_fold): If the return value has the wrong
        * tree-ssa-ccp.c (ccp_fold): If the return value has the wrong
        type, try to convert it to the proper type rather than failing.
        type, try to convert it to the proper type rather than failing.
        * tree-ssa-dom.c (optimize_stmt): Note that the statement is
        * tree-ssa-dom.c (optimize_stmt): Note that the statement is
        modified, even if we just change the virtual operands.  If
        modified, even if we just change the virtual operands.  If
        the statement was modified by const/copy propagation, then
        the statement was modified by const/copy propagation, then
        set may_have_exposed_new_symbols.
        set may_have_exposed_new_symbols.
2003-09-17  Diego Novillo  
2003-09-17  Diego Novillo  
        * tree-dfa.c (find_vars_r): Do not consider 'void *' pointers as
        * tree-dfa.c (find_vars_r): Do not consider 'void *' pointers as
        dereferenced when scanning function call arguments.
        dereferenced when scanning function call arguments.
        * tree-flow-inline.h (may_propagate_copy): Block propagation of
        * tree-flow-inline.h (may_propagate_copy): Block propagation of
        pointers when they have different memory tags.
        pointers when they have different memory tags.
        * tree-ssa-copyprop.c (propagate_copy): When copy propagating
        * tree-ssa-copyprop.c (propagate_copy): When copy propagating
        pointers, abort if the two pointers don't have identical memory
        pointers, abort if the two pointers don't have identical memory
        tags.
        tags.
2003-09-16  Jeff Law  
2003-09-16  Jeff Law  
        * tree-ssa-ccp.c (visit_stmt): Do not set DONT_SIMULATE_AGAIN
        * tree-ssa-ccp.c (visit_stmt): Do not set DONT_SIMULATE_AGAIN
        just because a statement as virtual definitions.
        just because a statement as virtual definitions.
        (likely_value): A CALL_EXPR is assumed to return a VARYING
        (likely_value): A CALL_EXPR is assumed to return a VARYING
        result, regardless of its operands.
        result, regardless of its operands.
2003-09-15  Jason Merrill  
2003-09-15  Jason Merrill  
        * tree-simple.c (is_gimple_val): Allow addresses of all decls.
        * tree-simple.c (is_gimple_val): Allow addresses of all decls.
        (is_gimple_const): Allow addresses of all non-weak statics.
        (is_gimple_const): Allow addresses of all non-weak statics.
        * tree-ssa-ccp.c (fold_stmt): Return bool.
        * tree-ssa-ccp.c (fold_stmt): Return bool.
        * tree-flow.h: Adjust prototype.
        * tree-flow.h: Adjust prototype.
        * tree-ssa-dom.c (optimize_stmt): If folding changed stuff, we
        * tree-ssa-dom.c (optimize_stmt): If folding changed stuff, we
        need to recalculate the vops.
        need to recalculate the vops.
2003-09-13  Diego Novillo  
2003-09-13  Diego Novillo  
        Fix PR optimization/12268
        Fix PR optimization/12268
        * tree-dfa.c (add_referenced_var): Call-clobbered pointers may
        * tree-dfa.c (add_referenced_var): Call-clobbered pointers may
        point to global memory.
        point to global memory.
2003-09-13  Jason Merrill  
2003-09-13  Jason Merrill  
        * c-common.c (c_apply_type_quals_to_decl): Unset TREE_READONLY for
        * c-common.c (c_apply_type_quals_to_decl): Unset TREE_READONLY for
        types with constructors.
        types with constructors.
        Remove superfluous references to TREE_TYPE (decl).
        Remove superfluous references to TREE_TYPE (decl).
2003-09-13  Diego Novillo  
2003-09-13  Diego Novillo  
        * opts.c (decode_options): Enable must-alias optimization by default.
        * opts.c (decode_options): Enable must-alias optimization by default.
        * tree-dfa.c (get_expr_operands): Always call add_stmt_operand when
        * tree-dfa.c (get_expr_operands): Always call add_stmt_operand when
        dealing with ADDR_EXPR nodes.
        dealing with ADDR_EXPR nodes.
        (add_stmt_operand): If the variable has an alias set
        (add_stmt_operand): If the variable has an alias set
        of size zero, abort.
        of size zero, abort.
        Call get_base_symbol() to retrieve the variable from an ADDR_EXPR
        Call get_base_symbol() to retrieve the variable from an ADDR_EXPR
        node.
        node.
        (compute_alias_sets): Deep copy the aliases array when triggering
        (compute_alias_sets): Deep copy the aliases array when triggering
        the alias grouping heuristic.
        the alias grouping heuristic.
        Don't group aliases if -ftree-must-alias is given.
        Don't group aliases if -ftree-must-alias is given.
        * tree-must-alias.c (tree_compute_must_alias): Call
        * tree-must-alias.c (tree_compute_must_alias): Call
        dump_referenced_vars when doing detailed dumps.
        dump_referenced_vars when doing detailed dumps.
        Rename promoted_vars to vars_to_rename.  Update all users.
        Rename promoted_vars to vars_to_rename.  Update all users.
        (find_addressable_vars): Always mark statements modified.
        (find_addressable_vars): Always mark statements modified.
        (promote_var): Also mark aliases of promoted variable to be
        (promote_var): Also mark aliases of promoted variable to be
        renamed.
        renamed.
        Call find_variable_in and remove_element_from to update varrays for
        Call find_variable_in and remove_element_from to update varrays for
        call-clobbered variables and alias sets.
        call-clobbered variables and alias sets.
        (find_variable_in): New local function.
        (find_variable_in): New local function.
        (remove_element_from): New local function.
        (remove_element_from): New local function.
        * varray.c (varray_copy): New function.
        * varray.c (varray_copy): New function.
        * varray.h (varray_copy): Declare.
        * varray.h (varray_copy): Declare.
2003-09-13  Diego Novillo  
2003-09-13  Diego Novillo  
        * tree-flow-inline.h (is_optimizable_addr_expr): Remove.  Update
        * tree-flow-inline.h (is_optimizable_addr_expr): Remove.  Update
        all users.
        all users.
        * tree-ssa-dom.c (optimize_stmt): Do not propagate SSA names from
        * tree-ssa-dom.c (optimize_stmt): Do not propagate SSA names from
        redundant expressions across abnormal edges.
        redundant expressions across abnormal edges.
2003-09-13  Zdenek Dvorak  
2003-09-13  Zdenek Dvorak  
        * tree-cfg.c (remove_unreachable_blocks): Clean up.
        * tree-cfg.c (remove_unreachable_blocks): Clean up.
        (debug_tree_bb_n): New.
        (debug_tree_bb_n): New.
        (is_ctrl_structure): Remove LOOP_EXPR.
        (is_ctrl_structure): Remove LOOP_EXPR.
        * tree-flow.h (debug_tree_bb_n): Declare.
        * tree-flow.h (debug_tree_bb_n): Declare.
2003-09-12  Andrew Macleod  
2003-09-12  Andrew Macleod  
        * tree-ssa-live.c (calculate_live_on_entry): Use default_def to add
        * tree-ssa-live.c (calculate_live_on_entry): Use default_def to add
        addition checks to live on entry calculations.
        addition checks to live on entry calculations.
        * tree-ssa.c (print_exprs_edge): New debug output function.
        * tree-ssa.c (print_exprs_edge): New debug output function.
        (coalesce_abnormal_edges): Add basic block information to output.
        (coalesce_abnormal_edges): Add basic block information to output.
        (coalesce_ssa_name): Use default_def instead of trying to compute live
        (coalesce_ssa_name): Use default_def instead of trying to compute live
        on entry variables.
        on entry variables.
2003-09-12  Diego Novillo  
2003-09-12  Diego Novillo  
        * tree-optimize.c (tree_rest_of_compilation): Set TREE_ASM_WRITTEN
        * tree-optimize.c (tree_rest_of_compilation): Set TREE_ASM_WRITTEN
        for functions that have errors.
        for functions that have errors.
2003-09-12  Diego Novillo  
2003-09-12  Diego Novillo  
        * tree-ssa-pre.c (graph_dump_file, graph_dump_flags): Remove
        * tree-ssa-pre.c (graph_dump_file, graph_dump_flags): Remove
        unused variables.
        unused variables.
2003-09-11  Daniel Berlin  
2003-09-11  Daniel Berlin  
        * tree-ssa-pre.c (reset_down_safe): Make test less conservative.
        * tree-ssa-pre.c (reset_down_safe): Make test less conservative.
        (cba_search_start_from): Start from abnormal edge arguments, too.
        (cba_search_start_from): Start from abnormal edge arguments, too.
        (cba_search_continue_from_to): Ditto here.
        (cba_search_continue_from_to): Ditto here.
2003-09-11  Daniel Berlin  
2003-09-11  Daniel Berlin  
        * tree-ssa-pre.c: s/#if ENABLE_CHECKING/#ifdef ENABLE_CHECKING/g.
        * tree-ssa-pre.c: s/#if ENABLE_CHECKING/#ifdef ENABLE_CHECKING/g.
        Add more comments to DFS searching functions.
        Add more comments to DFS searching functions.
        (cba_search_reach_from_to): Remove empty function.
        (cba_search_reach_from_to): Remove empty function.
        (code_motion): Remove #if 0'd code.
        (code_motion): Remove #if 0'd code.
        (pre_expression): Ditto.
        (pre_expression): Ditto.
        * tree.h (tree_dump_index): Remove TDI_predot.
        * tree.h (tree_dump_index): Remove TDI_predot.
        * tree-dump.c (dump_files): Ditto.
        * tree-dump.c (dump_files): Ditto.
2003-09-11  Jason Merrill  
2003-09-11  Jason Merrill  
        Make EDGE_FALLTHRU meaningful for tree-cfg.
        Make EDGE_FALLTHRU meaningful for tree-cfg.
        * tree-cfg.c (make_edges): Set EDGE_FALLTHRU on fallthrough edge.
        * tree-cfg.c (make_edges): Set EDGE_FALLTHRU on fallthrough edge.
        (make_exit_edges): Likewise.
        (make_exit_edges): Likewise.
        (make_ctrl_stmt_edges): Don't set EDGE_FALLTHRU on edges into a
        (make_ctrl_stmt_edges): Don't set EDGE_FALLTHRU on edges into a
        control structure.
        control structure.
        (handle_switch_fallthru): Clear EDGE_FALLTHRU after inserting a goto.
        (handle_switch_fallthru): Clear EDGE_FALLTHRU after inserting a goto.
        (find_insert_location): Only insert after a CALL_EXPR or MODIFY_EXPR.
        (find_insert_location): Only insert after a CALL_EXPR or MODIFY_EXPR.
        (bsi_insert_on_edge_immediate): Count outgoing abnormal edges.
        (bsi_insert_on_edge_immediate): Count outgoing abnormal edges.
        Insert before all control stmts.
        Insert before all control stmts.
        (bsi_link_after): Handle a block with nops after the last stmt.
        (bsi_link_after): Handle a block with nops after the last stmt.
        Rename some things to clarify difference between "control structures"
        Rename some things to clarify difference between "control structures"
        (i.e. COND_EXPR) and "control statements" (also GOTO_EXPR).
        (i.e. COND_EXPR) and "control statements" (also GOTO_EXPR).
        * basic-block.h (BB_CONTROL_STRUCTURE): Rename from BB_CONTROL_EXPR.
        * basic-block.h (BB_CONTROL_STRUCTURE): Rename from BB_CONTROL_EXPR.
        * tree-cfg.c (REMOVE_NON_CONTROL_STRUCTS): Rename from
        * tree-cfg.c (REMOVE_NON_CONTROL_STRUCTS): Rename from
        REMOVE_NON_CONTROL_STMTS.
        REMOVE_NON_CONTROL_STMTS.
        (REMOVE_CONTROL_STRUCTS): Rename from REMOVE_CONTROL_STMTS.
        (REMOVE_CONTROL_STRUCTS): Rename from REMOVE_CONTROL_STMTS.
        (make_ctrl_stmt_edges): Move GOTO_EXPR/RETURN_EXPR handling here...
        (make_ctrl_stmt_edges): Move GOTO_EXPR/RETURN_EXPR handling here...
        (make_exit_edges): ...from here.
        (make_exit_edges): ...from here.
        (is_ctrl_altering_stmt): Don't accept GOTO_EXPR/RETURN_EXPR.
        (is_ctrl_altering_stmt): Don't accept GOTO_EXPR/RETURN_EXPR.
        (is_ctrl_structure): Renamed from old is_ctrl_stmt.
        (is_ctrl_structure): Renamed from old is_ctrl_stmt.
        (is_ctrl_stmt): New fn.
        (is_ctrl_stmt): New fn.
        (bsi_move_to_bb_end): Use it.
        (bsi_move_to_bb_end): Use it.
        (stmt_starts_bb_p): Use is_ctrl_stmt and is_ctrl_altering_stmt.
        (stmt_starts_bb_p): Use is_ctrl_stmt and is_ctrl_altering_stmt.
        * tree-flow.h: Add prototype.
        * tree-flow.h: Add prototype.
        * tree-ssa-ccp.c, tree-ssa-dom.c: Update for name changes.
        * tree-ssa-ccp.c, tree-ssa-dom.c: Update for name changes.
2003-09-10  Daniel Berlin  
2003-09-10  Daniel Berlin  
        * tree-ssa-pre.c (ephi_has_bottom): Remove dead function.
        * tree-ssa-pre.c (ephi_has_bottom): Remove dead function.
        (ephi_has_unsafe_arg): New function.
        (ephi_has_unsafe_arg): New function.
        (compute_down_safety): Use it.
        (compute_down_safety): Use it.
        (reset_down_safe): Continue search on abnormal edges, too.
        (reset_down_safe): Continue search on abnormal edges, too.
2003-09-10  Jason Merrill  
2003-09-10  Jason Merrill  
        * gimplify.c (gimplify_asm_expr): Add post_p parm.
        * gimplify.c (gimplify_asm_expr): Add post_p parm.
        (get_initialized_tmp_var): Add post_p parm.
        (get_initialized_tmp_var): Add post_p parm.
        (internal_get_tmp_var): Likewise.
        (internal_get_tmp_var): Likewise.
        (gimplify_expr, get_formal_tmp_var): Pass it.
        (gimplify_expr, get_formal_tmp_var): Pass it.
        * c-simplify.c (gimplify_decl_stmt): Pass it.
        * c-simplify.c (gimplify_decl_stmt): Pass it.
        * tree-simple.h: Adjust prototype.
        * tree-simple.h: Adjust prototype.
        * tree-cfg.c (make_call_expr_edges): Break out from...
        * tree-cfg.c (make_call_expr_edges): Break out from...
        (make_exit_edges): ...here.  Check TREE_NOTHROW.
        (make_exit_edges): ...here.  Check TREE_NOTHROW.
        (is_ctrl_altering_stmt): Check TREE_NOTHROW.
        (is_ctrl_altering_stmt): Check TREE_NOTHROW.
2003-09-10  Paul Brook  
2003-09-10  Paul Brook  
        * gimplify.c (gimplify_compound_lval): Treat REALPART_EXPR and
        * gimplify.c (gimplify_compound_lval): Treat REALPART_EXPR and
        IMAGPART_EXPR the same as COMPONENT_REF.
        IMAGPART_EXPR the same as COMPONENT_REF.
        * tree-simple.c (is_gimple_addr_expr_arg): Ditto.
        * tree-simple.c (is_gimple_addr_expr_arg): Ditto.
        (is_gimple_lvalue): Remove REALPART_EXPR and IMAGPART_EXPR.
        (is_gimple_lvalue): Remove REALPART_EXPR and IMAGPART_EXPR.
2003-09-10  Diego Novillo  
2003-09-10  Diego Novillo  
        * c-pretty-print.c (decl_name_str): New local function.
        * c-pretty-print.c (decl_name_str): New local function.
        (pp_c_direct_declarator): Call it.
        (pp_c_direct_declarator): Call it.
        (pp_c_primary_expression): Call it.
        (pp_c_primary_expression): Call it.
        (pp_c_id_expression): Call it.
        (pp_c_id_expression): Call it.
        (pp_c_statement): Call it.
        (pp_c_statement): Call it.
2003-09-10  Diego Novillo  
2003-09-10  Diego Novillo  
        * tree-pretty-print.c (dump_generic_node): Change string used to
        * tree-pretty-print.c (dump_generic_node): Change string used to
        display _DECL nodes with no DECL_NAME.
        display _DECL nodes with no DECL_NAME.
2003-09-10  Diego Novillo  
2003-09-10  Diego Novillo  
        * tree-dfa.c (add_referenced_var): Handle cases when argument
        * tree-dfa.c (add_referenced_var): Handle cases when argument
        walk_state is NULL.
        walk_state is NULL.
        (add_referenced_tmp_var): New function.
        (add_referenced_tmp_var): New function.
        * tree-flow.h (add_referenced_tmp_var): Declare it.
        * tree-flow.h (add_referenced_tmp_var): Declare it.
        * tree-ssa-pre.c (pre_expression): Call it.
        * tree-ssa-pre.c (pre_expression): Call it.
        * tree-ssa-live.c (create_ssa_var_map): Add checking for variables
        * tree-ssa-live.c (create_ssa_var_map): Add checking for variables
        being in real and virtual operands.
        being in real and virtual operands.
2003-09-01  Zdenek Dvorak  
2003-09-01  Zdenek Dvorak  
            Jeff Law  
            Jeff Law  
        * tree-flow.h (remove_unreachable_blocks): Declare.
        * tree-flow.h (remove_unreachable_blocks): Declare.
        * tree-cfg.c (remove_unreachable_blocks): Export. Return true
        * tree-cfg.c (remove_unreachable_blocks): Export. Return true
        if blocks were removed.
        if blocks were removed.
        * tree-ssa-dom.c (optimize_block, optimize_stmt): Record whether
        * tree-ssa-dom.c (optimize_block, optimize_stmt): Record whether
        the cfg has changed.  Schedule jump threading.  If a block
        the cfg has changed.  Schedule jump threading.  If a block
        has more than one pred, then do not record equivalences created
        has more than one pred, then do not record equivalences created
        by a controlling COND_EXPR.
        by a controlling COND_EXPR.
        (edges_to_redirect, redirection_targets): New variables.
        (edges_to_redirect, redirection_targets): New variables.
        (thread_edge): Split out of optimize_block.
        (thread_edge): Split out of optimize_block.
        (tree_ssa_dominator_optimize); Remove unreachable blocks and
        (tree_ssa_dominator_optimize); Remove unreachable blocks and
        recompute dominator tree when the cfg changes.
        recompute dominator tree when the cfg changes.
2003-09-07  Steven Bosscher  
2003-09-07  Steven Bosscher  
        * c-tree.h: Don't declare c_genericize, it's already
        * c-tree.h: Don't declare c_genericize, it's already
        declared in c-common.h.
        declared in c-common.h.
2003-09-07  Steven Bosscher  
2003-09-07  Steven Bosscher  
        Fix PR optimization/12198
        Fix PR optimization/12198
        * tree-cfg.c (value_matches_some_label): Handle integer
        * tree-cfg.c (value_matches_some_label): Handle integer
        case ranges.
        case ranges.
2003-09-06  Zdenek Dvorak  
2003-09-06  Zdenek Dvorak  
        * tree-iterator.h (tsi_iterator_update): Added TSI_CHAIN_START,
        * tree-iterator.h (tsi_iterator_update): Added TSI_CHAIN_START,
        TSI_CHAIN_END, TSI_CONTINUE_LINKING and comments.
        TSI_CHAIN_END, TSI_CONTINUE_LINKING and comments.
        (tsi_link_chain_before, tsi_link_chain_after): Declare.
        (tsi_link_chain_before, tsi_link_chain_after): Declare.
        * tree.c (tsi_link_chain_before, tsi_link_chain_after): New.
        * tree.c (tsi_link_chain_before, tsi_link_chain_after): New.
        (tsi_link_before, tsi_link_after): Handle new TSI_...
        (tsi_link_before, tsi_link_after): Handle new TSI_...
        positions.
        positions.
2003-09-06  Diego Novillo  
2003-09-06  Diego Novillo  
        * varray.c (element): Add entry for 'tree *'.
        * varray.c (element): Add entry for 'tree *'.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_TREE_PTR.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_TREE_PTR.
        (union varray_data_tag): Add entry for 'tree *'.
        (union varray_data_tag): Add entry for 'tree *'.
        (VARRAY_TREE_PTR_INIT): Define.
        (VARRAY_TREE_PTR_INIT): Define.
        (VARRAY_TREE_PTR): Define.
        (VARRAY_TREE_PTR): Define.
        (VARRAY_PUSH_TREE_PTR): Define.
        (VARRAY_PUSH_TREE_PTR): Define.
        (VARRAY_TOP_TREE_PTR): Define.
        (VARRAY_TOP_TREE_PTR): Define.
        * tree-cfg.c: Replace uses of VARRAY_GENERIC_PTR with
        * tree-cfg.c: Replace uses of VARRAY_GENERIC_PTR with
        VARRAY_TREE_PTR when accessing operand arrays.
        VARRAY_TREE_PTR when accessing operand arrays.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-copyprop.c: Likewise.
        * tree-ssa-copyprop.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-dom.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-live.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-flow.h (struct operands_d): Remove 'skip' GC markers from
        * tree-flow.h (struct operands_d): Remove 'skip' GC markers from
        all fields.
        all fields.
        (struct dataflow_d): Likewise.
        (struct dataflow_d): Likewise.
2003-09-05  Diego Novillo  
2003-09-05  Diego Novillo  
        * tree-dfa.c (find_referenced_vars): Re-enable .GLOBAL_VAR
        * tree-dfa.c (find_referenced_vars): Re-enable .GLOBAL_VAR
        optimization.
        optimization.
2003-09-05  Daniel Berlin  
2003-09-05  Daniel Berlin  
        * tree.h (tree_eref_common): Make stmt a tree, not a tree *.
        * tree.h (tree_eref_common): Make stmt a tree, not a tree *.
        * tree-ssa-pre.c: Transform all tree *'s to tree.
        * tree-ssa-pre.c: Transform all tree *'s to tree.
2003-09-05  Paul Brook  
2003-09-05  Paul Brook  
        * tree.h (enum tree_index): Delete TI_SIGNED_SIZE_TYPE here.
        * tree.h (enum tree_index): Delete TI_SIGNED_SIZE_TYPE here.
        (signed_size_type_node): No longer a member of global_trees.
        (signed_size_type_node): No longer a member of global_trees.
        * c-common.h (enum c_tree_index): New member CTI_SIGNED_SIZE_TYPE.
        * c-common.h (enum c_tree_index): New member CTI_SIGNED_SIZE_TYPE.
        (signed_size_type_node): Moved, now a member of c_global_trees.
        (signed_size_type_node): Moved, now a member of c_global_trees.
2003-09-05  Diego Novillo  
2003-09-05  Diego Novillo  
        * tree-dfa.c (find_referenced_vars): Temporarily disable
        * tree-dfa.c (find_referenced_vars): Temporarily disable
        .GLOBAL_VAR optimization.
        .GLOBAL_VAR optimization.
2003-09-04  Daniel Berlin  
2003-09-04  Daniel Berlin  
        * tree-alias-common.c:  Add overview.
        * tree-alias-common.c:  Add overview.
        * tree-alias-ander.c: Add overview and more specific comments on what
        * tree-alias-ander.c: Add overview and more specific comments on what
        each function does.
        each function does.
2003-09-04  Diego Novillo  
2003-09-04  Diego Novillo  
        * tree-optimize.c (tree_rest_of_compilation): Return if errorcount
        * tree-optimize.c (tree_rest_of_compilation): Return if errorcount
        or sorrycount are non-zero.
        or sorrycount are non-zero.
2003-09-04  Diego Novillo  
2003-09-04  Diego Novillo  
        * tree-cfg.c (cleanup_tree_cfg): Traverse basic blocks
        * tree-cfg.c (cleanup_tree_cfg): Traverse basic blocks
        with FOR_EACH_BB.
        with FOR_EACH_BB.
        (remove_useless_stmts_and_vars): Likewise.
        (remove_useless_stmts_and_vars): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        * tree-dfa.c (remove_all_phi_nodes_for): Make sure that the new
        * tree-dfa.c (remove_all_phi_nodes_for): Make sure that the new
        list of PHI nodes is NULL-terminated.
        list of PHI nodes is NULL-terminated.
        Add sanity checks to make sure all the PHI nodes for variables to
        Add sanity checks to make sure all the PHI nodes for variables to
        rename are gone.
        rename are gone.
2003-09-04  Diego Novillo  
2003-09-04  Diego Novillo  
        * tree-dfa.c (struct walk_state): Add field 'num_calls'.
        * tree-dfa.c (struct walk_state): Add field 'num_calls'.
        (add_call_clobber_ops): New local function.
        (add_call_clobber_ops): New local function.
        (add_call_read_ops): New local function.
        (add_call_read_ops): New local function.
        (get_expr_operands): Call them.
        (get_expr_operands): Call them.
        (add_stmt_operand): Call-clobbered variables are always added to
        (add_stmt_operand): Call-clobbered variables are always added to
        virtual operands.
        virtual operands.
        (find_referenced_vars): If the number of call-clobbered variables
        (find_referenced_vars): If the number of call-clobbered variables
        and number of call sites is larger than a certain threshold, group
        and number of call sites is larger than a certain threshold, group
        all call-clobbered variables under .GLOBAL_VAR.
        all call-clobbered variables under .GLOBAL_VAR.
        (find_vars_r): Count the number of call sites.
        (find_vars_r): Count the number of call sites.
        Don't add .GLOBAL_VAR to the list of referenced variables.
        Don't add .GLOBAL_VAR to the list of referenced variables.
        (add_referenced_var): If the addressable variable is an array,
        (add_referenced_var): If the addressable variable is an array,
        register alias set of the type of the elements, not the type of the
        register alias set of the type of the elements, not the type of the
        array.
        array.
        * tree-ssa-dom.c (mark_new_vars_to_rename): Rename from
        * tree-ssa-dom.c (mark_new_vars_to_rename): Rename from
        find_new_vars_to_rename.  Update all users.
        find_new_vars_to_rename.  Update all users.
        Before scanning the statement for new operands, mark the existing
        Before scanning the statement for new operands, mark the existing
        virtual operands to be renamed again.
        virtual operands to be renamed again.
        (optimize_stmt): Also check for newly exposed variables when doing
        (optimize_stmt): Also check for newly exposed variables when doing
        redundancy elimination.
        redundancy elimination.
        * tree-ssa.c (rewrite_into_ssa): Don't abort when rename_count is
        * tree-ssa.c (rewrite_into_ssa): Don't abort when rename_count is
        greater than 2.  Simply stop trying at 3.
        greater than 2.  Simply stop trying at 3.
        (prepare_operand_for_rename): New function.
        (prepare_operand_for_rename): New function.
        (mark_def_sites): Call it.
        (mark_def_sites): Call it.
        (rewrite_stmt): Don't check if the operand is an SSA_NAME before
        (rewrite_stmt): Don't check if the operand is an SSA_NAME before
        calling rewrite_operand.
        calling rewrite_operand.
        (rewrite_operand): Don't abort if the operand was already an
        (rewrite_operand): Don't abort if the operand was already an
        SSA_NAME.  Ignore it.
        SSA_NAME.  Ignore it.
2003-09-03  Richard Henderson  
2003-09-03  Richard Henderson  
        * tree-optimize.c (set_save_expr_context, clear_decl_rtl,
        * tree-optimize.c (set_save_expr_context, clear_decl_rtl,
        tree_rest_of_compilation): Merge from mainline new file.
        tree_rest_of_compilation): Merge from mainline new file.
        * Makefile.in (tree-optimize.o): Update.
        * Makefile.in (tree-optimize.o): Update.
        * c-semantics.c (expand_stmt_toplev): New.
        * c-semantics.c (expand_stmt_toplev): New.
        * c-common.h (expand_stmt_toplev): Declare.
        * c-common.h (expand_stmt_toplev): Declare.
        * c-lang.c, objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Use it.
        * c-lang.c, objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Use it.
2003-09-03  Richard Henderson  
2003-09-03  Richard Henderson  
        * gimplify.c (gimplify_switch_expr): Leave the outermost cast
        * gimplify.c (gimplify_switch_expr): Leave the outermost cast
        as part of the switch condition.
        as part of the switch condition.
2003-09-02  Diego Novillo  
2003-09-02  Diego Novillo  
        * Makefile.in (tree.o): Add dependency on $(BASIC_BLOCK_H) and
        * Makefile.in (tree.o): Add dependency on $(BASIC_BLOCK_H) and
        $(TREE_FLOW_H)
        $(TREE_FLOW_H)
        * tree.c: Include basic-block.h and tree-flow.h
        * tree.c: Include basic-block.h and tree-flow.h
        (tsi_link_after): Adjust basic block tree pointers when inserting a
        (tsi_link_after): Adjust basic block tree pointers when inserting a
        new COMPOUND_EXPR.
        new COMPOUND_EXPR.
2003-09-02  Richard Henderson  
2003-09-02  Richard Henderson  
        * c-decl.c (finish_function): Fix misapplied patch.  Don't
        * c-decl.c (finish_function): Fix misapplied patch.  Don't
        free_after_parsing or free_after_compilation.  For real this time.
        free_after_parsing or free_after_compilation.  For real this time.
2003-09-01  Daniel Berlin  
2003-09-01  Daniel Berlin  
        * tree-ssa-pre.c (finalize_1):  Remove unnecessary call to
        * tree-ssa-pre.c (finalize_1):  Remove unnecessary call to
        insert_euse_in_preorder_dt_order.
        insert_euse_in_preorder_dt_order.
        (code_motion): Ditto.
        (code_motion): Ditto.
        (pre_expression): Ditto.
        (pre_expression): Ditto.
2003-09-01  Zdenek Dvorak  
2003-09-01  Zdenek Dvorak  
            Jeff Law  
            Jeff Law  
        * basic-block.h (BB_LOOP_CONTROL_EXPR): Remove.
        * basic-block.h (BB_LOOP_CONTROL_EXPR): Remove.
        * c-simplify.c (gimplify_c_loop): Create loops in a better shape.
        * c-simplify.c (gimplify_c_loop): Create loops in a better shape.
        * cfgloop.h (create_loop_notes): Declare.
        * cfgloop.h (create_loop_notes): Declare.
        * cfgloopmanip.c (create_loop_notes): New.
        * cfgloopmanip.c (create_loop_notes): New.
        * explow.c (probe_stack_range): Don't produce loop notes when we
        * explow.c (probe_stack_range): Don't produce loop notes when we
        recreate them.
        recreate them.
        * expr.c (emit_block_move_via_loop): Ditto.
        * expr.c (emit_block_move_via_loop): Ditto.
        * gimplify.c (build_and_jump): Export.
        * gimplify.c (build_and_jump): Export.
        (gimplify_loop_expr): Don't produce LOOP_EXPRs.
        (gimplify_loop_expr): Don't produce LOOP_EXPRs.
        * toplev.c (rest_of_compilation): Recreate loop notes if needed.
        * toplev.c (rest_of_compilation): Recreate loop notes if needed.
        * tree-cfg.c (make_loop_expr_edges, make_loop_expr_blocks): Removed.
        * tree-cfg.c (make_loop_expr_edges, make_loop_expr_blocks): Removed.
        (find_contained_blocks, make_ctrl_stmt_edges,
        (find_contained_blocks, make_ctrl_stmt_edges,
        remove_useless_stmts_and_vars, stmt_ends_bb_p, bsi_insert_before,
        remove_useless_stmts_and_vars, stmt_ends_bb_p, bsi_insert_before,
        find_insert_location, bsi_insert_on_edge_immediate,
        find_insert_location, bsi_insert_on_edge_immediate,
        merge_tree_blocks): Remove handling of LOOP_EXPRs.
        merge_tree_blocks): Remove handling of LOOP_EXPRs.
        (remove_stmt): Remove handling of BB_LOOP_CONTROL_EXPR.
        (remove_stmt): Remove handling of BB_LOOP_CONTROL_EXPR.
        (find_taken_edge): Remove comment on LOOP_EXPRs.
        (find_taken_edge): Remove comment on LOOP_EXPRs.
        (dump_tree_bb): Don't dump loop-related information.
        (dump_tree_bb): Don't dump loop-related information.
        (is_loop_stmt, is_latch_block_for): Removed.
        (is_loop_stmt, is_latch_block_for): Removed.
        (find_insert_location): Handle TRY_CATCH and TRY_FINALLY.
        (find_insert_location): Handle TRY_CATCH and TRY_FINALLY.
        * tree-flow.h (is_loop_stmt, loop_body, set_loop_body,
        * tree-flow.h (is_loop_stmt, loop_body, set_loop_body,
        is_latch_block_for): Removed.
        is_latch_block_for): Removed.
        * tree-dfa.c (get_stmt_operands): Don't handle LOOP_EXPRs.
        * tree-dfa.c (get_stmt_operands): Don't handle LOOP_EXPRs.
        * tree-simple.c (is_gimple_stmt): Remove handling of LOOP_EXPRs.
        * tree-simple.c (is_gimple_stmt): Remove handling of LOOP_EXPRs.
        * tree-simple.h: Remove LOOP_EXPRs from gimple grammar comment.
        * tree-simple.h: Remove LOOP_EXPRs from gimple grammar comment.
        (build_and_jump): Declare.
        (build_and_jump): Declare.
        * tree-ssa.c (remove_annotations_r): Don't handle LOOP_EXPRs.
        * tree-ssa.c (remove_annotations_r): Don't handle LOOP_EXPRs.
2003-08-29  Daniel Berlin  
2003-08-29  Daniel Berlin  
        * opts.c (decode_options): Turn on SSAPRE by default.
        * opts.c (decode_options): Turn on SSAPRE by default.
2003-08-29  Jason Merrill  
2003-08-29  Jason Merrill  
        * builtins.c (simplify_builtin): Make sure that the replacement
        * builtins.c (simplify_builtin): Make sure that the replacement
        has the same type as the original expression.
        has the same type as the original expression.
        (simplify_builtin_strpbrk): Fix type of COMPOUND_EXPR.
        (simplify_builtin_strpbrk): Fix type of COMPOUND_EXPR.
        (simplify_builtin_strncpy, simplify_builtin_memcmp): Likewise.
        (simplify_builtin_strncpy, simplify_builtin_memcmp): Likewise.
        (simplify_builtin_strncmp, simplify_builtin_strncat): Likewise.
        (simplify_builtin_strncmp, simplify_builtin_strncat): Likewise.
        (simplify_builtin_strspn, simplify_builtin_strcspn): Likewise.
        (simplify_builtin_strspn, simplify_builtin_strcspn): Likewise.
        (simplify_builtin_fputs, simplify_builtin_sprintf): Likewise.
        (simplify_builtin_fputs, simplify_builtin_sprintf): Likewise.
2003-08-28  Zdenek Dvorak  
2003-08-28  Zdenek Dvorak  
        * builtins.c (expand_builtin): Expand BUILT_IN_STACK_SAVE and
        * builtins.c (expand_builtin): Expand BUILT_IN_STACK_SAVE and
        BUILT_IN_STACK_RESTORE.
        BUILT_IN_STACK_RESTORE.
        * builtins.def (BUILT_IN_STACK_SAVE, BUILT_IN_STACK_RESTORE): New.
        * builtins.def (BUILT_IN_STACK_SAVE, BUILT_IN_STACK_RESTORE): New.
        * gimplify.c (build_stack_save_restore): New functions.
        * gimplify.c (build_stack_save_restore): New functions.
        (struct gimplify_ctx): New field save_stack.
        (struct gimplify_ctx): New field save_stack.
        (gimplify_bind_expr, gimplify_call_expr): Arrange save of stack on
        (gimplify_bind_expr, gimplify_call_expr): Arrange save of stack on
        BIND_EXPR entry and restore on exits.
        BIND_EXPR entry and restore on exits.
        * stmt.c (expand_stack_alloc): Saving of stack removed.
        * stmt.c (expand_stack_alloc): Saving of stack removed.
        (expand_stack_save, expand_stack_restore): New.
        (expand_stack_save, expand_stack_restore): New.
        * tree.h (expand_stack_save, expand_stack_restore): Declare.
        * tree.h (expand_stack_save, expand_stack_restore): Declare.
2003-08-28  Diego Novillo  
2003-08-28  Diego Novillo  
        * tree-dfa.c (add_vdef): Check for duplicate voperands first.
        * tree-dfa.c (add_vdef): Check for duplicate voperands first.
        Handle SSA_NAME in voperands.
        Handle SSA_NAME in voperands.
        (add_vuse): Likewise.
        (add_vuse): Likewise.
2003-08-27  Diego Novillo  
2003-08-27  Diego Novillo  
        * tree-flow.h (var_ann_d): Convert is_in_va_arg_expr into a
        * tree-flow.h (var_ann_d): Convert is_in_va_arg_expr into a
        bitfield.
        bitfield.
2003-08-27  Daniel Berlin  
2003-08-27  Daniel Berlin  
        * tree-ssa-pre.c: Update comments to reflect reality.
        * tree-ssa-pre.c: Update comments to reflect reality.
        (insert_one_operand): Remove #if'0d code.
        (insert_one_operand): Remove #if'0d code.
2003-08-27  Zdenek Dvorak  
2003-08-27  Zdenek Dvorak  
        * gcov.c (typedef struct arc_info): New field cs_count.
        * gcov.c (typedef struct arc_info): New field cs_count.
        (accumulate_line_counts): Find cycles correctly.
        (accumulate_line_counts): Find cycles correctly.
2003-08-27  Daniel Berlin  
2003-08-27  Daniel Berlin  
        * tree-ssa-pre.c (compute_du_info): Move #if ENABLE_CHECKING up one
        * tree-ssa-pre.c (compute_du_info): Move #if ENABLE_CHECKING up one
        line.
        line.
2003-08-27  Daniel Berlin  
2003-08-27  Daniel Berlin  
        * tree.h (struct ephi_arg_d): New structure.
        * tree.h (struct ephi_arg_d): New structure.
        (struct eref_common): Remove non-used members, move some members
        (struct eref_common): Remove non-used members, move some members
        elsewhere.
        elsewhere.
        (struct ephi_node): Ditto.
        (struct ephi_node): Ditto.
        * tree-optimize.c (optimize_function_tree): Move PRE before DCE.
        * tree-optimize.c (optimize_function_tree): Move PRE before DCE.
        * tree.c (tree_size): use sizeof (struct ephi_arg_d) for ephi's.
        * tree.c (tree_size): use sizeof (struct ephi_arg_d) for ephi's.
        * tree-pretty-print.c (dump_generic_node): Re-teach to pretty
        * tree-pretty-print.c (dump_generic_node): Re-teach to pretty
        print euses/ephis/etc given new structures, members, and
        print euses/ephis/etc given new structures, members, and
        relationships.
        relationships.
        * tree-ssa-pre.c (fixup_domchildren): Removed.
        * tree-ssa-pre.c (fixup_domchildren): Removed.
        (a_dom_b): Ditto.
        (a_dom_b): Ditto.
        (calculate_preorder): Ditto.
        (calculate_preorder): Ditto.
        (defs_match_p): Ditto.
        (defs_match_p): Ditto.
        (defs_y_dom_x): Ditto.
        (defs_y_dom_x): Ditto.
        (compute_can_be_avail): Ditto.
        (compute_can_be_avail): Ditto.
        (reset_can_be_avail): Ditto.
        (reset_can_be_avail): Ditto.
        (reset_later): Ditto.
        (reset_later): Ditto.
        (compute_later): Ditto.
        (compute_later): Ditto.
        (repair_*): Ditto.
        (repair_*): Ditto.
        (set_replacement): Ditto.
        (set_replacement): Ditto.
        (remove_ephi): Ditto.
        (remove_ephi): Ditto.
        (set_expruse_def): Ditto.
        (set_expruse_def): Ditto.
        (occ_compare): Ditto.
        (occ_compare): Ditto.
        (defs_hash_expr): Ditto.
        (defs_hash_expr): Ditto.
        (compute_dt_preorder): Ditto
        (compute_dt_preorder): Ditto
        (search_dt_preorder): Ditto.
        (search_dt_preorder): Ditto.
        (ephi_operand_for_pred): Ditto.
        (ephi_operand_for_pred): Ditto.
        (injured_ephi_operand): Ditto.
        (injured_ephi_operand): Ditto.
        (compute_stops): New function.
        (compute_stops): New function.
        (occ_identical_to): Ditto.
        (occ_identical_to): Ditto.
        (require_phi): Ditto.
        (require_phi): Ditto.
        (do_ephi_df_search_1): Ditto.
        (do_ephi_df_search_1): Ditto.
        (do_ephi_df_search): Ditto.
        (do_ephi_df_search): Ditto.
        (any_operand_injured): Ditto.
        (any_operand_injured): Ditto.
        (compute_du_info): Ditto.
        (compute_du_info): Ditto.
        (add_ephi_use): Ditto.
        (add_ephi_use): Ditto.
        (insert_one_operand): Ditto.
        (insert_one_operand): Ditto.
        (add_ephi_pred): Ditto.
        (add_ephi_pred): Ditto.
        (created_phi_preds): New bitmap.
        (created_phi_preds): New bitmap.
        (dfn) Removed static variable.
        (dfn) Removed static variable.
        (idom_of_ephi): Ditto.
        (idom_of_ephi): Ditto.
        (avdefs): Move into expr_info).
        (avdefs): Move into expr_info).
        (struct ephi_use_entry): New structure for EPHI uses.
        (struct ephi_use_entry): New structure for EPHI uses.
        (struct ephi_df_search): New structure for depth first searchs.
        (struct ephi_df_search): New structure for depth first searchs.
        (cant_be_avail_search): Implementation of structure for
        (cant_be_avail_search): Implementation of structure for
        cant_be_avail search.
        cant_be_avail search.
        (stops_search): Ditto for stops.
        (stops_search): Ditto for stops.
        (replacing_search): Ditto for replacing_search.
        (replacing_search): Ditto for replacing_search.
        (do_proper_save): Arguments changed, callers updated.
        (do_proper_save): Arguments changed, callers updated.
        (create_ephi_node): Use sizeof (struct ephi_arg_d).
        (create_ephi_node): Use sizeof (struct ephi_arg_d).
        (ephi_has_bottom): Rewrite for updated ephi-pred handling.
        (ephi_has_bottom): Rewrite for updated ephi-pred handling.
        (ephi_will_be_avail): Rewrite in terms of CANT_BE_AVAIL and STOPS.
        (ephi_will_be_avail): Rewrite in terms of CANT_BE_AVAIL and STOPS.
        (expr_phi_insertion): Remove dead code.
        (expr_phi_insertion): Remove dead code.
        Update for new flags.
        Update for new flags.
        (insert_occ_in_preorder_dt_order_1): Only insert one ephi-pred per
        (insert_occ_in_preorder_dt_order_1): Only insert one ephi-pred per
        block.
        block.
        Fix exit occurence handling.
        Fix exit occurence handling.
        (rename_1): Remove occs stuff.
        (rename_1): Remove occs stuff.
        Update for new ephi-pred handling.
        Update for new ephi-pred handling.
        (reset_down_safe): Update for new ephi-pred handling.
        (reset_down_safe): Update for new ephi-pred handling.
        (compute_down_safe): Ditto.
        (compute_down_safe): Ditto.
        (can_insert): Ditto.
        (can_insert): Ditto.
        (insert_one_operand): Split out from finalize_1.
        (insert_one_operand): Split out from finalize_1.
        (finalize_1): Update for new ephi-pred handling.
        (finalize_1): Update for new ephi-pred handling.
        Only insert non-pointless, will-be-avail phis, rather than *all*
        Only insert non-pointless, will-be-avail phis, rather than *all*
        ephis.
        ephis.
        (get_temp): New function. Hand us the right temporary for a given
        (get_temp): New function. Hand us the right temporary for a given
        EPHI/EUSE.
        EPHI/EUSE.
        (code_motion): Use EREF_TEMP again, now that we can do it
        (code_motion): Use EREF_TEMP again, now that we can do it
        properly.
        properly.
2003-08-26  Zdenek Dvorak  
2003-08-26  Zdenek Dvorak  
        * builtins.c (expand_builtin): Handle STACK_ALLOC.
        * builtins.c (expand_builtin): Handle STACK_ALLOC.
        * builtins.def (BUILT_IN_STACK_ALLOC): New.
        * builtins.def (BUILT_IN_STACK_ALLOC): New.
        * c-simplify.c (gimplify_decl_stmt, c_gimplify_stmt,
        * c-simplify.c (gimplify_decl_stmt, c_gimplify_stmt,
        gimplify_compound_literal_expr): Arrange explicit stack allocation.
        gimplify_compound_literal_expr): Arrange explicit stack allocation.
        * expr.c (expand_expr): Handle deferred variables.
        * expr.c (expand_expr): Handle deferred variables.
        * stmt.c (expand_stack_alloc): New.
        * stmt.c (expand_stack_alloc): New.
        * tree-simple.c (is_gimple_val): Prevent ADDR_EXPRs of vla's from
        * tree-simple.c (is_gimple_val): Prevent ADDR_EXPRs of vla's from
        being reduced.
        being reduced.
        * tree.h (expand_stack_alloc): Declare.
        * tree.h (expand_stack_alloc): Declare.
2003-08-26  Zdenek Dvorak  
2003-08-26  Zdenek Dvorak  
        * tree-ssa.c (build_dominator_tree): Use FOR_EACH_BB.
        * tree-ssa.c (build_dominator_tree): Use FOR_EACH_BB.
2003-08-26  Jason Merrill  
2003-08-26  Jason Merrill  
        * tree-simple.c (is_gimple_val): Also disallow memory vars.
        * tree-simple.c (is_gimple_val): Also disallow memory vars.
2003-08-25  Zdenek Dvorak  
2003-08-25  Zdenek Dvorak  
        * integrate.c (copy_decl_for_inlining): Reset DECL_TOO_LATE.
        * integrate.c (copy_decl_for_inlining): Reset DECL_TOO_LATE.
2003-08-25  Zdenek Dvorak  
2003-08-25  Zdenek Dvorak  
        * tree-ssa-dom.c (optimize_block): Handle empty source block.
        * tree-ssa-dom.c (optimize_block): Handle empty source block.
        * tree-ssa-dom.c (optimize_block):  Handle case when dominance
        * tree-ssa-dom.c (optimize_block):  Handle case when dominance
        tree children have also other sucessors.  Add dump to jump
        tree children have also other sucessors.  Add dump to jump
        threading.
        threading.
2003-08-25  Jason Merrill  
2003-08-25  Jason Merrill  
        * c-simplify.c (mark_labels_r): New fn.
        * c-simplify.c (mark_labels_r): New fn.
        (gimplify_decl_stmt): Use it to mark labels in static initializers.
        (gimplify_decl_stmt): Use it to mark labels in static initializers.
        * tree-simple.c (is_gimple_initializer): Remove.
        * tree-simple.c (is_gimple_initializer): Remove.
        (is_gimple_reg_type): New fn.
        (is_gimple_reg_type): New fn.
        (is_gimple_reg): Use it.  Handle SSA_NAMEs properly.
        (is_gimple_reg): Use it.  Handle SSA_NAMEs properly.
        * tree-simple.h: Adjust.
        * tree-simple.h: Adjust.
        * gimplify.c (gimplify_expr) : Do nothing here.
        * gimplify.c (gimplify_expr) : Do nothing here.
        * gimplify.c (create_tmp_var): Set DECL_IGNORED_P.
        * gimplify.c (create_tmp_var): Set DECL_IGNORED_P.
        * tree-inline.c (initialize_inlined_parameters): Improve error
        * tree-inline.c (initialize_inlined_parameters): Improve error
        recovery.
        recovery.
        * gimplify.c (gimplify_boolean_expr): Just replace with a COND_EXPR.
        * gimplify.c (gimplify_boolean_expr): Just replace with a COND_EXPR.
2003-08-25  Diego Novillo  
2003-08-25  Diego Novillo  
        * tree-dfa.c (get_expr_operands): Don't create shared operands when
        * tree-dfa.c (get_expr_operands): Don't create shared operands when
        folding *&VAR expressions.
        folding *&VAR expressions.
2003-08-24  Diego Novillo  
2003-08-24  Diego Novillo  
        * tree-flow.h (struct var_ann_d): Add field default_def.
        * tree-flow.h (struct var_ann_d): Add field default_def.
        (widen_bitfield): Declare.
        (widen_bitfield): Declare.
        (set_default_def): Declare.
        (set_default_def): Declare.
        (default_def): Declare.
        (default_def): Declare.
        * tree-flow-inline.h (set_default_def): New inline function.
        * tree-flow-inline.h (set_default_def): New inline function.
        (default_def): New inline function.
        (default_def): New inline function.
        * tree-dfa.c (dump_variable): Display default_def, if set.
        * tree-dfa.c (dump_variable): Display default_def, if set.
        * tree-simple.c (is_gimple_reg): Check for DECL_P before checking
        * tree-simple.c (is_gimple_reg): Check for DECL_P before checking
        for DECL_EXTERNAL.
        for DECL_EXTERNAL.
        * tree-ssa-dom.c (add_expr_propagated_p): Remove.  Update all
        * tree-ssa-dom.c (add_expr_propagated_p): Remove.  Update all
        users.
        users.
        (find_new_vars_to_rename): New local function.
        (find_new_vars_to_rename): New local function.
        (tree_ssa_dominator_optimize): Add new argument vars_to_rename.
        (tree_ssa_dominator_optimize): Add new argument vars_to_rename.
        Change return type to void.  Update all users.
        Change return type to void.  Update all users.
        (optimize_block): Add new argument vars_to_rename.  Update all
        (optimize_block): Add new argument vars_to_rename.  Update all
        users.
        users.
        If the call to optimize_stmt returns true, add the statement to the
        If the call to optimize_stmt returns true, add the statement to the
        list of statements to re-scan for operands.
        list of statements to re-scan for operands.
        After optimizing the block and its dominator children, call
        After optimizing the block and its dominator children, call
        find_new_vars_to_rename for every statement that may have had new
        find_new_vars_to_rename for every statement that may have had new
        symbols exposed.
        symbols exposed.
        (optimize_stmt): Change return type to bool.  Return true if the
        (optimize_stmt): Change return type to bool.  Return true if the
        statement may have had new symbols exposed by optimization.
        statement may have had new symbols exposed by optimization.
        Add a sanity check for the value returned by lookup_avail_expr.
        Add a sanity check for the value returned by lookup_avail_expr.
        Create equivalences for more memory stores, not just the ones done
        Create equivalences for more memory stores, not just the ones done
        via INDIRECT_REF expressions.
        via INDIRECT_REF expressions.
        Call widen_bitfield when optimizing stores to bitfields.
        Call widen_bitfield when optimizing stores to bitfields.
        (lookup_avail_expr): Reformat comment.
        (lookup_avail_expr): Reformat comment.
        * tree-ssa.c (rewrite_into_ssa): Remove local variable
        * tree-ssa.c (rewrite_into_ssa): Remove local variable
        addr_expr_propagated_p.
        addr_expr_propagated_p.
        Clear out vars_to_rename before running dominator optimizations.
        Clear out vars_to_rename before running dominator optimizations.
        (check_for_new_variables): Remove.
        (check_for_new_variables): Remove.
        (rewrite_stmt): Always register new definitions and virtual
        (rewrite_stmt): Always register new definitions and virtual
        definitions.
        definitions.
        (register_new_def): Update comment.
        (register_new_def): Update comment.
        (get_reaching_def): Update the default_def field for the variable
        (get_reaching_def): Update the default_def field for the variable
        if it didn't have a reaching definition.
        if it didn't have a reaching definition.
        * tree-ssa-ccp.c (widen_bitfield): Declare it extern.
        * tree-ssa-ccp.c (widen_bitfield): Declare it extern.
2003-08-23  Zdenek Dvorak  
2003-08-23  Zdenek Dvorak  
        * tree-cfg.c (bsi_next_in_bb): Work correctly when the block ends
        * tree-cfg.c (bsi_next_in_bb): Work correctly when the block ends
        with start of BIND_EXPR.
        with start of BIND_EXPR.
2003-08-23  Daniel Berlin  
2003-08-23  Daniel Berlin  
        * tree-alias-ander.c (andersen_op_assign): Fix to join the operands,
        * tree-alias-ander.c (andersen_op_assign): Fix to join the operands,
        the assign to the lhs.
        the assign to the lhs.
2003-08-23  Daniel Berlin  
2003-08-23  Daniel Berlin  
        * tree-alias-common.c (get_alias_var): Remove REFERENCE_EXPR.
        * tree-alias-common.c (get_alias_var): Remove REFERENCE_EXPR.
        (find_func_aliases): Fix some not quite right predicates, add ARRAY_REF
        (find_func_aliases): Fix some not quite right predicates, add ARRAY_REF
        handling.
        handling.
2003-08-22  Jeff Law  
2003-08-22  Jeff Law  
        * tree-dfa.c (compute_alias_sets): A memory tag used for stores can
        * tree-dfa.c (compute_alias_sets): A memory tag used for stores can
        not conflict with objects marked TREE_READONLY.
        not conflict with objects marked TREE_READONLY.
        * tree-ssa-ccp.c (fold_stmt): Optimize reads from constant strings.
        * tree-ssa-ccp.c (fold_stmt): Optimize reads from constant strings.
2003-08-22  Jason Merrill  
2003-08-22  Jason Merrill  
        * tree-simple.c: Total overhaul to only check forms and remove
        * tree-simple.c: Total overhaul to only check forms and remove
        unnecessary predicates.
        unnecessary predicates.
        (is_gimple_const): Accept function addresses here.
        (is_gimple_const): Accept function addresses here.
        Don't accept LABEL_DECL or RESULT_DECL.
        Don't accept LABEL_DECL or RESULT_DECL.
        (is_gimple_val): Accept EXC_PTR_EXPR here.
        (is_gimple_val): Accept EXC_PTR_EXPR here.
        (is_gimple_lvalue): Rename from is_gimple_modify_expr_lhs.
        (is_gimple_lvalue): Rename from is_gimple_modify_expr_lhs.
        Accept BIT_FIELD_REF, REALPART_EXPR and IMAGPART_EXPR here.
        Accept BIT_FIELD_REF, REALPART_EXPR and IMAGPART_EXPR here.
        (is_gimple_addr_expr_arg): Replace with former is_gimple_varname.
        (is_gimple_addr_expr_arg): Replace with former is_gimple_varname.
        (is_gimple_constructor_elt): Just check for CONSTRUCTOR.
        (is_gimple_constructor_elt): Just check for CONSTRUCTOR.
        (is_gimple_initializer): Just hand off to is_gimple_rhs.
        (is_gimple_initializer): Just hand off to is_gimple_rhs.
        (is_gimple_rhs): Recognize most expressions here.
        (is_gimple_rhs): Recognize most expressions here.
        (is_gimple_variable): New fn.
        (is_gimple_variable): New fn.
        (is_gimple_id): Use it.  Now static.
        (is_gimple_id): Use it.  Now static.
        (is_gimple_reg): New fn.
        (is_gimple_reg): New fn.
        (is_gimple_cast): Replace with former is_gimple_cast_op.
        (is_gimple_cast): Replace with former is_gimple_cast_op.
        (is_gimple_constructor, is_gimple_expr): Remove.
        (is_gimple_constructor, is_gimple_expr): Remove.
        (is_gimple_modify_expr, is_gimple_relop): Remove.
        (is_gimple_modify_expr, is_gimple_relop): Remove.
        (is_gimple_binary_expr, is_gimple_unary_expr): Remove.
        (is_gimple_binary_expr, is_gimple_unary_expr): Remove.
        (is_gimple_call_expr, is_gimple_arglist): Remove.
        (is_gimple_call_expr, is_gimple_arglist): Remove.
        (is_gimple_compound_lval, is_gimple_arrayref): Remove.
        (is_gimple_compound_lval, is_gimple_arrayref): Remove.
        (is_gimple_compref, is_gimple_exprseq): Remove.
        (is_gimple_compref, is_gimple_exprseq): Remove.
        (is_gimplifiable_builtin): Remove.
        (is_gimplifiable_builtin): Remove.
        * tree-simple.h: Adjust.
        * tree-simple.h: Adjust.
        * gimplify.c (gimplify_conversion): Break out from gimplify_expr.
        * gimplify.c (gimplify_conversion): Break out from gimplify_expr.
        (gimplify_expr): Use is_gimple_reg predicate to force a temp.
        (gimplify_expr): Use is_gimple_reg predicate to force a temp.
        : Use gimplify_compound_lval.
        : Use gimplify_compound_lval.
        : Likewise.
        : Likewise.
        : Use is_gimple_reg predicate.
        : Use is_gimple_reg predicate.
        : Use new gimplify_minimax_expr.
        : Use new gimplify_minimax_expr.
        : Reject.
        : Reject.
        (gimplify_tree_list, gimplify_component_ref): Remove.
        (gimplify_tree_list, gimplify_component_ref): Remove.
        (gimplify_compound_lval): Include REALPART_EXPR and IMAGPART_EXPR.
        (gimplify_compound_lval): Include REALPART_EXPR and IMAGPART_EXPR.
        (gimplify_component_ref): Remove.
        (gimplify_component_ref): Remove.
        (gimplify_call_expr): Handle non-gimplifiable builtins and walking
        (gimplify_call_expr): Handle non-gimplifiable builtins and walking
        the argument list here.
        the argument list here.
        (gimplify_tree_list): Remove.
        (gimplify_tree_list): Remove.
        (gimplify_addr_expr): Use fb_either.
        (gimplify_addr_expr): Use fb_either.
        * tree-simple.h: Adjust.
        * tree-simple.h: Adjust.
        * tree-alias-common.c (find_func_aliases): Update use of predicates.
        * tree-alias-common.c (find_func_aliases): Update use of predicates.
2003-08-21  Andrew Pinski  
2003-08-21  Andrew Pinski  
        * tree-ssa.c (tree_ssa_useless_type_conversion): Check also the
        * tree-ssa.c (tree_ssa_useless_type_conversion): Check also the
        precision of the type to make sure they are really useless type
        precision of the type to make sure they are really useless type
        conversions.
        conversions.
2003-08-21  Diego Novillo  
2003-08-21  Diego Novillo  
        * tree-dump.c (dequeue_and_dump): Handle 'r' and 's' code classes.
        * tree-dump.c (dequeue_and_dump): Handle 'r' and 's' code classes.
2003-08-21  Zdenek Dvorak  
2003-08-21  Zdenek Dvorak  
        * c-pretty-print.c (print_c_tree): Create new pp object.
        * c-pretty-print.c (print_c_tree): Create new pp object.
2003-08-21  Zdenek Dvorak  
2003-08-21  Zdenek Dvorak  
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Don't free hash tables
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Don't free hash tables
        before statistics are made from them.
        before statistics are made from them.
        * tree-ssa.c (rewrite_into_ssa): Ditto.
        * tree-ssa.c (rewrite_into_ssa): Ditto.
2003-08-21  Jason Merrill  
2003-08-21  Jason Merrill  
        * tree-inline.c (copy_body_r): Don't convert when stripping &*.
        * tree-inline.c (copy_body_r): Don't convert when stripping &*.
        Fix thinko in stripping *&.
        Fix thinko in stripping *&.
2003-08-21  Diego Novillo  
2003-08-21  Diego Novillo  
            Zdenek Dvorak  
            Zdenek Dvorak  
        * tree-cfg.c (stmt_starts_bb_p): Nonlocal and computed GOTO targets
        * tree-cfg.c (stmt_starts_bb_p): Nonlocal and computed GOTO targets
        always start a new block.
        always start a new block.
2003-08-20  Jason Merrill  
2003-08-20  Jason Merrill  
        * tree-pretty-print.c (dump_generic_node): Just print ""
        * tree-pretty-print.c (dump_generic_node): Just print ""
        for the RESULT_DECL.
        for the RESULT_DECL.
        * c-simplify.c (make_type_writable, mostly_copy_tree_r): Remove.
        * c-simplify.c (make_type_writable, mostly_copy_tree_r): Remove.
        (deep_copy_list, deep_copy_node): Remove.
        (deep_copy_list, deep_copy_node): Remove.
        * expr.c (expand_expr): Don't check for 'r' or 's' if we're
        * expr.c (expand_expr): Don't check for 'r' or 's' if we're
        checking IS_EXPR_CODE_CLASS.
        checking IS_EXPR_CODE_CLASS.
        * tree-dfa.c (may_access_global_mem_p): Likewise.
        * tree-dfa.c (may_access_global_mem_p): Likewise.
        * tree-browser.c (browse_tree): Likewise.
        * tree-browser.c (browse_tree): Likewise.
        * tree-ssa-pre.c (defs_hash_expr): Likewise.
        * tree-ssa-pre.c (defs_hash_expr): Likewise.
        * gimplify.c (gimplify_expr): Likewise.
        * gimplify.c (gimplify_expr): Likewise.
        (internal_get_tmp_var): Only copy TREE_LOCUS from an expr.
        (internal_get_tmp_var): Only copy TREE_LOCUS from an expr.
        (mostly_copy_tree_r): Ignore decls here.
        (mostly_copy_tree_r): Ignore decls here.
2003-08-20  Diego Novillo  
2003-08-20  Diego Novillo  
        * c-pretty-print.c: Discard.  Replace with same file from
        * c-pretty-print.c: Discard.  Replace with same file from
        mainline.  Update all users.
        mainline.  Update all users.
        (print_c_tree): New function.
        (print_c_tree): New function.
        * c-pretty-print.h (print_c_tree): Declare.
        * c-pretty-print.h (print_c_tree): Declare.
        * tree-pretty-print.c: Update to use new pp_* primitives.
        * tree-pretty-print.c: Update to use new pp_* primitives.
        * c-simplify.c: Include c-pretty-print.h.
        * c-simplify.c: Include c-pretty-print.h.
        * Makefile.in (c-simplify.o): Add dependency on $(C_PRETTY_PRINT_H).
        * Makefile.in (c-simplify.o): Add dependency on $(C_PRETTY_PRINT_H).
2003-08-20  Roger Sayle  
2003-08-20  Roger Sayle  
        * c-common.h (enum c_tree_index): Delete CTI_SIGNED_SIZE_TYPE.
        * c-common.h (enum c_tree_index): Delete CTI_SIGNED_SIZE_TYPE.
        (signed_size_type_node): No longer a member of c_global_trees.
        (signed_size_type_node): No longer a member of c_global_trees.
        * tree.h (enum tree_index): New member TI_SIGNED_SIZE_TYPE here.
        * tree.h (enum tree_index): New member TI_SIGNED_SIZE_TYPE here.
        (signed_size_type_node): Moved, now a member of global_trees.
        (signed_size_type_node): Moved, now a member of global_trees.
2003-08-20  Zdenek Dvorak  
2003-08-20  Zdenek Dvorak  
        * tree-ssa-dom.c (optimize_block): Thread jump into empty
        * tree-ssa-dom.c (optimize_block): Thread jump into empty
        block correctly.
        block correctly.
        * tree-cfg.c (linearize_cond_expr): Don't merge blocks if the
        * tree-cfg.c (linearize_cond_expr): Don't merge blocks if the
        later has other predecessors.
        later has other predecessors.
2003-08-19  Jason Merrill  
2003-08-19  Jason Merrill  
        * c-typeck.c (build_array_ref): Also build ARRAY_REFs from
        * c-typeck.c (build_array_ref): Also build ARRAY_REFs from
        INDIRECT_REFs of ARRAY_TYPE.
        INDIRECT_REFs of ARRAY_TYPE.
        * tree-ssa.c (tree_ssa_useless_type_conversion): Also strip
        * tree-ssa.c (tree_ssa_useless_type_conversion): Also strip
        conversions between pointer and reference types.
        conversions between pointer and reference types.
        * tree-dfa.c (get_stmt_operands): Just mark non-GIMPLE statements
        * tree-dfa.c (get_stmt_operands): Just mark non-GIMPLE statements
        as unmodified.
        as unmodified.
        (find_referenced_vars): So we don't need to mark them here.
        (find_referenced_vars): So we don't need to mark them here.
        * tree-inline.c (inline_data): Add retvar field.
        * tree-inline.c (inline_data): Add retvar field.
        (declare_return_variable): Set it.
        (declare_return_variable): Set it.
        (remap_decls): Use it.
        (remap_decls): Use it.
        (expand_call_inline): Tweak.
        (expand_call_inline): Tweak.
2003-08-19  Zdenek Dvorak  
2003-08-19  Zdenek Dvorak  
        * cfg.c (dump_edge_info): Add name for EDGE_LOOP_EXIT flag.
        * cfg.c (dump_edge_info): Add name for EDGE_LOOP_EXIT flag.
2003-08-19  Zdenek Dvorak  
2003-08-19  Zdenek Dvorak  
        * tree-flow.h (struct var_ann_d): New field scope.
        * tree-flow.h (struct var_ann_d): New field scope.
        (struct stmt_ann_d): New field scope.
        (struct stmt_ann_d): New field scope.
        (propagate_copy): Declaration changed.
        (propagate_copy): Declaration changed.
        (fixup_var_scope): Declare.
        (fixup_var_scope): Declare.
        * tree-cfg.c (make_blocks, make_cond_expr_blocks,
        * tree-cfg.c (make_blocks, make_cond_expr_blocks,
        make_catch_expr_blocks, make_eh_filter_expr_blocks,
        make_catch_expr_blocks, make_eh_filter_expr_blocks,
        make_try_expr_blocks, make_loop_expr_blocks, make_switch_expr_blocks,
        make_try_expr_blocks, make_loop_expr_blocks, make_switch_expr_blocks,
        make_bind_expr_blocks, build_tree_cfg): Assign variables and statements
        make_bind_expr_blocks, build_tree_cfg): Assign variables and statements
        to scopes.
        to scopes.
        (assign_vars_to_scope): New.
        (assign_vars_to_scope): New.
        * tree-ssa-copyprop.c (move_var_to_scope): New.
        * tree-ssa-copyprop.c (move_var_to_scope): New.
        (copyprop_stmt): Pass scope of statement to propagate_copy.
        (copyprop_stmt): Pass scope of statement to propagate_copy.
        (propagate_copy): Assign variable to the right bind_expr.
        (propagate_copy): Assign variable to the right bind_expr.
        (fixup_var_scope): New.
        (fixup_var_scope): New.
        * tree-ssa-dom.c (optimize_stmt): Pass scope of statement to
        * tree-ssa-dom.c (optimize_stmt): Pass scope of statement to
        propagate_copy.
        propagate_copy.
2003-08-19  Daniel Berlin 
2003-08-19  Daniel Berlin 
        * tree-cfg (bsi_move_after): New function.
        * tree-cfg (bsi_move_after): New function.
        (bsi_move_before): New function.
        (bsi_move_before): New function.
        (bsi_move_to_bb_end): New function.
        (bsi_move_to_bb_end): New function.
        * tree-flow.h: Prototype new functions.
        * tree-flow.h: Prototype new functions.
2003-08-18  Daniel Berlin  
2003-08-18  Daniel Berlin  
        * tree-alias-ander.c: Remove doxygen markers.
        * tree-alias-ander.c: Remove doxygen markers.
        (eq_to_var): remove.
        (eq_to_var): remove.
        (simple_cmp): Add.
        (simple_cmp): Add.
        (throwaway_global): Add.
        (throwaway_global): Add.
        (andersen_same_points_to_set): Handle ignoring global var aliasing the
        (andersen_same_points_to_set): Handle ignoring global var aliasing the
        right way here.
        right way here.
        (andersen_may_alias): Use list_member to avoid stupid hack.
        (andersen_may_alias): Use list_member to avoid stupid hack.
        * tree-alias-common.c: Remove hacks for disabling global var aliasing.
        * tree-alias-common.c: Remove hacks for disabling global var aliasing.
2003-08-17  Zdenek Dvorak  
2003-08-17  Zdenek Dvorak  
        * tree.c (resize_phi_node): Initialize new entries.
        * tree.c (resize_phi_node): Initialize new entries.
2003-08-17  Jeff Law  
2003-08-17  Jeff Law  
        * tree-pretty-print.c (last_bb): Actually record the basic block,
        * tree-pretty-print.c (last_bb): Actually record the basic block,
        not just its index.
        not just its index.
        (maybe_init_pretty_print): Corresponding changes.
        (maybe_init_pretty_print): Corresponding changes.
        (dump_generic_node, dump_vops): Test the actual block pointers, not
        (dump_generic_node, dump_vops): Test the actual block pointers, not
        their indices.
        their indices.
        * tree-ssa-dom.c (optimize_block): Use equivalences from the
        * tree-ssa-dom.c (optimize_block): Use equivalences from the
        dominator tree walk to thread through conditional jumps at leafs in
        dominator tree walk to thread through conditional jumps at leafs in
        the dominator tree.
        the dominator tree.
        * tree-cfg.c (blocks_unreachable_p, remove_blocks): Use a bitmap
        * tree-cfg.c (blocks_unreachable_p, remove_blocks): Use a bitmap
        rather than a varray.
        rather than a varray.
        (REMOVE_ALL_STMTS, REMOVE_NO_STMTS): New defines for remove_bb.
        (REMOVE_ALL_STMTS, REMOVE_NO_STMTS): New defines for remove_bb.
        (REMOVE_NON_CONTROL_STMTS, REMOVE_CONTROL_STMTS): Likewise.
        (REMOVE_NON_CONTROL_STMTS, REMOVE_CONTROL_STMTS): Likewise.
        (remove_unreachable_block): Use find_contained_blocks rather
        (remove_unreachable_block): Use find_contained_blocks rather
        than find_subblocks.  If we have a COND_EXPR or SWITCH_EXPR which
        than find_subblocks.  If we have a COND_EXPR or SWITCH_EXPR which
        is unreachable, but which has reachable children clear out the
        is unreachable, but which has reachable children clear out the
        condition and request all non-control statements be removed
        condition and request all non-control statements be removed
        from the block.
        from the block.
        (remove_bb): Allow better control over what (if any) statements
        (remove_bb): Allow better control over what (if any) statements
        are removed.  All callers updated.
        are removed.  All callers updated.
        (find_subblocks): Remove.
        (find_subblocks): Remove.
        (find_contained_blocks): Handle statements with no associated
        (find_contained_blocks): Handle statements with no associated
        basic block.
        basic block.
2003-08-15  Andrew Pinski 
2003-08-15  Andrew Pinski 
        * objc/objc-lang.c (LANG_HOOKS_GIMPLIFY_EXPR): Define
        * objc/objc-lang.c (LANG_HOOKS_GIMPLIFY_EXPR): Define
        as the c gimplifier.
        as the c gimplifier.
2003-08-15  Jeff Law  
2003-08-15  Jeff Law  
        * tree-cfg.c (cleanup_tree_cfg): Wipe out the dominator tree
        * tree-cfg.c (cleanup_tree_cfg): Wipe out the dominator tree
        if the number of basic blocks changes as a result of cfg cleanups.
        if the number of basic blocks changes as a result of cfg cleanups.
        * tree-flow.h (build_dominator_tree): Prototype.
        * tree-flow.h (build_dominator_tree): Prototype.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Build the dominator
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Build the dominator
        tree if it is not already available.
        tree if it is not already available.
        * tree-ssa.c (build_dominator_tree): New function.
        * tree-ssa.c (build_dominator_tree): New function.
        (rewrite_into_ssa): Use it.
        (rewrite_into_ssa): Use it.
        * gimplify.c (gimplify_expr, cases NOP_EXPR, CONVERT_EXPR): If a
        * gimplify.c (gimplify_expr, cases NOP_EXPR, CONVERT_EXPR): If a
        COMPONENT_REF is wrapped with a NOP_EXPR, then force the type of
        COMPONENT_REF is wrapped with a NOP_EXPR, then force the type of
        the COMPONENT_REF to match the accessed field.  Strip away
        the COMPONENT_REF to match the accessed field.  Strip away
        unnecessary type conversions and handle the case where all type
        unnecessary type conversions and handle the case where all type
        conversions were removed.
        conversions were removed.
        (case ARRAY_REF, COMPONENT_REF): Indicate to gimplify_array_ref
        (case ARRAY_REF, COMPONENT_REF): Indicate to gimplify_array_ref
        and gimplify_component_ref if we want an lvalue or not.
        and gimplify_component_ref if we want an lvalue or not.
        (gimplify_array_ref, gimplify_component_ref): Pass new argument
        (gimplify_array_ref, gimplify_component_ref): Pass new argument
        WANT_LVALUE through to gimplify_compound_lval.
        WANT_LVALUE through to gimplify_compound_lval.
        (gimplify_compound_lval): If we do not want an lvalue and the
        (gimplify_compound_lval): If we do not want an lvalue and the
        toplevel COMPONENT_REF's type does not match its field's type,
        toplevel COMPONENT_REF's type does not match its field's type,
        then wrap the COMPONENT_REF in a NOP_EXPR and force the
        then wrap the COMPONENT_REF in a NOP_EXPR and force the
        COMPONENT_REF's type to match its field's type.
        COMPONENT_REF's type to match its field's type.
        (gimplify_modify_expr): If the RHS is a CALL_EXPR and the LHS
        (gimplify_modify_expr): If the RHS is a CALL_EXPR and the LHS
        is not a gimple temporary, then force the RHS through a gimple
        is not a gimple temporary, then force the RHS through a gimple
        temporary, even if the call can not throw.
        temporary, even if the call can not throw.
        (create_tmp_var): Make sure not to lose the type's attributes
        (create_tmp_var): Make sure not to lose the type's attributes
        for the new variable.
        for the new variable.
        * tree-ssa.c (tree_ssa_useless_type_conversion): New function.
        * tree-ssa.c (tree_ssa_useless_type_conversion): New function.
        * tree-flow.h (tree_ssa_useless_type_conversion): Prototype.
        * tree-flow.h (tree_ssa_useless_type_conversion): Prototype.
        * tree-ssa-dom.c (optimize_stmt): Use tree_ssa_useless_type_conversion.
        * tree-ssa-dom.c (optimize_stmt): Use tree_ssa_useless_type_conversion.
        * tree-cfg.c (remove_useless_stmts_and_vars): Catch more
        * tree-cfg.c (remove_useless_stmts_and_vars): Catch more
        useless statements created during the out-of-ssa pass.
        useless statements created during the out-of-ssa pass.
2003-08-14  Jeff Law  
2003-08-14  Jeff Law  
        * tree-ssa-dom.c (optimize_block): Record equivalences created by
        * tree-ssa-dom.c (optimize_block): Record equivalences created by
        SWITCH_EXPRs.
        SWITCH_EXPRs.
        * tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of
        * tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of
        a RETURN_EXPR which contains an optimizable MODIFY_EXPR.
        a RETURN_EXPR which contains an optimizable MODIFY_EXPR.
        (lookup_avail_expr): Corresponding changes.
        (lookup_avail_expr): Corresponding changes.
        (avail_expr_hash, avail_expr_eq): Likewise.
        (avail_expr_hash, avail_expr_eq): Likewise.
        * tree-ssa-dom.c (optimize_stmt): Fix typo which prevented
        * tree-ssa-dom.c (optimize_stmt): Fix typo which prevented
        stores with more than one VDEF from creating useful equivalences.
        stores with more than one VDEF from creating useful equivalences.
        * tree-dfa.c (get_expr_operands): Do not special case *0;
        * tree-dfa.c (get_expr_operands): Do not special case *0;
        * fold-const.c (fold, case INDIRECT_REF): Revert last change.
        * fold-const.c (fold, case INDIRECT_REF): Revert last change.
2003-08-14  Diego Novillo  
2003-08-14  Diego Novillo  
        * tree-cfg.c (bsi_insert_on_edge_immediate): Only update the
        * tree-cfg.c (bsi_insert_on_edge_immediate): Only update the
        container for the head tree of the next block if the new statement
        container for the head tree of the next block if the new statement
        needs to be linked to it.
        needs to be linked to it.
2003-08-13  Jeff Law  
2003-08-13  Jeff Law  
        * fold-const.c (fold, case INDIRECT_REF): Optimize reads from
        * fold-const.c (fold, case INDIRECT_REF): Optimize reads from
        constant strings.
        constant strings.
        * tree-cfg.c (remove_useless_stmts_and_vars): For a COND_EXPR
        * tree-cfg.c (remove_useless_stmts_and_vars): For a COND_EXPR
        where the condition is a variable and the ELSE clause merely
        where the condition is a variable and the ELSE clause merely
        sets that variable to zero, remove the ELSE clause.
        sets that variable to zero, remove the ELSE clause.
        * tree-ssa-dom.c (optimize_stmt): Do not check the type of the
        * tree-ssa-dom.c (optimize_stmt): Do not check the type of the
        value returned by lookup_avail_expr.
        value returned by lookup_avail_expr.
2003-08-13  Daniel Berlin  
2003-08-13  Daniel Berlin  
        * tree-cfg.c (remove_stmt):  Add new argument saying whether to remove
        * tree-cfg.c (remove_stmt):  Add new argument saying whether to remove
        annotations and invalidate defs.  Update all callers
        annotations and invalidate defs.  Update all callers
        (remove_bsi_from_block): Moved from bsi_remove, argument added.
        (remove_bsi_from_block): Moved from bsi_remove, argument added.
        (bsi_remove): Made into wrapper for remove_bsi_from_block.
        (bsi_remove): Made into wrapper for remove_bsi_from_block.
2003-08-13  Zdenek Dvorak  
2003-08-13  Zdenek Dvorak  
        * tree-ssa-dom.c (optimize_stmt): Call get_stmt_operands.
        * tree-ssa-dom.c (optimize_stmt): Call get_stmt_operands.
2003-08-12  Jeff Law  
2003-08-12  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Record equivalences created
        * tree-ssa-dom.c (optimize_stmt): Record equivalences created
        by memory stores.
        by memory stores.
2003-08-12  Diego Novillo  
2003-08-12  Diego Novillo  
        * tree-cfg.c (find_insert_location): Handle other control
        * tree-cfg.c (find_insert_location): Handle other control
        statements that may be at the end of the block.
        statements that may be at the end of the block.
2003-08-12  Zdenek Dvorak  
2003-08-12  Zdenek Dvorak  
        * Makefile.in (tree-pretty-print.o): Add tree-iterator.h dependency.
        * Makefile.in (tree-pretty-print.o): Add tree-iterator.h dependency.
        * tree-pretty-print.c: Include tree-iterator.h.
        * tree-pretty-print.c: Include tree-iterator.h.
        (dump_generic_node): Avoid recursing into COMPOUND_EXPRs.
        (dump_generic_node): Avoid recursing into COMPOUND_EXPRs.
2003-08-12  Jeff Law  
2003-08-12  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Optimize ABS_EXPR when we know
        * tree-ssa-dom.c (optimize_stmt): Optimize ABS_EXPR when we know
        the sign of the source operand.
        the sign of the source operand.
        * tree-ssa-dom.c (optimize_stmt): Rewrite TRUNC_DIV_EXPR and
        * tree-ssa-dom.c (optimize_stmt): Rewrite TRUNC_DIV_EXPR and
        TRUNC_MOD_EXPR even if the LHS is not an SSA variable.  Do not
        TRUNC_MOD_EXPR even if the LHS is not an SSA variable.  Do not
        enter the new expression in the hash tables if !may_optimize_p.
        enter the new expression in the hash tables if !may_optimize_p.
        Also try GE_EXPR to see if this transformation is safe.
        Also try GE_EXPR to see if this transformation is safe.
        * tree-ssa-dom.c (optimize_stmt): Fix typo in last change which
        * tree-ssa-dom.c (optimize_stmt): Fix typo in last change which
        prevented recording equivalences created by IOR_EXPR.
        prevented recording equivalences created by IOR_EXPR.
        * tree-ssa-dom.c (optimize_stmt): Record that the destination of
        * tree-ssa-dom.c (optimize_stmt): Record that the destination of
        a MODIFY_EXPR nonzero if the RHS contains an IOR with a nonzero
        a MODIFY_EXPR nonzero if the RHS contains an IOR with a nonzero
        constant.  Turn DIV/MOD by a power of 2 into SHIFT/AND if we know
        constant.  Turn DIV/MOD by a power of 2 into SHIFT/AND if we know
        dividend is positive.
        dividend is positive.
2003-08-11  Jeff Law  
2003-08-11  Jeff Law  
        * fold-const.c (fold, cases NE_EXPR and EQ_EXPR): Fold equality
        * fold-const.c (fold, cases NE_EXPR and EQ_EXPR): Fold equality
        comparisons of non-weak symbol addresses against zero.
        comparisons of non-weak symbol addresses against zero.
        * tree-ssa-ccp.c (fold_stmt): Strip unnecessary NOP_EXPRs from
        * tree-ssa-ccp.c (fold_stmt): Strip unnecessary NOP_EXPRs from
        the folded result.
        the folded result.
        * gimplify.c (gimplify_expr, case INDIRECT_REF): Copy the base
        * gimplify.c (gimplify_expr, case INDIRECT_REF): Copy the base
        object into a temporary if it's in static memory or is addressable.
        object into a temporary if it's in static memory or is addressable.
2003-08-11  Steven Bosscher  
2003-08-11  Steven Bosscher  
        * tree-alias-common.h (struct tree_alias_ops): Add a semicolon, fix
        * tree-alias-common.h (struct tree_alias_ops): Add a semicolon, fix
        bootstrap.
        bootstrap.
2003-08-10  Daniel Berlin  
2003-08-10  Daniel Berlin  
        * tree-dfa.c (compute_may_aliases): Move points-to initialization from
        * tree-dfa.c (compute_may_aliases): Move points-to initialization from
        here.
        here.
        (find_referenced_vars): To here.
        (find_referenced_vars): To here.
        (get_memory_tag_for): Use new same_points_to_set function.
        (get_memory_tag_for): Use new same_points_to_set function.
        * tree-alias-common.h (struct tree_alias_ops): Remove doxygen markers.
        * tree-alias-common.h (struct tree_alias_ops): Remove doxygen markers.
        Add same_points_to_set function to struct.
        Add same_points_to_set function to struct.
        (same_points_to_set): New function.
        (same_points_to_set): New function.
        * tree-alias-common.c (we_created_global_var): A bit of magic to ignore
        * tree-alias-common.c (we_created_global_var): A bit of magic to ignore
        global var aliasing when we didn't create global var.  This will go
        global var aliasing when we didn't create global var.  This will go
        away soon
        away soon
        (same_points_to_set): New function.
        (same_points_to_set): New function.
        * tree-alias-andersen.c (struct andersen_alias_ops): Add
        * tree-alias-andersen.c (struct andersen_alias_ops): Add
        andersen_same_points_to_set.
        andersen_same_points_to_set.
        (andersen_same_points_to_set): New function. Return true if the two
        (andersen_same_points_to_set): New function. Return true if the two
        variables have the same points-to set.
        variables have the same points-to set.
        * opts.c (common_handle_option): Add "none" as a points-to option.
        * opts.c (common_handle_option): Add "none" as a points-to option.
2003-08-10  Paul Brook  
2003-08-10  Paul Brook  
        * doc/install.texi: Mention --enable-languages=f95.
        * doc/install.texi: Mention --enable-languages=f95.
2003-08-09  Daniel Berlin  
2003-08-09  Daniel Berlin  
        * tree-pretty-print.c (dump_vops): check bb->tree_annotations, not
        * tree-pretty-print.c (dump_vops): check bb->tree_annotations, not
        bb->aux.
        bb->aux.
2003-08-08  Daniel Berlin  
2003-08-08  Daniel Berlin  
        * tree-cfg.c (bsi_insert_on_edge_immediate): If there's only
        * tree-cfg.c (bsi_insert_on_edge_immediate): If there's only
        one statement in the block, and it's an empty statement, replace it.
        one statement in the block, and it's an empty statement, replace it.
2003-08-08  Jason Merrill  
2003-08-08  Jason Merrill  
        * c-decl.c (c_expand_body_1): Restore support for
        * c-decl.c (c_expand_body_1): Restore support for
        !keep_function_tree_in_gimple_form.
        !keep_function_tree_in_gimple_form.
        (finish_function, c_expand_deferred_function): Do TDI_inlined dump.
        (finish_function, c_expand_deferred_function): Do TDI_inlined dump.
        * gimplify.c (voidify_wrapper_expr): Set TREE_SIDE_EFFECTS on the
        * gimplify.c (voidify_wrapper_expr): Set TREE_SIDE_EFFECTS on the
        wrapper if we insert a MODIFY_EXPR.
        wrapper if we insert a MODIFY_EXPR.
2003-08-07  Diego Novillo  
2003-08-07  Diego Novillo  
        * Makefile.in (GTFILES): Add tree-ssa.c, tree-dfa.c and
        * Makefile.in (GTFILES): Add tree-ssa.c, tree-dfa.c and
        tree-ssa-ccp.c.
        tree-ssa-ccp.c.
        (gt-tree-ssa.h, gt-tree-dfa.h, gt-tree-ssa-ccp.h): Depend on
        (gt-tree-ssa.h, gt-tree-dfa.h, gt-tree-ssa-ccp.h): Depend on
        s-gtype.
        s-gtype.
        * tree-dfa.c (struct clobber_data_d): Remove.  Update all users.
        * tree-dfa.c (struct clobber_data_d): Remove.  Update all users.
        (struct alias_map_d): Mark for garbage collection.
        (struct alias_map_d): Mark for garbage collection.
        (struct walk_state): Add fields 'is_not_gimple' and
        (struct walk_state): Add fields 'is_not_gimple' and
        'is_va_arg_expr'.
        'is_va_arg_expr'.
        (clobber_vars_r): Remove.  Update all users.
        (clobber_vars_r): Remove.  Update all users.
        (get_stmt_operands): Abort if attempting to get operands from a
        (get_stmt_operands): Abort if attempting to get operands from a
        non-GIMPLE statement.
        non-GIMPLE statement.
        (get_expr_operands): Likewise.
        (get_expr_operands): Likewise.
        Do not force a virtual operand when scanning VA_ARG_EXPR.
        Do not force a virtual operand when scanning VA_ARG_EXPR.
        (add_stmt_operand): If the variable has hidden uses, mark the
        (add_stmt_operand): If the variable has hidden uses, mark the
        statement as having volatile operands and return.
        statement as having volatile operands and return.
        If the variable occurs inside a VA_ARG_EXPR, add it as a virtual
        If the variable occurs inside a VA_ARG_EXPR, add it as a virtual
        operand.
        operand.
        (add_immediate_use): Call VARRAY_TREE_INIT instead of
        (add_immediate_use): Call VARRAY_TREE_INIT instead of
        VARRAY_GENERIC_PTR_INIT.
        VARRAY_GENERIC_PTR_INIT.
        (dump_variable): Check is_in_va_arg_expr flag.
        (dump_variable): Check is_in_va_arg_expr flag.
        (compute_may_aliases): Move code to find variables ...
        (compute_may_aliases): Move code to find variables ...
        (find_referenced_vars): ... here.
        (find_referenced_vars): ... here.
        (find_vars_r): Abort if we find a non-GIMPLE expression
        (find_vars_r): Abort if we find a non-GIMPLE expression
        unexpectedly.
        unexpectedly.
        Mark variables found inside a VA_ARG_EXPR.
        Mark variables found inside a VA_ARG_EXPR.
        Do not scan arguments for non-GIMPLE CALL_EXPRs.
        Do not scan arguments for non-GIMPLE CALL_EXPRs.
        Remove local variable saved_is_store.
        Remove local variable saved_is_store.
        Reformat some code for readability.
        Reformat some code for readability.
        (add_referenced_var): If the variable is already marked as having
        (add_referenced_var): If the variable is already marked as having
        hidden uses, ignore it.
        hidden uses, ignore it.
        If the variable is found inside a non-GIMPLE expression, mark it.
        If the variable is found inside a non-GIMPLE expression, mark it.
        If the variable is found inside a VA_ARG_EXPR, mark it.
        If the variable is found inside a VA_ARG_EXPR, mark it.
        * tree-flow.h (struct var_ann_d): Add field is_in_va_arg_expr.
        * tree-flow.h (struct var_ann_d): Add field is_in_va_arg_expr.
        (find_referenced_vars): Declare.
        (find_referenced_vars): Declare.
        * tree-optimize.c (optimize_function_tree): Call
        * tree-optimize.c (optimize_function_tree): Call
        find_referenced_vars before computing may aliases.
        find_referenced_vars before computing may aliases.
        * tree-ssa-dce.c (need_to_preserve_store): Do not check if the
        * tree-ssa-dce.c (need_to_preserve_store): Do not check if the
        variable has hidden uses.
        variable has hidden uses.
        * tree-ssa-live.c (type_var_init): Likewise.
        * tree-ssa-live.c (type_var_init): Likewise.
        * tree-ssa-ccp.c (ssa_edges): Mark for garbage collection.
        * tree-ssa-ccp.c (ssa_edges): Mark for garbage collection.
        (tree_ssa_ccp): Use VARRAY_.*_EDGE calls to manipulate the varray
        (tree_ssa_ccp): Use VARRAY_.*_EDGE calls to manipulate the varray
        of CFG edges.
        of CFG edges.
        (add_control_edge): Likewise.
        (add_control_edge): Likewise.
        (initialize): Likewise.
        (initialize): Likewise.
        * tree-ssa.c (struct def_blocks_d): Mark for garbage collection.
        * tree-ssa.c (struct def_blocks_d): Mark for garbage collection.
        (struct var_value_d): Likewise.
        (struct var_value_d): Likewise.
        (def_blocks_free): Remove.  Update all users.
        (def_blocks_free): Remove.  Update all users.
        (rewrite_into_ssa): Do not specify free function when creating
        (rewrite_into_ssa): Do not specify free function when creating
        def_blocks and currdefs.
        def_blocks and currdefs.
        Call sbitmap_free instead of free.
        Call sbitmap_free instead of free.
        (mark_def_sites): Call sbitmap_free instead of free.
        (mark_def_sites): Call sbitmap_free instead of free.
        (set_def_block): Use GC allocation.
        (set_def_block): Use GC allocation.
        (set_livein_block): Likewise.
        (set_livein_block): Likewise.
        (insert_phi_nodes): Adjust name of varray def_maps when creating it.
        (insert_phi_nodes): Adjust name of varray def_maps when creating it.
        (insert_phis_for_deferred_variables): Remove call to BITMAP_XFREE.
        (insert_phis_for_deferred_variables): Remove call to BITMAP_XFREE.
        (insert_phi_nodes_for): Use GC allocation for phi_insertion_points.
        (insert_phi_nodes_for): Use GC allocation for phi_insertion_points.
        (init_tree_ssa): Remove typecast in call to memset.
        (init_tree_ssa): Remove typecast in call to memset.
        (set_value_for): Use GC allocation.
        (set_value_for): Use GC allocation.
        (get_def_blocks_for): Remove typecast in call to htab_find.
        (get_def_blocks_for): Remove typecast in call to htab_find.
        * varray.c (element): Add entry for struct edge_def *.
        * varray.c (element): Add entry for struct edge_def *.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_EDGE.
        * varray.h (enum varray_data_enum): Add VARRAY_DATA_EDGE.
        (union varray_data_tag): Add field of type struct edge_def *.
        (union varray_data_tag): Add field of type struct edge_def *.
        (VARRAY_EDGE_INIT): Define.
        (VARRAY_EDGE_INIT): Define.
        (VARRAY_EDGE): Define.
        (VARRAY_EDGE): Define.
        (VARRAY_PUSH_EDGE): Define.
        (VARRAY_PUSH_EDGE): Define.
        (VARRAY_TOP_EDGE): Define.
        (VARRAY_TOP_EDGE): Define.
2003-08-06  Diego Novillo  
2003-08-06  Diego Novillo  
        * tree-cfg.c (handle_switch_fallthru): Do not abort when the last
        * tree-cfg.c (handle_switch_fallthru): Do not abort when the last
        statement of the case block needs to be the last statement of the
        statement of the case block needs to be the last statement of the
        block.
        block.
        (find_insert_location): Fix typo.
        (find_insert_location): Fix typo.
2003-08-06  Steven Bosscher  
2003-08-06  Steven Bosscher  
        * tree-dfa.c (remove_phi_arg):  When the PHI no longer has
        * tree-dfa.c (remove_phi_arg):  When the PHI no longer has
        arguments, don't remove it here, but do so...
        arguments, don't remove it here, but do so...
        (remove_phi_arg_num): ...from here.
        (remove_phi_arg_num): ...from here.
2003-08-05  Jason Merrill  
2003-08-05  Jason Merrill  
        * gimplify.c (gimplify_cond_expr): Gimplify shortcut expansion in
        * gimplify.c (gimplify_cond_expr): Gimplify shortcut expansion in
        a conditional context.
        a conditional context.
        * tree-cfg.c (make_catch_expr_blocks): Don't change next_block_link.
        * tree-cfg.c (make_catch_expr_blocks): Don't change next_block_link.
        (make_eh_filter_expr_blocks): Likewise.
        (make_eh_filter_expr_blocks): Likewise.
        * tree-dfa.c (add_referenced_var): Static locals are call
        * tree-dfa.c (add_referenced_var): Static locals are call
        clobbered.
        clobbered.
2003-08-05  Steven Bosscher  
2003-08-05  Steven Bosscher  
        * tree-dfa.c (add_phi_arg): Allow PHI capacity to grow.
        * tree-dfa.c (add_phi_arg): Allow PHI capacity to grow.
        * tree-flow.h  (add_phi_arg): Adjust prototype.
        * tree-flow.h  (add_phi_arg): Adjust prototype.
        * tree-ssa-pre.c (code_motion): Adjust call.
        * tree-ssa-pre.c (code_motion): Adjust call.
        * tree-ssa.c (rewrite_block): Likewise.
        * tree-ssa.c (rewrite_block): Likewise.
        * tree.c (resize_phi_node): New function.
        * tree.c (resize_phi_node): New function.
        * tree.h (resize_phi_node): Add prototype.
        * tree.h (resize_phi_node): Add prototype.
2003-08-05  Jeff Law  
2003-08-05  Jeff Law  
        * tree-ssa-dom.c (optimize_block): Be more aggressive about
        * tree-ssa-dom.c (optimize_block): Be more aggressive about
        creating equivalences from PHI nodes.
        creating equivalences from PHI nodes.
        * tree-ssa-dom.c (optimize_stmt): Strip away certain NOP_EXPRs
        * tree-ssa-dom.c (optimize_stmt): Strip away certain NOP_EXPRs
        before determining if we have an equivalence to enter into
        before determining if we have an equivalence to enter into
        the const_and_copies table.
        the const_and_copies table.
        * tree-ssa-dce.c (remove_dead_stmts): Iterate backwards through the
        * tree-ssa-dce.c (remove_dead_stmts): Iterate backwards through the
        basic blocks removing dead statements.  Within each block iterate
        basic blocks removing dead statements.  Within each block iterate
        backwards through the statements removing those which are dead.
        backwards through the statements removing those which are dead.
        * tree-ssa-optimize.c (optimize_function_tree): Call
        * tree-ssa-optimize.c (optimize_function_tree): Call
        remove_useless_stmts_and_vars before building the flow graph.
        remove_useless_stmts_and_vars before building the flow graph.
        * tree-cfg.c (remove_useless_stmts_and_vars): Rename argument from
        * tree-cfg.c (remove_useless_stmts_and_vars): Rename argument from
        first_iteration to remove_unused_vars.
        first_iteration to remove_unused_vars.
        * tree-cfg.c (remove_unreachable_blocks): Remove blocks in reverse
        * tree-cfg.c (remove_unreachable_blocks): Remove blocks in reverse
        order.
        order.
        (remove_bb): Remove unwanted call to bsi_next.
        (remove_bb): Remove unwanted call to bsi_next.
        (bsi_remove): Refine code which removes useless COMPOUND_EXPRs to allow
        (bsi_remove): Refine code which removes useless COMPOUND_EXPRs to allow
        removal if one of the arms is not associated with a basic block.
        removal if one of the arms is not associated with a basic block.
        (remove_stmt): Improve check for testing when a basic block head/end
        (remove_stmt): Improve check for testing when a basic block head/end
        pointer needs to be updated when removing a COMPOUND_EXPR.
        pointer needs to be updated when removing a COMPOUND_EXPR.
        * tree-cfg.c (phi_alternatives_equal): New function.
        * tree-cfg.c (phi_alternatives_equal): New function.
        (linearize_cond_expr): Allow linearization if the PHI nodes at the
        (linearize_cond_expr): Allow linearization if the PHI nodes at the
        target have equivalent arguments for the incoming edges from the THEN
        target have equivalent arguments for the incoming edges from the THEN
        and ELSE clauses.
        and ELSE clauses.
        * tree-ssa-dce.c (mark_tree_necessary): Empty statements may be
        * tree-ssa-dce.c (mark_tree_necessary): Empty statements may be
        necessary.
        necessary.
        (process_worklist): Handle any incoming abnormal edges the first
        (process_worklist): Handle any incoming abnormal edges the first
        time a statement in each block becomes executable.
        time a statement in each block becomes executable.
        * tree-ssa-ccp.c (substitute_and_fold): Substitute known
        * tree-ssa-ccp.c (substitute_and_fold): Substitute known
        constants into PHI nodes.
        constants into PHI nodes.
2003-08-04  Sebastian Pop  
2003-08-04  Sebastian Pop  
        * basic-block.h: Declare bb_ann_d.
        * basic-block.h: Declare bb_ann_d.
        (basic_block_def): Add a field tree_annotations.
        (basic_block_def): Add a field tree_annotations.
        * cfg.c (entry_exit_blocks): Initialize tree_annotations to NULL.
        * cfg.c (entry_exit_blocks): Initialize tree_annotations to NULL.
        * cfghooks.c: Remove the definition of cfg_level.
        * cfghooks.c: Remove the definition of cfg_level.
        (rtl_register_cfg_hooks): Remove the initiallization of cfg_level.
        (rtl_register_cfg_hooks): Remove the initiallization of cfg_level.
        * cfghooks.h (cfg_hooks): Add cfgh_loop_optimizer_init, and
        * cfghooks.h (cfg_hooks): Add cfgh_loop_optimizer_init, and
        cfgh_loop_optimizer_finalize.
        cfgh_loop_optimizer_finalize.
        (loop_optimizer_init, loop_optimizer_finalize): New macros.
        (loop_optimizer_init, loop_optimizer_finalize): New macros.
        (cfg_level): Remove.
        (cfg_level): Remove.
        * cfgloop.h (loop_optimizer_init, loop_optimizer_finalize): Rename
        * cfgloop.h (loop_optimizer_init, loop_optimizer_finalize): Rename
        to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
        to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
        * cfgrtl.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        * cfgrtl.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
        Declare, and register them in rtl_cfg_hooks and cfg_layout_rtl_cfg_hook.
        Declare, and register them in rtl_cfg_hooks and cfg_layout_rtl_cfg_hook.
        * loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Rename
        * loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Rename
        to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.  Remove
        to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.  Remove
        the checks to cfg_level.
        the checks to cfg_level.
        * tree-cfg.c (block_tree_ann_obstack, first_block_tree_ann_obj): New.
        * tree-cfg.c (block_tree_ann_obstack, first_block_tree_ann_obj): New.
        (create_blocks_annotations, create_block_annotation,
        (create_blocks_annotations, create_block_annotation,
        free_blocks_annotations, clear_blocks_annotations): New functions.
        free_blocks_annotations, clear_blocks_annotations): New functions.
        (tree_loop_optimizer_init, tree_loop_optimizer_finalize): New
        (tree_loop_optimizer_init, tree_loop_optimizer_finalize): New
        functions.  Register them in tree_cfg_hooks.
        functions.  Register them in tree_cfg_hooks.
        (build_tree_cfg, dump_tree_bb, delete_tree_cfg, tree_split_edge): Use
        (build_tree_cfg, dump_tree_bb, delete_tree_cfg, tree_split_edge): Use
        create_blocks_annotations instead of alloc_aux_for_blocks,
        create_blocks_annotations instead of alloc_aux_for_blocks,
        create_block_annotation instead of alloc_aux_for_block,
        create_block_annotation instead of alloc_aux_for_block,
        .tree_annotations instead of .aux,
        .tree_annotations instead of .aux,
        free_blocks_annotations instead of free_aux_for_blocks.
        free_blocks_annotations instead of free_aux_for_blocks.
        (tree_register_cfg_hooks): Remove initialization of cfg_level.
        (tree_register_cfg_hooks): Remove initialization of cfg_level.
        * tree-flow-inline.h (bb_ann): Use .tree_annotations.
        * tree-flow-inline.h (bb_ann): Use .tree_annotations.
        * tree-flow.h: Update comment.
        * tree-flow.h: Update comment.
2003-08-04  Zdenek Dvorak  
2003-08-04  Zdenek Dvorak  
        * Makefile.in (c-pretty-print.o): Add TREE_H and C_TREE_H dependencies.
        * Makefile.in (c-pretty-print.o): Add TREE_H and C_TREE_H dependencies.
2003-08-01  Paul Brook  
2003-08-01  Paul Brook  
        * Makefile.in (GMPINC): Set and use.
        * Makefile.in (GMPINC): Set and use.
        (GMPLIBS): Set it.
        (GMPLIBS): Set it.
        * configure.in: Add test and switches for the GMP library.
        * configure.in: Add test and switches for the GMP library.
        (all_need_gmp): Set from config-lang.in.
        (all_need_gmp): Set from config-lang.in.
        * sourcebuild.texi: Document need_gmp.
        * sourcebuild.texi: Document need_gmp.
        * configure: regen
        * configure: regen
2003-08-01  Steven Bosscher  
2003-08-01  Steven Bosscher  
        * tree-inline.c (expand_calls_inline): Fix comments.
        * tree-inline.c (expand_calls_inline): Fix comments.
2003-07-31  Diego Novillo  
2003-07-31  Diego Novillo  
        * Makefile.in (tree-ssa-ccp.o): Depend on $(EXPR_H).
        * Makefile.in (tree-ssa-ccp.o): Depend on $(EXPR_H).
        * builtins.c (c_strlen): Remove static declaration.
        * builtins.c (c_strlen): Remove static declaration.
        (simplify_builtin_fputs): Remove static declaration.
        (simplify_builtin_fputs): Remove static declaration.
        (simplify_builtin_sprintf): New local function.
        (simplify_builtin_sprintf): New local function.
        (expand_builtin_sprintf): Remove by surrounding with #if 0.
        (expand_builtin_sprintf): Remove by surrounding with #if 0.
        (expand_builtin): Add BUILT_IN_SPRINTF to the list of built-ins
        (expand_builtin): Add BUILT_IN_SPRINTF to the list of built-ins
        handed over to simplify_builtin.
        handed over to simplify_builtin.
        (validate_arglist): Do not allow arguments with TREE_SIDE_EFFECTS.
        (validate_arglist): Do not allow arguments with TREE_SIDE_EFFECTS.
        (simplify_builtin_fputs): Add new argument KNOWN_LEN.  If it's set,
        (simplify_builtin_fputs): Add new argument KNOWN_LEN.  If it's set,
        use it instead of trying to compute the length of the string.
        use it instead of trying to compute the length of the string.
        Update all callers.
        Update all callers.
        * expr.h (simplify_builtin_fputs): Declare.
        * expr.h (simplify_builtin_fputs): Declare.
        * tree-flow.h (fold_stmt): Change argument type to tree *.  Update
        * tree-flow.h (fold_stmt): Change argument type to tree *.  Update
        all users.
        all users.
        * tree-ssa-ccp.c: Include expr.h.
        * tree-ssa-ccp.c: Include expr.h.
        (replace_uses_in): If the statement makes a call to some selected
        (replace_uses_in): If the statement makes a call to some selected
        built-ins, mark it for folding.
        built-ins, mark it for folding.
        (get_strlen): New local function.
        (get_strlen): New local function.
        (ccp_fold_builtin): New local function.
        (ccp_fold_builtin): New local function.
        (fold_stmt): Call it.
        (fold_stmt): Call it.
        (set_rhs): Fix if-else-if chaining.  Handle cases where the whole
        (set_rhs): Fix if-else-if chaining.  Handle cases where the whole
        statement needs to be replaced.
        statement needs to be replaced.
        * tree.h (c_strlen): Declare.
        * tree.h (c_strlen): Declare.
2003-07-31  Diego Novillo  
2003-07-31  Diego Novillo  
        Fix PR optimization/11373
        Fix PR optimization/11373
        * tree-ssa-dce.c (stmt_useful_p): Get statement operands before
        * tree-ssa-dce.c (stmt_useful_p): Get statement operands before
        checking for volatile operands.
        checking for volatile operands.
        * tree-dfa.c (get_expr_operands): If a constant is dereferenced as a
        * tree-dfa.c (get_expr_operands): If a constant is dereferenced as a
        pointer, mark the statement as having volatile operands.
        pointer, mark the statement as having volatile operands.
        (may_access_global_mem_p): If a non-NULL constant is used as a
        (may_access_global_mem_p): If a non-NULL constant is used as a
        pointer, consider it as pointing to global memory.
        pointer, consider it as pointing to global memory.
        * tree-ssa-dom.c (optimize_stmt): Set addr_expr_propagated_p when
        * tree-ssa-dom.c (optimize_stmt): Set addr_expr_propagated_p when
        propagating pointers that are integer constants.
        propagating pointers that are integer constants.
2003-07-31  Andrew MacLeod  
2003-07-31  Andrew MacLeod  
        * tree-dfa.c (add_stmt_operand): Don't treat complex types as scalars.
        * tree-dfa.c (add_stmt_operand): Don't treat complex types as scalars.
        * tree-ssa-live.c (var_union):  Change comment.
        * tree-ssa-live.c (var_union):  Change comment.
        (coalesce_tpa_members): Don't proceed if var_union fails.
        (coalesce_tpa_members): Don't proceed if var_union fails.
        * tree-ssa.c (insert_copy_on_edge): Change comment.
        * tree-ssa.c (insert_copy_on_edge): Change comment.
        (coalesce_abnormal_edges): Handle var_union failing.
        (coalesce_abnormal_edges): Handle var_union failing.
        (coalesce_vars): Skip constant PHI arguments.
        (coalesce_vars): Skip constant PHI arguments.
2003-07-30  Jeff Law  
2003-07-30  Jeff Law  
        * tree-cfg.c (bsi_remove): Don't remove a COMPOUND_EXPR with empty
        * tree-cfg.c (bsi_remove): Don't remove a COMPOUND_EXPR with empty
        arms if the arms are in different basic blocks.
        arms if the arms are in different basic blocks.
        * tree-ssa-dom.c (record_cond_is_false): New function.
        * tree-ssa-dom.c (record_cond_is_false): New function.
        (record_cond_is_true): Similarly.
        (record_cond_is_true): Similarly.
        (get_eq_expr_value): Use record_cond_expr_is_{true,false}.
        (get_eq_expr_value): Use record_cond_expr_is_{true,false}.
        (optimize_stmt): Fix minor formatting issue.  If we encounter an
        (optimize_stmt): Fix minor formatting issue.  If we encounter an
        INDIRECT_REF, record that the dereferenced pointer can not be
        INDIRECT_REF, record that the dereferenced pointer can not be
        null.
        null.
2003-07-30  Daniel Berlin  
2003-07-30  Daniel Berlin  
        * tree-dump.c (dump_option_value_in): "all" is now everything but
        * tree-dump.c (dump_option_value_in): "all" is now everything but
        TDF_RAW and TDF_SLIM.
        TDF_RAW and TDF_SLIM.
2003-07-30  Diego Novillo  
2003-07-30  Diego Novillo  
        * tree-simple.c (is_gimple_const): Accept CONST + CONST expressions
        * tree-simple.c (is_gimple_const): Accept CONST + CONST expressions
        as GIMPLE constants.
        as GIMPLE constants.
2003-07-30  Daniel Berlin  
2003-07-30  Daniel Berlin  
        * tree-ssa-pre.c: #include real.h
        * tree-ssa-pre.c: #include real.h
        (defs_match_p): Change arguments to something normal now that we use
        (defs_match_p): Change arguments to something normal now that we use
        the new renaming algorithm. Update all callers.
        the new renaming algorithm. Update all callers.
        Use defs_hash_expr.
        Use defs_hash_expr.
        (defs_y_dom_x): Ditto.
        (defs_y_dom_x): Ditto.
        (defs_hash_expr): New. Based on iterative_hash_expr.
        (defs_hash_expr): New. Based on iterative_hash_expr.
        (generate_exr_as_of_bb): If there aren't any uses, return.
        (generate_exr_as_of_bb): If there aren't any uses, return.
        (subst_phis): Call modify_stmt on the actually modified statement. :)
        (subst_phis): Call modify_stmt on the actually modified statement. :)
        (get_default_def): Only walk SSA_NAME arguments in PHI's.
        (get_default_def): Only walk SSA_NAME arguments in PHI's.
2003-07-30  Jason Merrill  
2003-07-30  Jason Merrill  
        Don't modify code that is already GIMPLE.
        Don't modify code that is already GIMPLE.
        * gimplify.c (gimplify_expr): Don't return early if the predicate
        * gimplify.c (gimplify_expr): Don't return early if the predicate
        matches.
        matches.
        Use a variable temp if the caller wants an lvalue.
        Use a variable temp if the caller wants an lvalue.
        Don't call gimplify_constructor if we're on the rhs of a MODIFY_EXPR.
        Don't call gimplify_constructor if we're on the rhs of a MODIFY_EXPR.
        (add_tree, add_stmt_to_compound): Do add an empty stmt if we
        (add_tree, add_stmt_to_compound): Do add an empty stmt if we
        previously had nothing at all.
        previously had nothing at all.
        (gimplify_return_expr): Don't mess with iterators if it was already
        (gimplify_return_expr): Don't mess with iterators if it was already
        gimple.
        gimple.
        (gimplify_cond_expr): Remove a COND_EXPR with two empty arms.
        (gimplify_cond_expr): Remove a COND_EXPR with two empty arms.
        (gimplify_call_expr): Try to simplify a builtin again after
        (gimplify_call_expr): Try to simplify a builtin again after
        gimplifying the args.
        gimplifying the args.
        (internal_get_tmp_var): Gimplify the new MODIFY_EXPR.
        (internal_get_tmp_var): Gimplify the new MODIFY_EXPR.
        (gimplify_expr, gimple_push_cleanup): Use boolean_false_node.
        (gimplify_expr, gimple_push_cleanup): Use boolean_false_node.
        (gimplify_init_constructor): New fn, broken out from...
        (gimplify_init_constructor): New fn, broken out from...
        (gimplify_modify_expr): ...here.  Be smarter about zero-initialization.
        (gimplify_modify_expr): ...here.  Be smarter about zero-initialization.
        * tree-simple.c (is_gimple_rhs): Accept any CONSTRUCTOR.
        * tree-simple.c (is_gimple_rhs): Accept any CONSTRUCTOR.
        * tree-simple.h: Adjust add_tree prototype.
        * tree-simple.h: Adjust add_tree prototype.
2003-07-29  Daniel Berlin  
2003-07-29  Daniel Berlin  
        * tree-alias-common.c (create_alias_vars):  If we created global_var,
        * tree-alias-common.c (create_alias_vars):  If we created global_var,
        delete it when we are done.
        delete it when we are done.
        (ptr_may_alias_var): Handle case that global_var is now NULL_TREE.
        (ptr_may_alias_var): Handle case that global_var is now NULL_TREE.
2003-07-29  Jeff Law  
2003-07-29  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Propagate copies into VUSEs and
        * tree-ssa-dom.c (optimize_stmt): Propagate copies into VUSEs and
        the RHS of VDEFs.
        the RHS of VDEFs.
2003-07-29  Andrew MacLeod  
2003-07-29  Andrew MacLeod  
        * tree-ssa.c (insert_copy_on_edge): Only set used bit on DECL nodes.
        * tree-ssa.c (insert_copy_on_edge): Only set used bit on DECL nodes.
2003-07-29  Andrew MacLeod  
2003-07-29  Andrew MacLeod  
        * common.opt (ftree-combine-temps): Add new option.
        * common.opt (ftree-combine-temps): Add new option.
        * flags.h (flag_tree_combine_temps): New flag.
        * flags.h (flag_tree_combine_temps): New flag.
        * opts.c (decode_options): Initialize flag_tree_combine_temps.
        * opts.c (decode_options): Initialize flag_tree_combine_temps.
        (common_handle_option): Handle new flag.
        (common_handle_option): Handle new flag.
        * toplev.c (flag_tree_combine_temps): Declare.
        * toplev.c (flag_tree_combine_temps): Declare.
        (lang_independent_options f): Add tree-combine-temp.
        (lang_independent_options f): Add tree-combine-temp.
        * tree-ssa-live.c (var_union): When combining 2 root variables, choose
        * tree-ssa-live.c (var_union): When combining 2 root variables, choose
        the user variable over a temporary as the new variable.
        the user variable over a temporary as the new variable.
        (compact_var_map): Use renamed root_var routines.
        (compact_var_map): Use renamed root_var routines.
        (calculate_live_on_exit): Reformatting.
        (calculate_live_on_exit): Reformatting.
        (tpa_init): Initialize a tpa object.
        (tpa_init): Initialize a tpa object.
        (tpa_remove_partition): Remove a partition from a tpa list.
        (tpa_remove_partition): Remove a partition from a tpa list.
        (tpa_delete): Delete a tpa object.
        (tpa_delete): Delete a tpa object.
        (tpa_compact): Hide single elemenet lists.
        (tpa_compact): Hide single elemenet lists.
        (root_var_init): Split common part into tpa_init and rename.
        (root_var_init): Split common part into tpa_init and rename.
        (remove_root_var_partition, delete_root_va, dump_root_var): Delete.
        (remove_root_var_partition, delete_root_va, dump_root_var): Delete.
        (type_var_init): New. Initialize a type_var object.
        (type_var_init): New. Initialize a type_var object.
        (create_coalesce_list): New. Create a coalesce_list object.
        (create_coalesce_list): New. Create a coalesce_list object.
        (delete_coalesce_list): New. Free a coalesce list's memory.
        (delete_coalesce_list): New. Free a coalesce list's memory.
        (find_partition_pair): New. Find a coalesce pair in a coalesce list.
        (find_partition_pair): New. Find a coalesce pair in a coalesce list.
        (add_coalesce): New. Add a coalesce between 2 partitions.
        (add_coalesce): New. Add a coalesce between 2 partitions.
        (sort_coalesce_list): New. Sort coalesce pairs by importance.
        (sort_coalesce_list): New. Sort coalesce pairs by importance.
        (pop_best_coalesce): New. Get best remaining pair to coalesce.
        (pop_best_coalesce): New. Get best remaining pair to coalesce.
        (add_conflicts_if_valid): Move from tree-ssa.c.
        (add_conflicts_if_valid): Move from tree-ssa.c.
        (build_tree_conflict_graph): Move from coalesce_ssa_name in tree-ssa.c.
        (build_tree_conflict_graph): Move from coalesce_ssa_name in tree-ssa.c.
        Genericize to use tpa_p instead of root_var object. Don't add
        Genericize to use tpa_p instead of root_var object. Don't add
        interferences between copies. Update coalesce list.
        interferences between copies. Update coalesce list.
        (coalesce_tpa_members): Move from coalesce_ssa_name in tree-ssa.c. Use
        (coalesce_tpa_members): Move from coalesce_ssa_name in tree-ssa.c. Use
        tpa_p instead of root_var. Use coalesce list if provided.
        tpa_p instead of root_var. Use coalesce list if provided.
        (dump_coalesce_list): New. Show debug info for a coalesce list.
        (dump_coalesce_list): New. Show debug info for a coalesce list.
        (tpa_dump): Rename from dump_root_var and genericize to use tpa_p.
        (tpa_dump): Rename from dump_root_var and genericize to use tpa_p.
        * tree-ssa-live.h (root_var_p): Rename structure type to tpa_p
        * tree-ssa-live.h (root_var_p): Rename structure type to tpa_p
        (tpa_num_trees, tpa_tree, tpa_first_partition, tpa_next_partition,
        (tpa_num_trees, tpa_tree, tpa_first_partition, tpa_next_partition,
        tpa_find_tree): New. Generic versions of existing root_var routines.
        tpa_find_tree): New. Generic versions of existing root_var routines.
        (tpa_decompact): New. Include single version lists.
        (tpa_decompact): New. Include single version lists.
        (root_var_p): Declare as type tpa_p.
        (root_var_p): Declare as type tpa_p.
        (root_var_num, root_var, root_var_first_partition,
        (root_var_num, root_var, root_var_first_partition,
        root_var_next_partition, root_var_dump, root_var_delete,
        root_var_next_partition, root_var_dump, root_var_delete,
        root_var_remove_partition, root_var_find , root_var_compac,
        root_var_remove_partition, root_var_find , root_var_compac,
        root_var_decompac): Rename and call generic versions.
        root_var_decompac): Rename and call generic versions.
        (type_var_p): New. Use tpa_p structure for a type based association.
        (type_var_p): New. Use tpa_p structure for a type based association.
        (type_var_num, type_var, type_var_first_partition,
        (type_var_num, type_var, type_var_first_partition,
        type_var_next_partition, type_var_dump, type_var_delete,
        type_var_next_partition, type_var_dump, type_var_delete,
        type_var_remove_partition, type_var_find, type_var_compact,
        type_var_remove_partition, type_var_find, type_var_compact,
        type_var_decompact): New. Call generic versions of the routine.
        type_var_decompact): New. Call generic versions of the routine.
        (struct partition_pair_d): New. Represent a desired coalesce.
        (struct partition_pair_d): New. Represent a desired coalesce.
        (struct coalesce_list_d): New. Organize lists of desired coalesces.
        (struct coalesce_list_d): New. Organize lists of desired coalesces.
        (NO_BEST_COALESCE): Define value.
        (NO_BEST_COALESCE): Define value.
        * tree-ssa.c (set_if_valid): Remove.
        * tree-ssa.c (set_if_valid): Remove.
        (insert_copy_on_edge): Set variable as used when inserting a copy.
        (insert_copy_on_edge): Set variable as used when inserting a copy.
        (add_conflicts_if_valid): Remove. Move to tree-ssa-live.c.
        (add_conflicts_if_valid): Remove. Move to tree-ssa-live.c.
        (print_exprs): New. Routine for commonly used output format.
        (print_exprs): New. Routine for commonly used output format.
        (coalesce_abnormal_edges): New. Split from coalece_ssa_name. Force
        (coalesce_abnormal_edges): New. Split from coalece_ssa_name. Force
        partition coalesces across abnormal edges.
        partition coalesces across abnormal edges.
        (coalesce_ssa_name): Split out build_tree_conflict_graph,
        (coalesce_ssa_name): Split out build_tree_conflict_graph,
        coalesce_abnormal_edges, and coalesce_tpa_members. Return live
        coalesce_abnormal_edges, and coalesce_tpa_members. Return live
        range info if required. Use renamed root_var routines.
        range info if required. Use renamed root_var routines.
        (assign_vars): Use renamed root_var routines.
        (assign_vars): Use renamed root_var routines.
        (replace_variable): Mark as inline.
        (replace_variable): Mark as inline.
        (coalesce_vars): Coalesce variable memory storage.
        (coalesce_vars): Coalesce variable memory storage.
        (rewrite_out_of_ssa): Don't compact varmap anymore. Free live range
        (rewrite_out_of_ssa): Don't compact varmap anymore. Free live range
        info if required. Call coalesce_vars if combining temps.
        info if required. Call coalesce_vars if combining temps.
2003-07-29  Andrew MacLeod  
2003-07-29  Andrew MacLeod  
        * tree-cfg.c (handle_switch_fallthru): Use bsi_link_after if stmt is
        * tree-cfg.c (handle_switch_fallthru): Use bsi_link_after if stmt is
        in a basic block.
        in a basic block.
2003-07-28  Diego Novillo  
2003-07-28  Diego Novillo  
        * opts.c (decode_options): Disable must-alias optimization.
        * opts.c (decode_options): Disable must-alias optimization.
2003-07-28  Andrew MacLeod  
2003-07-28  Andrew MacLeod  
        * tree-ssa.c (struct _elim_graph): Add varray for constant copies.
        * tree-ssa.c (struct _elim_graph): Add varray for constant copies.
        (new_elim_graph): Initialize constant copy array..
        (new_elim_graph): Initialize constant copy array..
        (eliminate_build): Push constant copies onto stack instead of emitting.
        (eliminate_build): Push constant copies onto stack instead of emitting.
        (eliminate_phi): Emit any pending constant copies.
        (eliminate_phi): Emit any pending constant copies.
2003-07-28  Jeff Law  
2003-07-28  Jeff Law  
        * tree-ssa-dom.c (optimize_block): If a PHI has a single argument
        * tree-ssa-dom.c (optimize_block): If a PHI has a single argument
        that is a constant, then that creates a useful equivalence.
        that is a constant, then that creates a useful equivalence.
        Propagate constant values into PHI nodes.
        Propagate constant values into PHI nodes.
        * tree-flow-inline.h (may_propagate_copy): Allow RHS to be a
        * tree-flow-inline.h (may_propagate_copy): Allow RHS to be a
        constant.
        constant.
        * tree-dfa.c (compute_immediate_uses_for): Do not assume that
        * tree-dfa.c (compute_immediate_uses_for): Do not assume that
        PHI arguments are SSA_NAMEs.
        PHI arguments are SSA_NAMEs.
        * tree-ssa-dce.c (process_worklist): Likewise.
        * tree-ssa-dce.c (process_worklist): Likewise.
        * tree-ssa-copyprop.c (copyprop_phi): Likewise.  Use may_propagate_copy.
        * tree-ssa-copyprop.c (copyprop_phi): Likewise.  Use may_propagate_copy.
        * tree-ssa-ccp.c (visit_phi_node): Do not assume that PHI arguments
        * tree-ssa-ccp.c (visit_phi_node): Do not assume that PHI arguments
        are SSA_NAMEs.  Create a suitable value if a PHI argument is a
        are SSA_NAMEs.  Create a suitable value if a PHI argument is a
        constant.
        constant.
        * tree-cfg.c (move_outgoing_edges): Correctly handle case where
        * tree-cfg.c (move_outgoing_edges): Correctly handle case where
        an edge already exists from BB1 to BB2's successor.
        an edge already exists from BB1 to BB2's successor.
2003-07-27  Daniel Berlin  
2003-07-27  Daniel Berlin  
        * tree.h (EREF_TEMP): Rename to EPHI_TEMP.
        * tree.h (EREF_TEMP): Rename to EPHI_TEMP.
        (tree_eref_common): Move temp to tree_ephi_node.
        (tree_eref_common): Move temp to tree_ephi_node.
        * tree-ssa-pre.c: Remove #if 0'd code.
        * tree-ssa-pre.c: Remove #if 0'd code.
        Use EPHI_TEMP rather than EREF_TEMP, remove EREF_TEMP on EUSE nodes.
        Use EPHI_TEMP rather than EREF_TEMP, remove EREF_TEMP on EUSE nodes.
    (finalize_1): Handle empty blocks properly.
    (finalize_1): Handle empty blocks properly.
2003-07-27  Andreas Jaeger  
2003-07-27  Andreas Jaeger  
        * tree.c: Convert remaining K&R prototypes to ISO C90.
        * tree.c: Convert remaining K&R prototypes to ISO C90.
        * tree-dump.c: Likewise.
        * tree-dump.c: Likewise.
        * tree-inline.c: Likewise.
        * tree-inline.c: Likewise.
        * stmt.c (expand_asm_expr): Likewise.
        * stmt.c (expand_asm_expr): Likewise.
        * diagnostic.h: Remove PARAMS.
        * diagnostic.h: Remove PARAMS.
2003-07-26  Paul Brook  
2003-07-26  Paul Brook  
        * Makefile.in: Rename check-g95 to check-gfortran.
        * Makefile.in: Rename check-g95 to check-gfortran.
        * gcc.c (default_compilers): Add entries for .f90 and .f95.
        * gcc.c (default_compilers): Add entries for .f90 and .f95.
        * doc/frontends.texi: Document new F95 front end.
        * doc/frontends.texi: Document new F95 front end.
        * doc/install.texi: Ditto.
        * doc/install.texi: Ditto.
        * doc/invoke.texi: Ditto.
        * doc/invoke.texi: Ditto.
        * doc/sourcebuild.texi: Ditto.
        * doc/sourcebuild.texi: Ditto.
        * fortran: New front end.
        * fortran: New front end.
2003-07-25  Jeff law  
2003-07-25  Jeff law  
        * tree-ssa-dom.c (optimize_block): Use may_propagate_copy.
        * tree-ssa-dom.c (optimize_block): Use may_propagate_copy.
2003-07-25  Diego Novillo  
2003-07-25  Diego Novillo  
        * opts.c (decode_options): Re-enable must-alias optimizations.
        * opts.c (decode_options): Re-enable must-alias optimizations.
2003-07-25  Daniel Berlin  
2003-07-25  Daniel Berlin  
        * configure.in:  Update BANSHEEREBUILD for PWD change.
        * configure.in:  Update BANSHEEREBUILD for PWD change.
        * configure: regen
        * configure: regen
2003-07-25  Andreas Jaeger  
2003-07-25  Andreas Jaeger  
        * c-call-graph.c: Convert to ISO C90.
        * c-call-graph.c: Convert to ISO C90.
        * c-common.c: Likewise.
        * c-common.c: Likewise.
        * c-mudflap.c: Likewise.
        * c-mudflap.c: Likewise.
        * c-pretty-print.c: Likewise.
        * c-pretty-print.c: Likewise.
        * cfganal.c (find_edge): Likewise.
        * cfganal.c (find_edge): Likewise.
        * dependence.c: Likewise.
        * dependence.c: Likewise.
        * diagnostic.c (debug_output_buffer): Likewise.
        * diagnostic.c (debug_output_buffer): Likewise.
        * except.c (expand_eh_handler): Likewise.
        * except.c (expand_eh_handler): Likewise.
        * fold-const.c: Likewise.
        * fold-const.c: Likewise.
        * langhooks.c: Likewise.
        * langhooks.c: Likewise.
        * tree-cfg.c (last_exec_block): Likewise.
        * tree-cfg.c (last_exec_block): Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * builtins.c: Likewise.
        * builtins.c: Likewise.
        * tree.h: Remove remaining PARAMS.
        * tree.h: Remove remaining PARAMS.
        * c-common.h: Likewise.
        * c-common.h: Likewise.
        * c-pretty-print.h: Likewise
        * c-pretty-print.h: Likewise
        * c-tree.h: Likewise.
        * c-tree.h: Likewise.
        * except.h: Likewise.
        * except.h: Likewise.
        * langhooks-def.h: Likewise.
        * langhooks-def.h: Likewise.
        * langhooks.h: Likewise.
        * langhooks.h: Likewise.
2003-07-24  Diego Novillo  
2003-07-24  Diego Novillo  
        * tree-dfa.c (cleanup_operand_arrays): New local function.  Remove
        * tree-dfa.c (cleanup_operand_arrays): New local function.  Remove
        superfluous VUSE operands.
        superfluous VUSE operands.
        (get_stmt_operands): Call it.
        (get_stmt_operands): Call it.
2003-07-24  Jason Merrill  
2003-07-24  Jason Merrill  
        * gimplify.c (gimple_boolify): New fn.
        * gimplify.c (gimple_boolify): New fn.
        (gimplify_expr) : Boolify arg.
        (gimplify_expr) : Boolify arg.
        (gimplify_cond_expr): Boolify condition.
        (gimplify_cond_expr): Boolify condition.
        (gimplify_boolean_expr): Boolify args.
        (gimplify_boolean_expr): Boolify args.
        (gimple_push_cleanup): Make flag boolean.
        (gimple_push_cleanup): Make flag boolean.
        * tree-simple.c (is_gimple_relop): TRUTH_{AND,OR,XOR}_EXPR
        * tree-simple.c (is_gimple_relop): TRUTH_{AND,OR,XOR}_EXPR
        are not comparisons.
        are not comparisons.
        (is_gimple_binary_expr): They are binary ops.
        (is_gimple_binary_expr): They are binary ops.
        * tree-mudflap.c (mf_build_check_statement_for): Use TRUTH_OR_EXPR
        * tree-mudflap.c (mf_build_check_statement_for): Use TRUTH_OR_EXPR
        rather than BIT_IOR_EXPR.
        rather than BIT_IOR_EXPR.
2003-07-23  Jason Merrill  
2003-07-23  Jason Merrill  
            Diego Novillo  
            Diego Novillo  
        * c-common.h (DECL_C_HARD_REGISTER): Replace ...
        * c-common.h (DECL_C_HARD_REGISTER): Replace ...
        * tree.h (DECL_HARD_REGISTER): ... with this.  Update all users.
        * tree.h (DECL_HARD_REGISTER): ... with this.  Update all users.
2003-07-23  Diego Novillo  
2003-07-23  Diego Novillo  
        * tree-flow-inline.h (may_propagate_copy): New function.
        * tree-flow-inline.h (may_propagate_copy): New function.
        * tree-flow.h (may_propagate_copy): Declare.
        * tree-flow.h (may_propagate_copy): Declare.
        * tree-ssa-copyprop.c (copyprop_stmt): Call it.
        * tree-ssa-copyprop.c (copyprop_stmt): Call it.
        (get_original): Likewise.
        (get_original): Likewise.
        * tree-ssa-dom.c (optimize_stmt): Likewise.
        * tree-ssa-dom.c (optimize_stmt): Likewise.
2003-07-23  Frank Ch. Eigler  
2003-07-23  Frank Ch. Eigler  
        * gcc.c (MFWRAP_SPEC): Also wrap pthread_join and pthread_exit.
        * gcc.c (MFWRAP_SPEC): Also wrap pthread_join and pthread_exit.
2003-07-23  Steven Bosscher  
2003-07-23  Steven Bosscher  
        * tree-flow-inline.h (remove_dom_child): New function.
        * tree-flow-inline.h (remove_dom_child): New function.
        (clear_dom_children): New function.
        (clear_dom_children): New function.
        * tree-cfg.c (bsi_insert_on_edge_immediate): Do not clear
        * tree-cfg.c (bsi_insert_on_edge_immediate): Do not clear
        the annotation for the new bb, it is already memset to zero
        the annotation for the new bb, it is already memset to zero
        in alloc_aux_for_block().
        in alloc_aux_for_block().
        (move_outgoing_edges): Use dom_children() instead of looking
        (move_outgoing_edges): Use dom_children() instead of looking
        at the dom_children field in the basic block annotation.
        at the dom_children field in the basic block annotation.
        * tree-ssa.c (rewrite_into_ssa): Use clear_dom_children().
        * tree-ssa.c (rewrite_into_ssa): Use clear_dom_children().
        * tree-cfg.c (dump_tree_cfg): Dump to `file', not `dump_file'.
        * tree-cfg.c (dump_tree_cfg): Dump to `file', not `dump_file'.
2003-07-23  Diego Novillo  
2003-07-23  Diego Novillo  
        * tree.h (DECL_ESTIMATED_INSNS): Move from c-common.h.
        * tree.h (DECL_ESTIMATED_INSNS): Move from c-common.h.
2003-07-23  Steven Bosscher  
2003-07-23  Steven Bosscher  
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Make
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Make
        found_unreachable a bool.  Create/delete hash tables for
        found_unreachable a bool.  Create/delete hash tables for
        copies and available exprs outside the main loop.  Use
        copies and available exprs outside the main loop.  Use
        htab_clean to wipe them after each iteration.
        htab_clean to wipe them after each iteration.
2003-07-22  Diego Novillo  
2003-07-22  Diego Novillo  
        * opts.c (decode_options): Add temporary test for environment
        * opts.c (decode_options): Add temporary test for environment
        variable TREE_SSA_DO_PRE.
        variable TREE_SSA_DO_PRE.
        Do not disable dominator optimizations when PRE is enabled.
        Do not disable dominator optimizations when PRE is enabled.
2003-07-22  Daniel Berlin  
2003-07-22  Daniel Berlin  
        * tree-ssa-pre.c (finalize_1): Change to not use bsi_last.
        * tree-ssa-pre.c (finalize_1): Change to not use bsi_last.
2003-07-22  Daniel Berlin  
2003-07-22  Daniel Berlin  
        * tree-cfg.c (remove_stmt): Revert 07-15 change. Turns out the bug is in
        * tree-cfg.c (remove_stmt): Revert 07-15 change. Turns out the bug is in
        the reverse iterator.
        the reverse iterator.
2003-07-22  Diego Novillo  
2003-07-22  Diego Novillo  
        * tree-ssa-ccp.c (visit_phi_node): Assume default value of CONSTANT
        * tree-ssa-ccp.c (visit_phi_node): Assume default value of CONSTANT
        if the PHI value was already constant.
        if the PHI value was already constant.
2003-07-22  Andrew MacLeod  
2003-07-22  Andrew MacLeod  
        * c-pretty-print.c (print_call_name): Handle COND_EXPR correctly.
        * c-pretty-print.c (print_call_name): Handle COND_EXPR correctly.
        * tree-pretty-print.c (print_call_name): Handle COND_EXPR correctly and
        * tree-pretty-print.c (print_call_name): Handle COND_EXPR correctly and
        handle SSA_NAME.
        handle SSA_NAME.
        * tree-dfa.c (add_phi_arg, remove_phi_arg_num): Remove references to
        * tree-dfa.c (add_phi_arg, remove_phi_arg_num): Remove references to
        SSA_NAME_HAS_REAL_REFS.
        SSA_NAME_HAS_REAL_REFS.
        * tree-ssa-ccp.c (visit_phi_node): Remove SSA_NAME_HAS_REAL_REFS.
        * tree-ssa-ccp.c (visit_phi_node): Remove SSA_NAME_HAS_REAL_REFS.
        * tree-ssa-copyprop.c (copyprop_phi): Remove SSA_NAME_HAS_REAL_REFS.
        * tree-ssa-copyprop.c (copyprop_phi): Remove SSA_NAME_HAS_REAL_REFS.
        * tree-ssa-live.c (register_ssa_partition): Register the PHI and it's
        * tree-ssa-live.c (register_ssa_partition): Register the PHI and it's
        arguments if this variable is defined by a PHI.
        arguments if this variable is defined by a PHI.
        (create_ssa_var_map): Only register real uses and defs, and virtual
        (create_ssa_var_map): Only register real uses and defs, and virtual
        operands of ASM_EXPR's. Remove SSA_NAME_HAS_REAL_REFS. Don't set
        operands of ASM_EXPR's. Remove SSA_NAME_HAS_REAL_REFS. Don't set
        used flag on variables here.
        used flag on variables here.
        (calculate_live_on_entry): Ignore constants in PHI arguments.
        (calculate_live_on_entry): Ignore constants in PHI arguments.
        (calculate_live_on_exit): Ignore constants in PHI arguments.
        (calculate_live_on_exit): Ignore constants in PHI arguments.
        (dump_live_info): New. Dump live range information.
        (dump_live_info): New. Dump live range information.
        * tree-ssa-live.h (dump_live_info): New prototype and flags.
        * tree-ssa-live.h (dump_live_info): New prototype and flags.
        * tree-ssa-pre.c (create_expr_ref, finalize_1, repair_use_injury,
        * tree-ssa-pre.c (create_expr_ref, finalize_1, repair_use_injury,
        code_motion): Remove SSA_NAME_HAS_REAL_REFS.
        code_motion): Remove SSA_NAME_HAS_REAL_REFS.
        * tree-ssa.c (rewrite_operand, register_new_def): Remove real_ref
        * tree-ssa.c (rewrite_operand, register_new_def): Remove real_ref
        parameter and SSA_NAME_HAS_REAL_REFS.
        parameter and SSA_NAME_HAS_REAL_REFS.
        (rewrite_block): Remove real_ref parameter from register_new_def call.
        (rewrite_block): Remove real_ref parameter from register_new_def call.
        (eliminate_build): Remove SSA_NAME_HAS_REAL_REFS. Insert copy if PHI
        (eliminate_build): Remove SSA_NAME_HAS_REAL_REFS. Insert copy if PHI
        argument is a constant. Handle irregular PHI argument ordering.
        argument is a constant. Handle irregular PHI argument ordering.
        (elim_create): Remove dead code to count PHI nodes.
        (elim_create): Remove dead code to count PHI nodes.
        (assign_vars): Set used flag on variables when assigned.
        (assign_vars): Set used flag on variables when assigned.
        (replace_variable): Eliminate dead code.
        (replace_variable): Eliminate dead code.
        (coalesce_ssa_name): Remove SSA_NAME_HAS_REAL_REFS. Print error for
        (coalesce_ssa_name): Remove SSA_NAME_HAS_REAL_REFS. Print error for
        constant argument across an abnormal edge.
        constant argument across an abnormal edge.
        (eliminate_extraneous_phis): New. Remove PHI nodes which are not in
        (eliminate_extraneous_phis): New. Remove PHI nodes which are not in
        the partition.
        the partition.
        (rewrite_out_of_ssa): Call eliminate_extraneous_phis.
        (rewrite_out_of_ssa): Call eliminate_extraneous_phis.
        (rewrite_stmt): Remove real_ref parameter from rewrite_operand and
        (rewrite_stmt): Remove real_ref parameter from rewrite_operand and
        register_new_def.
        register_new_def.
        * tree.h (SSA_NAME_HAS_REAL_REFS): Remove.
        * tree.h (SSA_NAME_HAS_REAL_REFS): Remove.
        (struct tree_ssa_name): Remove 'has_real_refs' field.
        (struct tree_ssa_name): Remove 'has_real_refs' field.
2003-07-22  Daniel Berlin  
2003-07-22  Daniel Berlin  
        * tree-ssa-pre.c (factor_through_injuries): Take new argument specifying
        * tree-ssa-pre.c (factor_through_injuries): Take new argument specifying
        whether use was injured or not (needed for SR).   Update all callers.
        whether use was injured or not (needed for SR).   Update all callers.
        (maybe_find_rhs_use_for_var): Take new argument specifying which
        (maybe_find_rhs_use_for_var): Take new argument specifying which
        operand to start search with.   Update all callers.
        operand to start search with.   Update all callers.
        (phi_opnd_from_res): #if 0 out.
        (phi_opnd_from_res): #if 0 out.
        (rename_2): Ditto.
        (rename_2): Ditto.
        (rename_1): Ditto.
        (rename_1): Ditto.
        (defs_match_p): Take new arguments specifying which defs were injured.
        (defs_match_p): Take new arguments specifying which defs were injured.
        Update all callers.
        Update all callers.
        (defs_y_dom_x): Ditto.
        (defs_y_dom_x): Ditto.
        (generate_expr_as_of_bb): Fix small memory overwrite.
        (generate_expr_as_of_bb): Fix small memory overwrite.
        (process_delayed_rename): Propagate injured flag around.
        (process_delayed_rename): Propagate injured flag around.
        (new_rename_1): Ditto.
        (new_rename_1): Ditto.
        (finalize_1): Get correct variable names for newly created statement if
        (finalize_1): Get correct variable names for newly created statement if
        necessary due to PHI.
        necessary due to PHI.
        (repair_use_injury): Note the repair in the stats. Insert repair
        (repair_use_injury): Note the repair in the stats. Insert repair
        in right place.
        in right place.
        (repair_euse_injury): Fix handling of PHI_NODE.
        (repair_euse_injury): Fix handling of PHI_NODE.
        (code_motion): Fix algorithm so it can handle using reaching_def all the
        (code_motion): Fix algorithm so it can handle using reaching_def all the
        time (needed for SR).
        time (needed for SR).
        Use reaching_def rather than EREF_TEMP.
        Use reaching_def rather than EREF_TEMP.
2003-07-21  Diego Novillo  
2003-07-21  Diego Novillo  
        * tree-dfa.c (get_stmt_operands): Remove FIXME note
        * tree-dfa.c (get_stmt_operands): Remove FIXME note
        regarding virtual operands for ASM_EXPRs.
        regarding virtual operands for ASM_EXPRs.
2003-07-21  Diego Novillo  
2003-07-21  Diego Novillo  
        * tree-dfa.c (add_def): Renamed from set_def.  Update all users.
        * tree-dfa.c (add_def): Renamed from set_def.  Update all users.
        (get_stmt_operands): Don't force ASM_EXPR operands to be virtual.
        (get_stmt_operands): Don't force ASM_EXPR operands to be virtual.
        (add_stmt_operand): Allow non-assignments to create new defs.
        (add_stmt_operand): Allow non-assignments to create new defs.
        * tree-dump.c (dump_function): Move header dump...
        * tree-dump.c (dump_function): Move header dump...
        (dump_function_to_file): ... here.
        (dump_function_to_file): ... here.
        * tree-flow-inline.h (def_ops): Renamed from def_op.  Return a
        * tree-flow-inline.h (def_ops): Renamed from def_op.  Return a
        varray with all the definitions made by the statement.
        varray with all the definitions made by the statement.
        Update all users.
        Update all users.
        * tree-flow.h (struct operands_d): Rename field 'def_op' to
        * tree-flow.h (struct operands_d): Rename field 'def_op' to
        'def_ops'.  Convert it into a varray.
        'def_ops'.  Convert it into a varray.
        * tree-must-alias.c (tree_compute_must_alias): Call
        * tree-must-alias.c (tree_compute_must_alias): Call
        dump_function_to_file instead of dump_function.
        dump_function_to_file instead of dump_function.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        (visit_stmt): Only visit statements that make new definitions using
        (visit_stmt): Only visit statements that make new definitions using
        MODIFY_EXPR.
        MODIFY_EXPR.
        Definitions coming from other statements are considered VARYING.
        Definitions coming from other statements are considered VARYING.
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Call
        * tree-ssa-copyprop.c (tree_ssa_copyprop): Call
        dump_function_to_file instead of dump_function.
        dump_function_to_file instead of dump_function.
        * tree-ssa-dce.c (tree_ssa_dce): Likewise.
        * tree-ssa-dce.c (tree_ssa_dce): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
        (optimize_stmt): Don't abort if a statement makes more than one
        (optimize_stmt): Don't abort if a statement makes more than one
        definition.
        definition.
        Check for MODIFY_EXPR statements directly, instead of relying on
        Check for MODIFY_EXPR statements directly, instead of relying on
        the presence of a single definition.
        the presence of a single definition.
        * tree-ssa-pre.c (tree_perform_ssapre): Call dump_function_to_file
        * tree-ssa-pre.c (tree_perform_ssapre): Call dump_function_to_file
        instead of dump_function.
        instead of dump_function.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        * tree-ssa.c (rewrite_into_ssa): Likewise.
        Dump the function before dominator optimizations if TDF_DETAILS is
        Dump the function before dominator optimizations if TDF_DETAILS is
        set.
        set.
        (rewrite_stmt): Don't abort if the statement makes more than one
        (rewrite_stmt): Don't abort if the statement makes more than one
        definition.
        definition.
2003-07-21  Jeff Law  
2003-07-21  Jeff Law  
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If we made any
        * tree-ssa-dom.c (tree_ssa_dominator_optimize): If we made any
        blocks unreachable, repeat the dominator optimizations.
        blocks unreachable, repeat the dominator optimizations.
        (optimize_block): Enter PHIs with a single source argument into
        (optimize_block): Enter PHIs with a single source argument into
        the const_and_copies table.  When propagating into a PHI node,
        the const_and_copies table.  When propagating into a PHI node,
        break the loop over the PHI arguments when a propagation is performed.
        break the loop over the PHI arguments when a propagation is performed.
        If the PHI agument is not an SSA_VAR, then no propagation is possible.
        If the PHI agument is not an SSA_VAR, then no propagation is possible.
        (optimize_stmt): If an operand is not an SSA_VAR, then no propagation
        (optimize_stmt): If an operand is not an SSA_VAR, then no propagation
        is possible/needed.
        is possible/needed.
2003-07-21  Diego Novillo  
2003-07-21  Diego Novillo  
        * Makefile.in (tree-ssa-dom.o): Add dependency on $(TREE_DUMP_H).
        * Makefile.in (tree-ssa-dom.o): Add dependency on $(TREE_DUMP_H).
        * fold-const.c (fold): Remove unusued local variable 'invert'.
        * fold-const.c (fold): Remove unusued local variable 'invert'.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-dom.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-dom.
        * tree-flow.h (tree_ssa_dominator_optimize): Change declaration to
        * tree-flow.h (tree_ssa_dominator_optimize): Change declaration to
        accept a function decl.
        accept a function decl.
        * tree-ssa-dom.c: Include timevar.h and tree-dump.h.
        * tree-ssa-dom.c: Include timevar.h and tree-dump.h.
        (tree_ssa_dominator_optimize): Change to receive the function decl
        (tree_ssa_dominator_optimize): Change to receive the function decl
        for the function to optimize.  Update callers.
        for the function to optimize.  Update callers.
        Use own dump file instead of dumping on the .ssa dump file.
        Use own dump file instead of dumping on the .ssa dump file.
        Dump function at the end.
        Dump function at the end.
        Push and pop TV_TREE_SSA_DOMINATOR_OPTS.
        Push and pop TV_TREE_SSA_DOMINATOR_OPTS.
        * tree-ssa.c (rewrite_into_ssa): Restore check for number of times
        * tree-ssa.c (rewrite_into_ssa): Restore check for number of times
        that the rename loop has been executed.  Abort if the loop executes
        that the rename loop has been executed.  Abort if the loop executes
        more than twice.
        more than twice.
        * tree.h (enum tree_dump_index): Add TDI_dom.
        * tree.h (enum tree_dump_index): Add TDI_dom.
        * doc/invoke.texi: Document -fdump-tree-dom.
        * doc/invoke.texi: Document -fdump-tree-dom.
2003-07-21  Steven Bosscher  
2003-07-21  Steven Bosscher  
            Diego Novillo  
            Diego Novillo  
        * Makefile.in (install-po): Check if $CATALOGS is empty to avoid
        * Makefile.in (install-po): Check if $CATALOGS is empty to avoid
        buggy shells.
        buggy shells.
        * basic-block.h (rtl_verify_flow_info): Remove.
        * basic-block.h (rtl_verify_flow_info): Remove.
        (tree_verify_flow_info): Remove.
        (tree_verify_flow_info): Remove.
        (verify_flow_info): Declare.
        (verify_flow_info): Declare.
        * builtins.c: Rearrange to simplify merges.  Add #if 0 around
        * builtins.c: Rearrange to simplify merges.  Add #if 0 around
        expand_ functions that are not used in the branch and move new code
        expand_ functions that are not used in the branch and move new code
        to the end of the file.
        to the end of the file.
        * c-opts.c (c_common_handle_option): Move handling of -fdump- to
        * c-opts.c (c_common_handle_option): Move handling of -fdump- to
        opts.c.
        opts.c.
        * cfgloopmanip.c (loop_split_edge_with_NULL): Remove.  Update all
        * cfgloopmanip.c (loop_split_edge_with_NULL): Remove.  Update all
        users.
        users.
        * common.opt: Add all the tree-ssa switches.
        * common.opt: Add all the tree-ssa switches.
        * opts.c: Handle them.
        * opts.c: Handle them.
        * flags.h (flag_tree_cp): Remove unused variable.
        * flags.h (flag_tree_cp): Remove unused variable.
        (enum pta_type): Move from tree-must-alias.h
        (enum pta_type): Move from tree-must-alias.h
        (flag_tree_points_to): Likewise.
        (flag_tree_points_to): Likewise.
        * toplev.c (flag_tree_cp): Remove unused variable.
        * toplev.c (flag_tree_cp): Remove unused variable.
        * tree-cfg.c: Move cfg_hooks structures and functions for
        * tree-cfg.c: Move cfg_hooks structures and functions for
        trees from cfghooks.c.
        trees from cfghooks.c.
        * tree-mudflap.c (mudflap_enqueue_decl): Don't use %D to
        * tree-mudflap.c (mudflap_enqueue_decl): Don't use %D to
        avoid warning about format specifiers.
        avoid warning about format specifiers.
2003-07-21  Diego Novillo  
2003-07-21  Diego Novillo  
        * gimplify.c (gimplify_function_tree): Move gimplification of the
        * gimplify.c (gimplify_function_tree): Move gimplification of the
        function body ...
        function body ...
        (gimplify_body): ... here.
        (gimplify_body): ... here.
        * tree-simple.h (gimplify_body): Declare.
        * tree-simple.h (gimplify_body): Declare.
        * tree-inline.c (initialize_inlined_parameters): If the
        * tree-inline.c (initialize_inlined_parameters): If the
        emitted assignment is not in GIMPLE form, gimplify the
        emitted assignment is not in GIMPLE form, gimplify the
        body of assignments emitted.
        body of assignments emitted.
2003-07-17  Jeff Law  
2003-07-17  Jeff Law  
        * tree-dfa.c (remove_phi_arg): Update PHI_ARG_CAPACITY.
        * tree-dfa.c (remove_phi_arg): Update PHI_ARG_CAPACITY.
        * tree-ssa.c (mark_def_sites): Do not build the dominator tree here.
        * tree-ssa.c (mark_def_sites): Do not build the dominator tree here.
        (rewrite_into_ssa): Do not depend on mark_def_sites to build the
        (rewrite_into_ssa): Do not depend on mark_def_sites to build the
        dominator tree.   Move computation of dominance frontiers out
        dominator tree.   Move computation of dominance frontiers out
        of main loop (even though it was only done once).  Free immediate
        of main loop (even though it was only done once).  Free immediate
        dominator information as soon as we're done with it.
        dominator information as soon as we're done with it.
        * tree-flow.h (remove_phi_nodes_and_edges_for_unreachable_block):
        * tree-flow.h (remove_phi_nodes_and_edges_for_unreachable_block):
        Prototype.
        Prototype.
        * tree-cfg.c (remove_phi_nodes_and_edges_for_unreachable_block): New
        * tree-cfg.c (remove_phi_nodes_and_edges_for_unreachable_block): New
        function extracted from remove_bb.
        function extracted from remove_bb.
        (remove_bb): Call remove_phi_nodes_and_edges_for_unreachable_block.
        (remove_bb): Call remove_phi_nodes_and_edges_for_unreachable_block.
        * tree-ssa-dom.c (optimize_block): Propagate values into PHI nodes.
        * tree-ssa-dom.c (optimize_block): Propagate values into PHI nodes.
        Do not optimize a block which has become unreachable.
        Do not optimize a block which has become unreachable.
        If a COND_EXPR has a compile-time constant condition, then remove
        If a COND_EXPR has a compile-time constant condition, then remove
        outgoing from the COND_EXPR which can not execute.
        outgoing from the COND_EXPR which can not execute.
2003-07-16  Frank Ch. Eigler  
2003-07-16  Frank Ch. Eigler  
        * tree-mudflap.c (mx_xfn_indirect_ref): Correct source locations
        * tree-mudflap.c (mx_xfn_indirect_ref): Correct source locations
        for tracked expressions by ignoring incidental decl source loci.
        for tracked expressions by ignoring incidental decl source loci.
2003-07-16  Jeff Law  
2003-07-16  Jeff Law  
        * tree-cfg.c (remove_bb): Remove statements in reverse order.
        * tree-cfg.c (remove_bb): Remove statements in reverse order.
        Simplify code to issue warnings for unreachable code.
        Simplify code to issue warnings for unreachable code.
        * tree-ssa-dom.c (get_eq_expr_value): Also enter expressions
        * tree-ssa-dom.c (get_eq_expr_value): Also enter expressions
        into the available expression hash table.  Callers changed to
        into the available expression hash table.  Callers changed to
        pass in the block_avail_exprs varray and const_and_copies hash
        pass in the block_avail_exprs varray and const_and_copies hash
        table.
        table.
        (optimize_stmt): Allow optimization of the condition in
        (optimize_stmt): Allow optimization of the condition in
        a COND_EXPR statement.
        a COND_EXPR statement.
        (lookup_avail_expr): For COND_EXPRs, just see if their condition
        (lookup_avail_expr): For COND_EXPRs, just see if their condition
        has been recorded into the hash table, do not enter them into
        has been recorded into the hash table, do not enter them into
        the hash table.  Only do a lookup of the result in the
        the hash table.  Only do a lookup of the result in the
        const_and_copies table if it is an SSA_VAR.
        const_and_copies table if it is an SSA_VAR.
        (avail_expr_hash): Handle COND_EXPRs, specifically we only care
        (avail_expr_hash): Handle COND_EXPRs, specifically we only care
        about their condition and virtual operands.
        about their condition and virtual operands.
        (avail_expr_eq): Likewise.  If one statement has virtual operands
        (avail_expr_eq): Likewise.  If one statement has virtual operands
        and the other does not, then the expressions are not equal.
        and the other does not, then the expressions are not equal.
        * tree-ssa.c (rewrite_into_ssa): If we have done dominator
        * tree-ssa.c (rewrite_into_ssa): If we have done dominator
        optimizations, then call cleanup_tree_cfg after rewriting is
        optimizations, then call cleanup_tree_cfg after rewriting is
        complete.
        complete.
        * tree-ssa-dom.c (optimize_block): Get eq_expr_value for the
        * tree-ssa-dom.c (optimize_block): Get eq_expr_value for the
        current block rather than having it passed in by the caller.
        current block rather than having it passed in by the caller.
        Propagate eq_expr_value into the false arm of a COND_EXPR.
        Propagate eq_expr_value into the false arm of a COND_EXPR.
        (get_eq_expr_value): Return equivalences for the false
        (get_eq_expr_value): Return equivalences for the false
        arm of a COND_EXPR if requested.
        arm of a COND_EXPR if requested.
2003-07-16  Daniel Berlin  
2003-07-16  Daniel Berlin  
        * c-decl.c (store_parm_decls): Also strip NON_LVALUE_EXPRs and
        * c-decl.c (store_parm_decls): Also strip NON_LVALUE_EXPRs and
        CONVERT_EXPRs when setting DECL_NONLOCAL.
        CONVERT_EXPRs when setting DECL_NONLOCAL.
2003-07-15  Daniel Berlin  
2003-07-15  Daniel Berlin  
        * tree-cfg.c (remove_stmt): Update bb->end_tree_p properly when
        * tree-cfg.c (remove_stmt): Update bb->end_tree_p properly when
        stmt_p is the end of the bb.
        stmt_p is the end of the bb.
2003-07-15  Jeff Law  
2003-07-15  Jeff Law  
        * tree-ssa-dom.c (optimize_stmt): Consider two types equivalent if
        * tree-ssa-dom.c (optimize_stmt): Consider two types equivalent if
        their TYPE_MAIN_VARIANT is equivalent.
        their TYPE_MAIN_VARIANT is equivalent.
        (avail_expr_eq): Likewise.
        (avail_expr_eq): Likewise.
        * Makefile.in (OBJS): Add tree-ssa-dom.o
        * Makefile.in (OBJS): Add tree-ssa-dom.o
        (tree-ssa-dom.o): Add dependencies.
        (tree-ssa-dom.o): Add dependencies.
        (ssa.o, cfghooks.o): Use $(TREE_FLOW_H), not tree-flow.h.
        (ssa.o, cfghooks.o): Use $(TREE_FLOW_H), not tree-flow.h.
        * timevar.def: Add new timevar for dominator optimizer.  Reorder
        * timevar.def: Add new timevar for dominator optimizer.  Reorder
        slightly.
        slightly.
        * tree-dfa.c (add_stmt_operand): Do not consider references to
        * tree-dfa.c (add_stmt_operand): Do not consider references to
        static storage as volatile operands.
        static storage as volatile operands.
        (add_referenced_var): Static storage items reference global memory.
        (add_referenced_var): Static storage items reference global memory.
        * tree-ssa.c: Simplify by moving everything specific to the
        * tree-ssa.c: Simplify by moving everything specific to the
        dominator optimizer into tree-ssa-dom.c.  Call into the dominator
        dominator optimizer into tree-ssa-dom.c.  Call into the dominator
        optimizer after rewriting all the basic blocks.
        optimizer after rewriting all the basic blocks.
        * tree-ssa-dom.c: New file.  Mostly extracted from tree-ssa.c
        * tree-ssa-dom.c: New file.  Mostly extracted from tree-ssa.c
        * tree-flow.h (tree_ssa_dominator_optimize): Prototype.
        * tree-flow.h (tree_ssa_dominator_optimize): Prototype.
        (dump_dominator_optimization_stats): Likewise.
        (dump_dominator_optimization_stats): Likewise.
        (debug_dominator_optimization_stats): Likewise.
        (debug_dominator_optimization_stats): Likewise.
2003-07-15  Diego Novillo  
2003-07-15  Diego Novillo  
        * tree-dfa.c (add_stmt_operand): Move volatile handling...
        * tree-dfa.c (add_stmt_operand): Move volatile handling...
        (find_vars_r): ... here.
        (find_vars_r): ... here.
        Mark when the walker is inside an ASM_EXPR.
        Mark when the walker is inside an ASM_EXPR.
        (struct walk_state): Add field 'is_asm_expr'.
        (struct walk_state): Add field 'is_asm_expr'.
        Change flag fields to bitfields.
        Change flag fields to bitfields.
        (add_referenced_var): If the variable is a pointer being stored by
        (add_referenced_var): If the variable is a pointer being stored by
        an ASM_EXPR, mark it as a global memory pointer.
        an ASM_EXPR, mark it as a global memory pointer.
        * tree-flow-inline.h (is_optimizable_addr_expr): New function.
        * tree-flow-inline.h (is_optimizable_addr_expr): New function.
        * tree-flow.h (is_optimizable_addr_expr): Declare it.
        * tree-flow.h (is_optimizable_addr_expr): Declare it.
        * tree-ssa.c (rewrite_and_optimize_stmt): Use it.
        * tree-ssa.c (rewrite_and_optimize_stmt): Use it.
        (lookup_avail_expr): Likewise.
        (lookup_avail_expr): Likewise.
        (get_eq_expr_value): Likewise.
        (get_eq_expr_value): Likewise.
        (avail_expr_eq): Return 'true' when comparing a statement against
        (avail_expr_eq): Return 'true' when comparing a statement against
        itself.
        itself.
        * tree-ssa-dce.c (need_to_preserve_store): Move volatile checking...
        * tree-ssa-dce.c (need_to_preserve_store): Move volatile checking...
        (stmt_useful_p): ...here.
        (stmt_useful_p): ...here.
2003-07-15  Andreas Jaeger  
2003-07-15  Andreas Jaeger  
        * c-simplify.c: Convert prototypes to ISO C90.
        * c-simplify.c: Convert prototypes to ISO C90.
        * gimplify.c: Likewise.
        * gimplify.c: Likewise.
        * simple-break-elim.c: Likewise.
        * simple-break-elim.c: Likewise.
        * simple-goto-elim.c: Likewise.
        * simple-goto-elim.c: Likewise.
        * tree-alias-ander.c: Convert prototypes to ISO C90.
        * tree-alias-ander.c: Convert prototypes to ISO C90.
        * tree-alias-common.c: Likewise.
        * tree-alias-common.c: Likewise.
        * tree-alias-type.c: Likewise.
        * tree-alias-type.c: Likewise.
        * tree-browser.c: Likewise.
        * tree-browser.c: Likewise.
        * tree-dchain.c: Likewise.
        * tree-dchain.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-nomudflap.c: Likewise.
        * tree-nomudflap.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-simple.c: Likewise.
        * tree-simple.c: Likewise.
        * tree-alias-common.h: Convert prototypes to ISO C90, remove extra
        * tree-alias-common.h: Convert prototypes to ISO C90, remove extra
        whitespace.
        whitespace.
        * tree-alias-type.h: Convert prototypes to ISO C90.
        * tree-alias-type.h: Convert prototypes to ISO C90.
        * tree-dchain.h: Likewise.
        * tree-dchain.h: Likewise.
        * tree-flow-inline.h: Likewise.
        * tree-flow-inline.h: Likewise.
        * tree-flow.h: Likewise.
        * tree-flow.h: Likewise.
        * tree-iterator.h: Likewise.
        * tree-iterator.h: Likewise.
        * tree-mudflap.h: Likewise.
        * tree-mudflap.h: Likewise.
        * tree-simple.h: Likewise.
        * tree-simple.h: Likewise.
2003-07-14  Daniel Berlin  
2003-07-14  Daniel Berlin  
        * tree-ssa-pre.c (tree_perform_ssapre): Fix dom_children after DCE
        * tree-ssa-pre.c (tree_perform_ssapre): Fix dom_children after DCE
        breaks them.
        breaks them.
2003-07-14  Diego Novillo  
2003-07-14  Diego Novillo  
        * tree-dfa.c (add_vdef): Initialize variable 'vdef'.
        * tree-dfa.c (add_vdef): Initialize variable 'vdef'.
        (add_vuse): Initialize variable 'vuse'.
        (add_vuse): Initialize variable 'vuse'.
2003-07-14  Diego Novillo  
2003-07-14  Diego Novillo  
        Must alias analysis.  Allow the SSA rename pass to be done on a set
        Must alias analysis.  Allow the SSA rename pass to be done on a set
        of variables.
        of variables.
        * Makefile.in (OBJS): Add tree-must-alias.o.
        * Makefile.in (OBJS): Add tree-must-alias.o.
        * flags.h (flag_tree_must_alias): Declare.
        * flags.h (flag_tree_must_alias): Declare.
        * timevar.def (TV_TREE_MUST_ALIAS): Define.
        * timevar.def (TV_TREE_MUST_ALIAS): Define.
        * toplev.c (flag_tree_must_alias): Declare.
        * toplev.c (flag_tree_must_alias): Declare.
        (f_options): Add entry for -ftree-must-alias.
        (f_options): Add entry for -ftree-must-alias.
        (parse_options_and_default_flags): Enable must-alias analysis at -O1.
        (parse_options_and_default_flags): Enable must-alias analysis at -O1.
        * tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
        * tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
        addressable variables.
        addressable variables.
        * tree-dfa.c (dump_file, dump_flags): New local variables to
        * tree-dfa.c (dump_file, dump_flags): New local variables to
        replace tree_ssa_dump_file and tree_ssa_dump_flags.  Update every
        replace tree_ssa_dump_file and tree_ssa_dump_flags.  Update every
        user.
        user.
        (get_stmt_operands): Clear the array of virtual operands before
        (get_stmt_operands): Clear the array of virtual operands before
        scanning the statement.
        scanning the statement.
        (get_expr_operands): Do not add an operand for ADDR_EXPR if the
        (get_expr_operands): Do not add an operand for ADDR_EXPR if the
        expression takes the address of a VAR_DECL or a PARM_DECL.  Instead
        expression takes the address of a VAR_DECL or a PARM_DECL.  Instead
        add the variable to the list of variables whose address has been
        add the variable to the list of variables whose address has been
        taken by the statement.
        taken by the statement.
        Allow INDIRECT_REF expressions of the form *&VAR.  Convert them
        Allow INDIRECT_REF expressions of the form *&VAR.  Convert them
        into an operand for VAR.
        into an operand for VAR.
        When processing function calls, add a VUSE for .GLOBAL_VAR if the
        When processing function calls, add a VUSE for .GLOBAL_VAR if the
        function is pure but not const.
        function is pure but not const.
        (add_stmt_operand): If the operand is an ADDR_EXPR, add the
        (add_stmt_operand): If the operand is an ADDR_EXPR, add the
        variable to the list of variables whose address has been taken by
        variable to the list of variables whose address has been taken by
        the statement.
        the statement.
        (add_vdef): If the statement had virtual definitions, try to find
        (add_vdef): If the statement had virtual definitions, try to find
        an existing VDEF for the variable, to preserve SSA information.  If
        an existing VDEF for the variable, to preserve SSA information.  If
        none is found, create a new one.
        none is found, create a new one.
        (add_vuse): Likewise.
        (add_vuse): Likewise.
        (remove_all_phi_nodes_for): New function.
        (remove_all_phi_nodes_for): New function.
        (get_call_flags): New function to replace call_may_clobber.  Update
        (get_call_flags): New function to replace call_may_clobber.  Update
        all callers.
        all callers.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-mustalias.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-mustalias.
        * tree-flow-inline.h (addresses_taken): New function.
        * tree-flow-inline.h (addresses_taken): New function.
        (is_unchanging_value): New function.
        (is_unchanging_value): New function.
        * tree-flow.h (addresses_taken): Declare.
        * tree-flow.h (addresses_taken): Declare.
        (remove_all_phi_nodes): Declare.
        (remove_all_phi_nodes): Declare.
        (init_tree_ssa): Declare.
        (init_tree_ssa): Declare.
        (propagate_copy): Declare.
        (propagate_copy): Declare.
        (is_unchanging_value): Declare.
        (is_unchanging_value): Declare.
        (tree_compute_must_alias): Declare.
        (tree_compute_must_alias): Declare.
        * tree-inline.c (copy_body_r): Fold instances of *&VAR.
        * tree-inline.c (copy_body_r): Fold instances of *&VAR.
        * tree-must-alias.c: New file.
        * tree-must-alias.c: New file.
        * tree-optimize.c (optimize_function_tree): Call init_tree_ssa and
        * tree-optimize.c (optimize_function_tree): Call init_tree_ssa and
        compute_may_aliases before calling rewrite_into_ssa.
        compute_may_aliases before calling rewrite_into_ssa.
        After the SSA pass, run dead code elimination and compute
        After the SSA pass, run dead code elimination and compute
        must-aliases.
        must-aliases.
        * tree-simple.c (is_gimple_call_expr): Add comment that
        * tree-simple.c (is_gimple_call_expr): Add comment that
        is_gimple_* predicates should not have side effects.
        is_gimple_* predicates should not have side effects.
        * tree-ssa-ccp.c: Replace calls to really_constant_p with
        * tree-ssa-ccp.c: Replace calls to really_constant_p with
        is_unchanging_value everywhere.
        is_unchanging_value everywhere.
        (fold_stmt): Don't fold if the RHS is already a constant.
        (fold_stmt): Don't fold if the RHS is already a constant.
        * tree-ssa-copyprop.c (copyprop_stmt): Remove unnecessary
        * tree-ssa-copyprop.c (copyprop_stmt): Remove unnecessary
        variable 'vuse'.
        variable 'vuse'.
        Call propagate_copy to replace the operand with its new value.
        Call propagate_copy to replace the operand with its new value.
        (copyprop_phi): Remove unnecessary variable 'vuse'.
        (copyprop_phi): Remove unnecessary variable 'vuse'.
        (get_original): Remove unused parameter 'vuse_p'.
        (get_original): Remove unused parameter 'vuse_p'.
        (propagate_copy): New function.
        (propagate_copy): New function.
        * tree-ssa-dce.c (need_to_preserve_store): Update comments.
        * tree-ssa-dce.c (need_to_preserve_store): Update comments.
        * tree-ssa.c (dump_file, dump_flags): New local variables to
        * tree-ssa.c (dump_file, dump_flags): New local variables to
        replace globals tree_ssa_dump_file and tree_ssa_dump_flags.  Update
        replace globals tree_ssa_dump_file and tree_ssa_dump_flags.  Update
        all users.
        all users.
        (addr_expr_propagated_p): New local variable.
        (addr_expr_propagated_p): New local variable.
        (vars_to_rename): New local variable.
        (vars_to_rename): New local variable.
        (check_for_new_variables): New local function.
        (check_for_new_variables): New local function.
        (rewrite_into_ssa): Add new argument VARS which is a bitmap
        (rewrite_into_ssa): Add new argument VARS which is a bitmap
        representing all the variables that should be renamed into SSA.  If
        representing all the variables that should be renamed into SSA.  If
        VARS is NULL, all the variables in the program are renamed.
        VARS is NULL, all the variables in the program are renamed.
        Don't call init_tree_ssa nor compute_may_aliases.
        Don't call init_tree_ssa nor compute_may_aliases.
        Initialize all the local hash tables and bitmaps.
        Initialize all the local hash tables and bitmaps.
        Add support for repeating the SSA rename process more than once.
        Add support for repeating the SSA rename process more than once.
        If the dominator optimizations produced new symbols, repeat the
        If the dominator optimizations produced new symbols, repeat the
        process.
        process.
        (mark_def_sites): Ignore operands that are in SSA form already.
        (mark_def_sites): Ignore operands that are in SSA form already.
        (insert_phi_nodes): Only add PHI nodes for variables in the
        (insert_phi_nodes): Only add PHI nodes for variables in the
        VARS_TO_RENAME bitmap.
        VARS_TO_RENAME bitmap.
        (rewrite_block): Ignore PHI nodes that have been renamed already.
        (rewrite_block): Ignore PHI nodes that have been renamed already.
        (rewrite_and_optimize_stmt): Ignore operands that are already in
        (rewrite_and_optimize_stmt): Ignore operands that are already in
        SSA form.
        SSA form.
        When propagating ADDR_EXPR set addr_expr_propagated_p to 'true'.
        When propagating ADDR_EXPR set addr_expr_propagated_p to 'true'.
        Call propagate_copy when doing copy propagation.
        Call propagate_copy when doing copy propagation.
        Call is_unchanging_value to decide if the RHS of an assignment is a
        Call is_unchanging_value to decide if the RHS of an assignment is a
        constant.
        constant.
        (rewrite_stmt): Ignore operands that are already in SSA form.
        (rewrite_stmt): Ignore operands that are already in SSA form.
        (init_tree_ssa): Make external.
        (init_tree_ssa): Make external.
        Move initialization of local hash tables and bitmaps to
        Move initialization of local hash tables and bitmaps to
        rewrite_into_ssa.
        rewrite_into_ssa.
        (remove_annotations_r): Don't special case MODIFY_EXPR nodes.
        (remove_annotations_r): Don't special case MODIFY_EXPR nodes.
        (lookup_avail_expr): Call is_unchanging_value.
        (lookup_avail_expr): Call is_unchanging_value.
        (get_eq_expr_value): Likewise.
        (get_eq_expr_value): Likewise.
        * tree.h (enum tree_dump_index): Add TDI_must_alias.
        * tree.h (enum tree_dump_index): Add TDI_must_alias.
        * cp/optimize.c (optimize_function): Don't call the tree optimizers
        * cp/optimize.c (optimize_function): Don't call the tree optimizers
          if -fdisable-tree-ssa is given.
          if -fdisable-tree-ssa is given.
        * doc/invoke.texi: Add documentation for -ftree-must-alias.
        * doc/invoke.texi: Add documentation for -ftree-must-alias.
2003-07-07  Jeff Law  
2003-07-07  Jeff Law  
        * fold-const.c (nondestructive_fold_unary_to_constant: For BIT_NOT_EXPR
        * fold-const.c (nondestructive_fold_unary_to_constant: For BIT_NOT_EXPR
        make sure OP0 is a suitable constant before trying to fold it.
        make sure OP0 is a suitable constant before trying to fold it.
        * tree-cfg.c (handle_switch_fallthru): Set DECL_CONTEXT for
        * tree-cfg.c (handle_switch_fallthru): Set DECL_CONTEXT for
        newly created labels.
        newly created labels.
        * tree-cfg.c (move_outgoing_edges): New function.
        * tree-cfg.c (move_outgoing_edges): New function.
        (merge_tree_blocks): Use it.
        (merge_tree_blocks): Use it.
        (remove_bb): Remove the block from the pdom_info structures
        (remove_bb): Remove the block from the pdom_info structures
        as well if they exist.
        as well if they exist.
        (linearize_cond_expr): Move important edges from the then and
        (linearize_cond_expr): Move important edges from the then and
        else arms to BB as appropriately
        else arms to BB as appropriately
        * tree-cfg.c (remove_stmt): When removing a COMPOUND_EXPR, make
        * tree-cfg.c (remove_stmt): When removing a COMPOUND_EXPR, make
        sure that any basic block pointers to the arms of the COMPOUND_EXPR
        sure that any basic block pointers to the arms of the COMPOUND_EXPR
        are updated.
        are updated.
        * tree-cfg.c (make_goto_expr_edges): Computed gotos create
        * tree-cfg.c (make_goto_expr_edges): Computed gotos create
        abnormal edges.
        abnormal edges.
2003-07-05  Daniel Berlin  
2003-07-05  Daniel Berlin  
        * tree-ssa-pre.c (defs_match_p): Check for copies of the same version.
        * tree-ssa-pre.c (defs_match_p): Check for copies of the same version.
2003-07-03  Frank Ch. Eigler  
2003-07-03  Frank Ch. Eigler  
        * tree-nomudflap.c (mf_marked_p, mf_mark): New dummy functions.
        * tree-nomudflap.c (mf_marked_p, mf_mark): New dummy functions.
2003-07-03  Jeff Law  
2003-07-03  Jeff Law  
        * tree-ssa.c (lookup_avail_expr): Accept new argument containing the
        * tree-ssa.c (lookup_avail_expr): Accept new argument containing the
        const_and_copies table.  All callers changed.  If we find the
        const_and_copies table.  All callers changed.  If we find the
        given expression in the availe expression hash table, then lookup
        given expression in the availe expression hash table, then lookup
        the LHS of the hash table's entry in the const_and_copies_table.
        the LHS of the hash table's entry in the const_and_copies_table.
        Do record type casts into the available expression table.
        Do record type casts into the available expression table.
        * tree-nomudflap.c (mf_marked_p): Mark arguments as being unused.
        * tree-nomudflap.c (mf_marked_p): Mark arguments as being unused.
        (mf_mark): Likewise.
        (mf_mark): Likewise.
        * c-decl.c (store_parm_decls): Strip away NOP_EXPRs when looking
        * c-decl.c (store_parm_decls): Strip away NOP_EXPRs when looking
        for hidden use variables.
        for hidden use variables.
2003-07-02  Frank Ch. Eigler  
2003-07-02  Frank Ch. Eigler  
        * varasm.c (build_constant_desc): Propagate mudflap marked-ness
        * varasm.c (build_constant_desc): Propagate mudflap marked-ness
        across constant copying.
        across constant copying.
2003-07-02  Daniel Berlin  
2003-07-02  Daniel Berlin  
        * tree-ssa-pre.c (tree_perform_ssapre): Don't optimize things with
        * tree-ssa-pre.c (tree_perform_ssapre): Don't optimize things with
        volatile ops or making aliased loads right now.
        volatile ops or making aliased loads right now.
        (create_expr_ref): Mark the phi result of the new phi as having
        (create_expr_ref): Mark the phi result of the new phi as having
        real refs.
        real refs.
        (finalize_1): Mark the new temp as having real refs.
        (finalize_1): Mark the new temp as having real refs.
        (repair_use_injury): Ditto.
        (repair_use_injury): Ditto.
        (code_motion): Ditto.
        (code_motion): Ditto.
2003-07-01  Daniel Berlin  
2003-07-01  Daniel Berlin  
        * tree.h (struct tree_eref_common): Add injured flag.
        * tree.h (struct tree_eref_common): Add injured flag.
        Add EREF_INJURED macro.
        Add EREF_INJURED macro.
2003-07-01  Daniel Berlin  
2003-07-01  Daniel Berlin  
        * tree-flow-inline.h (stmt_ann): We have stmt_ann on E*_NODE's as well,
        * tree-flow-inline.h (stmt_ann): We have stmt_ann on E*_NODE's as well,
        so use is_essa_node as well.
        so use is_essa_node as well.
        * tree-dfa.c (create_stmt_ann): Ditto.
        * tree-dfa.c (create_stmt_ann): Ditto.
        * tree.h (is_essa_node): Declare.
        * tree.h (is_essa_node): Declare.
        * tree.c (is_essa_node): Define.
        * tree.c (is_essa_node): Define.
2003-07-01  Jason Merrill  
2003-07-01  Jason Merrill  
        * tree-cfg.c (prepend_stmt_to_bb): New fn.
        * tree-cfg.c (prepend_stmt_to_bb): New fn.
        (bsi_insert_after): Add to the beginning of an empty block.
        (bsi_insert_after): Add to the beginning of an empty block.
2003-07-01  Jeff Law  
2003-07-01  Jeff Law  
        * expr.c (expand_expr, case COND_EXPR): Correctly (?) handle
        * expr.c (expand_expr, case COND_EXPR): Correctly (?) handle
        cases where a containing block has a stack level.  Handle
        cases where a containing block has a stack level.  Handle
        cases where one arm is a GOTO_EXPR and the other arm has
        cases where one arm is a GOTO_EXPR and the other arm has
        side effects.
        side effects.
        * stmt.c (containing_blocks_have_cleanups_or_stack_level): New
        * stmt.c (containing_blocks_have_cleanups_or_stack_level): New
        function.
        function.
        (any_pending_cleanups): Further simplification.
        (any_pending_cleanups): Further simplification.
        * tree.h (containing_blocks_have_cleanups_or_stack_level): Prototype.
        * tree.h (containing_blocks_have_cleanups_or_stack_level): Prototype.
2003-06-30  Diego Novillo  
2003-06-30  Diego Novillo  
        * tree-flow.h (struct tree_ann_common_d): Remove 'stmt' field.
        * tree-flow.h (struct tree_ann_common_d): Remove 'stmt' field.
        Update all users.
        Update all users.
        (struct var_ann_d): Remove field 'has_real_refs'.  Update all callers
        (struct var_ann_d): Remove field 'has_real_refs'.  Update all callers
        with calls to SSA_NAME_HAS_REAL_REFS.
        with calls to SSA_NAME_HAS_REAL_REFS.
        Remove field 'occurs_in_abnormal_phi'.  Update all callers with
        Remove field 'occurs_in_abnormal_phi'.  Update all callers with
        calls to SSA_NAME_OCCURS_IN_ABNORMAL_PHI.
        calls to SSA_NAME_OCCURS_IN_ABNORMAL_PHI.
        * tree-flow-inline.h (var_ann): Only accept _DECL nodes.
        * tree-flow-inline.h (var_ann): Only accept _DECL nodes.
        (stmt_ann): Only accept GIMPLE statements.
        (stmt_ann): Only accept GIMPLE statements.
        (tree_stmt): Remove.  Update all users.
        (tree_stmt): Remove.  Update all users.
        * tree-cfg.c (linearize_cond_expr): Handle cases where BB doesn't
        * tree-cfg.c (linearize_cond_expr): Handle cases where BB doesn't
        have a postdominator.
        have a postdominator.
        (find_contained_blocks): Do not look inside COND_EXPR_COND nor
        (find_contained_blocks): Do not look inside COND_EXPR_COND nor
        SWITCH_COND expressions.
        SWITCH_COND expressions.
        * tree-dfa.c (get_stmt_operands): Force virtual operands on
        * tree-dfa.c (get_stmt_operands): Force virtual operands on
        ASM_EXPRs.
        ASM_EXPRs.
        (get_expr_operands): Handle SSA names when adding operands for
        (get_expr_operands): Handle SSA names when adding operands for
        memory tags.
        memory tags.
        (add_stmt_operand): Handle SSA names.
        (add_stmt_operand): Handle SSA names.
        Move checks for volatile operands earlier in the code.
        Move checks for volatile operands earlier in the code.
        (add_vdef): Re-format for readability.
        (add_vdef): Re-format for readability.
        (create_var_ann): Only allow _DECL nodes.
        (create_var_ann): Only allow _DECL nodes.
        (create_stmt_ann): Only allow GIMPLE statements.
        (create_stmt_ann): Only allow GIMPLE statements.
        (dump_variable): Handle SSA names.
        (dump_variable): Handle SSA names.
        (dump_may_aliases_for): Likewise.
        (dump_may_aliases_for): Likewise.
        (may_access_global_mem_p): Handle SSA names.
        (may_access_global_mem_p): Handle SSA names.
        (remove_phi_arg): If the argument removed was the last one with
        (remove_phi_arg): If the argument removed was the last one with
        real references, update the LHS of the PHI node.
        real references, update the LHS of the PHI node.
        (add_phi_arg): If the argument added has real references, propagate
        (add_phi_arg): If the argument added has real references, propagate
        the attribute into the LHS of the PHI node.
        the attribute into the LHS of the PHI node.
        * tree-pretty-print.c (dump_generic_node): Only retrieve basic
        * tree-pretty-print.c (dump_generic_node): Only retrieve basic
        block information from GIMPLE statements.
        block information from GIMPLE statements.
        Always output the THEN and ELSE clauses of COND_EXPR nodes.
        Always output the THEN and ELSE clauses of COND_EXPR nodes.
        * tree-simple.c (is_gimple_stmt): Accept PHI_NODEs.
        * tree-simple.c (is_gimple_stmt): Accept PHI_NODEs.
        (is_gimple_id): Accept SSA_NAMEs.
        (is_gimple_id): Accept SSA_NAMEs.
        * tree-ssa-copyprop.c (copyprop_phi): If an argument is used as a
        * tree-ssa-copyprop.c (copyprop_phi): If an argument is used as a
        real operand, propagate the attribute into the LHS of the PHI.
        real operand, propagate the attribute into the LHS of the PHI.
        * tree-ssa-live.c (create_ssa_var_map): Don't set 'used' flag on
        * tree-ssa-live.c (create_ssa_var_map): Don't set 'used' flag on
        both the operand and the result of VDEFs.
        both the operand and the result of VDEFs.
        Only register PHI results and arguments that have been used as real
        Only register PHI results and arguments that have been used as real
        operands.
        operands.
        (calculate_live_on_entry): Fix formatting in debugging message.
        (calculate_live_on_entry): Fix formatting in debugging message.
        * tree-ssa.c (register_new_def): Add new argument
        * tree-ssa.c (register_new_def): Add new argument
        'is_real_operand'.  If it's set, set SSA_NAME_HAS_REAL_REFS for the
        'is_real_operand'.  If it's set, set SSA_NAME_HAS_REAL_REFS for the
        new name.  Update all callers.
        new name.  Update all callers.
        (rewrite_operand): Add new argument 'is_real_operand'.  If it's
        (rewrite_operand): Add new argument 'is_real_operand'.  If it's
        set, set SSA_NAME_HAS_REAL_REFS to the operand.
        set, set SSA_NAME_HAS_REAL_REFS to the operand.
        (eliminate_build): Ignore PHI arguments and PHI results that have
        (eliminate_build): Ignore PHI arguments and PHI results that have
        not been used in real operands.
        not been used in real operands.
        (rewrite_vdefs): Remove.  Update all users.
        (rewrite_vdefs): Remove.  Update all users.
        (set_is_used): Don't handle SSA names.
        (set_is_used): Don't handle SSA names.
        (coalesce_ssa_name): Ignore PHI arguments that have not had real
        (coalesce_ssa_name): Ignore PHI arguments that have not had real
        references in the program.
        references in the program.
        * tree.c (make_ssa_name): Update documentation.
        * tree.c (make_ssa_name): Update documentation.
        * tree.h (IS_EMPTY_STMT): Call integer_zerop instead of comparing
        * tree.h (IS_EMPTY_STMT): Call integer_zerop instead of comparing
        against size_zero_node.
        against size_zero_node.
        (SSA_NAME_HAS_REAL_REFS): Define.
        (SSA_NAME_HAS_REAL_REFS): Define.
        (SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Define.
        (SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Define.
        (struct tree_ssa_name): Add bitfields 'has_real_refs' and
        (struct tree_ssa_name): Add bitfields 'has_real_refs' and
        'occurs_in_abnormal_phi'.
        'occurs_in_abnormal_phi'.
2003-06-30  Jeff Law  
2003-06-30  Jeff Law  
        * c-simplify.c (gimplify_c_loop): Don't return a LOOP_EXPR for
        * c-simplify.c (gimplify_c_loop): Don't return a LOOP_EXPR for
        a do ... while (0) loop.
        a do ... while (0) loop.
        * expr.c (expand_expr, case COND_EXPR): Be smarter about expanding
        * expr.c (expand_expr, case COND_EXPR): Be smarter about expanding
        a COND_EXPR with only one useful arm, which happens to be a GOTO_EXPR.
        a COND_EXPR with only one useful arm, which happens to be a GOTO_EXPR.
        * tree-cfg.c (remove_useless_stmts_and_vars): Don't remove user
        * tree-cfg.c (remove_useless_stmts_and_vars): Don't remove user
        variables unless we're at -O2 or higher.
        variables unless we're at -O2 or higher.
2003-06-30  Daniel Berlin  
2003-06-30  Daniel Berlin  
        * tree-ssa-pre.c (expr_phi_insertion): Stop optimizing the expression
        * tree-ssa-pre.c (expr_phi_insertion): Stop optimizing the expression
        if we have > some very large number of ephi operands, as it will
        if we have > some very large number of ephi operands, as it will
        take an ungodly amount of memory and time.
        take an ungodly amount of memory and time.
        (pre_expression): Push/pop gc context so we can do gc collection
        (pre_expression): Push/pop gc context so we can do gc collection
        in between expressions.
        in between expressions.
        Throw away expression info right after done optimizing it.
        Throw away expression info right after done optimizing it.
2003-06-30  Jason Merrill  
2003-06-30  Jason Merrill  
        * gimplify.c (gimplify_call_expr): Check PUSH_ARGS_REVERSED.
        * gimplify.c (gimplify_call_expr): Check PUSH_ARGS_REVERSED.
        * gimplify.c (gimplify_modify_expr): Also force a call with a
        * gimplify.c (gimplify_modify_expr): Also force a call with a
        possible nonlocal goto into a temporary.
        possible nonlocal goto into a temporary.
        (gimplify_return_expr): Don't duplicate the MODIFY_EXPR.
        (gimplify_return_expr): Don't duplicate the MODIFY_EXPR.
        * tree-iterator.h (tsi_one_before_end_p): New fn.
        * tree-iterator.h (tsi_one_before_end_p): New fn.
2003-06-29  Jeff Sturm   
2003-06-29  Jeff Sturm   
        * fold-const.c (fold): Don't save_expr unless TREE_SIDE_EFFECTS.
        * fold-const.c (fold): Don't save_expr unless TREE_SIDE_EFFECTS.
2003-06-26  Diego Novillo  
2003-06-26  Diego Novillo  
        * c-simplify.c (gimplify_stmt_expr): Handle statement-expressions
        * c-simplify.c (gimplify_stmt_expr): Handle statement-expressions
        that don't end in a non-void expression.  Emit a warning in that
        that don't end in a non-void expression.  Emit a warning in that
        case.
        case.
2003-06-26  Daniel Berlin  
2003-06-26  Daniel Berlin  
        * tree-ssa-pre.c (fixup_domchildren): Rename from
        * tree-ssa-pre.c (fixup_domchildren): Rename from
        compute_domchildren, change to not use our own array.
        compute_domchildren, change to not use our own array.
        (domchildren): Remove variable.
        (domchildren): Remove variable.
        (insert_occ_in_preorder_dt_order_1): Use dom_children now.
        (insert_occ_in_preorder_dt_order_1): Use dom_children now.
        (insert_euse_in_preorder_dt_order_1): Ditto.
        (insert_euse_in_preorder_dt_order_1): Ditto.
        (search_dt_preorder): Ditto.
        (search_dt_preorder): Ditto.
        (handle_bb_creation): Fix to work properly.
        (handle_bb_creation): Fix to work properly.
        (tree_perform_ssapre): Remove remnants of domchildren.
        (tree_perform_ssapre): Remove remnants of domchildren.
        Redo dominator info if we have to due to a new block.
        Redo dominator info if we have to due to a new block.
2003-06-26  Andrew MacLeod  
2003-06-26  Andrew MacLeod  
        * tree-cfg.c (handle_switch_split): Use a tree iterator to find the
        * tree-cfg.c (handle_switch_split): Use a tree iterator to find the
        real split point rather than a block iterator.
        real split point rather than a block iterator.
2003-06-26  Jason Merrill  
2003-06-26  Jason Merrill  
        * tree-simple.c (is_gimple_stmt): Complete.
        * tree-simple.c (is_gimple_stmt): Complete.
2003-06-24  Jeff Law  
2003-06-24  Jeff Law  
        * tree-cfg.c (remove_useless_stmts_and_vars): On the first
        * tree-cfg.c (remove_useless_stmts_and_vars): On the first
        iteration, remove unused variables from BIND_EXPRs.
        iteration, remove unused variables from BIND_EXPRs.
        * tree-flow.h (var_ann_d): Add new field USED.
        * tree-flow.h (var_ann_d): Add new field USED.
        (set_is_used): Prototype.
        (set_is_used): Prototype.
        (remove_useless_stmts_and_vars): Update prototype.
        (remove_useless_stmts_and_vars): Update prototype.
        * tree-ssa-live.c (create_ssa_var_map): Note which variables
        * tree-ssa-live.c (create_ssa_var_map): Note which variables
        are used so that we can delete those which are not used.
        are used so that we can delete those which are not used.
        * tree-ssa.c (create_temp): Mark the new temporary as being used.
        * tree-ssa.c (create_temp): Mark the new temporary as being used.
        (rewrite_out_of_ssa): Note if the call to remove_useless_stmts_and_vars
        (rewrite_out_of_ssa): Note if the call to remove_useless_stmts_and_vars
        is the first iteration or not.
        is the first iteration or not.
        (set_is_used): New function.
        (set_is_used): New function.
        * c-decl.c (store_parm_decls): Variables and parameters on the
        * c-decl.c (store_parm_decls): Variables and parameters on the
        pending_sizes chain have nonlocal uses.
        pending_sizes chain have nonlocal uses.
2003-06-25  Daniel Berlin  
2003-06-25  Daniel Berlin  
        * tree-ssa-pre.c: Convert to ISO C.
        * tree-ssa-pre.c: Convert to ISO C.
        (handle_bb_creation): New function.
        (handle_bb_creation): New function.
        (ephi_will_be_avail): Remove dead code.
        (ephi_will_be_avail): Remove dead code.
        (finalize_1): Use handle_bb_creation, start to fix edge insertion
        (finalize_1): Use handle_bb_creation, start to fix edge insertion
        related fun.
        related fun.
        (maybe_find_rhs_use_for_var): Stop using tree_stmt.
        (maybe_find_rhs_use_for_var): Stop using tree_stmt.
        (code_motion): Always get the temporary from the right place.
        (code_motion): Always get the temporary from the right place.
2003-06-24  Jason Merrill  
2003-06-24  Jason Merrill  
        * gimplify.c (gimplify_self_mod_expr): Add want_value parm.
        * gimplify.c (gimplify_self_mod_expr): Add want_value parm.
        For postfix ops, make sure it returns an rvalue.
        For postfix ops, make sure it returns an rvalue.
        (gimplify_expr): Copy a volatile reference into a temp.
        (gimplify_expr): Copy a volatile reference into a temp.
        (create_tmp_var): Require a complete type.
        (create_tmp_var): Require a complete type.
        (create_tmp_alias_var): Use TYPE_VOLATILE on types.
        (create_tmp_alias_var): Use TYPE_VOLATILE on types.
        * tree-simple.c (is_gimple_stmt): Flesh out a bit.
        * tree-simple.c (is_gimple_stmt): Flesh out a bit.
        (is_gimple_val): Don't allow volatiles.
        (is_gimple_val): Don't allow volatiles.
        * c-simplify.c (gimplify_expr_stmt): Don't insert a null pointer.
        * c-simplify.c (gimplify_expr_stmt): Don't insert a null pointer.
        * gimplify.c (gimplify_return_expr): Search through the gimple
        * gimplify.c (gimplify_return_expr): Search through the gimple
        form for the interesting MODIFY_EXPR.
        form for the interesting MODIFY_EXPR.
        (gimplify_modify_expr): Don't suppress posteffects if want_value.
        (gimplify_modify_expr): Don't suppress posteffects if want_value.
2003-06-24  Diego Novillo  
2003-06-24  Diego Novillo  
        * tree-dfa.c (struct dfa_stats_d): Remove obsolete fields
        * tree-dfa.c (struct dfa_stats_d): Remove obsolete fields
        num_tree_refs and size_tree_refs.  Update all users.
        num_tree_refs and size_tree_refs.  Update all users.
        (dump_dfa_stats): Also dump information about VUSE and VDEF
        (dump_dfa_stats): Also dump information about VUSE and VDEF
        operands.
        operands.
        * tree-ssa.c (rewrite_vdefs): Dump information about VDEF operators
        * tree-ssa.c (rewrite_vdefs): Dump information about VDEF operators
        promoted to real copies if -fdump-tree-optimized-details is given.
        promoted to real copies if -fdump-tree-optimized-details is given.
2003-06-23  Jeff Law  
2003-06-23  Jeff Law  
        * tree-ssa.c (avail_expr_eq): Verify types are the same before
        * tree-ssa.c (avail_expr_eq): Verify types are the same before
        handing expressions to operand_equal_p.
        handing expressions to operand_equal_p.
        * tree-cfg.c (make_edges): Remove fake edges before building
        * tree-cfg.c (make_edges): Remove fake edges before building
        extra edges for TRY_FINALLY_EXPRs.  Delete unnecessary edges
        extra edges for TRY_FINALLY_EXPRs.  Delete unnecessary edges
        leaving the TRY block in a TRY_FINALLY_EXPR.
        leaving the TRY block in a TRY_FINALLY_EXPR.
        (find_contained_blocks): Don't consider statements in the CATCH
        (find_contained_blocks): Don't consider statements in the CATCH
        clause of a TRY_CATCH_EXPR when noting the last statement in
        clause of a TRY_CATCH_EXPR when noting the last statement in
        the block.
        the block.
        * tree-dfa.c (remove_phi_arg): If we removed the last PHI argument,
        * tree-dfa.c (remove_phi_arg): If we removed the last PHI argument,
        then remove the entire PHI node.
        then remove the entire PHI node.
        * tree-ssa-dce.c (stmt_useful_p): Consider the other EH related
        * tree-ssa-dce.c (stmt_useful_p): Consider the other EH related
        nodes useful as well (TRY_FINALLY_EXPR, TRY_CATCH_EXPR, and
        nodes useful as well (TRY_FINALLY_EXPR, TRY_CATCH_EXPR, and
        EH_FILTER_EXPR).
        EH_FILTER_EXPR).
        * tree-cfg.c (remove_useless_stmts_and_vars): If the body of a
        * tree-cfg.c (remove_useless_stmts_and_vars): If the body of a
        TRY_CATCH_EXPR is empty, then the entire TRY_CATCH_EXPR can
        TRY_CATCH_EXPR is empty, then the entire TRY_CATCH_EXPR can
        be safely removed.
        be safely removed.
        * tree-cfg.c (find_contained_blocks): Renamed from
        * tree-cfg.c (find_contained_blocks): Renamed from
        find_contained_blocks_and_edge_targets.  Remove targets
        find_contained_blocks_and_edge_targets.  Remove targets
        bitmap argument and no longer record targets of edges.
        bitmap argument and no longer record targets of edges.
        All callers changed.
        All callers changed.
        (make_edges): No longer need TRY_TARGETS bitmap.  Kill it.
        (make_edges): No longer need TRY_TARGETS bitmap.  Kill it.
        Simplify code which creates additional edges out of the TRY
        Simplify code which creates additional edges out of the TRY
        block and the FINALLY block in a TRY_FINALLY_EXPR.
        block and the FINALLY block in a TRY_FINALLY_EXPR.
2003-06-23  Diego Novillo  
2003-06-23  Diego Novillo  
        * tree-alias-common.c (ptr_may_alias_var): Don't handle memory
        * tree-alias-common.c (ptr_may_alias_var): Don't handle memory
        tags.
        tags.
        * tree-dfa.c (struct alias_set_d): Remove.  Update all users.
        * tree-dfa.c (struct alias_set_d): Remove.  Update all users.
        (alias_sets): Remove.  Update all users.
        (alias_sets): Remove.  Update all users.
        (struct walk_state): Remove field aliased_objects_found.
        (struct walk_state): Remove field aliased_objects_found.
        (struct alias_map_d): New.
        (struct alias_map_d): New.
        (addressable_vars): New local variable.
        (addressable_vars): New local variable.
        (pointers): New local variable.
        (pointers): New local variable.
        (add_stmt_operand): Do not force aliased variables to be in virtual
        (add_stmt_operand): Do not force aliased variables to be in virtual
        operands.
        operands.
        (register_alias_set): Remove.  Update all users.
        (register_alias_set): Remove.  Update all users.
        (find_alias_for): Remove.  Update all users.
        (find_alias_for): Remove.  Update all users.
        (get_memory_tag_for): New local function.
        (get_memory_tag_for): New local function.
        (num_referenced_vars): Remove.
        (num_referenced_vars): Remove.
        (num_aliased_objects): Remove.  Update all users.
        (num_aliased_objects): Remove.  Update all users.
        (aliased_objects): Remove.  Update all users.
        (aliased_objects): Remove.  Update all users.
        (aliased_objects_alias_set): Remove.  Update all users.
        (aliased_objects_alias_set): Remove.  Update all users.
        (num_call_clobbered_vars): Remove.  Update all users.
        (num_call_clobbered_vars): Remove.  Update all users.
        (dump_variable): Move code to dump aliases ...
        (dump_variable): Move code to dump aliases ...
        (dump_may_aliases_for): ... here.
        (dump_may_aliases_for): ... here.
        (debug_may_aliases_for): New function.
        (debug_may_aliases_for): New function.
        (compute_may_aliases): Initialize 'addressable_vars' and 'pointers'
        (compute_may_aliases): Initialize 'addressable_vars' and 'pointers'
        arrays.
        arrays.
        (compute_alias_sets): Re-implement matching pointers with
        (compute_alias_sets): Re-implement matching pointers with
        addressable variables.  Limit the size of may-alias sets.
        addressable variables.  Limit the size of may-alias sets.
        (may_alias_p): Re-implement to compare pointers against variables,
        (may_alias_p): Re-implement to compare pointers against variables,
        instead of memory tags.
        instead of memory tags.
        (dump_alias_info): Re-implement to display pointers and addresable
        (dump_alias_info): Re-implement to display pointers and addresable
        variables arrays.
        variables arrays.
        (add_referenced_var): Collect addressable variables and pointers.
        (add_referenced_var): Collect addressable variables and pointers.
        Share memory tags among pointers that may alias each other.
        Share memory tags among pointers that may alias each other.
        * tree-flow.h (num_referenced_vars): Change to macro.
        * tree-flow.h (num_referenced_vars): Change to macro.
        (referenced_var): Likewise.
        (referenced_var): Likewise.
        (num_call_clobbered_vars): Likewise.
        (num_call_clobbered_vars): Likewise.
        (call_clobbered_var): Likewise.
        (call_clobbered_var): Likewise.
        (dump_may_aliases_for): Declare.
        (dump_may_aliases_for): Declare.
        (debug_may_aliases_for): Declare.
        (debug_may_aliases_for): Declare.
        * tree-ssa.c (rewrite_vdefs): New local function.
        * tree-ssa.c (rewrite_vdefs): New local function.
        (rewrite_out_of_ssa): Call it.
        (rewrite_out_of_ssa): Call it.
2003-06-23  Jeff Law  
2003-06-23  Jeff Law  
        * tree-cfg.c (make_edges): Walk TRY_FINALLYs inner to outer and
        * tree-cfg.c (make_edges): Walk TRY_FINALLYs inner to outer and
        simplify creation of special edges related to the TRY_FINALLY_EXPR.
        simplify creation of special edges related to the TRY_FINALLY_EXPR.
        * tree-cfg.c (remove_useless_stmts_and_vars): More aggressively
        * tree-cfg.c (remove_useless_stmts_and_vars): More aggressively
        remove TRY_CATCH_EXPRs and TRY_FINALLY_EXPRs.
        remove TRY_CATCH_EXPRs and TRY_FINALLY_EXPRs.
        * tree-cfg.c (make_edges): Remove fake edges.
        * tree-cfg.c (make_edges): Remove fake edges.
        (make_exit_edges): Mark edges from nonreturning functions to the
        (make_exit_edges): Mark edges from nonreturning functions to the
        exit block as being fake edges.
        exit block as being fake edges.
        * gimplify.c (gimplify_modify_expr): Don't create a new MODIFY_EXPR,
        * gimplify.c (gimplify_modify_expr): Don't create a new MODIFY_EXPR,
        reuse the existing one.
        reuse the existing one.
2003-06-23  Andrew MacLeod  
2003-06-23  Andrew MacLeod  
        * tree-cfg.c (find_insert_location): Default case should insert after
        * tree-cfg.c (find_insert_location): Default case should insert after
        the last stmt in the block.
        the last stmt in the block.
2003-06-22  Jeff Sturm  
2003-06-22  Jeff Sturm  
        * Makefile.in (old-tree-inline.o): Remove rule.
        * Makefile.in (old-tree-inline.o): Remove rule.
        * old-tree-inline.c: Remove.
        * old-tree-inline.c: Remove.
2003-06-19  Jeff Law  
2003-06-19  Jeff Law  
        * tree-cfg.c (make_ctrl_stmt_edges): Do not create bogus edges
        * tree-cfg.c (make_ctrl_stmt_edges): Do not create bogus edges
        to the successor block of TRY_CATCH_EXPR, TRY_FINALLY_EXPR,
        to the successor block of TRY_CATCH_EXPR, TRY_FINALLY_EXPR,
        CATCH_EXPR or EH_FILTER_EXPR nodes.
        CATCH_EXPR or EH_FILTER_EXPR nodes.
        * gimplify.c (gimplify_modify_expr): If the RHS of an MODIFY_EXPR
        * gimplify.c (gimplify_modify_expr): If the RHS of an MODIFY_EXPR
        might throw, then make sure its result goes into a temporary.
        might throw, then make sure its result goes into a temporary.
        * tree-cfg.c (handle_switch_split): Handle case where target
        * tree-cfg.c (handle_switch_split): Handle case where target
        block has only one statement (the case label itself).
        block has only one statement (the case label itself).
2003-06-19  Diego Novillo  
2003-06-19  Diego Novillo  
        * doc/invoke.texi: Add documentation for -ftree-dominator-opts
        * doc/invoke.texi: Add documentation for -ftree-dominator-opts
        that was missing from an earlier patch.
        that was missing from an earlier patch.
2003-06-19  Jeff Sturm  
2003-06-19  Jeff Sturm  
        * gimplify.c (gimplify_expr): Handle LABELED_BLOCK_EXPR
        * gimplify.c (gimplify_expr): Handle LABELED_BLOCK_EXPR
        and EXIT_BLOCK_EXPR.
        and EXIT_BLOCK_EXPR.
        (gimplify_labeled_block_expr): New function.
        (gimplify_labeled_block_expr): New function.
        (gimplify_exit_block_expr): New function.
        (gimplify_exit_block_expr): New function.
2003-06-18  Andrew MacLeod  
2003-06-18  Andrew MacLeod  
        * tree-cfg.c (EDGE_INSERT_LOCATION_BSI_AFTER): New location code.
        * tree-cfg.c (EDGE_INSERT_LOCATION_BSI_AFTER): New location code.
        (cleanup_switch_expr_graph): Find default case correctly.
        (cleanup_switch_expr_graph): Find default case correctly.
        (bsi_insert_after): Get BB from stmt when its avialble.
        (bsi_insert_after): Get BB from stmt when its avialble.
        (bsi_insert_before): Get BB from stmt when its avialble.
        (bsi_insert_before): Get BB from stmt when its avialble.
        (handle_switch_fallthru): New. Handle edge from switch to the fallthru.
        (handle_switch_fallthru): New. Handle edge from switch to the fallthru.
        (handle_switch_split): Re-implement using new scheme.
        (handle_switch_split): Re-implement using new scheme.
        (find_insert_location): Use handle_switch_fallthru ().
        (find_insert_location): Use handle_switch_fallthru ().
        (bsi_insert_on_edge_immediate): Handle EDGE_INSERT_LOCATION_BSI_AFTER.
        (bsi_insert_on_edge_immediate): Handle EDGE_INSERT_LOCATION_BSI_AFTER.
        * tree-iterator.h (tsi_last): New. Find last stmt in a chain.
        * tree-iterator.h (tsi_last): New. Find last stmt in a chain.
2003-06-17  Daniel Berlin  
2003-06-17  Daniel Berlin  
        * tree-alias-common.c (find_func_aliases): Guard cast op
        * tree-alias-common.c (find_func_aliases): Guard cast op
        properly.
        properly.
        (ptr_may_alias_var): Small optimization to avoid calling
        (ptr_may_alias_var): Small optimization to avoid calling
        decl_function_context so often.
        decl_function_context so often.
        * tree-alias-ander.c (ander_simple_assign): Ignore if lhs == rhs.
        * tree-alias-ander.c (ander_simple_assign): Ignore if lhs == rhs.
2003-06-17  Steven Bosscher  
2003-06-17  Steven Bosscher  
        * timevar.def (TV_TREE_BUILD_FUD_CHAINS): Remove.
        * timevar.def (TV_TREE_BUILD_FUD_CHAINS): Remove.
2003-06-16  Diego Novillo  
2003-06-16  Diego Novillo  
        * tree-ssa-ccp.c (DONT_SIMULATE_AGAIN): Define.
        * tree-ssa-ccp.c (DONT_SIMULATE_AGAIN): Define.
        (visit_phi_node): Don't do anything if the PHI node doesn't need to
        (visit_phi_node): Don't do anything if the PHI node doesn't need to
        be simulated.
        be simulated.
        If the PHI variable does not have real references, consider it
        If the PHI variable does not have real references, consider it
        VARYING.
        VARYING.
        If the PHI node has a lattice value of VARYING, set
        If the PHI node has a lattice value of VARYING, set
        DONT_SIMULATE_AGAIN.
        DONT_SIMULATE_AGAIN.
        (visit_stmt): Don't do anything if the statement doesn't need to be
        (visit_stmt): Don't do anything if the statement doesn't need to be
        simulated.
        simulated.
        Only visit conditional branches COND_EXPR and SWITCH_EXPR.
        Only visit conditional branches COND_EXPR and SWITCH_EXPR.
        If the statement doesn't produce a result mark it with
        If the statement doesn't produce a result mark it with
        DONT_SIMULATE_AGAIN.
        DONT_SIMULATE_AGAIN.
        (visit_assignment): Remove unnecessary def_op() check.
        (visit_assignment): Remove unnecessary def_op() check.
        If the value is VARYING, mark the statement with
        If the value is VARYING, mark the statement with
        DONT_SIMULATE_AGAIN.
        DONT_SIMULATE_AGAIN.
        (visit_cond_stmt): Remove unnecessary is_ctrl_stmt() check.
        (visit_cond_stmt): Remove unnecessary is_ctrl_stmt() check.
        If the predicate is VARYING, mark the statement with
        If the predicate is VARYING, mark the statement with
        DONT_SIMULATE_AGAIN.
        DONT_SIMULATE_AGAIN.
        (initialize): Clear DONT_SIMULATE_AGAIN flag for every statement
        (initialize): Clear DONT_SIMULATE_AGAIN flag for every statement
        and PHI node.
        and PHI node.
        (likely_value): Get statement operands after checking if it makes
        (likely_value): Get statement operands after checking if it makes
        aliased loads or has volatile operands.
        aliased loads or has volatile operands.
2003-06-16  Jeff Law  
2003-06-16  Jeff Law  
            Jason Merrill  
            Jason Merrill  
        * except.c (enum eh_region_type): Don't declare the enumeration
        * except.c (enum eh_region_type): Don't declare the enumeration
        members here.  Instead do it in except.h.
        members here.  Instead do it in except.h.
        (expand_eh_hander): Use expr_first instead of open-coding it.
        (expand_eh_hander): Use expr_first instead of open-coding it.
        * except.h (enum eh_region_type): Define the enumeration memebers
        * except.h (enum eh_region_type): Define the enumeration memebers
        here.
        here.
        * tree-cfg.c (last_exec_block): Break out from make_edges.
        * tree-cfg.c (last_exec_block): Break out from make_edges.
        (could_trap_p): No longer static.
        (could_trap_p): No longer static.
        (get_eh_region_type): New function.
        (get_eh_region_type): New function.
        (make_try_expr_blocks): Keep the whole TRY_CATCH_EXPR or
        (make_try_expr_blocks): Keep the whole TRY_CATCH_EXPR or
        TRY_FINALLY_EXPR instead of just the handler part in the
        TRY_FINALLY_EXPR instead of just the handler part in the
        EH_STACK varray.  For a cleanup, record which cleanup higher
        EH_STACK varray.  For a cleanup, record which cleanup higher
        in the EH_STACK it can reach.
        in the EH_STACK it can reach.
        (make_edges): Use last_exec_block.
        (make_edges): Use last_exec_block.
        (make_ctrl_stmt_edges): Thread cleanups as needed.
        (make_ctrl_stmt_edges): Thread cleanups as needed.
        (compute_reachable_eh):  Use get_eh_region_type.  Properly
        (compute_reachable_eh):  Use get_eh_region_type.  Properly
        track when we can skip cleanups.  Skip cleanups when possible.
        track when we can skip cleanups.  Skip cleanups when possible.
        * tree-flow.h (could_trap_p): Prototype.
        * tree-flow.h (could_trap_p): Prototype.
2003-06-16  Andrew Macleod  
2003-06-16  Andrew Macleod  
        * tree-cfg.c (find_insert_location): Check for control_altering stmts,
        * tree-cfg.c (find_insert_location): Check for control_altering stmts,
        and abort if its an unrecognized BB ending stmt.
        and abort if its an unrecognized BB ending stmt.
        (bsi_commit_first_edge_insert): Rename to bsi_insert_on_edge_immediate,
        (bsi_commit_first_edge_insert): Rename to bsi_insert_on_edge_immediate,
        externalize, and change the interface to an on-demand inserter.
        externalize, and change the interface to an on-demand inserter.
        (bsi_commit_edge_inserts): Call bsi_insert_on_edge_immediate().
        (bsi_commit_edge_inserts): Call bsi_insert_on_edge_immediate().
        * tree-flow.h (bsi_insert_on_edge_immediate): Prototype.
        * tree-flow.h (bsi_insert_on_edge_immediate): Prototype.
        * tree-pretty-print.c (dump_block_info): Add 'ab' for abnormal edges.
        * tree-pretty-print.c (dump_block_info): Add 'ab' for abnormal edges.
        * tree-ssa-dce.c (process_worklist): Use sparse bitmaps.
        * tree-ssa-dce.c (process_worklist): Use sparse bitmaps.
        * tree-ssa-live.c (calculate_live_on_entry): Abort if ssa_name has a
        * tree-ssa-live.c (calculate_live_on_entry): Abort if ssa_name has a
        definition, but is also live on entry.
        definition, but is also live on entry.
        * tree-ssa.c (coalesce_ssa_name): Call abort() instead of error(), and
        * tree-ssa.c (coalesce_ssa_name): Call abort() instead of error(), and
        provide more detailed info.
        provide more detailed info.
        (rewrite_out_of_ssa): Provide CFG dumps before and after rewritting.
        (rewrite_out_of_ssa): Provide CFG dumps before and after rewritting.
2003-06-16  Frank Ch. Eigler  
2003-06-16  Frank Ch. Eigler  
        * tree-mudflap.c (mf_mark): Use GC-compatible htab_create_ggc.
        * tree-mudflap.c (mf_mark): Use GC-compatible htab_create_ggc.
2003-06-15  Jeff Law  
2003-06-15  Jeff Law  
        * tree-ssa-ccp.c (visit_phi_node): If the PHI is already known
        * tree-ssa-ccp.c (visit_phi_node): If the PHI is already known
        to be varying, don't recompute its value.
        to be varying, don't recompute its value.
2003-06-14  Jeff Law  
2003-06-14  Jeff Law  
            Jason Merrill 
            Jason Merrill 
        * tree-cfg.c (make_blocks): Do not return early if presented
        * tree-cfg.c (make_blocks): Do not return early if presented
        with an empty statement.
        with an empty statement.
        (make_ctrl_stmt_edges):  Do not try to optimize an empty TRY
        (make_ctrl_stmt_edges):  Do not try to optimize an empty TRY
        block in a TRY_FINALLY_EXPR.  Simplify TRY_FINALLY_EXPR,
        block in a TRY_FINALLY_EXPR.  Simplify TRY_FINALLY_EXPR,
        TRY_CATCH_EXPR, CATCH_EXPR, and EH_FILTER_EXPR now that empty
        TRY_CATCH_EXPR, CATCH_EXPR, and EH_FILTER_EXPR now that empty
        statements are no longer shared.
        statements are no longer shared.
2003-06-14  Kazu Hirata  
2003-06-14  Kazu Hirata  
        * tree-ssa-pre.c: Fix a comment typo.
        * tree-ssa-pre.c: Fix a comment typo.
2003-06-13  Diego Novillo  
2003-06-13  Diego Novillo  
        * tree-dfa.c (get_stmt_operands): Abort if the statement is a
        * tree-dfa.c (get_stmt_operands): Abort if the statement is a
        variable.
        variable.
        (create_var_ann): Abort if the variable is not a _DECL node.
        (create_var_ann): Abort if the variable is not a _DECL node.
2003-06-13  Frank Ch. Eigler  
2003-06-13  Frank Ch. Eigler  
        * tree-mudflap.c (mudflap_c_function): Change calling conventions so
        * tree-mudflap.c (mudflap_c_function): Change calling conventions so
        as to return the instrumented function body rather than changing the
        as to return the instrumented function body rather than changing the
        given fndecl in place.  Gimplify at the very end, for cosmetic
        given fndecl in place.  Gimplify at the very end, for cosmetic
        reasons.
        reasons.
        * tree-mudflap.h, tree-nomudflap.c: Corresponding changes.
        * tree-mudflap.h, tree-nomudflap.c: Corresponding changes.
        * c-decl.c (c_expand_body_1): Call mudflap_c_function just before
        * c-decl.c (c_expand_body_1): Call mudflap_c_function just before
        rtl expansion of function body; don't interfere with inlining.
        rtl expansion of function body; don't interfere with inlining.
2003-06-13  Diego Novillo  
2003-06-13  Diego Novillo  
        * c-simplify.c: Fix typo in previous change.
        * c-simplify.c: Fix typo in previous change.
2003-06-13  Diego Novillo  
2003-06-13  Diego Novillo  
        * c-common.c, c-common.h, c-decl.c, c-lang.c, c-simplify.c,
        * c-common.c, c-common.h, c-decl.c, c-lang.c, c-simplify.c,
        flags.h, gimplify.c, langhooks-def.h, langhooks.c, langhooks.h,
        flags.h, gimplify.c, langhooks-def.h, langhooks.c, langhooks.h,
        simple-break-elim.c, simple-goto-elim.c, toplev.c,
        simple-break-elim.c, simple-goto-elim.c, toplev.c,
        tree-alias-common.c, tree-cfg.c, tree-dfa.c, tree-dump.c,
        tree-alias-common.c, tree-cfg.c, tree-dfa.c, tree-dump.c,
        tree-inline.c, tree-mudflap.c, tree-simple.c, tree-simple.h,
        tree-inline.c, tree-mudflap.c, tree-simple.c, tree-simple.h,
        tree-ssa-ccp.c, tree-ssa-pre.c, tree-ssa.c, tree.h, doc/invoke.texi:
        tree-ssa-ccp.c, tree-ssa-pre.c, tree-ssa.c, tree.h, doc/invoke.texi:
        Rename SIMPLE to GIMPLE everywhere.
        Rename SIMPLE to GIMPLE everywhere.
2003-06-13  Andrew MacLeod  
2003-06-13  Andrew MacLeod  
        * tree-cfg.c (bsi_commit_first_edge_insert): Only consider non-abnormal
        * tree-cfg.c (bsi_commit_first_edge_insert): Only consider non-abnormal
        edges when determining whether an edge needs to be split.
        edges when determining whether an edge needs to be split.
        * tree-ssa-dce.c (process_worklist): When checking for GOTO and
        * tree-ssa-dce.c (process_worklist): When checking for GOTO and
        COND_EXPR's that are necessary, check each BB's predecessors only once.
        COND_EXPR's that are necessary, check each BB's predecessors only once.
2003-06-12  Jeff Law  
2003-06-12  Jeff Law  
        * tree-ssa.c (avail_expr_eq): Add some checking code to
        * tree-ssa.c (avail_expr_eq): Add some checking code to
        detect when equal expressions have different hash values.
        detect when equal expressions have different hash values.
        * tree.c (iterative_hash_expr): Don't hash types associated
        * tree.c (iterative_hash_expr): Don't hash types associated
        with conversions.  Instead hash on the signedness of the
        with conversions.  Instead hash on the signedness of the
        toplevel object and the operand of the conversion.
        toplevel object and the operand of the conversion.
        * Makefile.in (gimplify.o): Depend on $(RTL_H).  Ugh.
        * Makefile.in (gimplify.o): Depend on $(RTL_H).  Ugh.
        * gimplify.c: Include "rtl.h".
        * gimplify.c: Include "rtl.h".
        (simplify_call_expr): Use call_expr_flags and check for ECF_CONST
        (simplify_call_expr): Use call_expr_flags and check for ECF_CONST
        rather than checking bits in the tree node directly.
        rather than checking bits in the tree node directly.
        * fold-const.c (operand_equal_p): CALL_EXPRs with side effects
        * fold-const.c (operand_equal_p): CALL_EXPRs with side effects
        are never equal.
        are never equal.
2003-06-11  Frank Ch. Eigler  
2003-06-11  Frank Ch. Eigler  
        * gcc.c (MFWRAP_SPEC): Always wrap main().
        * gcc.c (MFWRAP_SPEC): Always wrap main().
        * tree-mudflap.c (mudflap_enqueue_decl): Mark enqueued decls
        * tree-mudflap.c (mudflap_enqueue_decl): Mark enqueued decls
        to prevent their repeated processing.
        to prevent their repeated processing.
2003-06-11  Daniel Berlin  
2003-06-11  Daniel Berlin  
        * tree-ssa-pre.c: add graph_dump_file, graph_dump_flags.
        * tree-ssa-pre.c: add graph_dump_file, graph_dump_flags.
        (finalize_1): Modify to use temporary in expr_info structure,
        (finalize_1): Modify to use temporary in expr_info structure,
        remove temporary from arguments.
        remove temporary from arguments.
        Use bsi_insert_on_edge for ephi insertions.
        Use bsi_insert_on_edge for ephi insertions.
        Set EREF_TEMP on inserted euses.
        Set EREF_TEMP on inserted euses.
        (repair_phi_injury): Note (to dump file)  injuries we have
        (repair_phi_injury): Note (to dump file)  injuries we have
        repaired already.
        repaired already.
        (repair_use_injury): Ditto.
        (repair_use_injury): Ditto.
        (repair_euse_injury): Ditto.
        (repair_euse_injury): Ditto.
        (count_stmts_in_bb): Count both forwards and backwards, and make
        (count_stmts_in_bb): Count both forwards and backwards, and make
        sure the numbers agree. This makes sure both the head and end are
        sure the numbers agree. This makes sure both the head and end are
        updated properly.
        updated properly.
        (code_motion): Use the EREF_TEMP, rather than calculating the
        (code_motion): Use the EREF_TEMP, rather than calculating the
        reaching def, when possible, because it's faster.
        reaching def, when possible, because it's faster.
        Add the phi we created when we insert the ephi.  We should always
        Add the phi we created when we insert the ephi.  We should always
        be able to get the reaching def of the ephi from EREF_TEMP (since
        be able to get the reaching def of the ephi from EREF_TEMP (since
        the args should have already been inserted, or in the case of
        the args should have already been inserted, or in the case of
        phi's, have a phi already allocated), so abort if we can't.
        phi's, have a phi already allocated), so abort if we can't.
        (create_expr_ref): Take expr_info parameter.  Make a phi for the
        (create_expr_ref): Take expr_info parameter.  Make a phi for the
        ephi's, but don't add to the bb yet. Update all callers.
        ephi's, but don't add to the bb yet. Update all callers.
        (get_default_def): New function.
        (get_default_def): New function.
        (get_reaching_def): Use it to find the default def when we hit the
        (get_reaching_def): Use it to find the default def when we hit the
        top of the dom tree.
        top of the dom tree.
        (struct expr_info): Add temp.
        (struct expr_info): Add temp.
        (new_rename_1): Dump out occurrences after rename 1, but before
        (new_rename_1): Dump out occurrences after rename 1, but before
        rename 2.
        rename 2.
        (requires_edge_placement): Now that we can insert on edges, we
        (requires_edge_placement): Now that we can insert on edges, we
        shouldn't need this, so make it always return false.
        shouldn't need this, so make it always return false.
        Will remove unless something bad comes up.
        Will remove unless something bad comes up.
        (pre_expression): Start working on dumping the redundancy graph.
        (pre_expression): Start working on dumping the redundancy graph.
        * tree.h (struct treeeref_common): Add the temp member.
        * tree.h (struct treeeref_common): Add the temp member.
        Add EREF_TEMP macro.
        Add EREF_TEMP macro.
        (tree_dump_index): Reorder to match actual optimization order.
        (tree_dump_index): Reorder to match actual optimization order.
        Add TDI_predot.
        Add TDI_predot.
        * tree-dump.c: Ditto.
        * tree-dump.c: Ditto.
2003-06-11  Jeff Law  
2003-06-11  Jeff Law  
        * gimplify.c (simplify_call_expr): Clear TREE_SIDE_EFFECTS for
        * gimplify.c (simplify_call_expr): Clear TREE_SIDE_EFFECTS for
        calls to "const" functions.
        calls to "const" functions.
        * tree-inline.c (expand_call_inline): Recalculate TREE_SIDE_EFFECTS
        * tree-inline.c (expand_call_inline): Recalculate TREE_SIDE_EFFECTS
        properly when inlining gimplified functions.
        properly when inlining gimplified functions.
        * fold-const.c (operand_equal_p): Handle CALL_EXPRs.
        * fold-const.c (operand_equal_p): Handle CALL_EXPRs.
        * tree-cfg.c (first_exec_block): Kill.
        * tree-cfg.c (first_exec_block): Kill.
        (make_edges): Use bb_for_stmt rather than first_exec_block.
        (make_edges): Use bb_for_stmt rather than first_exec_block.
        (make_ctrl_stmt_edges, make_exit_edges): Likewise.
        (make_ctrl_stmt_edges, make_exit_edges): Likewise.
        (make_loop_expr_edges, make_cond_expr_edges): Likewise.
        (make_loop_expr_edges, make_cond_expr_edges): Likewise.
        (successor_block): Don't skip empty statements.
        (successor_block): Don't skip empty statements.
        * tree-ssa.c (rewrite_and_optimize_stmt): Do not special case
        * tree-ssa.c (rewrite_and_optimize_stmt): Do not special case
        CALL_EXPRs they're caught by the TREE_SIDE_EFFECTS test.
        CALL_EXPRs they're caught by the TREE_SIDE_EFFECTS test.
        * tree-ssa.c (rewrite_and_optimize_stmt): Improve/correct setting of
        * tree-ssa.c (rewrite_and_optimize_stmt): Improve/correct setting of
        may_optimize_p.  Simplify later code knowing may_optimize_p is
        may_optimize_p.  Simplify later code knowing may_optimize_p is
        correctly set.
        correctly set.
        (avail_expr_hash): Do not use iterative_hash_object or deal with
        (avail_expr_hash): Do not use iterative_hash_object or deal with
        SSA names for real operands.  Instead use iterative_hash_expr
        SSA names for real operands.  Instead use iterative_hash_expr
        which handles both.
        which handles both.
        (avail_expr_eq): Use operand_equal_p to test for equality.
        (avail_expr_eq): Use operand_equal_p to test for equality.
2003-06-11  Steven Bosscher  
2003-06-11  Steven Bosscher  
        * tree-flow.h, tree-ssa-ccp.c, tree-ssa-copyprop.c,
        * tree-flow.h, tree-ssa-ccp.c, tree-ssa-copyprop.c,
        tree-ssa-dce.c, tree-ssa-live.c, tree-ssa-live.h:
        tree-ssa-dce.c, tree-ssa-live.c, tree-ssa-live.h:
        Convert function prototypes to ISO C.
        Convert function prototypes to ISO C.
2003-06-10  Jeff Law  
2003-06-10  Jeff Law  
        * toplev.c (parse_options_and_default_flags): Fix typo in last change.
        * toplev.c (parse_options_and_default_flags): Fix typo in last change.
        * gimplify.c (simplify_expr, case BIT_FIELD_REF): Make sure
        * gimplify.c (simplify_expr, case BIT_FIELD_REF): Make sure
        to call recalculate_side_effects after gimplifying the
        to call recalculate_side_effects after gimplifying the
        operands.
        operands.
2003-06-10  Diego Novillo  
2003-06-10  Diego Novillo  
        * toplev.c (flag_tree_dom): New variable.
        * toplev.c (flag_tree_dom): New variable.
        (f_options): Add new entry for -ftree-dominator-opts.
        (f_options): Add new entry for -ftree-dominator-opts.
        (parse_options_and_default_flags): Enable flag_tree_dom for
        (parse_options_and_default_flags): Enable flag_tree_dom for
        -O1 and higher.  At -O2 and higher, disable flag_tree_dom is
        -O1 and higher.  At -O2 and higher, disable flag_tree_dom is
        SSA-PRE is also specified.
        SSA-PRE is also specified.
        * flags.h (flag_tree_dom): Declare.
        * flags.h (flag_tree_dom): Declare.
        * doc/invoke.texi: Document -ftree-dominator-opts.
        * doc/invoke.texi: Document -ftree-dominator-opts.
        * tree-ssa.c (rewrite_block): Disable tracking of available
        * tree-ssa.c (rewrite_block): Disable tracking of available
        expressions when not doing dominator optimizations.
        expressions when not doing dominator optimizations.
        Call rewrite_stmt when not doing dominator optimizations.
        Call rewrite_stmt when not doing dominator optimizations.
        Otherwise, call rewrite_and_optimize_stmt.
        Otherwise, call rewrite_and_optimize_stmt.
        (rewrite_stmt): Don't optimize the statement.  Just rename.
        (rewrite_stmt): Don't optimize the statement.  Just rename.
        (rewrite_and_optimize_stmt): Optimize the statement while rewriting
        (rewrite_and_optimize_stmt): Optimize the statement while rewriting
        its operands.
        its operands.
        (lookup_avail_expr): Update comments.
        (lookup_avail_expr): Update comments.
2003-06-10  Andrew Haley  
2003-06-10  Andrew Haley  
        * c-simplify.c (c_simplify_stmt): case ASM_STMT: Ensure qualifiers
        * c-simplify.c (c_simplify_stmt): case ASM_STMT: Ensure qualifiers
        come from input statement.
        come from input statement.
2003-06-09  Andrew MacLeod  
2003-06-09  Andrew MacLeod  
        * tree-cfg.c (handle_switch_split): Update PHI nodes when splitting.
        * tree-cfg.c (handle_switch_split): Update PHI nodes when splitting.
        (tree_split_edge): Update PHI nodes in destination block.
        (tree_split_edge): Update PHI nodes in destination block.
2003-06-09  Steven Bosscher  
2003-06-09  Steven Bosscher  
        * basic-block.h, tree-dfa.c, tree-ssa.c, tree-cfg.c,
        * basic-block.h, tree-dfa.c, tree-ssa.c, tree-cfg.c,
        tree-flow.h: Convert function prototypes to ISO C.
        tree-flow.h: Convert function prototypes to ISO C.
2003-06-09  Daniel Berlin  
2003-06-09  Daniel Berlin  
        * tree-cfg.c (bsi_commit_edge_inserts): Fix computation of
        * tree-cfg.c (bsi_commit_edge_inserts): Fix computation of
        new_blocks.
        new_blocks.
2003-06-08  Diego Novillo  
2003-06-08  Diego Novillo  
        * tree-cfg.c (handle_switch_split): Don't allocate basic block
        * tree-cfg.c (handle_switch_split): Don't allocate basic block
        annotations more than once.
        annotations more than once.
        (bsi_commit_first_edge_insert): Likewise.
        (bsi_commit_first_edge_insert): Likewise.
2003-06-07  Jeff Sturm  
2003-06-07  Jeff Sturm  
        * tree-cfg.c (could_trap_p): New function.
        * tree-cfg.c (could_trap_p): New function.
        (stmt_ends_bb_p): Handle flag_non_call_exceptions.
        (stmt_ends_bb_p): Handle flag_non_call_exceptions.
        (make_exit_edges): Handle flag_non_call_exceptions.
        (make_exit_edges): Handle flag_non_call_exceptions.
        (is_ctrl_altering_stmt): Handle flag_non_call_exceptions.
        (is_ctrl_altering_stmt): Handle flag_non_call_exceptions.
        * tree-inline.c (walk_tree): Add case for CHAR_TYPE.
        * tree-inline.c (walk_tree): Add case for CHAR_TYPE.
        * tree-ssa-dce.c (stmt_useful_p): Keep all CATCH_EXPRs.
        * tree-ssa-dce.c (stmt_useful_p): Keep all CATCH_EXPRs.
2003-06-05  Jason Merrill  
2003-06-05  Jason Merrill  
        * stmt.c (asm_op_is_mem_input): New fn.
        * stmt.c (asm_op_is_mem_input): New fn.
        * tree.h: Declare it.
        * tree.h: Declare it.
        * gimplify.c (simplify_asm_expr): Call resolve_asm_operand_names.
        * gimplify.c (simplify_asm_expr): Call resolve_asm_operand_names.
        Use is_simple_modify_expr_lhs for mem input ops.
        Use is_simple_modify_expr_lhs for mem input ops.
2003-06-05  Frank Ch. Eigler  
2003-06-05  Frank Ch. Eigler  
        * c-mudflap.c (mflang_register_call): Give the synthetic decl
        * c-mudflap.c (mflang_register_call): Give the synthetic decl
        undefined (not zero) size.
        undefined (not zero) size.
2003-06-05  Frank Ch. Eigler  
2003-06-05  Frank Ch. Eigler  
        * tree-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.
        * tree-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.
        (TREE_MUDFLAPPED_P): Remove.  Update callers to use mf_marked_p.
        (TREE_MUDFLAPPED_P): Remove.  Update callers to use mf_marked_p.
        (mf_mark, mf_marked_p): Replacement functions to replace old node
        (mf_mark, mf_marked_p): Replacement functions to replace old node
        marking based on tree flag-bits.
        marking based on tree flag-bits.
        (mf_mostly_copy_tree_r): Preserve markedness across copies.
        (mf_mostly_copy_tree_r): Preserve markedness across copies.
        * tree-mudflap.h: Add new decls
        * tree-mudflap.h: Add new decls
        * c-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.
        * c-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.
2003-06-04  Diego Novillo  
2003-06-04  Diego Novillo  
        * tree-dfa.c (add_stmt_operand): Always consider non-scalar types
        * tree-dfa.c (add_stmt_operand): Always consider non-scalar types
        virtual operands.
        virtual operands.
2003-06-04  Andrew MacLeod  
2003-06-04  Andrew MacLeod  
        * toplev.c (parse_options_and_default_flags): Turn tree_copyprop on by
        * toplev.c (parse_options_and_default_flags): Turn tree_copyprop on by
        default.
        default.
        * tree-cfg.c (linearize_control_structures, linearize_cond_expr,
        * tree-cfg.c (linearize_control_structures, linearize_cond_expr,
        replace_stmt, merge_tree_blocks, remap_stmts): Fix PROTOS.
        replace_stmt, merge_tree_blocks, remap_stmts): Fix PROTOS.
        (find_insert_location): Add additional basic block parameter. Handle
        (find_insert_location): Add additional basic block parameter. Handle
        switch stmts.
        switch stmts.
        (handle_switch_split): New. Split edges to switch labels.
        (handle_switch_split): New. Split edges to switch labels.
        (bsi_commit_first_edge_insert): Add extra parameter to
        (bsi_commit_first_edge_insert): Add extra parameter to
        find_insert_location call. Fix split block chaining in THEN & ELSE.
        find_insert_location call. Fix split block chaining in THEN & ELSE.
        * tree-ssa-live.c (calculate_live_on_entry): Process all PHI def's
        * tree-ssa-live.c (calculate_live_on_entry): Process all PHI def's
        after all the arguments have been processed.
        after all the arguments have been processed.
        * tree-ssa.c (struct ssa_stats_d, struct loops *loops, var_is_live,
        * tree-ssa.c (struct ssa_stats_d, struct loops *loops, var_is_live,
        rewrite_into_ssa): Remove old UNSSA code.
        rewrite_into_ssa): Remove old UNSSA code.
        (rewrite_block): Remove stmt is rewrite_stmt returns 1.
        (rewrite_block): Remove stmt is rewrite_stmt returns 1.
        (assign_vars): Remove abort and enable overlapping live ranges.
        (assign_vars): Remove abort and enable overlapping live ranges.
        (replace_variable): New. Replace SSA name with the partition variable.
        (replace_variable): New. Replace SSA name with the partition variable.
        (rewrite_out_of_ssa): Use replace_variable().
        (rewrite_out_of_ssa): Use replace_variable().
        (dump_tree_ssa_stats): Remove old UNSSA code.
        (dump_tree_ssa_stats): Remove old UNSSA code.
        (rewrite_stmt): Return 1 if stmt should be deleted. Remove old
        (rewrite_stmt): Return 1 if stmt should be deleted. Remove old
        UNSSA code.
        UNSSA code.
2003-06-03  Diego Novillo  
2003-06-03  Diego Novillo  
        * gimplify.c (simplify_call_expr): Move code to mark MD builtins
        * gimplify.c (simplify_call_expr): Move code to mark MD builtins
        non-simplifiable...
        non-simplifiable...
        * tree-simple.c (is_simple_call_expr): ... here.
        * tree-simple.c (is_simple_call_expr): ... here.
2003-06-03  Diego Novillo  
2003-06-03  Diego Novillo  
        * c-parse.in: Fix botched merge.
        * c-parse.in: Fix botched merge.
2003-06-03  Diego Novillo  
2003-06-03  Diego Novillo  
        * tree-mudflap.c (MARK_TREE_MUDFLAPPED, TREE_MUDFLAPPED):
        * tree-mudflap.c (MARK_TREE_MUDFLAPPED, TREE_MUDFLAPPED):
        Use TREE_VISITED instead of TREE_BOUNDED.
        Use TREE_VISITED instead of TREE_BOUNDED.
        * c-mudflap.c (TREE_MUDFLAPPED): Likewise.
        * c-mudflap.c (TREE_MUDFLAPPED): Likewise.
        * tree-pretty-print.c (dump_generic_node): Remove
        * tree-pretty-print.c (dump_generic_node): Remove
        references to TYPE_QUAL_BOUNDED.
        references to TYPE_QUAL_BOUNDED.
2003-06-03  Jason Merrill  
2003-06-03  Jason Merrill  
        * gimplify.c (simplify_cond_expr): Call truthvalue_conversion
        * gimplify.c (simplify_cond_expr): Call truthvalue_conversion
        before invert_truthvalue.
        before invert_truthvalue.
2003-06-02  Daniel Berlin  
2003-06-02  Daniel Berlin  
        * tree-dfa.c (compute_may_aliases): Call delete_alias_vars whenever we
        * tree-dfa.c (compute_may_aliases): Call delete_alias_vars whenever we
        call create_alias_vars.
        call create_alias_vars.
        * tree-alias-common (ptr_may_alias_var): Cleanup determination of
        * tree-alias-common (ptr_may_alias_var): Cleanup determination of
        global vars and whatnot.
        global vars and whatnot.
2003-06-02  Diego Novillo  
2003-06-02  Diego Novillo  
        * Makefile.in (tree-ssa.o, tree-cfg.o): Add dependency on cfgloop.h
        * Makefile.in (tree-ssa.o, tree-cfg.o): Add dependency on cfgloop.h
        (tree-optimize.o): Remove dependency on cfgloop.h.
        (tree-optimize.o): Remove dependency on cfgloop.h.
        * basic-block.h (struct basic_block_def): Fix documentation for
        * basic-block.h (struct basic_block_def): Fix documentation for
        field 'loop_father'.
        field 'loop_father'.
        * tree-dfa.c (add_referenced_var): Fix type of element
        * tree-dfa.c (add_referenced_var): Fix type of element
        pushed into aliased_objects_alias_set.
        pushed into aliased_objects_alias_set.
        * tree-optimize.c: Don't include cfgloop.h
        * tree-optimize.c: Don't include cfgloop.h
        (optimize_function_tree): Move code to initialize loop optimizer...
        (optimize_function_tree): Move code to initialize loop optimizer...
        * tree-cfg.c (build_tree_cfg): ... here.
        * tree-cfg.c (build_tree_cfg): ... here.
        * tree-ssa.c: Include cfgloop.h.
        * tree-ssa.c: Include cfgloop.h.
        (loops): New file local variable.
        (loops): New file local variable.
        (rewrite_into_ssa): Initialize/finalize loop optimizer.
        (rewrite_into_ssa): Initialize/finalize loop optimizer.
        (rewrite_stmt): Call var_is_live when processing redundant
        (rewrite_stmt): Call var_is_live when processing redundant
        assignments to the same LHS.
        assignments to the same LHS.
        (var_is_live): Add heuristic to discover overlapping definitions in
        (var_is_live): Add heuristic to discover overlapping definitions in
        loops that do not have PHI nodes for VAR at the loop header.
        loops that do not have PHI nodes for VAR at the loop header.
2003-06-02  Jason Merrill  
2003-06-02  Jason Merrill  
        * gimplify.c (simplify_expr): Only allow a cast from a 'val'.
        * gimplify.c (simplify_expr): Only allow a cast from a 'val'.
        * tree-simple.c (is_simple_cast): Likewise.
        * tree-simple.c (is_simple_cast): Likewise.
2003-06-02  Andrew MacLeod  
2003-06-02  Andrew MacLeod  
        * tree-cfg.c (bsi_insert_before): Update end of block pointer if we
        * tree-cfg.c (bsi_insert_before): Update end of block pointer if we
        inserted before the last stmt in a block. (The container changed).
        inserted before the last stmt in a block. (The container changed).
        * tree-ssa.c (elim_backward): Inserting copy should be within
        * tree-ssa.c (elim_backward): Inserting copy should be within
        conditional check.
        conditional check.
        (elim_create): Only select one bit instead of the all.
        (elim_create): Only select one bit instead of the all.
2003-06-01  Jason Merrill  
2003-06-01  Jason Merrill  
        * Makefile.in: Remove lots of -Wno-error targets.
        * Makefile.in: Remove lots of -Wno-error targets.
        * tree-simple.c (recalculate_side_effects): Check TREE_THIS_VOLATILE.
        * tree-simple.c (recalculate_side_effects): Check TREE_THIS_VOLATILE.
        * gimplify.c (simplify_compound_lval): Call
        * gimplify.c (simplify_compound_lval): Call
        recalculate_side_effects on each of the subexpressions.
        recalculate_side_effects on each of the subexpressions.
        * expr.c (expand_expr) : Use the if-statement code if
        * expr.c (expand_expr) : Use the if-statement code if
        it's void.
        it's void.
2003-06-01  Daniel Berlin  
2003-06-01  Daniel Berlin  
        * tree-alias-common.c: Remove setting of DECL_CONTEXT in temp vars,
        * tree-alias-common.c: Remove setting of DECL_CONTEXT in temp vars,
        it's done in create_tmp_alias_var for us.
        it's done in create_tmp_alias_var for us.
        (ptr_may_alias_var): Check if the variables are memory tags, and get
        (ptr_may_alias_var): Check if the variables are memory tags, and get
        the associated pointers if they are.
        the associated pointers if they are.
2003-05-30  Frank Ch. Eigler  
2003-05-30  Frank Ch. Eigler  
        * tree-mudflap.c (mudflap_c_function, enqueue_constant, enqueue_decl):
        * tree-mudflap.c (mudflap_c_function, enqueue_constant, enqueue_decl):
        Rework dumping logic.
        Rework dumping logic.
2003-05-27  Jason Merrill  
2003-05-27  Jason Merrill  
        * tree-ssa.c (avail_expr_hash): Simplify by using iterative_hash_expr
        * tree-ssa.c (avail_expr_hash): Simplify by using iterative_hash_expr
        in more places.
        in more places.
        * tree.c (iterative_hash_expr): Handle SSA_NAME.
        * tree.c (iterative_hash_expr): Handle SSA_NAME.
2003-05-29  Jeff Law  
2003-05-29  Jeff Law  
        * tree-ssa.c (rewrite_stmt): Detect and remove redundant
        * tree-ssa.c (rewrite_stmt): Detect and remove redundant
        memory loads.
        memory loads.
        (avail_expr_hash): Use iterative_hash_expr, not iterative_hash_object
        (avail_expr_hash): Use iterative_hash_expr, not iterative_hash_object
        as needed.
        as needed.
2003-05-27  Jason Merrill  
2003-05-27  Jason Merrill  
        * gimplify.c (shortcut_cond_expr): Avoid jumps to jumps.
        * gimplify.c (shortcut_cond_expr): Avoid jumps to jumps.
2003-05-26  Jason Merrill  
2003-05-26  Jason Merrill  
        * c-simplify.c (simplify_switch_stmt): A SWITCH_EXPR also gets the
        * c-simplify.c (simplify_switch_stmt): A SWITCH_EXPR also gets the
        source location of its first line.
        source location of its first line.
2003-05-24  Diego Novillo  
2003-05-24  Diego Novillo  
        Do not consider INDIRECT_REF nodes to be variables.
        Do not consider INDIRECT_REF nodes to be variables.
        * gimplify.c (create_tmp_alias_var): Allow temporaries of
        * gimplify.c (create_tmp_alias_var): Allow temporaries of
        ARRAY_TYPE to be created.
        ARRAY_TYPE to be created.
        Create new temporaries with function scope.
        Create new temporaries with function scope.
        Don't call build_type_variant.
        Don't call build_type_variant.
        Mark the temporary volatile if its type is volatile.
        Mark the temporary volatile if its type is volatile.
        * tree-dfa.c: Change every function that received a variable and
        * tree-dfa.c: Change every function that received a variable and
        its base symbol to just receive the variable.  Update all callers.
        its base symbol to just receive the variable.  Update all callers.
        (struct alias_set_d): Remove field 'tag_sym'.
        (struct alias_set_d): Remove field 'tag_sym'.
        Add documentation for fields.
        Add documentation for fields.
        (struct walk_state): Add field 'is_indirect_ref'.
        (struct walk_state): Add field 'is_indirect_ref'.
        Add documentation for fields.
        Add documentation for fields.
        (opf_ignore_bp): Remove.  Update all users.
        (opf_ignore_bp): Remove.  Update all users.
        (aliased_objects_base): Remove.  Update all users.
        (aliased_objects_base): Remove.  Update all users.
        (get_stmt_operands): If the statement had virtual operands, do not
        (get_stmt_operands): If the statement had virtual operands, do not
        scan them again.
        scan them again.
        (get_expr_operands): Handle INDIRECT_REF nodes by adding an operand
        (get_expr_operands): Handle INDIRECT_REF nodes by adding an operand
        for the memory tag represented and a use for the base pointer.
        for the memory tag represented and a use for the base pointer.
        Don't add VUSE operands for pointer arguments to functions.
        Don't add VUSE operands for pointer arguments to functions.
        Force a virtual operand when processing ADDR_EXPR nodes.
        Force a virtual operand when processing ADDR_EXPR nodes.
        (add_stmt_operand): If the variable is an alias tag, always add it
        (add_stmt_operand): If the variable is an alias tag, always add it
        as a virtual operand.
        as a virtual operand.
        Remove code to handle INDIRECT_REF nodes.
        Remove code to handle INDIRECT_REF nodes.
        Move code to determine if a pointer may point to global memory to
        Move code to determine if a pointer may point to global memory to
        find_vars_r.
        find_vars_r.
        Set has_volatile_ops flag in the statement when adding operands for
        Set has_volatile_ops flag in the statement when adding operands for
        globals and local statics.
        globals and local statics.
        If the variable is an alias tag, mark the statement as making
        If the variable is an alias tag, mark the statement as making
        aliased loads or stores.
        aliased loads or stores.
        (set_def): Mark the variable as having real references.
        (set_def): Mark the variable as having real references.
        (add_use): Likewise.
        (add_use): Likewise.
        (add_vdef): Remove code to re-add previous virtual operands.
        (add_vdef): Remove code to re-add previous virtual operands.
        If PREV_VOPS is set, don't add a new virtual operand.
        If PREV_VOPS is set, don't add a new virtual operand.
        (add_vuse): Likewise.
        (add_vuse): Likewise.
        (dump_variable): Show annotation bitfields 'mem_tag',
        (dump_variable): Show annotation bitfields 'mem_tag',
        'occurs_in_abnormal_phi', 'is_alias_tag' and 'is_stored'.
        'occurs_in_abnormal_phi', 'is_alias_tag' and 'is_stored'.
        (compute_may_aliases): Initialize walk_state.is_indirect_ref to 0.
        (compute_may_aliases): Initialize walk_state.is_indirect_ref to 0.
        (compute_alias_sets): Don't remove alias sets with exactly one
        (compute_alias_sets): Don't remove alias sets with exactly one
        entry.
        entry.
        (register_alias_set): Re-implement to support memory tags instead
        (register_alias_set): Re-implement to support memory tags instead
        of INDIRECT_REF nodes.  Document algorithm.
        of INDIRECT_REF nodes.  Document algorithm.
        (find_alias_for): Likewise.
        (find_alias_for): Likewise.
        (may_alias_p): Likewise.
        (may_alias_p): Likewise.
        (add_may_alias): Likewise.
        (add_may_alias): Likewise.
        (find_vars_r): If a pointer assignment is found and the RHS of the
        (find_vars_r): If a pointer assignment is found and the RHS of the
        assignment may access global memory, mark the pointer as pointing
        assignment may access global memory, mark the pointer as pointing
        to global memory.
        to global memory.
        Handle INDIRECT_REF nodes by marking the base pointer as
        Handle INDIRECT_REF nodes by marking the base pointer as
        dereferenced.
        dereferenced.
        Do not share INDIRECT_REF nodes.
        Do not share INDIRECT_REF nodes.
        (add_referenced_var): Don't handle INDIRECT_REF nodes.
        (add_referenced_var): Don't handle INDIRECT_REF nodes.
        If called from a store operation, mark the variable as stored.
        If called from a store operation, mark the variable as stored.
        By default mark the variable as not having real references.
        By default mark the variable as not having real references.
        When processing a pointer that has been dereferenced, create a
        When processing a pointer that has been dereferenced, create a
        memory tag for the pointer.
        memory tag for the pointer.
        (add_indirect_ref_var): Remove.  Update all callers.
        (add_indirect_ref_var): Remove.  Update all callers.
        (get_virtual_var): Don't handle INDIRECT_REF nodes.
        (get_virtual_var): Don't handle INDIRECT_REF nodes.
        (find_hidden_use_vars_r):
        (find_hidden_use_vars_r):
        * tree-flow-inline.h (get_var_ann): New function.  Change all
        * tree-flow-inline.h (get_var_ann): New function.  Change all
        functions that called var_ann and create_var_ann to call
        functions that called var_ann and create_var_ann to call
        get_var_ann.
        get_var_ann.
        (get_stmt_ann): Likewise.
        (get_stmt_ann): Likewise.
        (set_indirect_ref): Remove.  Update all callers.
        (set_indirect_ref): Remove.  Update all callers.
        (indirect_ref): Remove.  Update all callers.
        (indirect_ref): Remove.  Update all callers.
        (create_indirect_ref): Remove.  Update all callers.
        (create_indirect_ref): Remove.  Update all callers.
        * tree-flow.h (struct var_ann_d): Remove fields 'is_loaded',
        * tree-flow.h (struct var_ann_d): Remove fields 'is_loaded',
        'unused' and 'indirect_ref'.
        'unused' and 'indirect_ref'.
        Add fields 'mem_tag', 'is_mem_tag', 'is_alias_tag' and
        Add fields 'mem_tag', 'is_mem_tag', 'is_alias_tag' and
        'has_real_refs'.
        'has_real_refs'.
        (get_var_ann, get_stmt_ann): Declare.
        (get_var_ann, get_stmt_ann): Declare.
        (create_indirect_ref, set_indirect_ref, indirect_ref): Remove.
        (create_indirect_ref, set_indirect_ref, indirect_ref): Remove.
        * tree-pretty-print.c (dump_generic_node): Don't handle
        * tree-pretty-print.c (dump_generic_node): Don't handle
        INDIRECT_REF nodes inside SSA_NAME nodes.
        INDIRECT_REF nodes inside SSA_NAME nodes.
        * tree-simple.c (get_base_symbol): Don't handle INDIRECT_REF nodes.
        * tree-simple.c (get_base_symbol): Don't handle INDIRECT_REF nodes.
        (is_simple_unary_expr): Don't call STRIP_NOPS.
        (is_simple_unary_expr): Don't call STRIP_NOPS.
        * tree-ssa-copyprop.c (get_original): Don't handle INDIRECT_REF
        * tree-ssa-copyprop.c (get_original): Don't handle INDIRECT_REF
        nodes.  Allow pointers to be copy propagated.
        nodes.  Allow pointers to be copy propagated.
        * tree-ssa-dce.c (need_to_preserve_store): Don't handle
        * tree-ssa-dce.c (need_to_preserve_store): Don't handle
        INDIRECT_REF nodes.
        INDIRECT_REF nodes.
        * tree-ssa-live.c (create_ssa_var_map): Only process variables that
        * tree-ssa-live.c (create_ssa_var_map): Only process variables that
        have real references.
        have real references.
        * tree-ssa.c: Update documentation regarding INDIRECT_REF nodes.
        * tree-ssa.c: Update documentation regarding INDIRECT_REF nodes.
        (update_indirect_ref_vuses): Remove.  Update all users.
        (update_indirect_ref_vuses): Remove.  Update all users.
        (update_pointer_vuses): Remove.  Update all users.
        (update_pointer_vuses): Remove.  Update all users.
        (MAY_COPYPROP_P): Remove.  Update all users.
        (MAY_COPYPROP_P): Remove.  Update all users.
        (create_temp): Don't handle INDIRECT_REF nodes.
        (create_temp): Don't handle INDIRECT_REF nodes.
        (coalesce_ssa_name): Ignore variables that have no real references.
        (coalesce_ssa_name): Ignore variables that have no real references.
        (rewrite_stmt): Mark the statement modified if a new copy or
        (rewrite_stmt): Mark the statement modified if a new copy or
        constant was propagated into it.
        constant was propagated into it.
        Don't special-case pointers.
        Don't special-case pointers.
        (rewrite_operand): Don't handle INDIRECT_REF nodes.
        (rewrite_operand): Don't handle INDIRECT_REF nodes.
        * tree.h (SSA_VAR_P): Remove.  Update all users.
        * tree.h (SSA_VAR_P): Remove.  Update all users.
        (SSA_DECL_P): Rename to SSA_VAR_P.
        (SSA_DECL_P): Rename to SSA_VAR_P.
2003-05-22  Jeff Law  
2003-05-22  Jeff Law  
        * gimplify.c (simplify_expr): Avoid gimplifying expressions which
        * gimplify.c (simplify_expr): Avoid gimplifying expressions which
        are already in gimple form.
        are already in gimple form.
        * tree-simple.c (is_simple_constructor): No longer treat TREE_STATIC
        * tree-simple.c (is_simple_constructor): No longer treat TREE_STATIC
        constructors specially.
        constructors specially.
        (is_simple_addr_expr_arg): If we're taking the address of a label
        (is_simple_addr_expr_arg): If we're taking the address of a label
        for the first time, then the ADDR_EXPR is not in gimple form.
        for the first time, then the ADDR_EXPR is not in gimple form.
2003-05-22  Jason Merrill  
2003-05-22  Jason Merrill  
        * tree-cfg.c (compute_reachable_eh): Don't skip cleanups.
        * tree-cfg.c (compute_reachable_eh): Don't skip cleanups.
        * tree-dfa.c (add_referenced_var): Read-only INDIRECT_REFs can
        * tree-dfa.c (add_referenced_var): Read-only INDIRECT_REFs can
        also be clobbered by function calls.
        also be clobbered by function calls.
2003-05-22  Jeff Law  
2003-05-22  Jeff Law  
        * expr.c (convert_move): Avoid making silly copies.
        * expr.c (convert_move): Avoid making silly copies.
        (expand_expr, case BIND_EXPR): Correctly determine when the
        (expand_expr, case BIND_EXPR): Correctly determine when the
        result of the BIND_EXPR will not be used.
        result of the BIND_EXPR will not be used.
2003-05-21  Jason Merrill  
2003-05-21  Jason Merrill  
        * tree-cfg.c (compute_reachable_eh): Handle multiple CATCH_EXPRs.
        * tree-cfg.c (compute_reachable_eh): Handle multiple CATCH_EXPRs.
        * builtins.c (simplify_builtin_next_arg): Split out from...
        * builtins.c (simplify_builtin_next_arg): Split out from...
        (expand_builtin_next_arg): ...here.
        (expand_builtin_next_arg): ...here.
        (simplify_builtin_va_start): Split out from...
        (simplify_builtin_va_start): Split out from...
        (expand_builtin_va_start): ...here.
        (expand_builtin_va_start): ...here.
        (simplify_builtin): Call it.
        (simplify_builtin): Call it.
        * gimplify.c (simplify_call_expr): If simplify_builtin worked,
        * gimplify.c (simplify_call_expr): If simplify_builtin worked,
        just return.
        just return.
2003-05-20  Jason Merrill  
2003-05-20  Jason Merrill  
        * gimplify.c (shortcut_cond_expr, shortcut_cond_r): Rewrite.
        * gimplify.c (shortcut_cond_expr, shortcut_cond_r): Rewrite.
        (simplify_cond_expr): Also invert ifs with no 'then'.
        (simplify_cond_expr): Also invert ifs with no 'then'.
        (build_and_jump): New fn, split out from...
        (build_and_jump): New fn, split out from...
        (gimplify_exit_expr): ...here.  Don't bother gimplifying the
        (gimplify_exit_expr): ...here.  Don't bother gimplifying the
        condition.
        condition.
        * gimplify.c (simplify_save_expr): Add post-effects to the
        * gimplify.c (simplify_save_expr): Add post-effects to the
        postqueue.
        postqueue.
        * gimplify.c (mostly_copy_tree_r): Don't unshare constants.
        * gimplify.c (mostly_copy_tree_r): Don't unshare constants.
2003-05-20  Jeff Law  
2003-05-20  Jeff Law  
        * expr.c (expand_expr, case COND_EXPR): Avoid useless RTL generation
        * expr.c (expand_expr, case COND_EXPR): Avoid useless RTL generation
        when the THEN or ELSE arm is empty.
        when the THEN or ELSE arm is empty.
        * tree-cfg.c (make_loop_expr_blocks): Do not accept next_block_link
        * tree-cfg.c (make_loop_expr_blocks): Do not accept next_block_link
        as an argument, make it a local variable.  Callers changed.
        as an argument, make it a local variable.  Callers changed.
        * tree-cfg.c (remove_useless_stmts_and_empty_vars): Eliminate
        * tree-cfg.c (remove_useless_stmts_and_empty_vars): Eliminate
        GOTO_EXPRs which jump to the next statement occuring in an
        GOTO_EXPRs which jump to the next statement occuring in an
        outer control/block structure nest.
        outer control/block structure nest.
2003-05-20  Diego Novillo  
2003-05-20  Diego Novillo  
        * tree-ssa-ccp.c (set_rhs): Fix typo in handling of
        * tree-ssa-ccp.c (set_rhs): Fix typo in handling of
        RETURN_EXPR nodes.
        RETURN_EXPR nodes.
2003-05-19  Daniel Berlin  
2003-05-19  Daniel Berlin  
        * tree-alias-common.c (alias_get_name): Handle unnamed variables once
        * tree-alias-common.c (alias_get_name): Handle unnamed variables once
        and for all.
        and for all.
2003-05-19  Jeff Law 
2003-05-19  Jeff Law 
        * tree-ssa-dce.c (remove_conditional): If the conditional's block
        * tree-ssa-dce.c (remove_conditional): If the conditional's block
        has no post dominator in the CFG, then wire it to the exit node.
        has no post dominator in the CFG, then wire it to the exit node.
        Avoid unnecessary check of bb->succ.
        Avoid unnecessary check of bb->succ.
2003-05-17  Daniel Berlin  
2003-05-17  Daniel Berlin  
        * tree-pretty-print.c (MASK_POINTER): Parameter is P, not node.
        * tree-pretty-print.c (MASK_POINTER): Parameter is P, not node.
2003-05-17  Daniel Berlin  
2003-05-17  Daniel Berlin  
        * tree-alias-common.c (get_alias_var): Handle REFERENCE_EXPR.
        * tree-alias-common.c (get_alias_var): Handle REFERENCE_EXPR.
        (find_func_aliases): Ditto.
        (find_func_aliases): Ditto.
        (get_alias_var): Use POINTER_TYPE_P.
        (get_alias_var): Use POINTER_TYPE_P.
2003-05-16  Frank Ch. Eigler  
2003-05-16  Frank Ch. Eigler  
        * gcc.c (cc1_options): Correct "-fmudflapth" handling.
        * gcc.c (cc1_options): Correct "-fmudflapth" handling.
        * tree-mudflap.c (mudflap_c_function, mf_build_check_statement_for):
        * tree-mudflap.c (mudflap_c_function, mf_build_check_statement_for):
        Use locally cached mask/shift values only in single-threaded mode.
        Use locally cached mask/shift values only in single-threaded mode.
2003-05-16  Daniel Berlin  
2003-05-16  Daniel Berlin  
        * tree-alias-common.c (ptr_may_alias_var): Fix DECL_CONTEXT
        * tree-alias-common.c (ptr_may_alias_var): Fix DECL_CONTEXT
        checking.
        checking.
2003-05-16  Andrew MacLeod  
2003-05-16  Andrew MacLeod  
        * tree-flow.h (ssa_make_edge): Remove prototype.
        * tree-flow.h (ssa_make_edge): Remove prototype.
        * tree-ssa-dce.c (remove_dead_stmt): Change comment about removing
        * tree-ssa-dce.c (remove_dead_stmt): Change comment about removing
        conditionals.
        conditionals.
        (remove_conditional): Don't update PHI nodes or call ssa_make_edge.
        (remove_conditional): Don't update PHI nodes or call ssa_make_edge.
        * tree-ssa.c (ssa_make_edge): Remove.
        * tree-ssa.c (ssa_make_edge): Remove.
2003-05-16  Jeff Law  
2003-05-16  Jeff Law  
        * tree-cfg.c (remove_useless_stmts_and_vars): Handle case where
        * tree-cfg.c (remove_useless_stmts_and_vars): Handle case where
        both arms of an if-then-else simply jump to the same location.
        both arms of an if-then-else simply jump to the same location.
        * tree-ssa-ccp.c (get_rhs): Correctly handle MODIFY_EXPR embedded in
        * tree-ssa-ccp.c (get_rhs): Correctly handle MODIFY_EXPR embedded in
        a RETURN_EXPR.
        a RETURN_EXPR.
        (set_rhs): Likewise.
        (set_rhs): Likewise.
2003-05-15  John David Anglin  
2003-05-15  John David Anglin  
        * Makefile.in (regmove.o-warn): Change to -Wno-error.
        * Makefile.in (regmove.o-warn): Change to -Wno-error.
2003-05-15  Andrew MacLeod  
2003-05-15  Andrew MacLeod  
        * tree-cfg.c (enum find_location_action): Enum for find_insert_location.
        * tree-cfg.c (enum find_location_action): Enum for find_insert_location.
        (bsi_insert_before): Handle insert at start of a BB and update pointers
        (bsi_insert_before): Handle insert at start of a BB and update pointers
        from parents if appropriate.
        from parents if appropriate.
        (find_insert_location): Handle COND_EXPR properly. Return
        (find_insert_location): Handle COND_EXPR properly. Return
        an enum type indicating what action to take on the returned value.
        an enum type indicating what action to take on the returned value.
        (bsi_commit_first_edge_insert): Use new returned action.
        (bsi_commit_first_edge_insert): Use new returned action.
2003-05-15  Jeff Law  
2003-05-15  Jeff Law  
        * tree-cfg.c (make_edges): Factor out loop invariants from
        * tree-cfg.c (make_edges): Factor out loop invariants from
        code to insert edges from the TRY to the FINALLY block.
        code to insert edges from the TRY to the FINALLY block.
        Avoid creating unnecessary edges from the end of the
        Avoid creating unnecessary edges from the end of the
        FINALLY block back to the start of the FINALLY block.
        FINALLY block back to the start of the FINALLY block.
2003-05-15  Diego Novillo  
2003-05-15  Diego Novillo  
        * tree-ssa.c (rewrite_out_of_ssa): Undo previous patch.
        * tree-ssa.c (rewrite_out_of_ssa): Undo previous patch.
2003-05-15  Diego Novillo  
2003-05-15  Diego Novillo  
        * tree-ssa.c (rewrite_out_of_ssa): Don't dump the optimized
        * tree-ssa.c (rewrite_out_of_ssa): Don't dump the optimized
        function after the SSA->normal pass.
        function after the SSA->normal pass.
2003-05-14  Toon Moene  
2003-05-14  Toon Moene  
        * Makefile.in: Add additional -Wno-error targets for Alpha.
        * Makefile.in: Add additional -Wno-error targets for Alpha.
2003-05-13  Jason Merrill  
2003-05-13  Jason Merrill  
        * gdbinit.in (pgs, pge): New macros.
        * gdbinit.in (pgs, pge): New macros.
        Implement expression temporary optimization.
        Implement expression temporary optimization.
        * gimplify.c (gimplify_ctx): Add temp_htab field.
        * gimplify.c (gimplify_ctx): Add temp_htab field.
        (push_gimplify_context): Initialize it.
        (push_gimplify_context): Initialize it.
        (pop_gimplify_context): Destroy it.
        (pop_gimplify_context): Destroy it.
        (simplify_expr): If there's no internal postqueue, generate an
        (simplify_expr): If there's no internal postqueue, generate an
        expression temporary.
        expression temporary.
        (gimple_tree_hash, gimple_tree_eq): New fns.
        (gimple_tree_hash, gimple_tree_eq): New fns.
        (create_tmp_from_val, lookup_tmp_var): New fns.
        (create_tmp_from_val, lookup_tmp_var): New fns.
        (get_formal_tmp_var): New fn.
        (get_formal_tmp_var): New fn.
        (internal_get_tmp_var): New fn.
        (internal_get_tmp_var): New fn.
        (get_initialized_tmp_var): Use it.
        (get_initialized_tmp_var): Use it.
        * tree-simple.h: Declare it.
        * tree-simple.h: Declare it.
        * gimplify.c (simplify_cond_expr): Reorganize.
        * gimplify.c (simplify_cond_expr): Reorganize.
        (shortcut_cond_expr, shortcut_cond_r): New fns.
        (shortcut_cond_expr, shortcut_cond_r): New fns.
        (build_and_jump): New fn.
        (build_and_jump): New fn.
        (gimplify_exit_expr): Use it.
        (gimplify_exit_expr): Use it.
        * gimplify.c (simplify_expr): Do better at stripping unnecessary
        * gimplify.c (simplify_expr): Do better at stripping unnecessary
        NOPs.  Tidy GOTO_EXPR handling.  Don't allow NON_LVALUE_EXPR.
        NOPs.  Tidy GOTO_EXPR handling.  Don't allow NON_LVALUE_EXPR.
        * tree-simple.c (is_simple_modify_expr): Don't allow NON_LVALUE_EXPR.
        * tree-simple.c (is_simple_modify_expr): Don't allow NON_LVALUE_EXPR.
        (is_simple_binary_expr, is_simple_condexpr): Likewise.
        (is_simple_binary_expr, is_simple_condexpr): Likewise.
        (is_simple_unary_expr, is_simple_compound_lval): Likewise.
        (is_simple_unary_expr, is_simple_compound_lval): Likewise.
        (is_simple_id): Likewise.
        (is_simple_id): Likewise.
        * tree-ssa.c (rewrite_stmt): Discard redundant assignments.
        * tree-ssa.c (rewrite_stmt): Discard redundant assignments.
        (avail_expr_eq): Don't test ops1 == ops2.
        (avail_expr_eq): Don't test ops1 == ops2.
        (avail_expr_hash): Use iterative_hash_object.
        (avail_expr_hash): Use iterative_hash_object.
2003-05-13  Jeff Law  
2003-05-13  Jeff Law  
        * tree-cfg.c (cleanup_tree_cfg): Update comments.   Set repeat
        * tree-cfg.c (cleanup_tree_cfg): Update comments.   Set repeat
        anytime we remove a control structure.
        anytime we remove a control structure.
        * tree-flow.h (struct var_ann_d): New field occurs_in_abnormal_phi.
        * tree-flow.h (struct var_ann_d): New field occurs_in_abnormal_phi.
        * tree-ssa.c (MAY_COPYPROP_P): Do not allow copy propagations
        * tree-ssa.c (MAY_COPYPROP_P): Do not allow copy propagations
        if either argument occurs in an abnormal phi.
        if either argument occurs in an abnormal phi.
        * tree-dfa.c (add_phi_arg): Set occurs_in_abrnomal_phi as needed.
        * tree-dfa.c (add_phi_arg): Set occurs_in_abrnomal_phi as needed.
        * tree-ssa-copyprop.c (copyprop_stmt): Do not allow copy
        * tree-ssa-copyprop.c (copyprop_stmt): Do not allow copy
        propagations if either argument occurs in an abnormal phi.
        propagations if either argument occurs in an abnormal phi.
        (copyprop_phi): Likewise.
        (copyprop_phi): Likewise.
2003-05-12  Diego Novillo  
2003-05-12  Diego Novillo  
        * c-common.h (STATEMENT_CODE_P): Use size_t cast instead
        * c-common.h (STATEMENT_CODE_P): Use size_t cast instead
        of int.
        of int.
        (INIT_STATEMENT_CODES): Change type of local variable i to
        (INIT_STATEMENT_CODES): Change type of local variable i to
        size_t.
        size_t.
2003-05-12  Diego Novillo  
2003-05-12  Diego Novillo  
        * c-pretty-print.c (dump_c_node): Call CONSTRUCTOR_ELTS
        * c-pretty-print.c (dump_c_node): Call CONSTRUCTOR_ELTS
        to access the operand of a CONSTRUCTOR node.
        to access the operand of a CONSTRUCTOR node.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
2003-05-11  Diego Novillo  
2003-05-11  Diego Novillo  
        * c-simplify.c (simplify_if_stmt): Replace calls to
        * c-simplify.c (simplify_if_stmt): Replace calls to
        warning_with_file_and_line with warning.
        warning_with_file_and_line with warning.
2003-05-12  Frank Ch. Eigler  
2003-05-12  Frank Ch. Eigler  
        * toplev.c (lang_independent_options): Add "-fmudflapth".
        * toplev.c (lang_independent_options): Add "-fmudflapth".
        * flags.h (flag_mudflap): Document meaning of >1 value.
        * flags.h (flag_mudflap): Document meaning of >1 value.
        * gcc.c (MFWRAP_SPEC, MFLIB_SPEC): Add -fmudflapth support.
        * gcc.c (MFWRAP_SPEC, MFLIB_SPEC): Add -fmudflapth support.
        (cpp_unique_options, cc1_options): Ditto.
        (cpp_unique_options, cc1_options): Ditto.
2003-05-10  Sebastian Pop  
2003-05-10  Sebastian Pop  
        * gimplify.c (simplify_expr): Replace CONST_DECL with its DECL_INITIAL.
        * gimplify.c (simplify_expr): Replace CONST_DECL with its DECL_INITIAL.
2003-05-09  Sebastian Pop  
2003-05-09  Sebastian Pop  
        * tree-optimize.c (optimize_function_tree): Clarify the use of the
        * tree-optimize.c (optimize_function_tree): Clarify the use of the
        loop analyzer.
        loop analyzer.
2003-05-09  Jeff Law  
2003-05-09  Jeff Law  
        * c-simplify.c (simplify_cleanup): Remove code which optimizes
        * c-simplify.c (simplify_cleanup): Remove code which optimizes
        TRY_FINALLY and TRY_CATCH.  It doesn't trigger.
        TRY_FINALLY and TRY_CATCH.  It doesn't trigger.
        * tree-cfg.c (remove_useless_stmts_and_vars): Optimize away
        * tree-cfg.c (remove_useless_stmts_and_vars): Optimize away
        TRY_CATCH and TRY_FINALLY blocks when possible.
        TRY_CATCH and TRY_FINALLY blocks when possible.
2003-05-09  Diego Novillo  
2003-05-09  Diego Novillo  
        * tree-pretty-print.c (dump_generic_node): CONSTRUCTOR
        * tree-pretty-print.c (dump_generic_node): CONSTRUCTOR
        nodes have only one operand now.
        nodes have only one operand now.
2003-05-08  Andrew MacLeod  
2003-05-08  Andrew MacLeod  
        * tree-cfg.c (pdom_info): New file level static.
        * tree-cfg.c (pdom_info): New file level static.
        (cleanup_tree_cfg): Free dominance info, if it was used.
        (cleanup_tree_cfg): Free dominance info, if it was used.
        (bsi_replace): New. Replace a stmt with a new one.
        (bsi_replace): New. Replace a stmt with a new one.
        (linearize_cond_expr): Use post dominator info to determine is a
        (linearize_cond_expr): Use post dominator info to determine is a
        conditional can be safely removed.
        conditional can be safely removed.
        (find_insert_location): New. Determine where to insert a new stmt that
        (find_insert_location): New. Determine where to insert a new stmt that
        is placed on a split edge.
        is placed on a split edge.
        (bsi_commit_first_edge_insert): Use find_insert_location to determine
        (bsi_commit_first_edge_insert): Use find_insert_location to determine
        where to link a stmt when splitting an edge.
        where to link a stmt when splitting an edge.
        (merge_tree_blocks): When deleting a basic block, remove it from the
        (merge_tree_blocks): When deleting a basic block, remove it from the
        dominance structure if it exists.
        dominance structure if it exists.
        * tree-dfa.c (add_stmt_operand): Don't rename local statics. Treat
        * tree-dfa.c (add_stmt_operand): Don't rename local statics. Treat
        them just like globals.
        them just like globals.
        * tree-flow.h (struct var_ann_d): Add root_var_processed bit and
        * tree-flow.h (struct var_ann_d): Add root_var_processed bit and
        root_index fields.
        root_index fields.
        * tree-ssa-dce.c (process_worklist): Mark conditions feeding PHI's as
        * tree-ssa-dce.c (process_worklist): Mark conditions feeding PHI's as
        necessary as well.
        necessary as well.
        (remove_dead_phis): Add missing debug information.
        (remove_dead_phis): Add missing debug information.
        * tree-ssa-live.c (var_union): Handle combining partitions when one
        * tree-ssa-live.c (var_union): Handle combining partitions when one
        has a root_variable as a representative.
        has a root_variable as a representative.
        (compact_var_map): Add comments and use flags.
        (compact_var_map): Add comments and use flags.
        (init_root_var): Use new root_var fields in struct var_ann_d.
        (init_root_var): Use new root_var fields in struct var_ann_d.
        (dump_root_var): Send output to specified file, not stderr.
        (dump_root_var): Send output to specified file, not stderr.
        (dump_var_map): Remove dump_flag parameter & some grotesque debug info.
        (dump_var_map): Remove dump_flag parameter & some grotesque debug info.
        * tree-ssa-live.h (VAR_ANN_ROOT_INDEX): Define.
        * tree-ssa-live.h (VAR_ANN_ROOT_INDEX): Define.
        (VARMAP_NORMAL, VARMAP_NO_SINGLE_DEFS): Define flags for compact_var_map.
        (VARMAP_NORMAL, VARMAP_NO_SINGLE_DEFS): Define flags for compact_var_map.
        (var_to_partition_to_var): Return NULL if not in a partition.
        (var_to_partition_to_var): Return NULL if not in a partition.
        (find_root_var): Use VAR_ANN_ROOT_INDEX.
        (find_root_var): Use VAR_ANN_ROOT_INDEX.
        * tree-ssa.c (insert_copy_on_edge): Add listing info.
        * tree-ssa.c (insert_copy_on_edge): Add listing info.
        (coalesce_ssa_name): Coalesce live-on-entry variables to their root.
        (coalesce_ssa_name): Coalesce live-on-entry variables to their root.
        Coalesce partitions across abnormal edges.
        Coalesce partitions across abnormal edges.
        (assign_vars): Remove redundant initialization code. Handle root_vars
        (assign_vars): Remove redundant initialization code. Handle root_vars
        which have already been coalesced to a partition.
        which have already been coalesced to a partition.
        (rewrite_out_of_ssa): Add debug info & remove PHI nodes when processed.
        (rewrite_out_of_ssa): Add debug info & remove PHI nodes when processed.
        (rewrite_stmt): Don't redefine redundant expressions.
        (rewrite_stmt): Don't redefine redundant expressions.
2003-05-08  Jeff Law  
2003-05-08  Jeff Law  
        * c-simplify.c (simplify_expr_stmt): Make sure to
        * c-simplify.c (simplify_expr_stmt): Make sure to
        simplify the body of the EXPR_STMT.
        simplify the body of the EXPR_STMT.
        * tree-dfa.c (remove_decl): Accept new argument for the block
        * tree-dfa.c (remove_decl): Accept new argument for the block
        to start the search.
        to start the search.
        * tree-flow.h (remove_decl): Update prototype.
        * tree-flow.h (remove_decl): Update prototype.
        * tree-cfg.c (remove_stmt): Pass the toplevel block to
        * tree-cfg.c (remove_stmt): Pass the toplevel block to
        remove_decl.
        remove_decl.
        * tree-dfa.c (find_hidden_use_vars): No longer returns a value.
        * tree-dfa.c (find_hidden_use_vars): No longer returns a value.
        Callers and prototype updated.  No longer need to look for
        Callers and prototype updated.  No longer need to look for
        nested functions, instead just mark any variables and
        nested functions, instead just mark any variables and
        parameters with DECL_NONLOCAL set as having hidden uses.
        parameters with DECL_NONLOCAL set as having hidden uses.
2003-05-08  Diego Novillo  
2003-05-08  Diego Novillo  
        * version.c (version_string): Change format to show daily
        * version.c (version_string): Change format to show daily
        datestamp and merged date.
        datestamp and merged date.
2003-05-07  Jeff Law  
2003-05-07  Jeff Law  
        * tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
        * tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
        the toplevel BIND_EXPR for an inlined function.
        the toplevel BIND_EXPR for an inlined function.
        * tree-dfa.c (find_hidden_use_vars): Look at the size of
        * tree-dfa.c (find_hidden_use_vars): Look at the size of
        VAR_DECLs, not the size of ARRAY_TYPES.  Also make sure
        VAR_DECLs, not the size of ARRAY_TYPES.  Also make sure
        to reset *inside_vla to its original value when done
        to reset *inside_vla to its original value when done
        processing any particular VAR_DECL.
        processing any particular VAR_DECL.
2003-05-06  Diego Novillo  
2003-05-06  Diego Novillo  
        * c-simplify.c (simplify_if_stmt): Warn if
        * c-simplify.c (simplify_if_stmt): Warn if
        -Wunreachable-code is given and the conditional is always
        -Wunreachable-code is given and the conditional is always
        true or always false.
        true or always false.
        * expr.c (expand_expr): Don't try to expand FUNCTION_DECL
        * expr.c (expand_expr): Don't try to expand FUNCTION_DECL
        nodes when processing BIND_EXPR_VARS.
        nodes when processing BIND_EXPR_VARS.
        * varasm.c (output_constant_def_contents): Re-use the
        * varasm.c (output_constant_def_contents): Re-use the
        label when emitting a label for mudflap.
        label when emitting a label for mudflap.
        Disable the following patch:
        Disable the following patch:
        2003-04-30  Steven Bosscher  
        2003-04-30  Steven Bosscher  
                * ggc-page.c (TREE_EXP_SIZE): Define.
                * ggc-page.c (TREE_EXP_SIZE): Define.
                (extra_order_size_table): New entry for expr trees with
                (extra_order_size_table): New entry for expr trees with
                two operands.
                two operands.
2003-05-06  Jeff Law  
2003-05-06  Jeff Law  
        * tree-cfg.c (make_exit_edges): Fix handling of blocks which
        * tree-cfg.c (make_exit_edges): Fix handling of blocks which
        end with calls.
        end with calls.
        * tree-cfg.c (remove_useless_stmts_and_vars): Remove GOTO_EXPRs
        * tree-cfg.c (remove_useless_stmts_and_vars): Remove GOTO_EXPRs
        to the immediately following tree node.
        to the immediately following tree node.
        * tree-cfg.c (make_goto_expr_edges): Fix typo in comment.
        * tree-cfg.c (make_goto_expr_edges): Fix typo in comment.
        (remove_useless_stmts_and_vars): New function.
        (remove_useless_stmts_and_vars): New function.
        * tree-flow.h (remove_useless_stmts_and_vars): Prototype.
        * tree-flow.h (remove_useless_stmts_and_vars): Prototype.
        * tree-ssa.c (rewrite_out_of_ssa): After returning to normal
        * tree-ssa.c (rewrite_out_of_ssa): After returning to normal
        form, call remove_useless_stmts_and_vars.
        form, call remove_useless_stmts_and_vars.
2003-05-02  Daniel Berlin  
2003-05-02  Daniel Berlin  
        * tree-alias-common.c (alias_get_name): Given unnamed result decls
        * tree-alias-common.c (alias_get_name): Given unnamed result decls
        a name.
        a name.
        (create_fun_alias_var): Use DECL_RESULT if available.
        (create_fun_alias_var): Use DECL_RESULT if available.
2003-05-02  Jeff Law  
2003-05-02  Jeff Law  
        * tree-inline.c (expand_call_inline): Avoid creating naked
        * tree-inline.c (expand_call_inline): Avoid creating naked
        _DECL nodes for inlined functions which had NRV optimizations
        _DECL nodes for inlined functions which had NRV optimizations
        applied.
        applied.
2003-05-02  Diego Novillo  
2003-05-02  Diego Novillo  
        * tree-cfg.c (build_tree_cfg): Update comment.
        * tree-cfg.c (build_tree_cfg): Update comment.
        (make_blocks): Don't skip over empty statements.
        (make_blocks): Don't skip over empty statements.
        Move exception handling code ...
        Move exception handling code ...
        (compute_reachable_eh): ... here.
        (compute_reachable_eh): ... here.
        (set_parent_stmt): Don't skip over empty statements.
        (set_parent_stmt): Don't skip over empty statements.
        (bsi_remove): Don't return early on empty statements.
        (bsi_remove): Don't return early on empty statements.
        Don't call STRIP_NOPS.
        Don't call STRIP_NOPS.
        (remove_stmt): Don't call STRIP_NOPS.
        (remove_stmt): Don't call STRIP_NOPS.
        Always compute the block holding the statement.
        Always compute the block holding the statement.
        After replacing the statement with an empty statement, add the
        After replacing the statement with an empty statement, add the
        empty statement to the block.
        empty statement to the block.
        (successor_block): Don't call STRIP_NOPS.
        (successor_block): Don't call STRIP_NOPS.
        (first_exec_stmt): Likewise.
        (first_exec_stmt): Likewise.
        (first_exec_block): Don't return early for empty statements.
        (first_exec_block): Don't return early for empty statements.
        (first_stmt): Don't test for NULL blocks.
        (first_stmt): Don't test for NULL blocks.
        Reformat to improve legibility.
        Reformat to improve legibility.
        (bsi_next_in_bb): Don't call STRIP_NOPS.
        (bsi_next_in_bb): Don't call STRIP_NOPS.
        Reformat to improve legibility.
        Reformat to improve legibility.
        (set_bb_for_stmt): Don't ignore empty statements.
        (set_bb_for_stmt): Don't ignore empty statements.
        * tree-dfa.c (get_stmt_operands): Don't call STRIP_NOPS.
        * tree-dfa.c (get_stmt_operands): Don't call STRIP_NOPS.
        (create_stmt_ann): Don't abort on emtpy statements.
        (create_stmt_ann): Don't abort on emtpy statements.
        Don't call STRIP_NOPS.
        Don't call STRIP_NOPS.
        (copy_stmt): Remove unused function.
        (copy_stmt): Remove unused function.
        * tree-flow.h (copy_stmt): Remove prototype.
        * tree-flow.h (copy_stmt): Remove prototype.
        * tree-flow-inline.h: Don't call STRIP_NOPS.
        * tree-flow-inline.h: Don't call STRIP_NOPS.
        Remove local variable 't'.
        Remove local variable 't'.
        (bsi_stmt): Don't return NULL_TREE for empty statements.
        (bsi_stmt): Don't return NULL_TREE for empty statements.
        Ignore error_mark_node.
        Ignore error_mark_node.
        * tree-iterator.h (tsi_next): Don't call STRIP_NOPS.
        * tree-iterator.h (tsi_next): Don't call STRIP_NOPS.
        (tsi_stmt_ptr): Likewise.
        (tsi_stmt_ptr): Likewise.
        (tsi_stmt): Likewise.
        (tsi_stmt): Likewise.
        Don't return NULL_TREE for empty statements.
        Don't return NULL_TREE for empty statements.
        * tree-pretty-print.c (dump_generic_node): Don't ignore empty
        * tree-pretty-print.c (dump_generic_node): Don't ignore empty
        statements.
        statements.
        * tree-ssa-ccp.c (fold_stmt): Don't call STRIP_NOPS.
        * tree-ssa-ccp.c (fold_stmt): Don't call STRIP_NOPS.
        * tree-ssa-dce.c (find_useful_stmts): Likewise.
        * tree-ssa-dce.c (find_useful_stmts): Likewise.
        (remove_dead_stmt): Likewise.
        (remove_dead_stmt): Likewise.
        * tree-ssa.c (mark_def_sites): Likewise.
        * tree-ssa.c (mark_def_sites): Likewise.
        (rewrite_out_of_ssa): Likewise.
        (rewrite_out_of_ssa): Likewise.
        (rewrite_stmt): Likewise.
        (rewrite_stmt): Likewise.
        * tree.c (make_ssa_name): Don't ignore empty statements.
        * tree.c (make_ssa_name): Don't ignore empty statements.
        (body_is_empty): Fix comment.
        (body_is_empty): Fix comment.
2003-05-01  Jeff Law  
2003-05-01  Jeff Law  
        * tree-dfa.c (find_hidden_use_vars): Renamed from find_vla_decls.
        * tree-dfa.c (find_hidden_use_vars): Renamed from find_vla_decls.
        Now returns a value indicating if nested function was found.
        Now returns a value indicating if nested function was found.
        When nested functions are found, mark suitable variables as
        When nested functions are found, mark suitable variables as
        having hidden uses.
        having hidden uses.
        (find_hidden_use_vars_r): Renamed from find_vla_decls_r.
        (find_hidden_use_vars_r): Renamed from find_vla_decls_r.
        (compute_may_alias): Corresponding changes.  Handle
        (compute_may_alias): Corresponding changes.  Handle
        multiple BLOCKs at the toplevel of a function.
        multiple BLOCKs at the toplevel of a function.
2003-04-30  Diego Novillo  
2003-04-30  Diego Novillo  
        * tree.c (build_empty_stmt): New function.
        * tree.c (build_empty_stmt): New function.
        * tree.h (IS_EMPTY_STMT): Define.
        * tree.h (IS_EMPTY_STMT): Define.
        (TI_EMPTY_STMT): Remove.
        (TI_EMPTY_STMT): Remove.
        (empty_stmt_node): Remove.
        (empty_stmt_node): Remove.
        Replace 'X = empty_stmt_node' with 'X = build_empty_stmt ()',
        Replace 'X = empty_stmt_node' with 'X = build_empty_stmt ()',
        and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everywhere.
        and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everywhere.
        (build_empty_stmt): Declare.
        (build_empty_stmt): Declare.
        * cp/cp-simplify.c (cp_simplify_stmt): Use IS_EMPTY_STMT.
        * cp/cp-simplify.c (cp_simplify_stmt): Use IS_EMPTY_STMT.
        * java/java-tree.h (build_java_empty_stmt): Declare.
        * java/java-tree.h (build_java_empty_stmt): Declare.
        * java/expr.c (build_java_empty_stmt): New function.
        * java/expr.c (build_java_empty_stmt): New function.
        * java/decl.c (java_init_decl_processing): Don't build empty_stmt_node.
        * java/decl.c (java_init_decl_processing): Don't build empty_stmt_node.
        Replace 'X = empty_stmt_node' with 'X = build_java_empty_stmt ()',
        Replace 'X = empty_stmt_node' with 'X = build_java_empty_stmt ()',
        and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everwhere.
        and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everwhere.
2003-04-30  Jeff Law  
2003-04-30  Jeff Law  
        * tree-dfa.c (get_expr_operands): Do not ignore operands of an
        * tree-dfa.c (get_expr_operands): Do not ignore operands of an
        an ADDR_EXPR if it is a PARM_DECL or VAR_DECL.
        an ADDR_EXPR if it is a PARM_DECL or VAR_DECL.
        * tree-dfa.c (get_expr_operands): Look inside operands in
        * tree-dfa.c (get_expr_operands): Look inside operands in
        a TREE_LIST.
        a TREE_LIST.
2003-04-29  Diego Novillo  
2003-04-29  Diego Novillo  
        * builtins.def (BUILTIN_CONSTANT_P): Mark as constant.
        * builtins.def (BUILTIN_CONSTANT_P): Mark as constant.
        * tree-dfa.c (get_expr_operands): Do not add VDEF operands for
        * tree-dfa.c (get_expr_operands): Do not add VDEF operands for
        dereferenced pointers at call sites.
        dereferenced pointers at call sites.
        * tree-ssa.c (assign_vars): Abort if we couldn't coalesce all the
        * tree-ssa.c (assign_vars): Abort if we couldn't coalesce all the
        versions together.
        versions together.
2003-04-29  Andrew MacLeod  
2003-04-29  Andrew MacLeod  
        * tree-cfg.c (bsi_start): If there are no stmts in a block, use the
        * tree-cfg.c (bsi_start): If there are no stmts in a block, use the
        context pointer to represent the basic block.
        context pointer to represent the basic block.
        (bsi_insert_after): Handle inserting into empty blocks better.
        (bsi_insert_after): Handle inserting into empty blocks better.
        (bsi_insert_before): Call bsi_insert_after to handle empty blocks.
        (bsi_insert_before): Call bsi_insert_after to handle empty blocks.
        * tree-ssa.c (elim_create): Clear bitmap after its been processed
        * tree-ssa.c (elim_create): Clear bitmap after its been processed
        instead of during loop.
        instead of during loop.
2003-04-27  Diego Novillo  
2003-04-27  Diego Novillo  
        * Makefile.in (tree-mudflap.o): Add dependency on $(TREE_DUMP_H).
        * Makefile.in (tree-mudflap.o): Add dependency on $(TREE_DUMP_H).
        * c-decl.c (c_expand_body_1): Don't call simplify_function_tree
        * c-decl.c (c_expand_body_1): Don't call simplify_function_tree
        after mudflap_c_function.
        after mudflap_c_function.
        Move mudflap instrumentation after SSA optimizers.
        Move mudflap instrumentation after SSA optimizers.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-mudflap.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-mudflap.
        * tree.h (enum tree_dump_index): Add TDI_mudflap.
        * tree.h (enum tree_dump_index): Add TDI_mudflap.
        * doc/invoke.texi: Document -fdump-tree-mudflap.
        * doc/invoke.texi: Document -fdump-tree-mudflap.
        * tree-mudflap.c: Include tree-dump.h.
        * tree-mudflap.c: Include tree-dump.h.
        (dump_file): New local variable.
        (dump_file): New local variable.
        (dump_flags): New local variable.
        (dump_flags): New local variable.
        (mudflap_c_function): Call dump_begin, dump_end and dump_function.
        (mudflap_c_function): Call dump_begin, dump_end and dump_function.
        (mf_decl_cache_locals): Set DECL_CONTEXT for __mf_lookup_shift_l
        (mf_decl_cache_locals): Set DECL_CONTEXT for __mf_lookup_shift_l
        and __mf_lookup_mask_l to current_function_decl.
        and __mf_lookup_mask_l to current_function_decl.
        (mf_offset_expr_of_array_ref): Likewise for __mf_index_X.
        (mf_offset_expr_of_array_ref): Likewise for __mf_index_X.
        (mf_build_check_statement_for): Re-implement to emit a proper
        (mf_build_check_statement_for): Re-implement to emit a proper
        STMT_EXPR.
        STMT_EXPR.
        (mx_xfn_indirect_ref): Emit detailed debugging info if
        (mx_xfn_indirect_ref): Emit detailed debugging info if
        -fdump-tree-mudflap-details is given.
        -fdump-tree-mudflap-details is given.
        (mudflap_enqueue_decl): Likewise
        (mudflap_enqueue_decl): Likewise
        * tree-optimize.c (optimize_function_tree): Don't check for
        * tree-optimize.c (optimize_function_tree): Don't check for
        -fmudflap.
        -fmudflap.
2003-04-26  Diego Novillo  
2003-04-26  Diego Novillo  
        * c-simplify.c (build_bc_goto): If the target label couldn't be
        * c-simplify.c (build_bc_goto): If the target label couldn't be
        found, emit an error message.
        found, emit an error message.
2003-04-25  Andrew MacLeod  
2003-04-25  Andrew MacLeod  
        * tree-ssa-live.c (compact_var_map): Add parameter to exclude variables
        * tree-ssa-live.c (compact_var_map): Add parameter to exclude variables
        with a single SSA version.
        with a single SSA version.
        (init_root_var): Allow that a var_map might not be compacted yet.
        (init_root_var): Allow that a var_map might not be compacted yet.
        * tree-ssa-live.h (compact_var_map): Change Prototype.
        * tree-ssa-live.h (compact_var_map): Change Prototype.
        * tree-ssa.c (rewrite_out_of_ssa): When coalescing, don't include single
        * tree-ssa.c (rewrite_out_of_ssa): When coalescing, don't include single
        reference variables during the compaction.
        reference variables during the compaction.
2003-04-25  Jeff Law  
2003-04-25  Jeff Law  
        * tree-optimize.c (optimize_function_tree): Simplify slightly.
        * tree-optimize.c (optimize_function_tree): Simplify slightly.
2003-04-25  Andrew MacLeod  
2003-04-25  Andrew MacLeod  
        * tree-ssa.c (struct _elim_graph): Change type of fields
        * tree-ssa.c (struct _elim_graph): Change type of fields
        'pred' and 'succ' to be bitmaps instead of sbitmaps.
        'pred' and 'succ' to be bitmaps instead of sbitmaps.
        Update all uses.
        Update all uses.
2003-04-25  Diego Novillo  
2003-04-25  Diego Novillo  
        * tree-cfg.c (linearize_cond_expr): Reformat.
        * tree-cfg.c (linearize_cond_expr): Reformat.
        * tree-dfa.c (get_expr_operands): Check for read-only
        * tree-dfa.c (get_expr_operands): Check for read-only
        status the dereferenced argument pointer, not the pointer
        status the dereferenced argument pointer, not the pointer
        itself.
        itself.
        (add_stmt_operand): Always consider global variables as
        (add_stmt_operand): Always consider global variables as
        virtual operands.
        virtual operands.
2003-04-24  Jason Merrill  
2003-04-24  Jason Merrill  
        * gimplify.c (simplify_cond_expr): Avoid redundant gimplification.
        * gimplify.c (simplify_cond_expr): Avoid redundant gimplification.
        Add TREE_VEC of case labels to the SWITCH_EXPR during gimplification.
        Add TREE_VEC of case labels to the SWITCH_EXPR during gimplification.
        * tree.def (CASE_LABEL_EXPR): Add an operand for the LABEL_DECL.
        * tree.def (CASE_LABEL_EXPR): Add an operand for the LABEL_DECL.
        * tree.h (SWITCH_LABELS, CASE_LABEL): New macros.
        * tree.h (SWITCH_LABELS, CASE_LABEL): New macros.
        * c-simplify.c (c_simplify_stmt) : Create LABEL_DECL here.
        * c-simplify.c (c_simplify_stmt) : Create LABEL_DECL here.
        * expr.c (expand_expr) : Not here.
        * expr.c (expand_expr) : Not here.
        * gimplify.c (gimplify_ctx): Add case_labels field.
        * gimplify.c (gimplify_ctx): Add case_labels field.
        (gimplify_switch_expr, gimple_add_case_label): New fns.
        (gimplify_switch_expr, gimple_add_case_label): New fns.
        (simplify_expr): Use them.
        (simplify_expr): Use them.
2003-04-24  Andrew MacLeod  
2003-04-24  Andrew MacLeod  
        * tree-flow.h (processed_out_of_ssa): Rename to out_of_ssa_tag.
        * tree-flow.h (processed_out_of_ssa): Rename to out_of_ssa_tag.
        * tree-ssa-live.c (register_ssa_partition): Add variable to partition.
        * tree-ssa-live.c (register_ssa_partition): Add variable to partition.
        (change_partition_var): Use out_of_ssa_tag.
        (change_partition_var): Use out_of_ssa_tag.
        (create_ssa_var_map): Add all uses, defs and PHI elements to partition.
        (create_ssa_var_map): Add all uses, defs and PHI elements to partition.
        (new_tree_live_info): Create a live range info structure.
        (new_tree_live_info): Create a live range info structure.
        (delete_tree_live_info): Free storage.
        (delete_tree_live_info): Free storage.
        (live_worklist): Fill in the live range info for a variable for the
        (live_worklist): Fill in the live range info for a variable for the
        blocks between the def and all the blocks containing uses.
        blocks between the def and all the blocks containing uses.
        (set_if_valid): Set partition bit if variable is in a partition.
        (set_if_valid): Set partition bit if variable is in a partition.
        (add_livein_if_notdef): Set live on entry bit for a var's partition
        (add_livein_if_notdef): Set live on entry bit for a var's partition
        if a definition has not been seen.
        if a definition has not been seen.
        (calculate_live_on_entry): Create partition live on entry bitmaps for
        (calculate_live_on_entry): Create partition live on entry bitmaps for
        all basic blocks .
        all basic blocks .
        (calculate_live_on_exit): Calculate live on exit information for each
        (calculate_live_on_exit): Calculate live on exit information for each
        basic block.
        basic block.
        (init_root_var): Initialize and fill in a root_var structure.
        (init_root_var): Initialize and fill in a root_var structure.
        (remove_root_var_partition): remove a partition from a root_var list.
        (remove_root_var_partition): remove a partition from a root_var list.
        (delete_root_var): Free storage.
        (delete_root_var): Free storage.
        (dump_root_var): Display root_var summary.
        (dump_root_var): Display root_var summary.
        (dump_var_map): Show extra info for ssa name versions.
        (dump_var_map): Show extra info for ssa name versions.
        * tree-ssa-live.h (NO_PARTITION): Define.
        * tree-ssa-live.h (NO_PARTITION): Define.
        (register_ssa_partition): Remove.
        (register_ssa_partition): Remove.
        (partition_to_var): Use partition_find after decompressing.
        (partition_to_var): Use partition_find after decompressing.
        (var_to_partition): Return NO_PARTITION if var is not in a partition.
        (var_to_partition): Return NO_PARTITION if var is not in a partition.
        (struct tree_live_info_d): Define live range info structure.
        (struct tree_live_info_d): Define live range info structure.
        (partition_is_global): Return 1 if used outside a basic block.
        (partition_is_global): Return 1 if used outside a basic block.
        (live_entry_blocks): Return bitmap over blocks that partition is live
        (live_entry_blocks): Return bitmap over blocks that partition is live
        on entry to.
        on entry to.
        (live_on_exit): Return bitmap of partitions live on exit from a block.
        (live_on_exit): Return bitmap of partitions live on exit from a block.
        (struct root_var_d): Define a root_var structure.
        (struct root_var_d): Define a root_var structure.
        (ROOT_VAR_NONE): Define.
        (ROOT_VAR_NONE): Define.
        (num_root_vars): Number of variables in root_var object.
        (num_root_vars): Number of variables in root_var object.
        (root_var): Return variable for a root_var index.
        (root_var): Return variable for a root_var index.
        (first_root_var_partition): Return first partition for a root_var.
        (first_root_var_partition): Return first partition for a root_var.
        (next_root_var_partition): Get next partition for a root_var.
        (next_root_var_partition): Get next partition for a root_var.
        (find_root_var): Find root_var index for a specific partition.
        (find_root_var): Find root_var index for a specific partition.
        * tree-ssa.c (eliminate_extraneous_phis): Remove.
        * tree-ssa.c (eliminate_extraneous_phis): Remove.
        (set_if_valid): Set partition bit if variable is in a partition.
        (set_if_valid): Set partition bit if variable is in a partition.
        (add_conflicts_if_valid): Add conflict between variable and all
        (add_conflicts_if_valid): Add conflict between variable and all
        related partitions set in a bitvector.
        related partitions set in a bitvector.
        (coalesce_ssa_name): Create a conflict graph and coalesce all
        (coalesce_ssa_name): Create a conflict graph and coalesce all
        partitions which don't conflict and are related by the same root_var.
        partitions which don't conflict and are related by the same root_var.
        (assign_vars): Use a root_var object, and assign different real
        (assign_vars): Use a root_var object, and assign different real
        variables to all partitions.
        variables to all partitions.
        (rewrite_out_of_ssa): Call compact_var_map() once, and don't call
        (rewrite_out_of_ssa): Call compact_var_map() once, and don't call
        eliminate_extraneous_phis.
        eliminate_extraneous_phis.
2003-04-23  Daniel Berlin  
2003-04-23  Daniel Berlin  
        * tree-flow.h (create_global_var): Add prototype.
        * tree-flow.h (create_global_var): Add prototype.
        * tree-dfa.c (create_global_var): Externalize.
        * tree-dfa.c (create_global_var): Externalize.
        * tree-alias-common.c: Set DECL_CONTEXT on our temp alias vars.
        * tree-alias-common.c: Set DECL_CONTEXT on our temp alias vars.
        (call_may_clobber): Make a copy of this function, since our version
        (call_may_clobber): Make a copy of this function, since our version
        will be slightly different soon.
        will be slightly different soon.
        (create_alias_vars): We need global_var, so create it if necessary.
        (create_alias_vars): We need global_var, so create it if necessary.
2003-04-23  Daniel Berlin  
2003-04-23  Daniel Berlin  
        * tree-ssa-pre.c (do_proper_save): Remove old code, since the new
        * tree-ssa-pre.c (do_proper_save): Remove old code, since the new
        insertion code works okay.
        insertion code works okay.
        (pre_expression): Use new_rename_1, it removes a *lot* of useless
        (pre_expression): Use new_rename_1, it removes a *lot* of useless
        saves.
        saves.
2003-04-23  Jeff Law  
2003-04-23  Jeff Law  
        * gimplify.c (simplify_target_expr): Make sure to simplify
        * gimplify.c (simplify_target_expr): Make sure to simplify
        the cleanup too.
        the cleanup too.
        * tree-ssa.c (struct def_blocks_d): Add new field phi_insertion_points.
        * tree-ssa.c (struct def_blocks_d): Add new field phi_insertion_points.
        (compute_global_livein): Accept varray rather than bitmaps.  Callers
        (compute_global_livein): Accept varray rather than bitmaps.  Callers
        updated.  Rewrite to compute global life information for all the
        updated.  Rewrite to compute global life information for all the
        objects in the varray in parallel.
        objects in the varray in parallel.
        (insert_phis_for_deferred_variables): New function.
        (insert_phis_for_deferred_variables): New function.
        (insert_phi_nodes_for): New argument DEF_MAPs.  When an object
        (insert_phi_nodes_for): New argument DEF_MAPs.  When an object
        crosses the threshold for using fully pruned PHI insertions,
        crosses the threshold for using fully pruned PHI insertions,
        push it on the def_maps varray for deferred processing.
        push it on the def_maps varray for deferred processing.
        (insert_phi_nodes): Initialize def_maps.  Pass it to
        (insert_phi_nodes): Initialize def_maps.  Pass it to
        insert_phi_nodes_for.  Drain the def_maps varray as it grows.
        insert_phi_nodes_for.  Drain the def_maps varray as it grows.
        Also drain any residual objects in def_maps.  Zero def_maps
        Also drain any residual objects in def_maps.  Zero def_maps
        when complete.
        when complete.
2003-04-21  Jeff Law  
2003-04-21  Jeff Law  
        * tree-cfg.c (find_contained_blocks_and_edge_targets): New function.
        * tree-cfg.c (find_contained_blocks_and_edge_targets): New function.
        (try_finallys): New varray used during edge creation.
        (try_finallys): New varray used during edge creation.
        (make_edges): Initialize try_finallys varray.  After creating
        (make_edges): Initialize try_finallys varray.  After creating
        all the "normal" edges, go back and create the special edges
        all the "normal" edges, go back and create the special edges
        for the try-finally blocks.
        for the try-finally blocks.
        (make_ctrl_stmt_edges): Create edges for the EH nodes.  Also
        (make_ctrl_stmt_edges): Create edges for the EH nodes.  Also
        make sure to build the try-finally stack.
        make sure to build the try-finally stack.
        (make_exit_edges): Create edges from calls which may throw
        (make_exit_edges): Create edges from calls which may throw
        to any directly reachable exception handlers.
        to any directly reachable exception handlers.
        (is_ctrl_altering_stmt): Statements which may throw alter
        (is_ctrl_altering_stmt): Statements which may throw alter
        flow control.
        flow control.
        * tree-cfg.c: Include except.h.
        * tree-cfg.c: Include except.h.
        (eh_stack): New file-scoped varray.
        (eh_stack): New file-scoped varray.
        (build_tree_cfg): Initialize eh_stack.
        (build_tree_cfg): Initialize eh_stack.
        (make_catch_expr_blocks): New function.
        (make_catch_expr_blocks): New function.
        (make_try_expr_blocks, make_eh_filter_expr_blocks): Likewise.
        (make_try_expr_blocks, make_eh_filter_expr_blocks): Likewise.
        (make_blocks): Call new functions as needed.  When ending a block
        (make_blocks): Call new functions as needed.  When ending a block
        due to a statement that may throw, compute the reachable exception
        due to a statement that may throw, compute the reachable exception
        handlers and store it in the statement's annotation.
        handlers and store it in the statement's annotation.
        (is_ctrl_stmt): Handle EH nodes.
        (is_ctrl_stmt): Handle EH nodes.
        (stmt_ends_bb_p): Likewise.
        (stmt_ends_bb_p): Likewise.
        * tree-flow.h (stmt_ann_d): Add new field reachable_exception_handlers.
        * tree-flow.h (stmt_ann_d): Add new field reachable_exception_handlers.
        * except.c (check_handled): No longer static.
        * except.c (check_handled): No longer static.
        * except.h (check_handled): Prototype.
        * except.h (check_handled): Prototype.
        * c-simplify.c (c_build_bind_expr): Revert change from earlier today.
        * c-simplify.c (c_build_bind_expr): Revert change from earlier today.
        * c-common.h (find_reachable_label): Prototype.
        * c-common.h (find_reachable_label): Prototype.
        * c-semantics.c (find_reachable_label): No longer static.
        * c-semantics.c (find_reachable_label): No longer static.
        * c-simplify.c (c_build_bind_expr): Avoid creating unnecessary
        * c-simplify.c (c_build_bind_expr): Avoid creating unnecessary
        BIND_EXPRs.
        BIND_EXPRs.
        (simplify_cleanup): Avoid creating unnecessary TRY_CATCH_EXPRs
        (simplify_cleanup): Avoid creating unnecessary TRY_CATCH_EXPRs
        or TRY_FINALLY_EXPRs.
        or TRY_FINALLY_EXPRs.
        (simplify_if_stmt): If the condition is constant and the
        (simplify_if_stmt): If the condition is constant and the
        unexecuted arm has no reachable code, then just emit
        unexecuted arm has no reachable code, then just emit
        the executed arm.
        the executed arm.
2003-04-18  Sebastian Pop  
2003-04-18  Sebastian Pop  
        * cfghooks.h, cfghooks.c: New files.
        * cfghooks.h, cfghooks.c: New files.
        * Makefile.in (BASIC_BLOCK_H): Depends on cfghooks.h.
        * Makefile.in (BASIC_BLOCK_H): Depends on cfghooks.h.
        (OBJS): Add cfghooks.o.
        (OBJS): Add cfghooks.o.
        (tree-optimize.o): Depends on cfgloop.h.
        (tree-optimize.o): Depends on cfgloop.h.
        (cfghooks.o): New rule.
        (cfghooks.o): New rule.
        * basic-block.h (split_edge): Rename to rtl_split_edge.
        * basic-block.h (split_edge): Rename to rtl_split_edge.
        (tree_split_edge): Declare.
        (tree_split_edge): Declare.
        (create_bb): Declare extern here.
        (create_bb): Declare extern here.
        (verify_flow_info): Rename to rtl_verify_flow_info.
        (verify_flow_info): Rename to rtl_verify_flow_info.
        (tree_verify_flow_info): Declare.
        (tree_verify_flow_info): Declare.
        (cfghooks.h): Included here.
        (cfghooks.h): Included here.
        * cfgloop.c (tree.h, tree-flow.h): Included.
        * cfgloop.c (tree.h, tree-flow.h): Included.
        (make_forwarder_block): Renamed to rtl_make_forwarder_block.
        (make_forwarder_block): Renamed to rtl_make_forwarder_block.
        (tree_make_forwarder_block): New static function.
        (tree_make_forwarder_block): New static function.
        (blocks_headers): Declared static.
        (blocks_headers): Declared static.
        (HEADER_BLOCK): Use blocks_headers instead of bb's .aux field.
        (HEADER_BLOCK): Use blocks_headers instead of bb's .aux field.
        (redirect_edge_with_latch_update, make_forwarder_block,
        (redirect_edge_with_latch_update, make_forwarder_block,
        canonicalize_loop_headers): Don't allocate .aux, but makes grow
        canonicalize_loop_headers): Don't allocate .aux, but makes grow
        the blocks_headers array.
        the blocks_headers array.
        (canonicalize_loop_headers): Register tree_make_forwarder_block
        (canonicalize_loop_headers): Register tree_make_forwarder_block
        into the tree_cfg_hooks and rtl_make_forwarder_block into the
        into the tree_cfg_hooks and rtl_make_forwarder_block into the
        rtl_cfg_hooks structure.
        rtl_cfg_hooks structure.
        (canonicalize_loop_headers): Initialize/free the blocks_headers
        (canonicalize_loop_headers): Initialize/free the blocks_headers
        array rather than the bb's .aux field.
        array rather than the bb's .aux field.
        * cfgloopmanip.c (loop_split_edge_with_NULL): New static function.
        * cfgloopmanip.c (loop_split_edge_with_NULL): New static function.
        (remove_path, force_single_succ_latches):
        (remove_path, force_single_succ_latches):
        Call loop_split_edge_with_NULL instead of loop_split_edge_with.
        Call loop_split_edge_with_NULL instead of loop_split_edge_with.
        * cfgrtl.c (split_block): Update the comment.
        * cfgrtl.c (split_block): Update the comment.
        (split_edge): Renamed rtl_split_edge.
        (split_edge): Renamed rtl_split_edge.
        (verify_flow_info): Renamed rtl_verify_flow_info.
        (verify_flow_info): Renamed rtl_verify_flow_info.
        * loop-init.c (loop_optimizer_init, loop_optimizer_finalize):
        * loop-init.c (loop_optimizer_init, loop_optimizer_finalize):
        Execute code following the value of cfg_level.
        Execute code following the value of cfg_level.
        * toplev.c (rest_of_compilation): Call rtl_register_cfg_hooks.
        * toplev.c (rest_of_compilation): Call rtl_register_cfg_hooks.
        * tree-cfg.c (create_bb): Declared extern.
        * tree-cfg.c (create_bb): Declared extern.
        (build_tree_cfg): Call tree_register_cfg_hooks.
        (build_tree_cfg): Call tree_register_cfg_hooks.
        (make_edges, make_exit_edges): Remove the use of EDGE_FALLTHRU.
        (make_edges, make_exit_edges): Remove the use of EDGE_FALLTHRU.
        (bsi_commit_first_edge_insert): Use split_edge.
        (bsi_commit_first_edge_insert): Use split_edge.
        (tree_split_edge, tree_verify_flow_info): New functions.
        (tree_split_edge, tree_verify_flow_info): New functions.
        * tree-optimize.c (cfgloop.h): Included.
        * tree-optimize.c (cfgloop.h): Included.
        (optimize_function_tree): Add #if 0'ed calls to
        (optimize_function_tree): Add #if 0'ed calls to
        loop_optimizer_init and loop_optimizer_finalize.
        loop_optimizer_init and loop_optimizer_finalize.
2003-04-16  Jeff Law  
2003-04-16  Jeff Law  
        * Makefile.in (tree-ssa.o): Depend on langhooks.h.
        * Makefile.in (tree-ssa.o): Depend on langhooks.h.
        (tree-dfa.o, tree-cfg.o): Likewise.
        (tree-dfa.o, tree-cfg.o): Likewise.
        * tree-cfg.c: Include langhooks.h
        * tree-cfg.c: Include langhooks.h
        (dump_tree_cfg): Revamp how we get the current function's name
        (dump_tree_cfg): Revamp how we get the current function's name
        to not rely on current_function_name (and implicitly cfun).
        to not rely on current_function_name (and implicitly cfun).
        (dump_cfg_stats, tree_cfg2dot): Likewise.
        (dump_cfg_stats, tree_cfg2dot): Likewise.
        * tree-dfa.c: Include langhooks.h
        * tree-dfa.c: Include langhooks.h
        (dump_immediate_uses): Revamp how we get the current function's name
        (dump_immediate_uses): Revamp how we get the current function's name
        to not rely on current_function_name (and implicitly cfun).
        to not rely on current_function_name (and implicitly cfun).
        (dump_dfa_stats, dump_alias_info): Likewise.
        (dump_dfa_stats, dump_alias_info): Likewise.
        * tree-ssa.c: Include langhooks.h
        * tree-ssa.c: Include langhooks.h
        (dump_tree_ssa): Revamp how we get the current function's name
        (dump_tree_ssa): Revamp how we get the current function's name
        to not rely on current_function_name (and implicitly cfun).
        to not rely on current_function_name (and implicitly cfun).
        * tree-cfg.c (make_loop_expr_blocks): When determining the value for
        * tree-cfg.c (make_loop_expr_blocks): When determining the value for
        NEXT_BLOCK_LINK, correctly handle empty statement nodes at the
        NEXT_BLOCK_LINK, correctly handle empty statement nodes at the
        end of the tree.
        end of the tree.
        (make_cond_expr_blocks, make_switch_expr_blocks): Likewise.
        (make_cond_expr_blocks, make_switch_expr_blocks): Likewise.
        (make_bind_expr_blocks): Likewise.
        (make_bind_expr_blocks): Likewise.
        * gimplify.c (keep_function_tree_in_gimple_form): Move check of
        * gimplify.c (keep_function_tree_in_gimple_form): Move check of
        flag_disable_simple here.  Include flags.h.
        flag_disable_simple here.  Include flags.h.
        * Makefile.in (gimplify.o): Depends on flags.h
        * Makefile.in (gimplify.o): Depends on flags.h
        * c-decl.c (c_expand_body_1): No longer check flag_disable_simple.
        * c-decl.c (c_expand_body_1): No longer check flag_disable_simple.
        * tree-inline.c (copy_body_r): Avoid creating non-gimple code
        * tree-inline.c (copy_body_r): Avoid creating non-gimple code
        when inlining a function where the RESULT_DECL's initialization
        when inlining a function where the RESULT_DECL's initialization
        is not on the RETURN_EXPR.
        is not on the RETURN_EXPR.
2003-04-15  Jeff Law  
2003-04-15  Jeff Law  
        * tree-flow.h (struct var_ann_d): Renamed is_vla_decl field to
        * tree-flow.h (struct var_ann_d): Renamed is_vla_decl field to
        has_hidden_use.
        has_hidden_use.
        (has_hidden_use, set_has_hidden_use): Renamed from is_vla_decl
        (has_hidden_use, set_has_hidden_use): Renamed from is_vla_decl
        and set_vla_decl.
        and set_vla_decl.
        * tree-flow-inline.h (has_hidden_use): Renamed from is_vla_decl.
        * tree-flow-inline.h (has_hidden_use): Renamed from is_vla_decl.
        Updated to use "has_hidden_use" instead of "is_vla_decl" field.
        Updated to use "has_hidden_use" instead of "is_vla_decl" field.
        (set_has_hidden_use): Renamed from set_vla_decl.
        (set_has_hidden_use): Renamed from set_vla_decl.
        Updated to use "has_hidden_use" instead of "is_vla_decl" field.
        Updated to use "has_hidden_use" instead of "is_vla_decl" field.
        * tree-dfa.c (dump_variable): Corresponding changes.
        * tree-dfa.c (dump_variable): Corresponding changes.
        (find_vla_decls_r): Likewise.
        (find_vla_decls_r): Likewise.
        * c-simplify.c (simplify_decl_stmt): Likewise.
        * c-simplify.c (simplify_decl_stmt): Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dce.c: Likewise.
2003-04-09  Jeff Law  
2003-04-09  Jeff Law  
        * tree-dfa.c (struct alias_set_d, field tag_sym_set): Remove
        * tree-dfa.c (struct alias_set_d, field tag_sym_set): Remove
        unused field.
        unused field.
        (register_alias_set): Rework to avoid incorrect coalescing of
        (register_alias_set): Rework to avoid incorrect coalescing of
        entries.  Fix memory leak.  No longer set field tag_sym_set.
        entries.  Fix memory leak.  No longer set field tag_sym_set.
        (get_expr_operands): ADDR_EXPR expressions may have interesting
        (get_expr_operands): ADDR_EXPR expressions may have interesting
        operands in some cases.
        operands in some cases.
2003-04-09  Diego Novillo  
2003-04-09  Diego Novillo  
        * gimplify.c (simplify_expr): Handle VECTOR_CST nodes.
        * gimplify.c (simplify_expr): Handle VECTOR_CST nodes.
        * tree-cfg.c (make_blocks): Ignore empty statement containers.
        * tree-cfg.c (make_blocks): Ignore empty statement containers.
        Create a basic block before processing containers that only have
        Create a basic block before processing containers that only have
        empty statements.
        empty statements.
        (make_loop_expr_blocks): Use the container instead of the statement
        (make_loop_expr_blocks): Use the container instead of the statement
        when setting NEXT_BLOCK_LINK.
        when setting NEXT_BLOCK_LINK.
        (make_cond_expr_blocks): Likewise.
        (make_cond_expr_blocks): Likewise.
        (make_switch_expr_blocks): Likewise.
        (make_switch_expr_blocks): Likewise.
        (make_bind_expr_blocks): Likewise.
        (make_bind_expr_blocks): Likewise.
        (successor_block): If the last statement of the block is the empty
        (successor_block): If the last statement of the block is the empty
        statement, use its container to get NEXT_BLOCK_LINK.
        statement, use its container to get NEXT_BLOCK_LINK.
        (stmt_starts_bb_p): Return false if the statement is NULL.
        (stmt_starts_bb_p): Return false if the statement is NULL.
        * tree-pretty-print.c (dump_generic_node): Handle VECTOR_CST nodes.
        * tree-pretty-print.c (dump_generic_node): Handle VECTOR_CST nodes.
        * tree-simple.c (is_simple_const): Accept VECTOR_CST as constants.
        * tree-simple.c (is_simple_const): Accept VECTOR_CST as constants.
        * objc/objc-lang.c (LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P):
        * objc/objc-lang.c (LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P):
        Define.
        Define.
2003-04-06  Diego Novillo  
2003-04-06  Diego Novillo  
        * tree-cfg.c (remove_bb): Call ssa_remove_edge.
        * tree-cfg.c (remove_bb): Call ssa_remove_edge.
        (cleanup_cond_expr_graph): Likewise.
        (cleanup_cond_expr_graph): Likewise.
        (cleanup_switch_expr_graph): Likewise.
        (cleanup_switch_expr_graph): Likewise.
        (disconnect_unreachable_case_labels): Likewise.
        (disconnect_unreachable_case_labels): Likewise.
        (merge_tree_blocks): Likewise.
        (merge_tree_blocks): Likewise.
        Update PHI nodes at BB2's successor.
        Update PHI nodes at BB2's successor.
        (dump_tree_bb): Show PHI nodes in the block.
        (dump_tree_bb): Show PHI nodes in the block.
        * tree-dfa.c (add_phi_arg): Update comment.
        * tree-dfa.c (add_phi_arg): Update comment.
        (remove_phi_arg_num): New function.
        (remove_phi_arg_num): New function.
        (remove_phi_arg): Call it.
        (remove_phi_arg): Call it.
        Move from tree-ssa.c.
        Move from tree-ssa.c.
        (remove_phi_node): Move from tree-ssa.c.
        (remove_phi_node): Move from tree-ssa.c.
        * tree-flow.h (ssa_make_edge): Declare.
        * tree-flow.h (ssa_make_edge): Declare.
        (ssa_remove_edge): Declare.
        (ssa_remove_edge): Declare.
        * tree-pretty-print.c (dump_generic_node): Show block where PHI
        * tree-pretty-print.c (dump_generic_node): Show block where PHI
        arguments are coming from.
        arguments are coming from.
        * tree-ssa-dce.c (pdom_info): New local variable.
        * tree-ssa-dce.c (pdom_info): New local variable.
        (remove_dead_stmts): Initialize it and free it at the end.
        (remove_dead_stmts): Initialize it and free it at the end.
        (remove_conditional): New function.
        (remove_conditional): New function.
        (remove_dead_stmt): Call it.
        (remove_dead_stmt): Call it.
        * tree-ssa.c (eliminate_phi): If the edge index is -1, abort
        * tree-ssa.c (eliminate_phi): If the edge index is -1, abort
        compilation.
        compilation.
        (ssa_remove_edge): New function.
        (ssa_remove_edge): New function.
        (ssa_make_edge): New function.
        (ssa_make_edge): New function.
2003-04-06  Andrew MacLeod  
2003-04-06  Andrew MacLeod  
        * tree-cfg.c (push_bsi): New. Push a block_stmt_iterator onto a stack.
        * tree-cfg.c (push_bsi): New. Push a block_stmt_iterator onto a stack.
        (pop_bsi): New. Pop a block_stmt_iterator off a stack.
        (pop_bsi): New. Pop a block_stmt_iterator off a stack.
        * tree-flow-inline.h (struct bsi_list_d): Block iterator stack struct.
        * tree-flow-inline.h (struct bsi_list_d): Block iterator stack struct.
        (new_bsi_list): Start a new bsi stack.
        (new_bsi_list): Start a new bsi stack.
        (empty_bsi_stack): Is stack empty.
        (empty_bsi_stack): Is stack empty.
        (FOR_EACH_BSI_IN_REVERSE): Macro for processing bsi's in reverse.
        (FOR_EACH_BSI_IN_REVERSE): Macro for processing bsi's in reverse.
        (FOR_EACH_STMT_IN_REVERSE): Macro for processing stmt's in reverse.
        (FOR_EACH_STMT_IN_REVERSE): Macro for processing stmt's in reverse.
2003-04-06  Andreas Jaeger  
2003-04-06  Andreas Jaeger  
        * treelang/treetree.c (tree_code_create_function_initial): Replace
        * treelang/treetree.c (tree_code_create_function_initial): Replace
        calls to non-existent function annotate_with_file_line_column with
        calls to non-existent function annotate_with_file_line_column with
        calls to annotate_with_file_line.
        calls to annotate_with_file_line.
        (tree_code_create_variable): Likewise.
        (tree_code_create_variable): Likewise.
2003-04-05  Diego Novillo  
2003-04-05  Diego Novillo  
        * tree-dfa.c (get_expr_operands): Do not clobber readonly operands
        * tree-dfa.c (get_expr_operands): Do not clobber readonly operands
        in CALL_EXPRs.
        in CALL_EXPRs.
        (find_vars_r): Likewise.
        (find_vars_r): Likewise.
        (add_indirect_ref_var): When creating new INDIRECT_REF variables,
        (add_indirect_ref_var): When creating new INDIRECT_REF variables,
        copy the readonly attribute from the variable's type.
        copy the readonly attribute from the variable's type.
2003-04-05  Diego Novillo  
2003-04-05  Diego Novillo  
        * tree.c (copy_node): Never copy tree annotations.
        * tree.c (copy_node): Never copy tree annotations.
2003-04-05  Diego Novillo  
2003-04-05  Diego Novillo  
        * tree-ssa-ccp.c (visit_cond_stmt): Don't short circuit evaluation
        * tree-ssa-ccp.c (visit_cond_stmt): Don't short circuit evaluation
        of UNDEFINED conditional expressions.
        of UNDEFINED conditional expressions.
2003-04-04  Andrew MacLeod  
2003-04-04  Andrew MacLeod  
        * Makefile.in : Add tree-ssa-live.c and tree-ssa-live.h files.
        * Makefile.in : Add tree-ssa-live.c and tree-ssa-live.h files.
        * tree-ssa.c (struct _var_map, create_var_map, delete_var_map,
        * tree-ssa.c (struct _var_map, create_var_map, delete_var_map,
        var_from_partition, get_var_partition, mapped_var_from_ref,
        var_from_partition, get_var_partition, mapped_var_from_ref,
        compact_var_map, dump_tree_partition, set_partition_for_var,
        compact_var_map, dump_tree_partition, set_partition_for_var,
        set_var_mapping, create_var_partition): Remove.
        set_var_mapping, create_var_partition): Remove.
        (create_temp): Allow temps to be created from SSA_NAME vars as well.
        (create_temp): Allow temps to be created from SSA_NAME vars as well.
        (eliminate_name, eliminate_build, elim_backward, elim_create,
        (eliminate_name, eliminate_build, elim_backward, elim_create,
        eliminate_phi): Use new var map interface.
        eliminate_phi): Use new var map interface.
        (coalesce_ssa_name): New. Coalesce ssa_name ranges together.
        (coalesce_ssa_name): New. Coalesce ssa_name ranges together.
        (assign_vars): Assign real variables to ssa_name partitions.
        (assign_vars): Assign real variables to ssa_name partitions.
        (rewrite_out_of_ssa): Use new varmap partition and routines.
        (rewrite_out_of_ssa): Use new varmap partition and routines.
        * tree-ssa-live.h: New file
        * tree-ssa-live.h: New file
        (var_map): Structure for variable map.
        (var_map): Structure for variable map.
        (num_var_partitions): Number of partitions.
        (num_var_partitions): Number of partitions.
        (partition_to_var): Return variable for partition.
        (partition_to_var): Return variable for partition.
        (var_to_partition): Return partition variable is in.
        (var_to_partition): Return partition variable is in.
        (var_to_partition_to_var): Return variable representing partition
        (var_to_partition_to_var): Return variable representing partition
        another variable is in.
        another variable is in.
        (register_ssa_partition): Initialize a partition element as used.
        (register_ssa_partition): Initialize a partition element as used.
        * tree-ssa-live.c: New file.
        * tree-ssa-live.c: New file.
        (init_var_map): Initialize a var_map.
        (init_var_map): Initialize a var_map.
        (delete_var_map): Free storage for a var_map.
        (delete_var_map): Free storage for a var_map.
        (var_union): Combine 2 partitions.
        (var_union): Combine 2 partitions.
        (compact_var_map): Reduce the number of partitions in a var_map.
        (compact_var_map): Reduce the number of partitions in a var_map.
        (change_partition_var): Assign a specific var to a partition.
        (change_partition_var): Assign a specific var to a partition.
        (create_ssa_var_map): Initialize a var_map with referenced variables.
        (create_ssa_var_map): Initialize a var_map with referenced variables.
        (dump_var_map): Debug output for a var_map.
        (dump_var_map): Debug output for a var_map.
2003-04-03  Diego Novillo  
2003-04-03  Diego Novillo  
        * fold-const.c (fold_relational_hi_lo): Add missing comparison when
        * fold-const.c (fold_relational_hi_lo): Add missing comparison when
        folding comparisons to signed_max+1.
        folding comparisons to signed_max+1.
2003-04-02  Jason Merrill  
2003-04-02  Jason Merrill  
            Diego Novillo  
            Diego Novillo  
        * tree-inline.c (initialize_inlined_parameters): Cast argument
        * tree-inline.c (initialize_inlined_parameters): Cast argument
        types appropriately when emitting initialization assignments.
        types appropriately when emitting initialization assignments.
2003-04-01  Andrew MacLeod  
2003-04-01  Andrew MacLeod  
        * tree-cfg.c (PENDING_STMT, SET_PENDING_STMT): New Macros.
        * tree-cfg.c (PENDING_STMT, SET_PENDING_STMT): New Macros.
        (bsi_insert_on_edge): Rename to bsi_commit_first_edge_insert. Add an
        (bsi_insert_on_edge): Rename to bsi_commit_first_edge_insert. Add an
        empty annotation record to the new basic_block.
        empty annotation record to the new basic_block.
        (bsi_commit_edge_inserts): New. Commit all pending edge inserts.
        (bsi_commit_edge_inserts): New. Commit all pending edge inserts.
        (bsi_insert_on_edge): New. Add stmt to edge's pending insert list.
        (bsi_insert_on_edge): New. Add stmt to edge's pending insert list.
        * tree-flow-inline.h (phi_arg_from_edge): Return PHI index for an edge.
        * tree-flow-inline.h (phi_arg_from_edge): Return PHI index for an edge.
        (phi_element_for_edge): Return PHI element for an edge.
        (phi_element_for_edge): Return PHI element for an edge.
        * tree-flow.h (struct var_ann_d): Add auxiallary field and new
        * tree-flow.h (struct var_ann_d): Add auxiallary field and new
        bit 'processed_out_of_ssa'.
        bit 'processed_out_of_ssa'.
        * tree-ssa.c (_var_map): Structure for variable parition map.
        * tree-ssa.c (_var_map): Structure for variable parition map.
        (struct _elim_graph): Elimination graph for out-of-ssa pass.
        (struct _elim_graph): Elimination graph for out-of-ssa pass.
        (create_var_map): Create a new var_map.
        (create_var_map): Create a new var_map.
        (delete_var_map): Delete a var_map.
        (delete_var_map): Delete a var_map.
        (var_from_parition): Return var for a specified partition.
        (var_from_parition): Return var for a specified partition.
        (get_var_partition): Return partition a var belongs to.
        (get_var_partition): Return partition a var belongs to.
        (mapped_var_from_ref): Get root var for a var's partition.
        (mapped_var_from_ref): Get root var for a var's partition.
        (compact_var_map): Re-map the partitions to make the list dense.
        (compact_var_map): Re-map the partitions to make the list dense.
        (dump_var_parition): Print var_map.
        (dump_var_parition): Print var_map.
        (set_partition_for_var): Associate a real var with a partition.
        (set_partition_for_var): Associate a real var with a partition.
        (set_var_mapping): Associate an SSA version var with a real var.
        (set_var_mapping): Associate an SSA version var with a real var.
        (create_var_partition): Create a partition for processing.
        (create_var_partition): Create a partition for processing.
        (create_temp): Create a new temp variable for a partition.
        (create_temp): Create a new temp variable for a partition.
        (insert_copy_on_edge): Insert a copy between variables on an edge.
        (insert_copy_on_edge): Insert a copy between variables on an edge.
        (new_elim_graph): Create a new elimination graph.
        (new_elim_graph): Create a new elimination graph.
        (clear_elim_graph): clear an elimination graph.
        (clear_elim_graph): clear an elimination graph.
        (delete_elim_graph): Delete an elimination graph.
        (delete_elim_graph): Delete an elimination graph.
        (eliminate_name, eliminate_build, elim_forward,
        (eliminate_name, eliminate_build, elim_forward,
        elim_unvisited_predecessor, elim_backward, elim_create,
        elim_unvisited_predecessor, elim_backward, elim_create,
        eliminate_phi): Routines to implement Morgans PHI elimination algorithm.
        eliminate_phi): Routines to implement Morgans PHI elimination algorithm.
        (eliminate_extraneous_phis): Eliminate PHI nodes which will never
        (eliminate_extraneous_phis): Eliminate PHI nodes which will never
        generate code.
        generate code.
        (rewrite_out_of_ssa): Use partitions and PHI elimination algorithm.
        (rewrite_out_of_ssa): Use partitions and PHI elimination algorithm.
2003-04-01  Jeff Law  
2003-04-01  Jeff Law  
        * tree-cfg.c (make_blocks): Make sure the BIND_EXPR's subgraph
        * tree-cfg.c (make_blocks): Make sure the BIND_EXPR's subgraph
        actually ended in a statement before seeing of the statement should
        actually ended in a statement before seeing of the statement should
        end a basic block.
        end a basic block.
        * tree-cfg.c (dump_tree_cfg): Avoid crashing when cfun is NULL.
        * tree-cfg.c (dump_tree_cfg): Avoid crashing when cfun is NULL.
        (tree_cfg2dot): Likewise.
        (tree_cfg2dot): Likewise.
        * tree-dfa.c (dump_immediate_uses): Likewise.
        * tree-dfa.c (dump_immediate_uses): Likewise.
        * tree-pretty-print.c (dump_generic_node): Dump the EH_FILTER_FAILURE
        * tree-pretty-print.c (dump_generic_node): Dump the EH_FILTER_FAILURE
        nodes attached to an EH_FILTER_EXPR.
        nodes attached to an EH_FILTER_EXPR.
        * tree-dfa.c (get_stmt_operands): Add cases for TRY_FINALLY_EXPR,
        * tree-dfa.c (get_stmt_operands): Add cases for TRY_FINALLY_EXPR,
        TRY_CATCH_EXPR, CATCH_EXPR and EH_FILTER_EXPR.
        TRY_CATCH_EXPR, CATCH_EXPR and EH_FILTER_EXPR.
        (get_expr_operands): Add case for EXC_PTR_EXPR.
        (get_expr_operands): Add case for EXC_PTR_EXPR.
        * tree-dfa.c (compute_may_aliases): Accept FNDECL as an argument.
        * tree-dfa.c (compute_may_aliases): Accept FNDECL as an argument.
        Use FNDECL instead of relying on CURRENT_FUNCTION_DECL.
        Use FNDECL instead of relying on CURRENT_FUNCTION_DECL.
        * tree-flow.h (compute_may_aliases): Update prototype.
        * tree-flow.h (compute_may_aliases): Update prototype.
        * tree-ssa.c (rewrite_into_ssa): Corresponding changes.
        * tree-ssa.c (rewrite_into_ssa): Corresponding changes.
        * tree-inline.c (expand_calls_inline): Correctly handle EH_FILTER_EXPR.
        * tree-inline.c (expand_calls_inline): Correctly handle EH_FILTER_EXPR.
2003-03-31  Diego Novillo  
2003-03-31  Diego Novillo  
        * Makefile.in (STRICT_WARN, STRICT2_WARN): Remove -Wtraditional.
        * Makefile.in (STRICT_WARN, STRICT2_WARN): Remove -Wtraditional.
        * timevar.def (TV_TREE_CLEANUP_CFG): Define.
        * timevar.def (TV_TREE_CLEANUP_CFG): Define.
        * tree-cfg.c (set_parent_stmt): Add documentation.
        * tree-cfg.c (set_parent_stmt): Add documentation.
        (replace_stmt): New function.
        (replace_stmt): New function.
        (merge_tree_blocks): New function.
        (merge_tree_blocks): New function.
        (remap_stmts): New function.
        (remap_stmts): New function.
        (linearize_cond_expr): New function.
        (linearize_cond_expr): New function.
        (linearize_control_structures): New function.
        (linearize_control_structures): New function.
        (cleanup_tree_cfg): Call it.
        (cleanup_tree_cfg): Call it.
        Use new timevar TV_TREE_CLEANUP_CFG.
        Use new timevar TV_TREE_CLEANUP_CFG.
        (remove_bb): Update debugging message.
        (remove_bb): Update debugging message.
        Make sure that bb->head_tree_p and bb->end_tree_p exist before
        Make sure that bb->head_tree_p and bb->end_tree_p exist before
        resetting their basic blocks.
        resetting their basic blocks.
        (remove_stmt): When removing a control flow expression, update
        (remove_stmt): When removing a control flow expression, update
        basic block flags.
        basic block flags.
        (cleanup_control_flow): Make sure that the block contains
        (cleanup_control_flow): Make sure that the block contains
        statements.
        statements.
        (last_stmt): Reformat for readability.
        (last_stmt): Reformat for readability.
        (last_stmt_ptr): Return NULL if the block has no statements.
        (last_stmt_ptr): Return NULL if the block has no statements.
        * tree-flow-inline.h (parent_block): Check that the block is not
        * tree-flow-inline.h (parent_block): Check that the block is not
        empty.
        empty.
        * tree-flow.h (bb_empty_p): Remove.
        * tree-flow.h (bb_empty_p): Remove.
        * tree-inline.c (copy_tree_r): Do not copy empty_stmt_node.
        * tree-inline.c (copy_tree_r): Do not copy empty_stmt_node.
        * tree-ssa-dce.c (tree_ssa_dce): Call cleanup_tree_cfg.
        * tree-ssa-dce.c (tree_ssa_dce): Call cleanup_tree_cfg.
        * tree.c (body_is_empty): New function.
        * tree.c (body_is_empty): New function.
        * tree.h (body_is_empty): Declare.
        * tree.h (body_is_empty): Declare.
2003-03-31  Jeff Law  
2003-03-31  Jeff Law  
        * tree-ssa-ccp.c (simulate_block): Add abnormal edges out of a
        * tree-ssa-ccp.c (simulate_block): Add abnormal edges out of a
        block to the edge worklist after simulating a block for the
        block to the edge worklist after simulating a block for the
        first time.  If the block has a single outgoing normal edge,
        first time.  If the block has a single outgoing normal edge,
        add that edge to the worklist after simulating the block for
        add that edge to the worklist after simulating the block for
        the first time.
        the first time.
2003-03-31  Frank Ch. Eigler  
2003-03-31  Frank Ch. Eigler  
        * gcc.c (MFLIB_SPEC): Remove -ld.
        * gcc.c (MFLIB_SPEC): Remove -ld.
        (MFWRAP_SPEC): Remove dlopen wrapping.
        (MFWRAP_SPEC): Remove dlopen wrapping.
2003-03-28  Diego Novillo  
2003-03-28  Diego Novillo  
        * tree-ssa.c (rewrite_block): Add new argument 'eq_expr_value'.
        * tree-ssa.c (rewrite_block): Add new argument 'eq_expr_value'.
        Update all users.
        Update all users.
        If 'eq_expr_value' is given, use it to register a new
        If 'eq_expr_value' is given, use it to register a new
        value for the variable given on the LHS.
        value for the variable given on the LHS.
        If the block ends in a conditional expression of the form 'X == Y',
        If the block ends in a conditional expression of the form 'X == Y',
        propagate 'X = Y' into the THEN_CLAUSE.
        propagate 'X = Y' into the THEN_CLAUSE.
        (MAY_COPYPROP_P): Define.
        (MAY_COPYPROP_P): Define.
        (rewrite_stmt): Call it.
        (rewrite_stmt): Call it.
        (register_new_def): Fix comment.
        (register_new_def): Fix comment.
        (get_eq_expr_value): New function.
        (get_eq_expr_value): New function.
2003-03-28  Diego Novillo  
2003-03-28  Diego Novillo  
        * basic-block.h (BB_COMPOUND_ENTRY): Remove.  Update all users
        * basic-block.h (BB_COMPOUND_ENTRY): Remove.  Update all users
        everywhere.
        everywhere.
        * tree-cfg.c: Minor fixes to various comments.
        * tree-cfg.c: Minor fixes to various comments.
        * tree-optimize.c (optimize_function_tree): Dump optimized function
        * tree-optimize.c (optimize_function_tree): Dump optimized function
        after SSA->normal conversion.
        after SSA->normal conversion.
2003-03-26  Daniel Berlin  
2003-03-26  Daniel Berlin  
        * tree-ssa-pre.c:  Implement open64 renaming algorithm.
        * tree-ssa-pre.c:  Implement open64 renaming algorithm.
        (subst_phis): New function.
        (subst_phis): New function.
        (generate_expr_as_of_bb): Ditto.
        (generate_expr_as_of_bb): Ditto.
        (new_rename_1): Ditto.
        (new_rename_1): Ditto.
        (process_delayed_rename): Ditto.
        (process_delayed_rename): Ditto.
        (do_proper_save): Use bsi_* functions for insertion, don't remove
        (do_proper_save): Use bsi_* functions for insertion, don't remove
        old code quite yet, haven't fully tested.
        old code quite yet, haven't fully tested.
        Also add argument that says whether to insert before use or after use.
        Also add argument that says whether to insert before use or after use.
        (defs_y_dom_x): Factor through injuries properly.
        (defs_y_dom_x): Factor through injuries properly.
        (defs_match_p): Ditto.
        (defs_match_p): Ditto.
        (phi_opnd_from_res): Attempt to fix, and remove useless argument.
        (phi_opnd_from_res): Attempt to fix, and remove useless argument.
        (reset_can_be_avail): Fix broken condition that would cause infinite
        (reset_can_be_avail): Fix broken condition that would cause infinite
        loop.
        loop.
        (update_old_new): #if 0 updating of bb heads.
        (update_old_new): #if 0 updating of bb heads.
        (finalize_1): We occasionally get 5 + a rather than a + 5, so we
        (finalize_1): We occasionally get 5 + a rather than a + 5, so we
        need to make sure 5 is a DECL before trying to get a reaching def.
        need to make sure 5 is a DECL before trying to get a reaching def.
        (repair_use_injury): If we couldn't find a reaching def, we don't need
        (repair_use_injury): If we couldn't find a reaching def, we don't need
        to repair it.
        to repair it.
        (assign_new_class): Only push to stack2 if it exists (so we can
        (assign_new_class): Only push to stack2 if it exists (so we can
        share this function in both rename implementations).
        share this function in both rename implementations).
        (create_ephi_node): Add argument that says whether to add ephi
        (create_ephi_node): Add argument that says whether to add ephi
        to block or not (we create them sometimes for validation only).
        to block or not (we create them sometimes for validation only).
        (tree_perform_ssapre): Skip expressions without any uses.
        (tree_perform_ssapre): Skip expressions without any uses.
        * tree.h: Add EREF_DELAYED_RENAME.
        * tree.h: Add EREF_DELAYED_RENAME.
        (struct tree_eref_common): Add delayed_rename bit.
        (struct tree_eref_common): Add delayed_rename bit.
2003-03-25  Diego Novillo  
2003-03-25  Diego Novillo  
        * tree-simple.c: Use tree codes to document grammar for relational
        * tree-simple.c: Use tree codes to document grammar for relational
        operators &&, || and ^.
        operators &&, || and ^.
2003-03-25  Diego Novillo  
2003-03-25  Diego Novillo  
        * cfg.c (dump_edge_info): Add labels for EDGE_TRUE_VALUE,
        * cfg.c (dump_edge_info): Add labels for EDGE_TRUE_VALUE,
        EDGE_FALSE_VALUE and EDGE_EXECUTABLE.
        EDGE_FALSE_VALUE and EDGE_EXECUTABLE.
        * tree-cfg.c (dump_tree_bb): Change formatting.  Show all
        * tree-cfg.c (dump_tree_bb): Change formatting.  Show all
        statements in the block.
        statements in the block.
        * tree-simple.c: Update documentation for GIMPLE conditional
        * tree-simple.c: Update documentation for GIMPLE conditional
        expressions.
        expressions.
2003-03-24  Diego Novillo  
2003-03-24  Diego Novillo  
        * tree-dfa.c (get_expr_operands): If there are no call clobbered
        * tree-dfa.c (get_expr_operands): If there are no call clobbered
        variables, don't create a VDEF for GLOBAL_VAR at clobbering
        variables, don't create a VDEF for GLOBAL_VAR at clobbering
        CALL_EXPRS.
        CALL_EXPRS.
        * tree-flow.h (fold_stmt): Declare.
        * tree-flow.h (fold_stmt): Declare.
        * tree-ssa-ccp.c (fold_stmt): Change to extern declaration.
        * tree-ssa-ccp.c (fold_stmt): Change to extern declaration.
        * tree-ssa.c (rewrite_stmt): Call it.
        * tree-ssa.c (rewrite_stmt): Call it.
2003-03-22  Diego Novillo  
2003-03-22  Diego Novillo  
        * Makefile.in (gtype-desc.o): Add dependency on $(TREE_FLOW_H).
        * Makefile.in (gtype-desc.o): Add dependency on $(TREE_FLOW_H).
        * tree-dfa.c (struct alias_set_d): Add field 'num_elements'.
        * tree-dfa.c (struct alias_set_d): Add field 'num_elements'.
        (struct walk_state): Move declaration earlier in the file.
        (struct walk_state): Move declaration earlier in the file.
        (create_global_var): New local function.
        (create_global_var): New local function.
        (num_referenced_vars, num_aliased_objects): Change type to
        (num_referenced_vars, num_aliased_objects): Change type to
        'size_t'.  Update all users.
        'size_t'.  Update all users.
        (aliased_objects, aliased_objects_base, aliased_objects_aliase_set):
        (aliased_objects, aliased_objects_base, aliased_objects_aliase_set):
        Mark for garbage collection.
        Mark for garbage collection.
        (num_call_clobbered_vars, call_clobbered_vars): New global
        (num_call_clobbered_vars, call_clobbered_vars): New global
        variable.
        variable.
        (get_expr_operands): For CALL_EXPRs, add a VUSE or VDEF reference
        (get_expr_operands): For CALL_EXPRs, add a VUSE or VDEF reference
        for every pointer argument.  If the call may clobber, add a VDEF,
        for every pointer argument.  If the call may clobber, add a VDEF,
        otherwise add a VUSE.
        otherwise add a VUSE.
        If the call may clobber, add VDEF for GLOBAL_VAR.
        If the call may clobber, add VDEF for GLOBAL_VAR.
        (dump_variable): Show whether the variable is call clobbered.
        (dump_variable): Show whether the variable is call clobbered.
        (dump_dfa_stats): Show call clobbered variables.
        (dump_dfa_stats): Show call clobbered variables.
        (compute_may_aliases): Minor formatting changes.
        (compute_may_aliases): Minor formatting changes.
        (compute_alias_sets): If the function makes clobbering calls, add
        (compute_alias_sets): If the function makes clobbering calls, add
        GLOBAL_VAR as an alias to every call-clobbered variable.
        GLOBAL_VAR as an alias to every call-clobbered variable.
        Remove alias sets that have exactly one element.
        Remove alias sets that have exactly one element.
        (register_alias_set): Set 'num_elements' to zero for every newly
        (register_alias_set): Set 'num_elements' to zero for every newly
        created alias set.
        created alias set.
        (find_alias_for): Don't make a second call to add_may_alias to make
        (find_alias_for): Don't make a second call to add_may_alias to make
        alias tags alias themselves.  It's redundant.
        alias tags alias themselves.  It's redundant.
        Increment 'num_elements' when adding a new alias to an alias set.
        Increment 'num_elements' when adding a new alias to an alias set.
        (may_alias_p): Don't handle GLOBAL_VAR.
        (may_alias_p): Don't handle GLOBAL_VAR.
        Check for structure aliasing when either PTR or VAR are a
        Check for structure aliasing when either PTR or VAR are a
        structure.  Don't do it only when both are structures.
        structure.  Don't do it only when both are structures.
        (dump_alias_info): Show all aliases of each variable.
        (dump_alias_info): Show all aliases of each variable.
        (find_vars_r): When processing a CALL_EXPR node, set
        (find_vars_r): When processing a CALL_EXPR node, set
        walk_state->is_store if the function may clobber and create a
        walk_state->is_store if the function may clobber and create a
        reference to GLOBAL_VAR.
        reference to GLOBAL_VAR.
        (add_indirect_ref_var): Change type of second argument from 'void *'
        (add_indirect_ref_var): Change type of second argument from 'void *'
        to 'struct walk_state *'.  Update all users.
        to 'struct walk_state *'.  Update all users.
        (add_referenced_var): Likewise.  If a potentially aliased variabe
        (add_referenced_var): Likewise.  If a potentially aliased variabe
        is not declared 'const', add it to the list of call clobbered
        is not declared 'const', add it to the list of call clobbered
        variables.
        variables.
        * tree-flow.h (struct var_ann_d): Add field 'is_call_clobbered'.
        * tree-flow.h (struct var_ann_d): Add field 'is_call_clobbered'.
        Change type of field 'uid' to size_t.  Update all users.
        Change type of field 'uid' to size_t.  Update all users.
        (stmt_ann_d): Add field 'makes_clobbering_call'.
        (stmt_ann_d): Add field 'makes_clobbering_call'.
        (next_tree_ref_id): Remove unused variable.
        (next_tree_ref_id): Remove unused variable.
        (call_clobbered_vars): Declare.
        (call_clobbered_vars): Declare.
        (num_call_clobbered_vars): Declare.
        (num_call_clobbered_vars): Declare.
        (call_clobbered_var): New inline function.
        (call_clobbered_var): New inline function.
        * tree-ssa-ccp.c (visit_phi_node): If the LHS of a PHI node is
        * tree-ssa-ccp.c (visit_phi_node): If the LHS of a PHI node is
        volatile, mark the PHI node VARYING without checking its arguments.
        volatile, mark the PHI node VARYING without checking its arguments.
        (visit_assignment): Likewise.
        (visit_assignment): Likewise.
        (set_value): Remove.  Update all users.
        (set_value): Remove.  Update all users.
        (likely_value): If the statement makes aliased loads or has
        (likely_value): If the statement makes aliased loads or has
        volatile operands, consider it VARYING.
        volatile operands, consider it VARYING.
        (get_default_value): If a variable is volatile, consider it
        (get_default_value): If a variable is volatile, consider it
        VARYING.
        VARYING.
        * tree-ssa.c (init_tree_ssa): Initialize num_call_clobbered_vars
        * tree-ssa.c (init_tree_ssa): Initialize num_call_clobbered_vars
        and call_clobbered_vars.
        and call_clobbered_vars.
        Do not create GLOBAL_VAR.  Set it to NULL_TREE.
        Do not create GLOBAL_VAR.  Set it to NULL_TREE.
        Increase initial size for various hash tables.
        Increase initial size for various hash tables.
        (delete_tree_ssa): Reset num_call_clobbered_vars and
        (delete_tree_ssa): Reset num_call_clobbered_vars and
        call_clobbered_vars.
        call_clobbered_vars.
        (get_reaching_def): Rename from currdef_for.  Update all users.
        (get_reaching_def): Rename from currdef_for.  Update all users.
        Always create default definitions for variables that need them.
        Always create default definitions for variables that need them.
        Callers that use to call currdef_for with the second argument set
        Callers that use to call currdef_for with the second argument set
        to false now call get_value_for.
        to false now call get_value_for.
        (htab_statistics): New function.
        (htab_statistics): New function.
        (dump_tree_ssa): Call it.
        (dump_tree_ssa): Call it.
        (avail_expr_eq): Also compare VUSE operands.
        (avail_expr_eq): Also compare VUSE operands.
2003-03-21  Jeff Law  
2003-03-21  Jeff Law  
        * tree-dfa.c: Revert vla changes from yesterday.
        * tree-dfa.c: Revert vla changes from yesterday.
        (find_vla_decls_r): Do not look inside TYPE_DECLs.
        (find_vla_decls_r): Do not look inside TYPE_DECLs.
2003-03-20  Jeff Law  
2003-03-20  Jeff Law  
        * gimplify.c (simplify_return_expr): Tighten condition for
        * gimplify.c (simplify_return_expr): Tighten condition for
        converting the RHS of a MODIFY_EXPR in a RETURN_EXPR to a
        converting the RHS of a MODIFY_EXPR in a RETURN_EXPR to a
        simple_val.  Allow returning a RESULT_DECL directly.
        simple_val.  Allow returning a RESULT_DECL directly.
        * tree-dfa.c (get_expr_operands): A RESULT_DECL can have
        * tree-dfa.c (get_expr_operands): A RESULT_DECL can have
        interesting operands.
        interesting operands.
        (clobber_vars_r): Handle RESULT_DECLs.
        (clobber_vars_r): Handle RESULT_DECLs.
        (compute_may_aliases): Initialize and free vla_htab.
        (compute_may_aliases): Initialize and free vla_htab.
        (find_vla_decls): Pass vla_htab to walk_tree.
        (find_vla_decls): Pass vla_htab to walk_tree.
        (find_vla_decls_r): Likewise.
        (find_vla_decls_r): Likewise.
        * tree.h (SSA_DECL_P): Accept RESULT_DECLs.
        * tree.h (SSA_DECL_P): Accept RESULT_DECLs.
2003-03-19  Jeff Law  
2003-03-19  Jeff Law  
        * gimplify.c (simplify_return_expr): Only allow simple values
        * gimplify.c (simplify_return_expr): Only allow simple values
        on the RHS of a MODIFY_EXPR appearing in a RETURN_EXPR.
        on the RHS of a MODIFY_EXPR appearing in a RETURN_EXPR.
        * tree-cfg.c (make_exit_edges): We no longer need to look for
        * tree-cfg.c (make_exit_edges): We no longer need to look for
        CALL_EXPRs on the RHS of a MODIFY_EXPR inside RETURN_EXPRs.
        CALL_EXPRs on the RHS of a MODIFY_EXPR inside RETURN_EXPRs.
2003-03-18  Andrew Macleod  
2003-03-18  Andrew Macleod  
        * tree-cfg.c (make_blocks): Use append_stmt_to_bb. Check for NULL
        * tree-cfg.c (make_blocks): Use append_stmt_to_bb. Check for NULL
        tsi_stmt when deciding whether to start a new block.
        tsi_stmt when deciding whether to start a new block.
        (add_stmt_to_bb): Don't update the basic block end pointer.
        (add_stmt_to_bb): Don't update the basic block end pointer.
        (append_stmt_to_bb): New. Add stmt and update the BB end pointer.
        (append_stmt_to_bb): New. Add stmt and update the BB end pointer.
        (first_stmt): Use only 1 return.
        (first_stmt): Use only 1 return.
        (last_stmt): Modified to use bsi_last().
        (last_stmt): Modified to use bsi_last().
        (last_stmt_ptr): Modified to use bsi_last().
        (last_stmt_ptr): Modified to use bsi_last().
        (bsi_last): New. Return an iterator to the last stmt in a block.
        (bsi_last): New. Return an iterator to the last stmt in a block.
        (bsi_from_tsi): Fix bug which wouldn't set the context properly when
        (bsi_from_tsi): Fix bug which wouldn't set the context properly when
        within a nested BIND_EXPR.
        within a nested BIND_EXPR.
        (bsi_update_from_tsi): Insert helper which is more efficient than
        (bsi_update_from_tsi): Insert helper which is more efficient than
        bsi_from_tsi().
        bsi_from_tsi().
        (bsi_link_after): link in a new stmt and update the basic block
        (bsi_link_after): link in a new stmt and update the basic block
        data structures.
        data structures.
        (bsi_insert_after): Insert a new stmt into a block.
        (bsi_insert_after): Insert a new stmt into a block.
        (bsi_insert_before): Insert a new stmt into a block.
        (bsi_insert_before): Insert a new stmt into a block.
        (bsi_insert_on_edge): Insert a new stmt on an edge.
        (bsi_insert_on_edge): Insert a new stmt on an edge.
        * tree-flow-inline.h (is_label_stmt): Return true if stmt can be a
        * tree-flow-inline.h (is_label_stmt): Return true if stmt can be a
        target of a control transfer.
        target of a control transfer.
        * tree-flow.h (is_label_stmt, bsi_last): New prototypes.
        * tree-flow.h (is_label_stmt, bsi_last): New prototypes.
2003-03-12  Jeff Law  
2003-03-12  Jeff Law  
        * c-simplify.c (simplify_switch_stmt): Save the type of the original
        * c-simplify.c (simplify_switch_stmt): Save the type of the original
        condition in TREE_TYPE (SWITCH_EXPR (...)).  Annotate the SWITCH_EXPR
        condition in TREE_TYPE (SWITCH_EXPR (...)).  Annotate the SWITCH_EXPR
        with file/line information.
        with file/line information.
        * expr.c (expand_expr, case SWITCH_EXPR): Use expand_end_case_type.
        * expr.c (expand_expr, case SWITCH_EXPR): Use expand_end_case_type.
        * tree.def (SWITCH_EXPR): Document meaning of TREE_TYPE field of
        * tree.def (SWITCH_EXPR): Document meaning of TREE_TYPE field of
        the SWITCH_EXPR.
        the SWITCH_EXPR.
        * c-simplify.c (simplify_block): Set the current line number to
        * c-simplify.c (simplify_block): Set the current line number to
        the line associated with the end of the block.
        the line associated with the end of the block.
        * c-decl.c (finish_function): No longer save/restore the
        * c-decl.c (finish_function): No longer save/restore the
        current filename or linenumber around simplification.  Instead
        current filename or linenumber around simplification.  Instead
        save/restore it around inlining.
        save/restore it around inlining.
        (c_expand_body_1): Save/restore current filename and linenumber
        (c_expand_body_1): Save/restore current filename and linenumber
        around expansion of trees into RTL.
        around expansion of trees into RTL.
        * gimplify.c (simplify_function_tree): Make the current file/line
        * gimplify.c (simplify_function_tree): Make the current file/line
        number match the non-gimple code at the end of a function.
        number match the non-gimple code at the end of a function.
        * tree-cfg.c: Include toplev.h.
        * tree-cfg.c: Include toplev.h.
        (remove_bb): Warn about unreachable code.
        (remove_bb): Warn about unreachable code.
        * cfgrtl.c (verify_flow_info): Ignore EDGE_EXECUTABLE, it's for
        * cfgrtl.c (verify_flow_info): Ignore EDGE_EXECUTABLE, it's for
        the CCP optimizer only.
        the CCP optimizer only.
        * ssa.c (convert_to_ssa): Use last_basic_block, not n_basic_blocks.
        * ssa.c (convert_to_ssa): Use last_basic_block, not n_basic_blocks.
2003-03-11  Jeff Law  
2003-03-11  Jeff Law  
        * builtins.c: Fix minor comment typo.
        * builtins.c: Fix minor comment typo.
        (expand_builtin_strcmp, expand_builtin_strncmp): Remove.
        (expand_builtin_strcmp, expand_builtin_strncmp): Remove.
        (expand_builtin_strcat, expand_builtin_strncat): Likewise.
        (expand_builtin_strcat, expand_builtin_strncat): Likewise.
        (expand_builtin_strspn, expand_builtin_strcspn): Likewise.
        (expand_builtin_strspn, expand_builtin_strcspn): Likewise.
        (expand_builtin_strcopy, expand_builtin_strstr): Likewise.
        (expand_builtin_strcopy, expand_builtin_strstr): Likewise.
        (expand_builtin_strpbrk, expand_builtin_strchr): Likewise.
        (expand_builtin_strpbrk, expand_builtin_strchr): Likewise.
        (expand_builtin_strrchr, expand_builtin_fputs): Likewise.
        (expand_builtin_strrchr, expand_builtin_fputs): Likewise.
        (simplify_builtin_memcmp, simplify_builtin_strcmp): New functions.
        (simplify_builtin_memcmp, simplify_builtin_strcmp): New functions.
        (simplify_builtin_strpbrk, simplify_builtin_strstr): Likewise
        (simplify_builtin_strpbrk, simplify_builtin_strstr): Likewise
        (simplify_builtin_strchr, simplify_builtin_strrchr): Likewise
        (simplify_builtin_strchr, simplify_builtin_strrchr): Likewise
        (simplify_builtin_strcpy, simplify_builtin_strncpy): Likewise
        (simplify_builtin_strcpy, simplify_builtin_strncpy): Likewise
        (simplify_builtin_strncmp, simplify_builtin_strcat): Likewise
        (simplify_builtin_strncmp, simplify_builtin_strcat): Likewise
        (simplify_builtin_strncat, simplify_builtin_strspn): Likewise
        (simplify_builtin_strncat, simplify_builtin_strspn): Likewise
        (simplify_builtin_strcspn, simplify_builtin_fputs): Likewise
        (simplify_builtin_strcspn, simplify_builtin_fputs): Likewise
        (expand_builtin_memcmp): Use simplify_builtin_memcmp.
        (expand_builtin_memcmp): Use simplify_builtin_memcmp.
        (simplify_builtin): New function
        (simplify_builtin): New function
        (expand_builtin): Use simpify_builtin to collapse several common
        (expand_builtin): Use simpify_builtin to collapse several common
        cases together.
        cases together.
        * gimplify.c (simplify_call_expr): Accept new argument.  All
        * gimplify.c (simplify_call_expr): Accept new argument.  All
        callers updated.  Call simplify_builtin to try and simplify builtin
        callers updated.  Call simplify_builtin to try and simplify builtin
        function calls before we simplify their arguments.
        function calls before we simplify their arguments.
        * tree.h (simplify_builtin): Prototype.
        * tree.h (simplify_builtin): Prototype.
2003-03-11  Jeff Law  
2003-03-11  Jeff Law  
        * timevar.def (TV_TREE_SSA_TO_NORMAL): New timevar.
        * timevar.def (TV_TREE_SSA_TO_NORMAL): New timevar.
        * tree-cfg.c (remove_stmt): Also remove special annotations
        * tree-cfg.c (remove_stmt): Also remove special annotations
        on RHS of MODIFY_EXPR statements.
        on RHS of MODIFY_EXPR statements.
        * tree-dfa.c (create_stmt_ann): Update comments.  Fix formatting.
        * tree-dfa.c (create_stmt_ann): Update comments.  Fix formatting.
        (compute_may_aliases): Make sure timevar encloses entire routine.
        (compute_may_aliases): Make sure timevar encloses entire routine.
        * tree-ssa.c (rewrite_out_of_ssa): Enclose with a timevar.
        * tree-ssa.c (rewrite_out_of_ssa): Enclose with a timevar.
        (remove_annotations_r): Avoid walking into subtrees of anything
        (remove_annotations_r): Avoid walking into subtrees of anything
        except container nodes.  Remove the special annotation on the
        except container nodes.  Remove the special annotation on the
        RHS of MODIFY_EXPRs.
        RHS of MODIFY_EXPRs.
2003-03-10  Frank Ch. Eigler  
2003-03-10  Frank Ch. Eigler  
        * tree-mudflap.c (mx_xfn_indirect_ref): Allow unfolded "& ptr->field"
        * tree-mudflap.c (mx_xfn_indirect_ref): Allow unfolded "& ptr->field"
        constructs to pass uninstrumented.  Remove TREE_ADDRESSABLE settings.
        constructs to pass uninstrumented.  Remove TREE_ADDRESSABLE settings.
        Keep array accesses to non-ADDRESSABLE objects uninstrumented.  Update
        Keep array accesses to non-ADDRESSABLE objects uninstrumented.  Update
        __MF_TYPE_* constants for __mf_register calls.
        __MF_TYPE_* constants for __mf_register calls.
2003-03-10  Jeff Law  
2003-03-10  Jeff Law  
        * c-decl.c (c_expand_body_1): Update comments relating to
        * c-decl.c (c_expand_body_1): Update comments relating to
        re-simplification after mudflap instrumentation.  Avoid
        re-simplification after mudflap instrumentation.  Avoid
        unnecessary simplification of the function tree.
        unnecessary simplification of the function tree.
        * gimplify.c (keep_function_tree_in_gimple_form): New function.
        * gimplify.c (keep_function_tree_in_gimple_form): New function.
        * tree-inline.c: Include tree-iterator.h and tree-simple.h
        * tree-inline.c: Include tree-iterator.h and tree-simple.h
        (struct inline_data): Add new TSI field.
        (struct inline_data): Add new TSI field.
        (copy_body_r): Keep tree in gimple form when transforming a
        (copy_body_r): Keep tree in gimple form when transforming a
        RETURN_EXPR into a MODIFY_EXPR and GOTO_EXPR.
        RETURN_EXPR into a MODIFY_EXPR and GOTO_EXPR.
        (initialize_inlined_parameters): Use MODIFY_EXPR, not INIT_EXPR
        (initialize_inlined_parameters): Use MODIFY_EXPR, not INIT_EXPR
        for initialization of inlined parameters.
        for initialization of inlined parameters.
        (expand_call_inline): Save and restore the TSI around the
        (expand_call_inline): Save and restore the TSI around the
        call to expand_calls_inline.  Keep the tree in gimple form
        call to expand_calls_inline.  Keep the tree in gimple form
        when replacing a CALL_EXPR with a BIND_EXPR for the inlined
        when replacing a CALL_EXPR with a BIND_EXPR for the inlined
        body.
        body.
        (expand_calls_inline): Revamp to provide the current TSI to
        (expand_calls_inline): Revamp to provide the current TSI to
        expand_call_inline when we're working with gimple form.
        expand_call_inline when we're working with gimple form.
        * Makefile.in (tree-inline.o): Update dependencies.
        * Makefile.in (tree-inline.o): Update dependencies.
        * tree.h (keep_function_tree_in_gimple_form): Prototype.
        * tree.h (keep_function_tree_in_gimple_form): Prototype.
2003-03-10  Andrew MacLeod  
2003-03-10  Andrew MacLeod  
        * Makefile.in (tree.o): Add tree-iterator.h dependancy.
        * Makefile.in (tree.o): Add tree-iterator.h dependancy.
        * sbitmap.c (sbitmap_realloc): Grow a sbitmap structure.
        * sbitmap.c (sbitmap_realloc): Grow a sbitmap structure.
        * sbitmap.h (sbitmap_realloc): New Prototype.
        * sbitmap.h (sbitmap_realloc): New Prototype.
        * tree-cfg.c (remove_bb): Use new format for bsi_remove.
        * tree-cfg.c (remove_bb): Use new format for bsi_remove.
        (bsi_remove): Update iterator to refer to the next stmt.
        (bsi_remove): Update iterator to refer to the next stmt.
        (bsi_prev): Implement previous stmt routine.
        (bsi_prev): Implement previous stmt routine.
        (bsi_from_tsi): Create a block iterator from a tree iterator.
        (bsi_from_tsi): Create a block iterator from a tree iterator.
        * tree-flow-inline.h (bsi_prev): Remove.
        * tree-flow-inline.h (bsi_prev): Remove.
        (tsi_from_bsi): Create a tree iterator from a block iterator.
        (tsi_from_bsi): Create a tree iterator from a block iterator.
        * tree-flow.h (bsi_prev,bsi_remove): Update prototypes.
        * tree-flow.h (bsi_prev,bsi_remove): Update prototypes.
        (bsi_from_tsi, tsi_from_bsi, bsi_insert_*): New prototypes.
        (bsi_from_tsi, tsi_from_bsi, bsi_insert_*): New prototypes.
        (bsi_iterator_update): New enum type.
        (bsi_iterator_update): New enum type.
        * tree-iterator.h (tree_stmt_anchor, tsi_iterator_update): New type.
        * tree-iterator.h (tree_stmt_anchor, tsi_iterator_update): New type.
        (tsi_link_before, tsi_link_after, tsi_delink, tsi_new_stmt_list,
        (tsi_link_before, tsi_link_after, tsi_delink, tsi_new_stmt_list,
        tsi_stmt_list_head): New prototypes.
        tsi_stmt_list_head): New prototypes.
        * tree-ssa-dce.c (remove_dead_stmts): Update removal loop to allow
        * tree-ssa-dce.c (remove_dead_stmts): Update removal loop to allow
        that remove_dead_stmt update's the iterator.
        that remove_dead_stmt update's the iterator.
        (remove_dead_stmt): Use a pointer to the iterator since bsi_remove
        (remove_dead_stmt): Use a pointer to the iterator since bsi_remove
        requires it.
        requires it.
        * tree.c (tsi_link_before): New function to link a stmt before an
        * tree.c (tsi_link_before): New function to link a stmt before an
        iterator.
        iterator.
        (tsi_link_after): New function links stmt after an iterator.
        (tsi_link_after): New function links stmt after an iterator.
        (tsi_delink): Removes a stmt from a list.
        (tsi_delink): Removes a stmt from a list.
        (tsi_new_stmt_list): New function to begin a new stmt list.
        (tsi_new_stmt_list): New function to begin a new stmt list.
        (tsi_stmt_list_head): New function to get the first stmt in a list.
        (tsi_stmt_list_head): New function to get the first stmt in a list.
2003-03-07  Diego Novillo  
2003-03-07  Diego Novillo  
        * tree-cfg.c (remove_stmt): Don't assume that the statement is in
        * tree-cfg.c (remove_stmt): Don't assume that the statement is in
        SSA form.
        SSA form.
        * tree-flow.h (dump_tree_ssa_stats): Declare.
        * tree-flow.h (dump_tree_ssa_stats): Declare.
        (debug_tree_ssa_stats): Declare.
        (debug_tree_ssa_stats): Declare.
        (stmt_ann_d): Add new statement flags 'makes_aliased_loads',
        (stmt_ann_d): Add new statement flags 'makes_aliased_loads',
        'makes_aliased_stores', and 'has_volatile_ops'.
        'makes_aliased_stores', and 'has_volatile_ops'.
        * tree-dfa.c (add_stmt_operand): Set new statement flags accordingly.
        * tree-dfa.c (add_stmt_operand): Set new statement flags accordingly.
        * tree-pretty-print.c (dump_generic_node): Various cosmetic changes
        * tree-pretty-print.c (dump_generic_node): Various cosmetic changes
        to the rendering of some expressions.
        to the rendering of some expressions.
        * tree-ssa.c (struct var_value_d): Rename from struct currdef_d.
        * tree-ssa.c (struct var_value_d): Rename from struct currdef_d.
        Rename field 'currdef' to 'value'.  Update all users.
        Rename field 'currdef' to 'value'.  Update all users.
        (avail_exprs): New local hash table.
        (avail_exprs): New local hash table.
        (const_and_copies): New local hash table.
        (const_and_copies): New local hash table.
        (struct ssa_stats_d): Declare.
        (struct ssa_stats_d): Declare.
        (ssa_stats): New local variable.
        (ssa_stats): New local variable.
        (rewrite_into_ssa): Deallocate avail_exprs and const_and_copies
        (rewrite_into_ssa): Deallocate avail_exprs and const_and_copies
        after renaming.
        after renaming.
        Call dump_tree_ssa_stats() if -fdump-tree-ssa-stats is given.
        Call dump_tree_ssa_stats() if -fdump-tree-ssa-stats is given.
        (rewrite_block): Document the renaming process.
        (rewrite_block): Document the renaming process.
        Add new local stack block_avail_exprs to keep track of expressions
        Add new local stack block_avail_exprs to keep track of expressions
        made available in this block and its children.
        made available in this block and its children.
        (rewrite_stmts): Move body inside rewrite_block.
        (rewrite_stmts): Move body inside rewrite_block.
        (dump_tree_ssa_stats): New function.
        (dump_tree_ssa_stats): New function.
        (debug_tree_ssa_stats): New function.
        (debug_tree_ssa_stats): New function.
        (get_def_blocks): New function.
        (get_def_blocks): New function.
        (insert_phi_nodes_for): Call it.
        (insert_phi_nodes_for): Call it.
        (rewrite_stmt): Add support for keeping track of copies, constants
        (rewrite_stmt): Add support for keeping track of copies, constants
        and globally redundant expressions.
        and globally redundant expressions.
        (rewrite_operand): If a pointer has been copy propagated into
        (rewrite_operand): If a pointer has been copy propagated into
        another one, rewrite INDIRECT_REF nodes of the original pointer to
        another one, rewrite INDIRECT_REF nodes of the original pointer to
        refer to the new one.
        refer to the new one.
        (register_new_def): Add new argument 'var' indicating which
        (register_new_def): Add new argument 'var' indicating which
        variable is this new definition for.  Update all users.
        variable is this new definition for.  Update all users.
        (update_indirect_ref_vuses): New function.
        (update_indirect_ref_vuses): New function.
        (update_pointer_vuses): New function.
        (update_pointer_vuses): New function.
        (init_tree_ssa): Set variable 'ssa_stats' to zero.
        (init_tree_ssa): Set variable 'ssa_stats' to zero.
        Allocate memory for 'avail_exprs' and 'const_and_copies'.
        Allocate memory for 'avail_exprs' and 'const_and_copies'.
        (currdef_for): Don't mark inline.
        (currdef_for): Don't mark inline.
        Call get_value_for and set_value_for.
        Call get_value_for and set_value_for.
        (set_currdef_for): Remove.  Update all users.
        (set_currdef_for): Remove.  Update all users.
        (var_value_hash): Rename from currdef_hash.  Update all users.
        (var_value_hash): Rename from currdef_hash.  Update all users.
        (var_value_eq): Rename from currdef_eq.  Update all users.
        (var_value_eq): Rename from currdef_eq.  Update all users.
        (get_value_for): New function.
        (get_value_for): New function.
        (set_value_for): New function.
        (set_value_for): New function.
        (lookup_avail_expr): New function.
        (lookup_avail_expr): New function.
        (avail_expr_hash): New function.
        (avail_expr_hash): New function.
        (avail_expr_eq): New function.
        (avail_expr_eq): New function.
        (get_def_blocks_for): New function.
        (get_def_blocks_for): New function.
        (var_is_live): New function.
        (var_is_live): New function.
2003-03-06  Diego Novillo  
2003-03-06  Diego Novillo  
        * tree-ssa-ccp.c (likely_value): Don't assume CONSTANT if the
        * tree-ssa-ccp.c (likely_value): Don't assume CONSTANT if the
        statement has virtual uses.
        statement has virtual uses.
2003-03-05  Diego Novillo  
2003-03-05  Diego Novillo  
        * tree-dfa.c (opf_none, opf_is_def, opf_force_vop, opf_ignore_bp):
        * tree-dfa.c (opf_none, opf_is_def, opf_force_vop, opf_ignore_bp):
        New flags to alter the behavior of add_stmt_operand.
        New flags to alter the behavior of add_stmt_operand.
        (get_expr_operands): Change operand IS_DEF with FLAGS.  Update all
        (get_expr_operands): Change operand IS_DEF with FLAGS.  Update all
        users.
        users.
        When adding a VUSE for pointer dereferences in function arguments,
        When adding a VUSE for pointer dereferences in function arguments,
        don't add a superfluous VUSE for the base pointer.
        don't add a superfluous VUSE for the base pointer.
        (add_stmt_operand): Remove operands IS_DEF and FORCE_VOP.  Add
        (add_stmt_operand): Remove operands IS_DEF and FORCE_VOP.  Add
        operand FLAGS.  Update all users.
        operand FLAGS.  Update all users.
2003-03-05  Jason Merrill  
2003-03-05  Jason Merrill  
        * c-pretty-print.c (do_niy): Only print operands of expressions.
        * c-pretty-print.c (do_niy): Only print operands of expressions.
        * tree-pretty-print.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * c-simplify.c (simplify_decl_stmt): Only simplify DECL_SIZE_UNIT.
        * c-simplify.c (simplify_decl_stmt): Only simplify DECL_SIZE_UNIT.
        * gimplify.c (simplify_array_ref_to_plus): New fn.
        * gimplify.c (simplify_array_ref_to_plus): New fn.
        (simplify_array_ref): Use it.
        (simplify_array_ref): Use it.
        (build_addr_expr_with_type): Split out from build_addr_expr.
        (build_addr_expr_with_type): Split out from build_addr_expr.
        (simplify_compound_lval): Break out an ARRAY_REF with non-constant
        (simplify_compound_lval): Break out an ARRAY_REF with non-constant
        element size.
        element size.
2003-03-05  Frank Ch. Eigler  
2003-03-05  Frank Ch. Eigler  
        * gcc.c (MFWRAP_SPEC): Remove most --wrap entries.
        * gcc.c (MFWRAP_SPEC): Remove most --wrap entries.
2003-03-03  Daniel Berlin  
2003-03-03  Daniel Berlin  
        * tree-ssa-pre.c (is_strred_cand): Temporarily disable strength
        * tree-ssa-pre.c (is_strred_cand): Temporarily disable strength
        reduction while working on bootstrapping.
        reduction while working on bootstrapping.
        (requires_edge_placement): Reenable for now, until an insertion
        (requires_edge_placement): Reenable for now, until an insertion
        infrastructure exists that can handle critical edges.
        infrastructure exists that can handle critical edges.
        (count_stmts_in_bb): New function, used for verifying we do
        (count_stmts_in_bb): New function, used for verifying we do
        insertions properly.
        insertions properly.
        (update_old_new): Fix up bb heads as well.
        (update_old_new): Fix up bb heads as well.
        (do_proper_save): Handle single statement bb properly.
        (do_proper_save): Handle single statement bb properly.
        Handle BB's contained in BIND_EXPRS.
        Handle BB's contained in BIND_EXPRS.
        (code_motion): Count number of statements in bb before and after
        (code_motion): Count number of statements in bb before and after
        to make sure we don't screw up boundaries.
        to make sure we don't screw up boundaries.
        (finalize_1): Ditto.
        (finalize_1): Ditto.
        (rename_2): Fix subtle rename bug.
        (rename_2): Fix subtle rename bug.
        (phi_opnd_from_res): Do this the right way, by cloning the
        (phi_opnd_from_res): Do this the right way, by cloning the
        occurrence and modifying it, as every other PRE implementation
        occurrence and modifying it, as every other PRE implementation
        does.
        does.
        (tree_perform_ssapre): Handle comparisons too (unary exprs
        (tree_perform_ssapre): Handle comparisons too (unary exprs
        currently disabled till load PRE is reimplemented).
        currently disabled till load PRE is reimplemented).
        (reset_can_be_avail): Fix can_be_avail test.
        (reset_can_be_avail): Fix can_be_avail test.
2003-03-01  Diego Novillo  
2003-03-01  Diego Novillo  
        * doc/invoke.texi: Fix typo.
        * doc/invoke.texi: Fix typo.
2003-02-28  Aldy Hernandez  
2003-02-28  Aldy Hernandez  
            Diego Novillo  
            Diego Novillo  
        * Makefile.in (OBJS): Add tree-ssa-copyprop.o.
        * Makefile.in (OBJS): Add tree-ssa-copyprop.o.
        (tree-ssa-copyprop.o): New rule.
        (tree-ssa-copyprop.o): New rule.
        (tree-ssa-ccp.o): Add dependency on $(TREE_SIMPLE_H).
        (tree-ssa-ccp.o): Add dependency on $(TREE_SIMPLE_H).
        * timevar.def (TV_TREE_COPYPROP): New timevar.
        * timevar.def (TV_TREE_COPYPROP): New timevar.
        * flags.h (flag_tree_copyprop): Declare.
        * flags.h (flag_tree_copyprop): Declare.
        * toplev.c (flag_tree_copyprop): Define.
        * toplev.c (flag_tree_copyprop): Define.
        (f_options): Add -ftree-copyprop.
        (f_options): Add -ftree-copyprop.
        * tree.h (tree_dump_index): Add TDI_copyprop.
        * tree.h (tree_dump_index): Add TDI_copyprop.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-copyprop.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-copyprop.
        * doc/invoke.texi: Document -ftree-copyprop and -fdump-tree-copyprop.
        * doc/invoke.texi: Document -ftree-copyprop and -fdump-tree-copyprop.
        * tree-ssa-copyprop.c: New file.
        * tree-ssa-copyprop.c: New file.
        * tree-flow.h (tree_ssa_copyprop): Declare.
        * tree-flow.h (tree_ssa_copyprop): Declare.
        * tree-optimize.c (optimize_function_tree): Call it.
        * tree-optimize.c (optimize_function_tree): Call it.
        * tree-dfa.c (add_vuse): Make extern.  Update all users.
        * tree-dfa.c (add_vuse): Make extern.  Update all users.
        * tree-ssa.c (mark_def_sites): VUSEs are stored in a varray of trees.
        * tree-ssa.c (mark_def_sites): VUSEs are stored in a varray of trees.
2003-02-28  Frank Ch. Eigler  
2003-02-28  Frank Ch. Eigler  
        * tree-mudflap.c (mudflap_enqueue_decl): Ignore extern artificial
        * tree-mudflap.c (mudflap_enqueue_decl): Ignore extern artificial
        variable declarations.
        variable declarations.
2003-02-27  Diego Novillo  
2003-02-27  Diego Novillo  
        * tree-dfa.c (get_stmt_operands): INIT_EXPR nodes cannot
        * tree-dfa.c (get_stmt_operands): INIT_EXPR nodes cannot
        appear in GIMPLE form.  Don't handle them.
        appear in GIMPLE form.  Don't handle them.
        (get_expr_operands): Likewise.
        (get_expr_operands): Likewise.
        (find_vars_r): Likewise.
        (find_vars_r): Likewise.
        * tree-ssa-ccp.c (get_rhs): Likewise.
        * tree-ssa-ccp.c (get_rhs): Likewise.
        (set_rhs): Likewise.
        (set_rhs): Likewise.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
2003-02-27  Diego Novillo  
2003-02-27  Diego Novillo  
        * tree-ssa-ccp.c (ccp_fold): Fold builtins by replacing and
        * tree-ssa-ccp.c (ccp_fold): Fold builtins by replacing and
        restoring their arguments.
        restoring their arguments.
2003-02-27  Jeff Law  
2003-02-27  Jeff Law  
        * tree-dfa.c (find_vars_r): Clear *walk_subtrees appropriately
        * tree-dfa.c (find_vars_r): Clear *walk_subtrees appropriately
        to avoid useless walking of subtrees.
        to avoid useless walking of subtrees.
        * fold-const.c (nondestructive_fold_binary_to_constant): Renamed
        * fold-const.c (nondestructive_fold_binary_to_constant): Renamed
        from nondestructive_fold_binary.  Update comments slightly.
        from nondestructive_fold_binary.  Update comments slightly.
        (nondestructive_fold_unary_to_constant): Similarly.
        (nondestructive_fold_unary_to_constant): Similarly.
        (fold_relational_hi_lo): Corresponding changes.
        (fold_relational_hi_lo): Corresponding changes.
        * tree-ssa-ccp.c (ccp_fold): Corresponding changes.
        * tree-ssa-ccp.c (ccp_fold): Corresponding changes.
        * tree.h: Corresponding changes.
        * tree.h: Corresponding changes.
2003-02-26  Jeff Law  
2003-02-26  Jeff Law  
        * tree-ssa-ccp.c (ccp_fold): Also handle folding of calls to
        * tree-ssa-ccp.c (ccp_fold): Also handle folding of calls to
        builtin functions.
        builtin functions.
        * fold-const.c (nondestructive_fold_binary): Handle truth ops
        * fold-const.c (nondestructive_fold_binary): Handle truth ops
        when both arguments are constant (duh!).  Handle CONJ_EXPR.
        when both arguments are constant (duh!).  Handle CONJ_EXPR.
2003-02-26  Daniel Berlin  
2003-02-26  Daniel Berlin  
        * flags.h: Remove flag_ip.
        * flags.h: Remove flag_ip.
        * toplev.c: Ditto.
        * toplev.c: Ditto.
        * tree-alias-ander.c: s/flag_ip/flag_unit_at_a_time/g.
        * tree-alias-ander.c: s/flag_ip/flag_unit_at_a_time/g.
        (andersen_cleanup): Set region to null when done.
        (andersen_cleanup): Set region to null when done.
        (andersen_function_call): Check DECL_PTA_TYPEVAR, not
        (andersen_function_call): Check DECL_PTA_TYPEVAR, not
        DECL_SAVED_TREE.
        DECL_SAVED_TREE.
        * tree-alias-common.c: s/SSA_DECL_P/DECL_P/g.
        * tree-alias-common.c: s/SSA_DECL_P/DECL_P/g.
        (get_alias_var_decl): Remove dead code, fix bug in what is a
        (get_alias_var_decl): Remove dead code, fix bug in what is a
        local alias var.
        local alias var.
        (find_func_aliases): Use get_alias_var, not create_fun_alias_var.
        (find_func_aliases): Use get_alias_var, not create_fun_alias_var.
        (create_fun_alias_var): Fix to use DECL_PTA_TYPEVAR.
        (create_fun_alias_var): Fix to use DECL_PTA_TYPEVAR.
        Use get_alias_var rather than create_alias_var.
        Use get_alias_var rather than create_alias_var.
        (create_fun_alias_var_ptf): Ditto.
        (create_fun_alias_var_ptf): Ditto.
        (create_alias_vars): Ditto.
        (create_alias_vars): Ditto.
        * tree-dfa.c (compute_may_aliases): Fix check for
        * tree-dfa.c (compute_may_aliases): Fix check for
        create_alias_vars.
        create_alias_vars.
        Move deletion of alias vars back to here, from tree-ssa.c
        Move deletion of alias vars back to here, from tree-ssa.c
        * tree-ssa.c (delete_tree_ssa): Remove delete_alias_vars call.
        * tree-ssa.c (delete_tree_ssa): Remove delete_alias_vars call.
2003-02-25  Jeff Law  
2003-02-25  Jeff Law  
            Diego Novillo  
            Diego Novillo  
        * tree-ssa-ccp.c (likely_value): If the statement has no
        * tree-ssa-ccp.c (likely_value): If the statement has no
        use operands, then return CONSTANT.
        use operands, then return CONSTANT.
        * fold-const.c (nondestructive_fold_binary): Handle TRUTH_AND_EXPR
        * fold-const.c (nondestructive_fold_binary): Handle TRUTH_AND_EXPR
        and TRUTH_OR_EXPR.  Placeholder for TRUTH_XOR_EXPR.
        and TRUTH_OR_EXPR.  Placeholder for TRUTH_XOR_EXPR.
        * tree-ssa-ccp.c (ccp_fold): Handle TRUTH_{AND,OR,XOR}_EXPR.
        * tree-ssa-ccp.c (ccp_fold): Handle TRUTH_{AND,OR,XOR}_EXPR.
        (def_to_undefined): Re-enable VARYING->UNDEFINED state transition
        (def_to_undefined): Re-enable VARYING->UNDEFINED state transition
        sanity check.
        sanity check.
        * tree-ssa-ccp.c (likely_value): Renamed from may_fold_p.  Now
        * tree-ssa-ccp.c (likely_value): Renamed from may_fold_p.  Now
        returns a latticevalue indicating the likely value for the
        returns a latticevalue indicating the likely value for the
        the RHS of the statement.
        the RHS of the statement.
        (evaluate_stmt): Update to use likely_value instead of may_fold_p.
        (evaluate_stmt): Update to use likely_value instead of may_fold_p.
        Statements with UNDEFINED operands produce an UNDEFINED result.
        Statements with UNDEFINED operands produce an UNDEFINED result.
        (set_lattice_value): Reenable VARYING->CONSTANT sanity check.
        (set_lattice_value): Reenable VARYING->CONSTANT sanity check.
2003-02-25  Andrew MacLeod  
2003-02-25  Andrew MacLeod  
        * tree-cfg.c (bsi_init): Handle BIND_EXPR nodes inside a basic block.
        * tree-cfg.c (bsi_init): Handle BIND_EXPR nodes inside a basic block.
        (bsi_next_in_bb): Likewise.
        (bsi_next_in_bb): Likewise.
2003-02-25  Diego Novillo  
2003-02-25  Diego Novillo  
        * tree-cfg.c (parent_array): Remove.  Update all users.
        * tree-cfg.c (parent_array): Remove.  Update all users.
        (struct cfg_stats_d): Add field 'num_failed_bind_expr_merges'.
        (struct cfg_stats_d): Add field 'num_failed_bind_expr_merges'.
        (NEXT_BLOCK_LINK): Define.
        (NEXT_BLOCK_LINK): Define.
        (build_tree_cfg): Call alloc_aux_for_blocks instead of
        (build_tree_cfg): Call alloc_aux_for_blocks instead of
        create_block_annotations.
        create_block_annotations.
        (make_blocks): Rewrite to support basic blocks that can span whole
        (make_blocks): Rewrite to support basic blocks that can span whole
        BIND_EXPR bodies and put control statements at the end of blocks.
        BIND_EXPR bodies and put control statements at the end of blocks.
        Add arguments 'next_block_link' and 'bb'.  Replace 'parent_block'
        Add arguments 'next_block_link' and 'bb'.  Replace 'parent_block'
        with 'parent_stmt'.  Update all users.
        with 'parent_stmt'.  Update all users.
        (make_loop_expr_blocks): Replace argument 'parent_block' with 'entry'.
        (make_loop_expr_blocks): Replace argument 'parent_block' with 'entry'.
        Add argument 'next_block_link'.  Update all users.
        Add argument 'next_block_link'.  Update all users.
        Don't create an empty latch block.
        Don't create an empty latch block.
        (make_cond_expr_blocks): Add argument 'next_block_link'.  Update
        (make_cond_expr_blocks): Add argument 'next_block_link'.  Update
        all users.
        all users.
        (make_switch_expr_blocks): Likewise.
        (make_switch_expr_blocks): Likewise.
        (make_bind_expr_blocks): Replace 'parent_block' with 'parent_stmt'.
        (make_bind_expr_blocks): Replace 'parent_block' with 'parent_stmt'.
        Add argument 'next_block_link' and 'entry'.
        Add argument 'next_block_link' and 'entry'.
        Don't create a new block for the BIND_EXPR node.  Extend the
        Don't create a new block for the BIND_EXPR node.  Extend the
        existing block.
        existing block.
        (add_stmt_to_bb): New function.
        (add_stmt_to_bb): New function.
        (create_bb): Remove argument 'parent_block'.  Update all users.
        (create_bb): Remove argument 'parent_block'.  Update all users.
        (create_block_annotations): Remove.  Update all users.
        (create_block_annotations): Remove.  Update all users.
        (make_edges): Don't handle BIND_EXPR nodes.
        (make_edges): Don't handle BIND_EXPR nodes.
        (make_ctrl_stmt_edges): Don't create an extra edge to the body of
        (make_ctrl_stmt_edges): Don't create an extra edge to the body of
        the switch.
        the switch.
        (make_loop_expr_edges): Only create an edge to the body of the
        (make_loop_expr_edges): Only create an edge to the body of the
        loop.
        loop.
        (remove_unreachable_block): Add more documentation for the special
        (remove_unreachable_block): Add more documentation for the special
        case where a control statement entry is unreachable but its body
        case where a control statement entry is unreachable but its body
        isn't.
        isn't.
        Remove the basic block annotation from the head and end containers
        Remove the basic block annotation from the head and end containers
        in the block.
        in the block.
        (disconnect_unreachable_case_labels): Don't keep the edge that goes
        (disconnect_unreachable_case_labels): Don't keep the edge that goes
        to the BIND_EXPR at the start of the switch body.
        to the BIND_EXPR at the start of the switch body.
        (dump_tree_bb): Call is_latch_block_for.
        (dump_tree_bb): Call is_latch_block_for.
        (dump_cfg_stats): Show stats about basic blocks that could not span
        (dump_cfg_stats): Show stats about basic blocks that could not span
        beyond the end of a BIND_EXPR body.
        beyond the end of a BIND_EXPR body.
        (successor_block): Use NEXT_BLOCK_LINK if the block is the last
        (successor_block): Use NEXT_BLOCK_LINK if the block is the last
        inside a control structure.
        inside a control structure.
        (is_ctrl_stmt): Update documentation.
        (is_ctrl_stmt): Update documentation.
        (stmt_starts_bb_p): Add new argument 'prev_t'.  Update all users.
        (stmt_starts_bb_p): Add new argument 'prev_t'.  Update all users.
        Only labels may start a new basic block.
        Only labels may start a new basic block.
        (stmt_ends_bb_p): Add LOOP_EXPR, TRY_FINALLY_EXPR and
        (stmt_ends_bb_p): Add LOOP_EXPR, TRY_FINALLY_EXPR and
        TRY_CATCH_EXPR to the list.
        TRY_CATCH_EXPR to the list.
        (latch_block): Remove.
        (latch_block): Remove.
        (is_latch_block_for): New function.
        (is_latch_block_for): New function.
        (set_bb_for_stmt): Reformat some code.
        (set_bb_for_stmt): Reformat some code.
        * tree-flow-inline.h (set_parent_block): Remove.  Update all users.
        * tree-flow-inline.h (set_parent_block): Remove.  Update all users.
        (parent_stmt): New function.
        (parent_stmt): New function.
        (parent_block): Call it.
        (parent_block): Call it.
        * tree-flow.h (struct stmt_ann_d): Add field 'parent_stmt'.
        * tree-flow.h (struct stmt_ann_d): Add field 'parent_stmt'.
        (struct bb_ann_d): Remove block parent_block.
        (struct bb_ann_d): Remove block parent_block.
        * tree-pretty-print.c (dump_generic_node): Don't handle empty latch
        * tree-pretty-print.c (dump_generic_node): Don't handle empty latch
        nodes.
        nodes.
        * tree-ssa-ccp.c (def_to_undefined): Temporarily disable check for
        * tree-ssa-ccp.c (def_to_undefined): Temporarily disable check for
        VARYING->UNDEFINED transitions.
        VARYING->UNDEFINED transitions.
        (set_lattice_value): Likewise for VARYING->CONSTANT transitions.
        (set_lattice_value): Likewise for VARYING->CONSTANT transitions.
        * tree-ssa-dce.c (mark_necessary): Use parent_stmt() to traverse
        * tree-ssa-dce.c (mark_necessary): Use parent_stmt() to traverse
        all the control statements that contain the current
        all the control statements that contain the current
        statement.
        statement.
        (makr_control_parent_necessary): Remove.  Update all users.
        (makr_control_parent_necessary): Remove.  Update all users.
        (stmt_useful_p): Add BIND_EXPR to the list of useful
        (stmt_useful_p): Add BIND_EXPR to the list of useful
        statements.
        statements.
        (process_worklist): Check that the statement is
        (process_worklist): Check that the statement is
        associated to a basic block.
        associated to a basic block.
        (remove_dead_stmt): Don't assume that the block has a
        (remove_dead_stmt): Don't assume that the block has a
        postdominator.
        postdominator.
2002-02-20  Daniel Berlin  
2002-02-20  Daniel Berlin  
        * tree-alias-ander.c: Store cached ptsets in the typevar, not
        * tree-alias-ander.c: Store cached ptsets in the typevar, not
        a seperate hash table.
        a seperate hash table.
        (ptset_map): Removed;
        (ptset_map): Removed;
        (ptset_map_eq): Ditto.
        (ptset_map_eq): Ditto.
        (ptset_map_hash): Ditto.
        (ptset_map_hash): Ditto.
        (andersen_init): Remove ptset_map.
        (andersen_init): Remove ptset_map.
        (andersen_cleanup): Ditto.
        (andersen_cleanup): Ditto.
        (andersen_add_var): Ditto.
        (andersen_add_var): Ditto.
        (andersen_add_var_asm): Ditto.
        (andersen_add_var_asm): Ditto.
        (andersen_may_alias): Ditto.
        (andersen_may_alias): Ditto.
        * tree-alias-common.c: Store typevars for DECL nodes in the tree_decl
        * tree-alias-common.c: Store typevars for DECL nodes in the tree_decl
        structure.
        structure.
        (get_alias_var_decl): Use DECL_PTA_TYPEVAR for DECL's.
        (get_alias_var_decl): Use DECL_PTA_TYPEVAR for DECL's.
        (create_alias_var): Ditto.
        (create_alias_var): Ditto.
        (find_func_aliases): CONST functions don't affect aliasing either.
        (find_func_aliases): CONST functions don't affect aliasing either.
        (ptr_may_alias_var): Don't call get_base_symbol.
        (ptr_may_alias_var): Don't call get_base_symbol.
        Remove decl_function_context, use DECL_CONTEXT instead.
        Remove decl_function_context, use DECL_CONTEXT instead.
        For DECL's, use DECL_PTA_TYPEVAR.
        For DECL's, use DECL_PTA_TYPEVAR.
        * tree-alias-type.c (struct alias_typevar_aterm): Add ptset member.
        * tree-alias-type.c (struct alias_typevar_aterm): Add ptset member.
        (ALIAS_TVAR_PTSET): New macro.
        (ALIAS_TVAR_PTSET): New macro.
        * tree.h (DECL_PTA_TYPEVAR): New macro.
        * tree.h (DECL_PTA_TYPEVAR): New macro.
        (struct tree_decl): Add typevar member.
        (struct tree_decl): Add typevar member.
2003-02-20  Jeff Law  
2003-02-20  Jeff Law  
        * c-simplify.c (simplify_decl_stmt): Call set_vla_decl on the
        * c-simplify.c (simplify_decl_stmt): Call set_vla_decl on the
        temporary holding the size and unit size for a VLA.  Minor
        temporary holding the size and unit size for a VLA.  Minor
        formatting fixes.
        formatting fixes.
        * ssa.c: Revert caching of immediate dominators change made on
        * ssa.c: Revert caching of immediate dominators change made on
        Jan 28, 2003.
        Jan 28, 2003.
        * tree-dfa.c: Fix comment.
        * tree-dfa.c: Fix comment.
2003-02-20  Jeff Law  
2003-02-20  Jeff Law  
        * tree-cfg.c (remove_bb): Update PHI nodes as edges are removed.
        * tree-cfg.c (remove_bb): Update PHI nodes as edges are removed.
        (cleanup_cond_expr_graph): Likewise.
        (cleanup_cond_expr_graph): Likewise.
        (cleanup_switch_expr_graph): Likewise.
        (cleanup_switch_expr_graph): Likewise.
        (disconnect_unreachable_case_labels): Likewise.
        (disconnect_unreachable_case_labels): Likewise.
        * tree-ssa-dce.c (mark_control_parent_necessary): Be much more
        * tree-ssa-dce.c (mark_control_parent_necessary): Be much more
        selective about what statements in the control parents are marked
        selective about what statements in the control parents are marked
        as necessary.
        as necessary.
        * tree-dfa.c (INDIRECT_REFs and ADDRESSABLE_VARs varrays): Replace
        * tree-dfa.c (INDIRECT_REFs and ADDRESSABLE_VARs varrays): Replace
        with a single ALIASED_OBJECTs set of varrays.
        with a single ALIASED_OBJECTs set of varrays.
        (dump_dfa_stats): Corresponding changes.
        (dump_dfa_stats): Corresponding changes.
        (compute_may_aliases, dump_alias_info): Likewise.
        (compute_may_aliases, dump_alias_info): Likewise.
        (compute_alias_sets): Likesise.  Update comments.    Register
        (compute_alias_sets): Likesise.  Update comments.    Register
        alias sets for all potentially aliased objects which are stored.
        alias sets for all potentially aliased objects which are stored.
        Check each potentially aliased object with the registered alias
        Check each potentially aliased object with the registered alias
        sets.
        sets.
        (register_alias_set): If DEREF aliases a single registered _DECL,
        (register_alias_set): If DEREF aliases a single registered _DECL,
        then replace the _DECL's entry with DEREF.
        then replace the _DECL's entry with DEREF.
        (find_alias_for): Update comments.  Do not stop the search when
        (find_alias_for): Update comments.  Do not stop the search when
        an alias is found.  There may be multiple entries with conflicting
        an alias is found.  There may be multiple entries with conflicting
        alias sets.
        alias sets.
        (struct walk_state): New structure for statement walker callbacks.
        (struct walk_state): New structure for statement walker callbacks.
        (find_vars_r): Add logic to track loads and stores of potentially
        (find_vars_r): Add logic to track loads and stores of potentially
        aliased objects separately.  Various changes related to
        aliased objects separately.  Various changes related to
        using a single set of varrays for all aliased objects.
        using a single set of varrays for all aliased objects.
        (add_referenced_var): Record in the var's annotation if the
        (add_referenced_var): Record in the var's annotation if the
        var is read or written.  Various changes related to using a
        var is read or written.  Various changes related to using a
        single set of varrays for all the aliased objects.
        single set of varrays for all the aliased objects.
        (add_stmt_operand): Only set may_point_to_global_mem for INDIRECT_REFs.
        (add_stmt_operand): Only set may_point_to_global_mem for INDIRECT_REFs.
        * tree-flow.h (struct var_ann_d): Add new fields indicating if
        * tree-flow.h (struct var_ann_d): Add new fields indicating if
        the var is loaded or stored.  Explicitly note unused bitfield
        the var is loaded or stored.  Explicitly note unused bitfield
        entries.
        entries.
2003-02-19  Jeff Law  
2003-02-19  Jeff Law  
        * fold-const.c (fold_negate_const): New function.  Broken out of
        * fold-const.c (fold_negate_const): New function.  Broken out of
        the generic fold code.
        the generic fold code.
        (fold_abs_const, fold_relational_const): Likewise.
        (fold_abs_const, fold_relational_const): Likewise.
        (fold_relational_hi_lo): Likewise.
        (fold_relational_hi_lo): Likewise.
        (nondestructive_fold_unary, nondestructive_fold_binary): Likewise.
        (nondestructive_fold_unary, nondestructive_fold_binary): Likewise.
        (fold): Use fold_negate_const, fold_abs_const, fold_relational_const,
        (fold): Use fold_negate_const, fold_abs_const, fold_relational_const,
        and fold_relational_hi_lo.
        and fold_relational_hi_lo.
        * tree.h (nondestructive_fold_unary): Declare.
        * tree.h (nondestructive_fold_unary): Declare.
        (nondestructive_fold_binary): Declare.
        (nondestructive_fold_binary): Declare.
        * tree-ssa-ccp.c (ccp_fold): New function.
        * tree-ssa-ccp.c (ccp_fold): New function.
        (add_control_edge): Fix trivial formatting bug.
        (add_control_edge): Fix trivial formatting bug.
        (evaluate_stmt): Rework to use ccp_fold instead of copying
        (evaluate_stmt): Rework to use ccp_fold instead of copying
        statements.
        statements.
2003-02-18  Jeff Law  
2003-02-18  Jeff Law  
        * tree-ssa-ccp.c (visit_assignment): For simple copies, copy the
        * tree-ssa-ccp.c (visit_assignment): For simple copies, copy the
        lattice values.
        lattice values.
        (defs_to_undefined): Add missing abort.
        (defs_to_undefined): Add missing abort.
        (replace_uses_in): Do not do a replacement if it would create
        (replace_uses_in): Do not do a replacement if it would create
        non GIMPLE trees.
        non GIMPLE trees.
2002-02-14  Jeff Law  
2002-02-14  Jeff Law  
        * tree-ssa-ccp.c (def_to_undefined): Improve sanity checking code
        * tree-ssa-ccp.c (def_to_undefined): Improve sanity checking code
        so that it can detect invalid VARYING->UNDEFINED transitions.
        so that it can detect invalid VARYING->UNDEFINED transitions.
        (set_lattice_value): Improve sanity checking code so that it
        (set_lattice_value): Improve sanity checking code so that it
        does not trip on valid VARYING->CONSTANT transitions.
        does not trip on valid VARYING->CONSTANT transitions.
        * tree-flow.h (struct stmt_ann_d): Add new field in_ccp_worklist.
        * tree-flow.h (struct stmt_ann_d): Add new field in_ccp_worklist.
        * tree-ssa-ccp.c (simulate_stmt): Renamed from simulate_def_use_edges.
        * tree-ssa-ccp.c (simulate_stmt): Renamed from simulate_def_use_edges.
        (add_var_to_ssa_edges_worklist): New function.  Only add statements
        (add_var_to_ssa_edges_worklist): New function.  Only add statements
        to the ssa_edges worklist if they are not already on the worklist.
        to the ssa_edges worklist if they are not already on the worklist.
        (def_to_undefined, def_to_varying, set_lattice_value)
        (def_to_undefined, def_to_varying, set_lattice_value)
        (tree_ssa_ccp): Only reevaluate the statement if in_ccp_worklist
        (tree_ssa_ccp): Only reevaluate the statement if in_ccp_worklist
        is set for the element popped off the ssa_edges worklist.
        is set for the element popped off the ssa_edges worklist.
        (simulate_statement): Simplify now that ssa_edges is a worklist
        (simulate_statement): Simplify now that ssa_edges is a worklist
        of statements to reevaluate rather than a worklist of defs
        of statements to reevaluate rather than a worklist of defs
        that need their immediate uses reevaluated.
        that need their immediate uses reevaluated.
        (visit_stmt): Clear in_ccp_worklist.
        (visit_stmt): Clear in_ccp_worklist.
        * tree-ssa-ccp.c (def_to_undefined): Directly store the new
        * tree-ssa-ccp.c (def_to_undefined): Directly store the new
        lattice values rather than call set_value.
        lattice values rather than call set_value.
        (def_to_varying): Likewise.
        (def_to_varying): Likewise.
        (set_lattice_value): Likewise.
        (set_lattice_value): Likewise.
        * tree-ssa-ccp.c (def_to_undefined): Add some state transition
        * tree-ssa-ccp.c (def_to_undefined): Add some state transition
        sanity checking.  Avoid calling set_value if nothing changed.
        sanity checking.  Avoid calling set_value if nothing changed.
        (def_to_varying): Avoid calling set_value if nothing changed.
        (def_to_varying): Avoid calling set_value if nothing changed.
        (set_lattice_value): Add some state transition sanity checking
        (set_lattice_value): Add some state transition sanity checking
        for transitions into the CONSTANT state.  If the object's
        for transitions into the CONSTANT state.  If the object's
        "constant" value has changed to a new constant value, then the
        "constant" value has changed to a new constant value, then the
        object has a VARYING value.
        object has a VARYING value.
        * tree-ssa-ccp.c (tree_ssa_ccp): Work through the entire
        * tree-ssa-ccp.c (tree_ssa_ccp): Work through the entire
        ssa_edges worklist each iteration through the main loop.
        ssa_edges worklist each iteration through the main loop.
2002-02-13  Jeff Law  
2002-02-13  Jeff Law  
        * tree-ssa-ccp.c: Fix comment formatting glitches.
        * tree-ssa-ccp.c: Fix comment formatting glitches.
        * tree-ssa-ccp.c (may_fold_p): New function.  Returns nonzero if
        * tree-ssa-ccp.c (may_fold_p): New function.  Returns nonzero if
        the given statement may fold after replacement of operands with
        the given statement may fold after replacement of operands with
        constants.
        constants.
        (evaluate_stmt): Only create a copy of the statement if there is
        (evaluate_stmt): Only create a copy of the statement if there is
        a reasonable chance the statement will fold.
        a reasonable chance the statement will fold.
2002-02-13  Diego Novillo  
2002-02-13  Diego Novillo  
        * Makefile.in (OBJS): Add tree-ssa-pre.o.
        * Makefile.in (OBJS): Add tree-ssa-pre.o.
2003-02-13  Daniel Berlin  
2003-02-13  Daniel Berlin  
        * tree-dfa.c (create_stmt_ann): Do stmt part of common annotation.
        * tree-dfa.c (create_stmt_ann): Do stmt part of common annotation.
        * tree-flow-inline.h (tree_stmt): Return statement tree is part of.
        * tree-flow-inline.h (tree_stmt): Return statement tree is part of.
        * tree-flow.h (struct bb_ann_d): Add ephi_nodes.
        * tree-flow.h (struct bb_ann_d): Add ephi_nodes.
        * tree-optimize.c (optimize_tree): Activate SSAPRE again.
        * tree-optimize.c (optimize_tree): Activate SSAPRE again.
        * tree-pretty-print.c (debug_generic_expr): New function.
        * tree-pretty-print.c (debug_generic_expr): New function.
        (debug_generic_stmt): Ditto.
        (debug_generic_stmt): Ditto.
        (dump_generic_node): Pretty print EUSE's, EREF's,  and EPHI's.
        (dump_generic_node): Pretty print EUSE's, EREF's,  and EPHI's.
        * tree-ssa-pre.c: Rewrite almost entirely. Now performs more
        * tree-ssa-pre.c: Rewrite almost entirely. Now performs more
        strength reduction, EPHI minimization, and keeps SSA up to date.
        strength reduction, EPHI minimization, and keeps SSA up to date.
        * tree.c (tree_size): Handle EUSE, EPHI, EREF nodes.
        * tree.c (tree_size): Handle EUSE, EPHI, EREF nodes.
        (tree_node_structure): Ditto.
        (tree_node_structure): Ditto.
        (ephi_node_elt_check_failed): New function.
        (ephi_node_elt_check_failed): New function.
        * tree.def: Add EUSE_NODE, ELEFT_NODE, EKILL_NODE, EPHI_NODE,
        * tree.def: Add EUSE_NODE, ELEFT_NODE, EKILL_NODE, EPHI_NODE,
        EEXIT_NODE.
        EEXIT_NODE.
        * tree.h (EREF_NODE_CHECK): New.
        * tree.h (EREF_NODE_CHECK): New.
        (EPHI_NODE_ELT_CHECK): New.
        (EPHI_NODE_ELT_CHECK): New.
        (struct tree_eref_common): New.
        (struct tree_eref_common): New.
        (struct tree_euse_node): New.
        (struct tree_euse_node): New.
        (struct tree_ephi_node): New.
        (struct tree_ephi_node): New.
        (union tree_node): Add euse, eref, ephi members.
        (union tree_node): Add euse, eref, ephi members.
        (enum tree_node_structure): Add TS_EPHI_NODE, TS_EUSE_NODE,
        (enum tree_node_structure): Add TS_EPHI_NODE, TS_EUSE_NODE,
        TS_EREF_NODE.
        TS_EREF_NODE.
2003-02-13  Daniel Berlin 
2003-02-13  Daniel Berlin 
            Andreas Jaeger  
            Andreas Jaeger  
        * tree-flow.h: Add some garbage collector marks.
        * tree-flow.h: Add some garbage collector marks.
2003-02-12  Jeff Law  
2003-02-12  Jeff Law  
        * Makefile.in (ssa.o): Depends on $(TREE_H) and tree-flow.h
        * Makefile.in (ssa.o): Depends on $(TREE_H) and tree-flow.h
        * ssa.c: Include tree.h and tree-flow.h.
        * ssa.c: Include tree.h and tree-flow.h.
        (compute_dominance_frontiers_1): Use the sparse bitmap
        (compute_dominance_frontiers_1): Use the sparse bitmap
        of dominator children from the basic block's annotation
        of dominator children from the basic block's annotation
        if it's available.  Otherwise build the sparse bitmap
        if it's available.  Otherwise build the sparse bitmap
        using the result of get_dominated_by.
        using the result of get_dominated_by.
        * tree-ssa.c (rewrite_into_ssa): Reorder things slightly so
        * tree-ssa.c (rewrite_into_ssa): Reorder things slightly so
        that we can use the cached dominator children computed
        that we can use the cached dominator children computed
        by mark_def_sites in compute_dominance_frontiers.
        by mark_def_sites in compute_dominance_frontiers.
2003-02-12  Andreas Jaeger  
2003-02-12  Andreas Jaeger  
        * tree-dfa.c (dump_alias_info): Cast variable of size_t properly.
        * tree-dfa.c (dump_alias_info): Cast variable of size_t properly.
2003-02-12  Daniel Berlin  
2003-02-12  Daniel Berlin  
        * tree-dfa.c (find_may_aliases_for): Remove
        * tree-dfa.c (find_may_aliases_for): Remove
        (compute_may_aliases): Always call compute_alias_sets.
        (compute_may_aliases): Always call compute_alias_sets.
2003-02-10  Jeff Law 
2003-02-10  Jeff Law 
        * ssa.c (compute_dominance_frontiers_1): Use a sparse bitmap
        * ssa.c (compute_dominance_frontiers_1): Use a sparse bitmap
        for the frontiers.
        for the frontiers.
        (compute_dominance_frontiers): Corresponding changes.
        (compute_dominance_frontiers): Corresponding changes.
        (convert_to_ssa): Similarly.  Convert the sparse bitmap to
        (convert_to_ssa): Similarly.  Convert the sparse bitmap to
        a simple bitmap to avoid lots of collateral damage.
        a simple bitmap to avoid lots of collateral damage.
        * ssa.h (compute_dominance_frontiers): Update prototype.
        * ssa.h (compute_dominance_frontiers): Update prototype.
        * tree-ssa.c (added, in_work): Kill, no longer needed.
        * tree-ssa.c (added, in_work): Kill, no longer needed.
        (struct def_blocks_d): Add new bitmap (livein_blocks).
        (struct def_blocks_d): Add new bitmap (livein_blocks).
        (rewrite_into_ssa): Make dominance frontiers be a sparse
        (rewrite_into_ssa): Make dominance frontiers be a sparse
        bitmap instead of a simple bitmap.  Rename the "nonlocals"
        bitmap instead of a simple bitmap.  Rename the "nonlocals"
        simple bitmap to "globals".  Pass it into mark_def_sites.
        simple bitmap to "globals".  Pass it into mark_def_sites.
        (compute_global_livein): New function.
        (compute_global_livein): New function.
        (mark_def_sites): Also keep track of variables which are
        (mark_def_sites): Also keep track of variables which are
        used before they are set.  Allow caller to allocate and
        used before they are set.  Allow caller to allocate and
        pass in a simple bitmap for global variables.  Process
        pass in a simple bitmap for global variables.  Process
        items defined in the statement last.
        items defined in the statement last.
        (set_def_block): Also allocate bitmap for globals.
        (set_def_block): Also allocate bitmap for globals.
        (set_livein_block): New function.
        (set_livein_block): New function.
        (def_blocks_free): Free def_blocks correctly.  Also free
        (def_blocks_free): Free def_blocks correctly.  Also free
        livein_blocks.
        livein_blocks.
        (debug_def_blocks_r): Also dump the livein_blocks.
        (debug_def_blocks_r): Also dump the livein_blocks.
        (insert_phi_nodes): Simplify now that we don't need the
        (insert_phi_nodes): Simplify now that we don't need the
        added and in_work varrays.  Accept DFS as a sparse bitmap
        added and in_work varrays.  Accept DFS as a sparse bitmap
        instead of a simple bitmap.
        instead of a simple bitmap.
        (insert_phi_nodes_for): Rework significantly.  Pre-compute all
        (insert_phi_nodes_for): Rework significantly.  Pre-compute all
        the insertion points for semi-pruned form.  While computing those
        the insertion points for semi-pruned form.  While computing those
        insertion points keep track of how many phi vector entries
        insertion points keep track of how many phi vector entries
        would be needed at those insertion points.  When the number of
        would be needed at those insertion points.  When the number of
        entries gets large (32), compute global life information and
        entries gets large (32), compute global life information and
        use that to further pruned the number of PHI insertion points
        use that to further pruned the number of PHI insertion points
        necessary.
        necessary.
2003-02-09  Diego Novillo  
2003-02-09  Diego Novillo  
        * tree-dfa.c (find_vars_r): Assume that the RHS of an INDIRECT_REF,
        * tree-dfa.c (find_vars_r): Assume that the RHS of an INDIRECT_REF,
        that is also an SSA variable, is a VAR_DECL.
        that is also an SSA variable, is a VAR_DECL.
        (get_virtual_var): Handle INDIRECT_REF nodes that are not valid SSA
        (get_virtual_var): Handle INDIRECT_REF nodes that are not valid SSA
        variables.
        variables.
        * tree-ssa-dce.c (stmt_useful_p): Revert kludge in previous commit.
        * tree-ssa-dce.c (stmt_useful_p): Revert kludge in previous commit.
        VA_ARG_EXPR nodes are not inherently live.
        VA_ARG_EXPR nodes are not inherently live.
        * tree-ssa.c (mark_def_sites): Don't process the LHS of assignments
        * tree-ssa.c (mark_def_sites): Don't process the LHS of assignments
        twice.
        twice.
        The operand of a virtual definition constitutes a use of the
        The operand of a virtual definition constitutes a use of the
        variable which should be considered a non-local if it had not been
        variable which should be considered a non-local if it had not been
        killed inside the block.
        killed inside the block.
        * tree.h (SSA_VAR_P): Only return true for INDIRECT_REFs if their
        * tree.h (SSA_VAR_P): Only return true for INDIRECT_REFs if their
        operand is a _DECL node.
        operand is a _DECL node.
2003-02-09  Diego Novillo  
2003-02-09  Diego Novillo  
        * config/rs6000/t-rs6000 (simplify-rtx.o): Compile with -Wno-error.
        * config/rs6000/t-rs6000 (simplify-rtx.o): Compile with -Wno-error.
2003-02-08  Diego Novillo  
2003-02-08  Diego Novillo  
        * toplev.c (parse_options_and_default_flags): Enable SSA DCE by
        * toplev.c (parse_options_and_default_flags): Enable SSA DCE by
        default.
        default.
        * tree-dfa.c (get_expr_operands): Recurse into LHS of an ARRAY_REF
        * tree-dfa.c (get_expr_operands): Recurse into LHS of an ARRAY_REF
        when it's not a regular variable.  Always recurse into the RHS.
        when it's not a regular variable.  Always recurse into the RHS.
        (add_stmt_operand): Set may_point_to_global_mem for pointers that
        (add_stmt_operand): Set may_point_to_global_mem for pointers that
        are assigned expressions that may reference global memory.  Also
        are assigned expressions that may reference global memory.  Also
        set its dereference variable to be an alias of global memory.
        set its dereference variable to be an alias of global memory.
        (dump_variable): Show may_point_to_global_mem flag.
        (dump_variable): Show may_point_to_global_mem flag.
        (compute_alias_sets): Also dump all referenced variables when
        (compute_alias_sets): Also dump all referenced variables when
        dumping alias information.
        dumping alias information.
        (add_may_alias): Check for global memory aliasing.
        (add_may_alias): Check for global memory aliasing.
        (may_access_global_mem_p): Rename from may_access_global_mem.
        (may_access_global_mem_p): Rename from may_access_global_mem.
        Return true if the expression is a variable that may point to or
        Return true if the expression is a variable that may point to or
        alias global memory.
        alias global memory.
        (add_referenced_var): Pointer arguments and global pointers may
        (add_referenced_var): Pointer arguments and global pointers may
        point to global memory.
        point to global memory.
        (set_may_alias_global_mem): Move ...
        (set_may_alias_global_mem): Move ...
        * tree-flow-inline.h (set_may_alias_global_mem): ... here.
        * tree-flow-inline.h (set_may_alias_global_mem): ... here.
        (set_may_point_to_global_mem): New function.
        (set_may_point_to_global_mem): New function.
        (may_point_to_global_mem_p): New function.
        (may_point_to_global_mem_p): New function.
        * tree-ssa-dce.c (stmt_useful_p): VA_ARG_EXPRs are inherently live.
        * tree-ssa-dce.c (stmt_useful_p): VA_ARG_EXPRs are inherently live.
        * tree-ssa.c (rewrite_into_ssa): Don't call dump_referenced_vars.
        * tree-ssa.c (rewrite_into_ssa): Don't call dump_referenced_vars.
2003-02-06  Diego Novillo  
2003-02-06  Diego Novillo  
        * tree-dfa.c (struct alias_tags, alias_tags, num_alias_tags):
        * tree-dfa.c (struct alias_tags, alias_tags, num_alias_tags):
        Remove.  Update all users.
        Remove.  Update all users.
        (struct alias_set_d): New.
        (struct alias_set_d): New.
        (alias_sets): New file local variable.
        (alias_sets): New file local variable.
        (compute_alias_sets): New function.
        (compute_alias_sets): New function.
        (compute_may_aliases): Call it when not doing points-to analysis.
        (compute_may_aliases): Call it when not doing points-to analysis.
        (register_alias_set): New function.
        (register_alias_set): New function.
        (find_alias_for): New function.
        (find_alias_for): New function.
        (may_alias_p): Declare static.
        (may_alias_p): Declare static.
        Don't assume that VAR may not be aliased if it's a non-addressable
        Don't assume that VAR may not be aliased if it's a non-addressable
        _DECL.
        _DECL.
        If VAR and PTR are aggregate types, check if they can have a field
        If VAR and PTR are aggregate types, check if they can have a field
        that points to the other one.
        that points to the other one.
        (find_may_aliases_for): Move handling of global memory aliasing ...
        (find_may_aliases_for): Move handling of global memory aliasing ...
        (add_may_alias): ... here.
        (add_may_alias): ... here.
        Also accept the base symbols for the variable and its alias.
        Also accept the base symbols for the variable and its alias.
        (register_new_alias): Remove.  Update all users.
        (register_new_alias): Remove.  Update all users.
        (find_alias_tag): Remove.  Update all users.
        (find_alias_tag): Remove.  Update all users.
        (find_vars_r): Update VAR after re-writing *TP when sharing
        (find_vars_r): Update VAR after re-writing *TP when sharing
        INDIRECT_REF nodes.
        INDIRECT_REF nodes.
        * tree-flow.h (may_alias_p): Remove declaration.
        * tree-flow.h (may_alias_p): Remove declaration.
        * tree-ssa.c (rewrite_into_ssa): Include referenced variables in
        * tree-ssa.c (rewrite_into_ssa): Include referenced variables in
        default debug dumps.
        default debug dumps.
        Support for VLAs.
        Support for VLAs.
        * tree-dfa.c (find_vla_decls): New function.
        * tree-dfa.c (find_vla_decls): New function.
        (compute_may_aliases): Call it.
        (compute_may_aliases): Call it.
        (find_vla_decls_r): New function.
        (find_vla_decls_r): New function.
        (dump_variable): Show whether the variable is used in a VLA
        (dump_variable): Show whether the variable is used in a VLA
        declaration.
        declaration.
        * tree-flow-inline.h (is_vla_decl): New function.
        * tree-flow-inline.h (is_vla_decl): New function.
        (set_vla_decl): New function.
        (set_vla_decl): New function.
        * tree-flow.h (struct var_ann_d): Add bitfield 'is_vla_decl'.
        * tree-flow.h (struct var_ann_d): Add bitfield 'is_vla_decl'.
        * tree-ssa-dce.c (need_to_preserve_store): Return true if SYM is
        * tree-ssa-dce.c (need_to_preserve_store): Return true if SYM is
        used inside a VLA declaration.
        used inside a VLA declaration.
2003-02-05  Andrew MacLeod  
2003-02-05  Andrew MacLeod  
        * Makefile.in : Include new file tree-iterator.h in tree-simple.h
        * Makefile.in : Include new file tree-iterator.h in tree-simple.h
        * gimplify.c (simplify_cleanup_point_expr): Use tsi_ rather than gsi_.
        * gimplify.c (simplify_cleanup_point_expr): Use tsi_ rather than gsi_.
        * tree-cfg.c (make_blocks, remove_bb): Use tsi_ not gsi_ routines.
        * tree-cfg.c (make_blocks, remove_bb): Use tsi_ not gsi_ routines.
        (bsi_remove): Renamed from gsi_remove, use bsi_ routines.
        (bsi_remove): Renamed from gsi_remove, use bsi_ routines.
        (successor_block, first_exec_stmt): Use tsi_ not gsi_ routines.
        (successor_block, first_exec_stmt): Use tsi_ not gsi_ routines.
        (first_stmt, last_stmt, last_stmt_ptr): Use bsi_ not gsi_ routines.
        (first_stmt, last_stmt, last_stmt_ptr): Use bsi_ not gsi_ routines.
        (bsi_init): Split out from bsi_start.
        (bsi_init): Split out from bsi_start.
        (bsi_start): Renamed from gsi_start_bb, use bsi_ routines.
        (bsi_start): Renamed from gsi_start_bb, use bsi_ routines.
        (bsi_next_in_bb): Moved from tree-flow-inline.h and renamed from
        (bsi_next_in_bb): Moved from tree-flow-inline.h and renamed from
        gsi_step_in_bb. Also verify BB of new stmt.
        gsi_step_in_bb. Also verify BB of new stmt.
        * tree-dfa.c (compute_immediate_uses, dump_immediate_uses,
        * tree-dfa.c (compute_immediate_uses, dump_immediate_uses,
        collect_dfa_stats, compute_may_aliases): Use block_stmt_iterator.
        collect_dfa_stats, compute_may_aliases): Use block_stmt_iterator.
        * tree-flow-inline.h (gsi_step_in_bb): Moved to tree-cfg.c
        * tree-flow-inline.h (gsi_step_in_bb): Moved to tree-cfg.c
        (bsi_end_p): Renamed from gsi_end_bb_p.
        (bsi_end_p): Renamed from gsi_end_bb_p.
        (bsi_next): renamed from gsi_step_bb
        (bsi_next): renamed from gsi_step_bb
        (bsi_prev): New function.
        (bsi_prev): New function.
        (bsi_stmt_ptr): Block version of gsi_stmt_ptr.
        (bsi_stmt_ptr): Block version of gsi_stmt_ptr.
        (bsi_stmt): Block version of gsi_stmt.
        (bsi_stmt): Block version of gsi_stmt.
        (bsi_container): Block version of gsi_container.
        (bsi_container): Block version of gsi_container.
        * tree-flow.h (block_stmt_iterator): New iterator type.
        * tree-flow.h (block_stmt_iterator): New iterator type.
        * tree-iterator.h: New include file for tree_iterator.
        * tree-iterator.h: New include file for tree_iterator.
        * tree-simple.h : Include tree-iterator.h
        * tree-simple.h : Include tree-iterator.h
        (gimple_stmt_iterator, gsi_start, gsi_end_p, gsi_stmt_ptr,
        (gimple_stmt_iterator, gsi_start, gsi_end_p, gsi_stmt_ptr,
        gsi_stmt, gsi_container): Move to tree-iterator.h and rename to tsi_.
        gsi_stmt, gsi_container): Move to tree-iterator.h and rename to tsi_.
        (gsi_step): Move to tree-iterator.h and renamed to tsi_next.
        (gsi_step): Move to tree-iterator.h and renamed to tsi_next.
        * tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use block
        * tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use block
        iterators instead of gimple_stmt_iterator.
        iterators instead of gimple_stmt_iterator.
        * tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
        * tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
        remove_dead_stmts, remove_dead_stmt): Use block_stmt_iterator.
        remove_dead_stmts, remove_dead_stmt): Use block_stmt_iterator.
        * tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmts): Use
        * tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmts): Use
        block_stmt_iterator.
        block_stmt_iterator.
2003-02-04  Daniel Berlin  
2003-02-04  Daniel Berlin  
        * tree-alias-common.c (get_alias_var_decl): If it's a global var,
        * tree-alias-common.c (get_alias_var_decl): If it's a global var,
        make sure it doesn't get added to local_alias_vars.
        make sure it doesn't get added to local_alias_vars.
        (get_name): Return the right name for FUNCTION_DECL's.
        (get_name): Return the right name for FUNCTION_DECL's.
2003-02-04  Diego Novillo  
2003-02-04  Diego Novillo  
        * tree-dfa.c (add_stmt_operand): Do not add a VUSE for a pointer
        * tree-dfa.c (add_stmt_operand): Do not add a VUSE for a pointer
        when clobbering its associated INDIRECT_REF variable.
        when clobbering its associated INDIRECT_REF variable.
2003-02-04  Diego Novillo  
2003-02-04  Diego Novillo  
        * config/rs6000/t-rs6000 (jump.o, regmove.o, c-typeck.o, cfgrtl.o,
        * config/rs6000/t-rs6000 (jump.o, regmove.o, c-typeck.o, cfgrtl.o,
        combine.o, fold-const.o, ifcvt.o, reload1.o, rtlanal.o,
        combine.o, fold-const.o, ifcvt.o, reload1.o, rtlanal.o,
        cp/decl2.o, cp/pt.o, f/where.o, java/expr.o, objc/objc-act.o,
        cp/decl2.o, cp/pt.o, f/where.o, java/expr.o, objc/objc-act.o,
        rs6000.o, insn-emit.o): Compile with -Wno-error.
        rs6000.o, insn-emit.o): Compile with -Wno-error.
2003-02-03  Diego Novillo  
2003-02-03  Diego Novillo  
            Jeff Law  
            Jeff Law  
        * tree-cfg.c (make_blocks): Don't always start a new block with
        * tree-cfg.c (make_blocks): Don't always start a new block with
        COND_EXPR and SWITCH_EXPR statements.
        COND_EXPR and SWITCH_EXPR statements.
        Call stmt_ends_bb_p to determine if the current statement should be
        Call stmt_ends_bb_p to determine if the current statement should be
        the last in the block.
        the last in the block.
        (make_cond_expr_blocks): Second argument is now the entry block
        (make_cond_expr_blocks): Second argument is now the entry block
        to the conditional.
        to the conditional.
        (make_switch_expr_blocks): Second argument is now the entry block
        (make_switch_expr_blocks): Second argument is now the entry block
        to the switch.
        to the switch.
        (make_edges, make_ctrl_stmt_edges, make_loop_expr_edges,
        (make_edges, make_ctrl_stmt_edges, make_loop_expr_edges,
        cleanup_control_flow, cleanup_cond_expr_graph,
        cleanup_control_flow, cleanup_cond_expr_graph,
        cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
        cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
        find_taken_edge, successor_block, latch_block, is_latch_block,
        find_taken_edge, successor_block, latch_block, is_latch_block,
        switch_parent): Work with the last statement of the block, not the
        switch_parent): Work with the last statement of the block, not the
        first.
        first.
        (is_ctrl_altering_stmt): Pre-compute the code of the statement.
        (is_ctrl_altering_stmt): Pre-compute the code of the statement.
        (stmt_starts_bb_p): Declare file local.
        (stmt_starts_bb_p): Declare file local.
        Don't call is_ctrl_stmt.  Check if T is a LOOP_EXPR instead.
        Don't call is_ctrl_stmt.  Check if T is a LOOP_EXPR instead.
        (stmt_ends_bb_p): New function.
        (stmt_ends_bb_p): New function.
        * tree-flow.h (stmt_starts_bb_p): Remove declaration.
        * tree-flow.h (stmt_starts_bb_p): Remove declaration.
2003-02-03  Diego Novillo  
2003-02-03  Diego Novillo  
        * tree-dfa.c (find_vars_r): Share INDIRECT_REF nodes whose operand
        * tree-dfa.c (find_vars_r): Share INDIRECT_REF nodes whose operand
        is a VAR_DECL.
        is a VAR_DECL.
        (add_referenced_var): Add additional argument 'sym'.  Update all users.
        (add_referenced_var): Add additional argument 'sym'.  Update all users.
        Don't call get_base_symbol.
        Don't call get_base_symbol.
        (add_indirect_ref_var): Rename argument 'var' to 'ptr'.
        (add_indirect_ref_var): Rename argument 'var' to 'ptr'.
        (htab_hash_var): Remove.  Update all users to use htab_hash_pointer.
        (htab_hash_var): Remove.  Update all users to use htab_hash_pointer.
        (htab_var_eq): Remove.  Update all users to use htab_eq_pointer.
        (htab_var_eq): Remove.  Update all users to use htab_eq_pointer.
        * tree-flow-inline.h (var_ann): Don't retrieve the annotation of
        * tree-flow-inline.h (var_ann): Don't retrieve the annotation of
        the base pointer for INDIRECT_REF variables.
        the base pointer for INDIRECT_REF variables.
        (is_aliased): Remove.  Update all users.
        (is_aliased): Remove.  Update all users.
        (is_dereferenced): Remove.  Update all users.
        (is_dereferenced): Remove.  Update all users.
        (same_var_p): Remove.  Update all users to use pointer equality.
        (same_var_p): Remove.  Update all users to use pointer equality.
        * tree-simple.c (get_base_symbol): Convert tail recursion into
        * tree-simple.c (get_base_symbol): Convert tail recursion into
        iteration.
        iteration.
        * tree-ssa.c (rewrite_out_of_ssa): Add FIXME note about overlapping
        * tree-ssa.c (rewrite_out_of_ssa): Add FIXME note about overlapping
        live ranges for different versions of the same variable.
        live ranges for different versions of the same variable.
2003-02-03  Jeff Law  
2003-02-03  Jeff Law  
        * tree-dfa.c (add_referenced_var): Annotate each item in the
        * tree-dfa.c (add_referenced_var): Annotate each item in the
        REFERENCED_VARS varray with a unique id.
        REFERENCED_VARS varray with a unique id.
        * tree-flow.h (struct var_ann_d): Add new uid field.
        * tree-flow.h (struct var_ann_d): Add new uid field.
        * tree-ssa.c (mark_def_sites): Compute the set of variables
        * tree-ssa.c (mark_def_sites): Compute the set of variables
        live across basic blocks and return them in an sbitmap.
        live across basic blocks and return them in an sbitmap.
        (insert_phi_nodes): Use the set of nonlocal variables computed
        (insert_phi_nodes): Use the set of nonlocal variables computed
        by mark_def_sites to reduce the number of PHI nodes inserted.
        by mark_def_sites to reduce the number of PHI nodes inserted.
        (rewrite_into_ssa): Updated to deal with changes in
        (rewrite_into_ssa): Updated to deal with changes in
        insert_phi_nodes and mark_def_sites.  Free the sbitmap returned
        insert_phi_nodes and mark_def_sites.  Free the sbitmap returned
        by mark_def_sites.
        by mark_def_sites.
2003-02-03  Diego Novillo  
2003-02-03  Diego Novillo  
        * c-common.h (GOTO_DESTINATION): Remove.  Fix botched
        * c-common.h (GOTO_DESTINATION): Remove.  Fix botched
        merge.
        merge.
2003-02-03  Diego Novillo  
2003-02-03  Diego Novillo  
        Fix warnings to allow bootstrapping with -Werror.
        Fix warnings to allow bootstrapping with -Werror.
        * Makefile.in (c-semantics.o-warn): Add -Wno-error.
        * Makefile.in (c-semantics.o-warn): Add -Wno-error.
        (emit-rtl.o-warn): Likewise.
        (emit-rtl.o-warn): Likewise.
        (profile.o-warn): Likewise.
        (profile.o-warn): Likewise.
        (tree.o-warn): Likewise.
        (tree.o-warn): Likewise.
        (OBJS): Remove simple-break-elim.o and simple-goto-elim.o.
        (OBJS): Remove simple-break-elim.o and simple-goto-elim.o.
        * c-pretty-print.c (print_function_decl): Remove unused function.
        * c-pretty-print.c (print_function_decl): Remove unused function.
        * bitmap.c (bitmap_last_set_bit): Initialize variable 'word'.
        * bitmap.c (bitmap_last_set_bit): Initialize variable 'word'.
        * c-typeck.c (build_binary_op): Initialize variable 'type'.
        * c-typeck.c (build_binary_op): Initialize variable 'type'.
        * combine.c (combine_simplify_rtx): Initialize variable 'reversed'.
        * combine.c (combine_simplify_rtx): Initialize variable 'reversed'.
        (make_compound_operation): Initialize variable 'i'.
        (make_compound_operation): Initialize variable 'i'.
        * dwarf2out.c (dwarf2out_finish): Initialize variable 'context'.
        * dwarf2out.c (dwarf2out_finish): Initialize variable 'context'.
        * expr.c (store_constructor): Initialize variables 'lo', 'hi',
        * expr.c (store_constructor): Initialize variables 'lo', 'hi',
        'startb' and 'endb'.
        'startb' and 'endb'.
        (expand_expr): Initialize variable 'op0'.
        (expand_expr): Initialize variable 'op0'.
        * fold-const.c (fold): Initialize variable 'tem'.
        * fold-const.c (fold): Initialize variable 'tem'.
        * profile.c (branch_prob): Initialize variable 'prev_file_name'.
        * profile.c (branch_prob): Initialize variable 'prev_file_name'.
        * reload.c (find_equiv_reg): Initialize variables 'valtry and
        * reload.c (find_equiv_reg): Initialize variables 'valtry and
        'valueno'.
        'valueno'.
        * rtlanal.c (get_jump_table_offset): Initialize variable 'set'.
        * rtlanal.c (get_jump_table_offset): Initialize variable 'set'.
        * ssa-ccp.c (ssa_const_prop): Fix sign mismatch warning.
        * ssa-ccp.c (ssa_const_prop): Fix sign mismatch warning.
        * varasm.c (output_constant_def): Initialize variable 'defstr'.
        * varasm.c (output_constant_def): Initialize variable 'defstr'.
        * gimplify.c (simplify_expr): Initialize variables
        * gimplify.c (simplify_expr): Initialize variables
        'saved_input_filename' and 'saved_lineno'.
        'saved_input_filename' and 'saved_lineno'.
        (simplify_compound_lval): Initialize variable 'code'.
        (simplify_compound_lval): Initialize variable 'code'.
        * tree-alias-ander.c (pta_bottom): De-ansify.
        * tree-alias-ander.c (pta_bottom): De-ansify.
        (andersen_cleanup): Remove unused variables.
        (andersen_cleanup): Remove unused variables.
        (andersen_heap_assign): Mark argument lhs ATTRIBUTE_UNUSED.
        (andersen_heap_assign): Mark argument lhs ATTRIBUTE_UNUSED.
        (pta_bottom): Remove unused function.
        (pta_bottom): Remove unused function.
        (pta_get_ptsize): Remove unused function.
        (pta_get_ptsize): Remove unused function.
2003-02-02  Diego Novillo  
2003-02-02  Diego Novillo  
        * tree-dfa.c (get_expr_operands): Add a VUSE for the dereference of
        * tree-dfa.c (get_expr_operands): Add a VUSE for the dereference of
        every pointer passed in a function call.
        every pointer passed in a function call.
        Move code to add an operand for the base pointer of an
        Move code to add an operand for the base pointer of an
        INDIRECT_REF ...
        INDIRECT_REF ...
        (add_stmt_operand): ... here.
        (add_stmt_operand): ... here.
        Add a VUSE for the base pointer of every INDIRECT_REF variable.
        Add a VUSE for the base pointer of every INDIRECT_REF variable.
        (find_may_aliases_for): Fix starting index for the loop that scans
        (find_may_aliases_for): Fix starting index for the loop that scans
        INDIRECT_REFs for aliasing.
        INDIRECT_REFs for aliasing.
        Factor code that marks two variables aliased into
        Factor code that marks two variables aliased into
        register_new_alias.
        register_new_alias.
        (register_new_alias): New function.
        (register_new_alias): New function.
        (may_alias_p): Handle aliasing of structure fields.
        (may_alias_p): Handle aliasing of structure fields.
        (add_may_alias): Fix documentation.
        (add_may_alias): Fix documentation.
        (find_vars_r): Factor code that adds a new referenced variable into
        (find_vars_r): Factor code that adds a new referenced variable into
        add_referenced_var.
        add_referenced_var.
        (add_referenced_var): New function.
        (add_referenced_var): New function.
        (add_indirect_ref_var): New function.
        (add_indirect_ref_var): New function.
        (get_virtual_var): Handle variables wrapped in SSA_NAMEs.
        (get_virtual_var): Handle variables wrapped in SSA_NAMEs.
        (set_may_alias_global_mem): Move from ...
        (set_may_alias_global_mem): Move from ...
        * tree-flow-inline.h: ... here.
        * tree-flow-inline.h: ... here.
        * tree-ssa-dce.c (need_to_preserve_store): CALL_EXPRs are
        * tree-ssa-dce.c (need_to_preserve_store): CALL_EXPRs are
        implicitly live.  VA_ARG_EXPRs are not.
        implicitly live.  VA_ARG_EXPRs are not.
        (stmt_useful_p):
        (stmt_useful_p):
        * tree.h (SSA_NAME_VAR): Rename from SSA_NAME_DECL.  Update all
        * tree.h (SSA_NAME_VAR): Rename from SSA_NAME_DECL.  Update all
        users.
        users.
        (struct tree_ssa_name): Rename field 'decl' to 'var'.  Update all
        (struct tree_ssa_name): Rename field 'decl' to 'var'.  Update all
        users.
        users.
        (SSA_DECL_P): Accept only VAR_DECLs and PARM_DECLs possibly wrapped
        (SSA_DECL_P): Accept only VAR_DECLs and PARM_DECLs possibly wrapped
        inside an SSA_NAME node.
        inside an SSA_NAME node.
        (SSA_VAR_P): Also accept SSA_NAME nodes.
        (SSA_VAR_P): Also accept SSA_NAME nodes.
2003-02-01  Daniel Berlin  
2003-02-01  Daniel Berlin  
        * Makefile.in (tree-ssa-pre2.o): Remove accidental addition.
        * Makefile.in (tree-ssa-pre2.o): Remove accidental addition.
2003-01-31  Diego Novillo  
2003-01-31  Diego Novillo  
        * tree-cfg.c (find_taken_edge_cond_expr): New function.
        * tree-cfg.c (find_taken_edge_cond_expr): New function.
        (find_taken_edge_switch_expr): New function.
        (find_taken_edge_switch_expr): New function.
        (value_matches_some_label): New function.
        (value_matches_some_label): New function.
        (find_taken_edge): Re-structure to use the three new functions.
        (find_taken_edge): Re-structure to use the three new functions.
2003-01-30  Jason Merrill  
2003-01-30  Jason Merrill  
        * gimplify.c (simplify_function_tree): Set TREE_SIDE_EFFECTS on
        * gimplify.c (simplify_function_tree): Set TREE_SIDE_EFFECTS on
        the BIND_EXPR wrapper.
        the BIND_EXPR wrapper.
2003-01-30  Diego Novillo  
2003-01-30  Diego Novillo  
        * tree-dfa.c (call_may_clobber): New function.
        * tree-dfa.c (call_may_clobber): New function.
        (get_expr_operands): Call it.
        (get_expr_operands): Call it.
        (find_vars_r): Call it.
        (find_vars_r): Call it.
2003-01-30  Jeff Law 
2003-01-30  Jeff Law 
        * tree-dfa.c (struct alias_tags): New.  Collector for key information
        * tree-dfa.c (struct alias_tags): New.  Collector for key information
        regarding alias tags.
        regarding alias tags.
        (indirect_refs_base, indirect_refs_alias_set): New varrays.
        (indirect_refs_base, indirect_refs_alias_set): New varrays.
        (addressable_vars_base, addressable_vars_alias_set): Likewise.
        (addressable_vars_base, addressable_vars_alias_set): Likewise.
        (compute_may_aliases): Initialize and finalize the new varrays.
        (compute_may_aliases): Initialize and finalize the new varrays.
        Update allocation of alias tags information.
        Update allocation of alias tags information.
        (find_may_aliases_for): Extract base symbols and alias set
        (find_may_aliases_for): Extract base symbols and alias set
        information for V1 and V2 from the virtual arrays and store
        information for V1 and V2 from the virtual arrays and store
        them into local variables.  Pass them as necessary to
        them into local variables.  Pass them as necessary to
        may_alias_p, may_access_global_mem, find_alias_tag.  Add base
        may_alias_p, may_access_global_mem, find_alias_tag.  Add base
        symbol and alias set when creating a new alias tag.
        symbol and alias set when creating a new alias tag.
        (find_vars_r): Fill in new varrays as needed.
        (find_vars_r): Fill in new varrays as needed.
        (may_alias_p): Add new arguments for base and alias set of the
        (may_alias_p): Add new arguments for base and alias set of the
        two origianl incoming arguments.  No longer call get_base_symbol
        two origianl incoming arguments.  No longer call get_base_symbol
        or get_alias_set.
        or get_alias_set.
        (find_alias_tag,  may_access_global_mem): Similarly.
        (find_alias_tag,  may_access_global_mem): Similarly.
        (add_stmt_operand): Update to pass additional argument to
        (add_stmt_operand): Update to pass additional argument to
        may_access_global_mem.
        may_access_global_mem.
        (dump_alias_info): Update to deal with new alias tag structure.
        (dump_alias_info): Update to deal with new alias tag structure.
        * tree-flow.h (may_alias_p): Update prototype with new arguments.
        * tree-flow.h (may_alias_p): Update prototype with new arguments.
        * tree-ssa-pre.c (process_left_occs_and_kills): Update to pass
        * tree-ssa-pre.c (process_left_occs_and_kills): Update to pass
        new arguments to may_alias_p.
        new arguments to may_alias_p.
2003-01-30  Daniel Berlin  
2003-01-30  Daniel Berlin  
        Remove all traces of steensgaard's algorithm.
        Remove all traces of steensgaard's algorithm.
        * tree-alias-steen.c: Removed.
        * tree-alias-steen.c: Removed.
        * tree-alias-steen.h: Ditto.
        * tree-alias-steen.h: Ditto.
        * tree-alias-ecr.c: Ditto.
        * tree-alias-ecr.c: Ditto.
        * tree-alias-ecr.h: Ditto.
        * tree-alias-ecr.h: Ditto.
        * disjoint-set.c: Ditto.
        * disjoint-set.c: Ditto.
        * disjoint-set.h: Ditto.
        * disjoint-set.h: Ditto.
        * Makefile.in: Remove removed files.
        * Makefile.in: Remove removed files.
        * c-config-lang.in: Ditto.
        * c-config-lang.in: Ditto.
        * gengtype.c: Ditto.
        * gengtype.c: Ditto.
        * tree-alias-common.c: Don't use steen_alias_ops anymore.
        * tree-alias-common.c: Don't use steen_alias_ops anymore.
        * toplev.c: Remove help text and steen option.
        * toplev.c: Remove help text and steen option.
        * tree-alias-common.h: Remove PTA_STEEN.
        * tree-alias-common.h: Remove PTA_STEEN.
        * tree-alias-type.c: Remove all steensgaard related types and
        * tree-alias-type.c: Remove all steensgaard related types and
        functions.
        functions.
        * tree-alias-type.h: Ditto.
        * tree-alias-type.h: Ditto.
2003-01-30  Diego Novillo  
2003-01-30  Diego Novillo  
        * tree-cfg.c (struct cfg_stats_d): New.
        * tree-cfg.c (struct cfg_stats_d): New.
        (cfg_stats): New file local.
        (cfg_stats): New file local.
        (build_tree_cfg): Start TV_TREE_CFG timer before allocating memory.
        (build_tree_cfg): Start TV_TREE_CFG timer before allocating memory.
        Initialize cfg_stats.
        Initialize cfg_stats.
        (make_blocks): Count coalesced label blocks.
        (make_blocks): Count coalesced label blocks.
        (dump_tree_cfg): Call dump_cfg_stats if TDF_STATS is enabled.
        (dump_tree_cfg): Call dump_cfg_stats if TDF_STATS is enabled.
        (dump_cfg_stats): New.
        (dump_cfg_stats): New.
        (debug_cfg_stats): New.
        (debug_cfg_stats): New.
        * tree-dfa.c (SCALE, LABEL, PERCENT): Move ...
        * tree-dfa.c (SCALE, LABEL, PERCENT): Move ...
        * tree-flow.h: ... here
        * tree-flow.h: ... here
2003-01-29  Diego Novillo  
2003-01-29  Diego Novillo  
        * tree-cfg.c (make_blocks): Do not start a new block if the
        * tree-cfg.c (make_blocks): Do not start a new block if the
        previous statement and the current statement are labels of the same
        previous statement and the current statement are labels of the same
        kind.
        kind.
2003-01-29  Diego Novillo  
2003-01-29  Diego Novillo  
        * tree-cfg.c (parent_array): Make file local.
        * tree-cfg.c (parent_array): Make file local.
        (label_to_block_map): New file local variable.
        (label_to_block_map): New file local variable.
        (build_tree_cfg): Initialize label_to_block_map.
        (build_tree_cfg): Initialize label_to_block_map.
        (make_edges): Don't pre-scan all the blocks looking for blocks with
        (make_edges): Don't pre-scan all the blocks looking for blocks with
        labels.
        labels.
        (make_exit_edges): Remove argument label_to_block_map.  Update all
        (make_exit_edges): Remove argument label_to_block_map.  Update all
        callers.
        callers.
        (make_goto_expr_edges): Likewise.
        (make_goto_expr_edges): Likewise.
        (dump_tree_bb): Check that the block has a valid annotation.
        (dump_tree_bb): Check that the block has a valid annotation.
        (set_bb_for_stmt): If the statement is a label, add the label to
        (set_bb_for_stmt): If the statement is a label, add the label to
        the label_to_block_map.
        the label_to_block_map.
        * tree-pretty-print.c (dump_vops): Check that the block has a valid
        * tree-pretty-print.c (dump_vops): Check that the block has a valid
        annotation.
        annotation.
2003-01-29  Jeff Law 
2003-01-29  Jeff Law 
        * tree-dfa.c (find_may_aliases_for): Just accept the index of
        * tree-dfa.c (find_may_aliases_for): Just accept the index of
        the current indirect_ref.  Caller updated.
        the current indirect_ref.  Caller updated.
        (num_indirect_refs, num_addressable_vars): New variables.
        (num_indirect_refs, num_addressable_vars): New variables.
        (indirect_refs, addressable_vars): New varrays.
        (indirect_refs, addressable_vars): New varrays.
        (dump_dfa_status): Dump info on the indirect refs and
        (dump_dfa_status): Dump info on the indirect refs and
        addressable vars.
        addressable vars.
        (dump_alias_info): Similarly.
        (dump_alias_info): Similarly.
        (compute_may_aliases): Initialize and finalize the new virtual
        (compute_may_aliases): Initialize and finalize the new virtual
        arrays and hash tables for indirect refs and addressable vars.
        arrays and hash tables for indirect refs and addressable vars.
        Include setup/teardown in the cost for alias analysis.
        Include setup/teardown in the cost for alias analysis.
        (find_may_aliases_for):  Split main loop into two.  The first
        (find_may_aliases_for):  Split main loop into two.  The first
        walks over the indirect refs and takes advantage of the
        walks over the indirect refs and takes advantage of the
        symmetric properties of the aliasing relationship to avoid
        symmetric properties of the aliasing relationship to avoid
        useless work.  The second loop iterates over the addressable
        useless work.  The second loop iterates over the addressable
        variables.
        variables.
        (find_vars_r): Rework to build all three arrays we need.
        (find_vars_r): Rework to build all three arrays we need.
2003-01-29  Andreas Jaeger  
2003-01-29  Andreas Jaeger  
        * tree-alias-common.c (find_func_aliases): Remove unused variable.
        * tree-alias-common.c (find_func_aliases): Remove unused variable.
        (display_points_to_set_helper): #if 0 function to avoid warning
        (display_points_to_set_helper): #if 0 function to avoid warning
        about unused function.
        about unused function.
        * tree-alias-ecr.c (ECR_new): Remove ISO C style function
        * tree-alias-ecr.c (ECR_new): Remove ISO C style function
        definition.
        definition.
        * disjoint-set.c (disjoint_set_new): Likewise.
        * disjoint-set.c (disjoint_set_new): Likewise.
2003-01-29  Frank Ch. Eigler  
2003-01-29  Frank Ch. Eigler  
        * tree-mudflap.c (mx_xfn_indirect_ref): Use a stack of flags for
        * tree-mudflap.c (mx_xfn_indirect_ref): Use a stack of flags for
        tracking pointer dereference reads vs writes.
        tracking pointer dereference reads vs writes.
        (mf_build_check_statement_for): Pass access-type value to __mf_check.
        (mf_build_check_statement_for): Pass access-type value to __mf_check.
        * c-mudflap.c (mflang_register_call): Adapt to mf-runtime.h API change.
        * c-mudflap.c (mflang_register_call): Adapt to mf-runtime.h API change.
2003-01-29  Diego Novillo  
2003-01-29  Diego Novillo  
        * Makefile.in (ssa.o): Add dependency on $(TIMEVAR_H).
        * Makefile.in (ssa.o): Add dependency on $(TIMEVAR_H).
        * timevar.def (TV_DOM_FRONTIERS): Define.
        * timevar.def (TV_DOM_FRONTIERS): Define.
        * ssa.c (compute_dominance_frontiers): Use.
        * ssa.c (compute_dominance_frontiers): Use.
2003-01-29  Diego Novillo  
2003-01-29  Diego Novillo  
        * tree-ssa-dce.c (remove_dead_stmt): Fix uninitialized use
        * tree-ssa-dce.c (remove_dead_stmt): Fix uninitialized use
        warning.
        warning.
2003-01-28  Diego Novillo  
2003-01-28  Diego Novillo  
        * timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Adjust legend.
        * timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Adjust legend.
        * tree-ssa.c (rewrite_into_ssa): Use TV_TREE_SSA_REWRITE_BLOCKS.
        * tree-ssa.c (rewrite_into_ssa): Use TV_TREE_SSA_REWRITE_BLOCKS.
        (mark_def_sites): Add comment.
        (mark_def_sites): Add comment.
2003-01-28  Jeff Law 
2003-01-28  Jeff Law 
        * ssa.c (compute_dominance_frontiers_1): Use get_dominated_by
        * ssa.c (compute_dominance_frontiers_1): Use get_dominated_by
        to avoid useless walks over all the basic blocks.  Use cache
        to avoid useless walks over all the basic blocks.  Use cache
        of immediate dominators to avoid silly calls to get_immediate_dominator.
        of immediate dominators to avoid silly calls to get_immediate_dominator.
        Do not clear elements of the frontiers bitmap.
        Do not clear elements of the frontiers bitmap.
        (compute_dominance_frontiers): Compute cache of immediate
        (compute_dominance_frontiers): Compute cache of immediate
        dominators and pass it to compute_dominance_frontiers_1.  Clear
        dominators and pass it to compute_dominance_frontiers_1.  Clear
        the entire vector of frontiers bitmaps.
        the entire vector of frontiers bitmaps.
        * timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Renamed from
        * timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Renamed from
        TV_TREE_BUILD_SSA.
        TV_TREE_BUILD_SSA.
        (TV_TREE_SSA_OTHER): New timevar.
        (TV_TREE_SSA_OTHER): New timevar.
        * tree-ssa.c (rewrite_into_ssa): Updated.  Use new TV_TREE_SSA_OTHER
        * tree-ssa.c (rewrite_into_ssa): Updated.  Use new TV_TREE_SSA_OTHER
        timevar.
        timevar.
        * tree.h (LABEL_DECL_INDEX): Define for use by CFG builder.
        * tree.h (LABEL_DECL_INDEX): Define for use by CFG builder.
        * tree-cfg.c (make_exit_edges): Accept and pass though label to
        * tree-cfg.c (make_exit_edges): Accept and pass though label to
        block mapping array.
        block mapping array.
        (make_goto_expr_edges): For simple gotos, lookup the destination
        (make_goto_expr_edges): For simple gotos, lookup the destination
        in the label to block mapping array.  Zap old slow code to
        in the label to block mapping array.  Zap old slow code to
        handle simple gotos.
        handle simple gotos.
        (make_edges): Build the label to block mapping array.
        (make_edges): Build the label to block mapping array.
        * tree.h (PHI_NODE_ELT_CHECK): Provide version when ENABLE_CHECKING
        * tree.h (PHI_NODE_ELT_CHECK): Provide version when ENABLE_CHECKING
        is not defined.
        is not defined.
2003-01-28  Diego Novillo  
2003-01-28  Diego Novillo  
        * tree-flow-inline.h (parent_block, set_parent_block, phi_nodes):
        * tree-flow-inline.h (parent_block, set_parent_block, phi_nodes):
        Assume that blocks always have valid annotations.
        Assume that blocks always have valid annotations.
        (add_dom_child): New function.
        (add_dom_child): New function.
        (dominator_children): New function.
        (dominator_children): New function.
        * tree-flow.h (struct bb_ann_d): Add field 'dom_children'.
        * tree-flow.h (struct bb_ann_d): Add field 'dom_children'.
        * tree-ssa.c (mark_def_sites): Add parameter 'idom'.
        * tree-ssa.c (mark_def_sites): Add parameter 'idom'.
        Add each block BB to the set of dominator children of BB's
        Add each block BB to the set of dominator children of BB's
        immediate dominator.
        immediate dominator.
        (rewrite_block): Remove 'idom' parameter.
        (rewrite_block): Remove 'idom' parameter.
        Recurse into blocks set in the dominator children bitmap.
        Recurse into blocks set in the dominator children bitmap.
2003-01-28  Diego Novillo  
2003-01-28  Diego Novillo  
        * flags.h (flag_disable_tree_ssa): New flag.
        * flags.h (flag_disable_tree_ssa): New flag.
        * c-decl.c (c_expand_body): Use it.
        * c-decl.c (c_expand_body): Use it.
        * toplev.c: Declare it.
        * toplev.c: Declare it.
        (f_options): Add help text for -fdisable-tree-ssa.
        (f_options): Add help text for -fdisable-tree-ssa.
        * doc/invoke.texi: Add documentation for -fdisable-tree-ssa.
        * doc/invoke.texi: Add documentation for -fdisable-tree-ssa.
2003-01-28  Diego Novillo  
2003-01-28  Diego Novillo  
        * Makefile.in (TREE_FLOW_H): Add dependency on $(HASHTAB_H)
        * Makefile.in (TREE_FLOW_H): Add dependency on $(HASHTAB_H)
        (OBJS): Temporarily remove tree-ssa-pre.o.
        (OBJS): Temporarily remove tree-ssa-pre.o.
        (tree-ssa.o, c-decl.o): Add dependency on $(TREE_DUMP_H).
        (tree-ssa.o, c-decl.o): Add dependency on $(TREE_DUMP_H).
        * c-decl.c: Include tree-dump.h
        * c-decl.c: Include tree-dump.h
        * c-pretty-print.c (dump_c_node): Fix rendering of GOTO_STMTs to
        * c-pretty-print.c (dump_c_node): Fix rendering of GOTO_STMTs to
        computed locations.
        computed locations.
        (op_prio): Don't abort on unknown operators.
        (op_prio): Don't abort on unknown operators.
        * c-simplify.c (mostly_copy_tree_r): Don't copy statement
        * c-simplify.c (mostly_copy_tree_r): Don't copy statement
        annotations.
        annotations.
        * gimplify.c (simplify_addr_expr): Mark the RHS of the simplified
        * gimplify.c (simplify_addr_expr): Mark the RHS of the simplified
        ADDR_EXPR addressable.
        ADDR_EXPR addressable.
        (mostly_copy_tree_r): Don't copy statement annotations.
        (mostly_copy_tree_r): Don't copy statement annotations.
        * old-tree-inline.c (walk_tree): Handle SSA_NAME nodes.
        * old-tree-inline.c (walk_tree): Handle SSA_NAME nodes.
        * timevar.def (TV_TREE_RDEFS): Remove.
        * timevar.def (TV_TREE_RDEFS): Remove.
        (TV_TREE_BUILD_SSA): Define.
        (TV_TREE_BUILD_SSA): Define.
        (TV_TREE_DFA): Define.
        (TV_TREE_DFA): Define.
        * tree-cfg.c: Update copyright notices.
        * tree-cfg.c: Update copyright notices.
        Remove doxygen markers everywhere.
        Remove doxygen markers everywhere.
        (remove_unreachable_block): New local function
        (remove_unreachable_block): New local function
        (remove_unreachable_blocks): Call it.
        (remove_unreachable_blocks): Call it.
        (remove_bb): Rename from remove_tree_bb.  Update all callers.
        (remove_bb): Rename from remove_tree_bb.  Update all callers.
        (validate_loops): Remove unused function.
        (validate_loops): Remove unused function.
        (block_invalidates_loop): Remove unused function.
        (block_invalidates_loop): Remove unused function.
        (remove_stmt): Invalidate the defining statement of all the
        (remove_stmt): Invalidate the defining statement of all the
        definitions made by the statement.
        definitions made by the statement.
        Remove the annotation before replacing the statement with
        Remove the annotation before replacing the statement with
        empty_stmt_node.
        empty_stmt_node.
        * tree-dfa.c: Update copyright notices.
        * tree-dfa.c: Update copyright notices.
        Remove doxygen markers everywhere.
        Remove doxygen markers everywhere.
        (struct clobber_data_d): Remove existing fields.  Add fields 'stmt'
        (struct clobber_data_d): Remove existing fields.  Add fields 'stmt'
        and 'prev_vops'.  Update all users.
        and 'prev_vops'.  Update all users.
        (alias_tags): Rename from alias_leaders.
        (alias_tags): Rename from alias_leaders.
        (num_alias_tags): Rename from num_alias_leaders.
        (num_alias_tags): Rename from num_alias_leaders.
        (struct dfa_stats_d): Declare.
        (struct dfa_stats_d): Declare.
        (struct dfa_counts_d): Remove.  Update all users.
        (struct dfa_counts_d): Remove.  Update all users.
        (TRM_*): Remove.  Update all users.
        (TRM_*): Remove.  Update all users.
        (find_tree_refs): Remove.  Update all users.
        (find_tree_refs): Remove.  Update all users.
        (get_stmt_operands): Rename from find_refs_in_stmt.  Update all users.
        (get_stmt_operands): Rename from find_refs_in_stmt.  Update all users.
        (get_expr_operands): Rename from find_refs_in_expr.  Update all users.
        (get_expr_operands): Rename from find_refs_in_expr.  Update all users.
        (add_stmt_operand): New function.
        (add_stmt_operand): New function.
        (set_def): New function.
        (set_def): New function.
        (add_use): New function.
        (add_use): New function.
        (add_vdef): New function.
        (add_vdef): New function.
        (add_vuse): New function.
        (add_vuse): New function.
        (create_phi_node): New function.
        (create_phi_node): New function.
        (copy_stmt): New function.
        (copy_stmt): New function.
        (compute_immediate_uses): New function.
        (compute_immediate_uses): New function.
        (compute_immediate_uses_for): New function.
        (compute_immediate_uses_for): New function.
        (compute_reached_uses): New function.
        (compute_reached_uses): New function.
        (compute_reaching_defs): New function.
        (compute_reaching_defs): New function.
        (add_immediate_use): New function.
        (add_immediate_use): New function.
        (create_var_ann): New function.
        (create_var_ann): New function.
        (create_stmt_ann): New function.
        (create_stmt_ann): New function.
        (dump_immediate_uses): New function.
        (dump_immediate_uses): New function.
        (debug_immediate_uses): New function.
        (debug_immediate_uses): New function.
        (dump_immediate_uses_for): New function.
        (dump_immediate_uses_for): New function.
        (debug_immediate_uses_for): New function.
        (debug_immediate_uses_for): New function.
        (create_ref_list, empty_ref_list, add_ref_to_list_begin,
        (create_ref_list, empty_ref_list, add_ref_to_list_begin,
        add_ref_to_list_end, add_list_to_list_begin, add_list_to_list_end,
        add_ref_to_list_end, add_list_to_list_begin, add_list_to_list_end,
        find_list_node, rli_start, rli_start_last, rli_start_at,
        find_list_node, rli_start, rli_start_last, rli_start_at,
        rli_delete, add_ref_to_list_after, tree_ref_size, create_ref,
        rli_delete, add_ref_to_list_after, tree_ref_size, create_ref,
        add_ephi_arg, add_referenced_var, replace_ref_with,
        add_ephi_arg, add_referenced_var, replace_ref_with,
        try_replace_ref_with, replace_ref_r, replace_ref_stmt_with,
        try_replace_ref_with, replace_ref_r, replace_ref_stmt_with,
        remove_ref, remove_def, reset_def_def_links, replace_phi_arg_with,
        remove_ref, remove_def, reset_def_def_links, replace_phi_arg_with,
        create_tree_ann, function_may_recurse_p, dump_ref, debug_ref,
        create_tree_ann, function_may_recurse_p, dump_ref, debug_ref,
        dump_ref_list, dump_ref_array, debug_ref_list, debug_ref_array,
        dump_ref_list, dump_ref_array, debug_ref_list, debug_ref_array,
        dump_phi_args, dump_if_different, count_tree_refs, ref_type_name,
        dump_phi_args, dump_if_different, count_tree_refs, ref_type_name,
        ref_defines, is_killing_def, tree_ref_structure, output_ref):
        ref_defines, is_killing_def, tree_ref_structure, output_ref):
        Remove.  Update all users.
        Remove.  Update all users.
        (dump_referenced_vars): Remove parameter 'details'.  Update all
        (dump_referenced_vars): Remove parameter 'details'.  Update all
        users.
        users.
        (dump_variable): Don't abort if the variable is nil.  Display all
        (dump_variable): Don't abort if the variable is nil.  Display all
        the aliases for the variable.
        the aliases for the variable.
        (dump_dfa_stats): Handle new counters.
        (dump_dfa_stats): Handle new counters.
        (collect_dfa_stats): Likewise.
        (collect_dfa_stats): Likewise.
        (collect_dfa_stats_r): Likewise.
        (collect_dfa_stats_r): Likewise.
        (find_vars_r): New function.
        (find_vars_r): New function.
        (compute_may_aliases): Call it via walk_tree before computing aliases.
        (compute_may_aliases): Call it via walk_tree before computing aliases.
        Only use alias tags if -ftree-points-to is not given.
        Only use alias tags if -ftree-points-to is not given.
        Call add_may_alias.
        Call add_may_alias.
        (find_may_aliases_for): Only use alias tags if -ftree-points-to is
        (find_may_aliases_for): Only use alias tags if -ftree-points-to is
        not given.
        not given.
        (add_may_alias): New function.
        (add_may_alias): New function.
        (find_alias_tag): Rename from find_alias_leader.
        (find_alias_tag): Rename from find_alias_leader.
        (dump_alias_info): New function.
        (dump_alias_info): New function.
        (debug_alias_info): New function.
        (debug_alias_info): New function.
        (htab_hash_var): New function.
        (htab_hash_var): New function.
        (htab_var_eq): New function.
        (htab_var_eq): New function.
        (get_virtual_var): New function.
        (get_virtual_var): New function.
        * tree-dump.c (struct dump_option_value_info): Rename -block to
        * tree-dump.c (struct dump_option_value_info): Rename -block to
        -blocks.  Add new option -vops.
        -blocks.  Add new option -vops.
        (dump_function): Don't display which pass enabled the dump.
        (dump_function): Don't display which pass enabled the dump.
        * tree-flow-inline.h: Update copyright notices.
        * tree-flow-inline.h: Update copyright notices.
        (var_ann): New function.
        (var_ann): New function.
        (stmt_ann): New function.
        (stmt_ann): New function.
        (ann_type): New function.
        (ann_type): New function.
        (bb_ann): Rename from bb_annotation.
        (bb_ann): Rename from bb_annotation.
        (may_aliases): New function.
        (may_aliases): New function.
        (set_may_alias_global_mem): New function.
        (set_may_alias_global_mem): New function.
        (may_alias_global_mem_p): New function.
        (may_alias_global_mem_p): New function.
        (set_indirect_ref): New function.
        (set_indirect_ref): New function.
        (indirect_ref): New function.
        (indirect_ref): New function.
        (is_dereferenced): New function.
        (is_dereferenced): New function.
        (modify_stmt): New function.
        (modify_stmt): New function.
        (unmodify_stmt): New function.
        (unmodify_stmt): New function.
        (stmt_modified_p): New function.
        (stmt_modified_p): New function.
        (def_op): New function.
        (def_op): New function.
        (use_ops): New function.
        (use_ops): New function.
        (vdef_ops): New function.
        (vdef_ops): New function.
        (vuse_ops): New function.
        (vuse_ops): New function.
        (immediate_uses): New function.
        (immediate_uses): New function.
        (reaching_defs): New function.
        (reaching_defs): New function.
        (phi_nodes): New function.
        (phi_nodes): New function.
        (same_var_p): New function.
        (same_var_p): New function.
        (gsi_step_in_bb): Re-implement.  Check if the iterator stepped out
        (gsi_step_in_bb): Re-implement.  Check if the iterator stepped out
        of the block by calling bb_for_stmt.
        of the block by calling bb_for_stmt.
        (gsi_end_bb_p): Rename from gsi_end_bb.  Update all users.
        (gsi_end_bb_p): Rename from gsi_end_bb.  Update all users.
        Call gsi_stmt to determine if the iterator has reached the end of
        Call gsi_stmt to determine if the iterator has reached the end of
        the block.
        the block.
        (ref_id, ref_type, ref_bb, ref_stmt, ref_var, imm_uses,
        (ref_id, ref_type, ref_bb, ref_stmt, ref_var, imm_uses,
        reached_uses, imm_reaching_def, set_imm_reaching_def,
        reached_uses, imm_reaching_def, set_imm_reaching_def,
        set_phi_arg_def, phi_arg_def, set_phi_arg_edge, phi_arg_edge,
        set_phi_arg_def, phi_arg_def, set_phi_arg_edge, phi_arg_edge,
        reaching_defs, phi_args, num_phi_args, phi_arg, set_phi_arg,
        reaching_defs, phi_args, num_phi_args, phi_arg, set_phi_arg,
        tree_annotation, tree_refs, add_tree_ref, remove_tree_ref,
        tree_annotation, tree_refs, add_tree_ref, remove_tree_ref,
        alias_leader, set_alias_leader, set_tree_flag, clear_tree_flag,
        alias_leader, set_alias_leader, set_tree_flag, clear_tree_flag,
        reset_tree_flags, tree_flags, indirect_var, set_indirect_var,
        reset_tree_flags, tree_flags, indirect_var, set_indirect_var,
        bb_refs, remove_bb_ref, set_exprref_class, exprref_class,
        bb_refs, remove_bb_ref, set_exprref_class, exprref_class,
        set_exprref_inserted, exprref_inserted, set_exprref_save,
        set_exprref_inserted, exprref_inserted, set_exprref_save,
        exprref_save, set_exprref_reload, exprref_reload,
        exprref_save, set_exprref_reload, exprref_reload,
        set_exprref_processed, set_exprref_processed2, exprref_processed2i,
        set_exprref_processed, set_exprref_processed2, exprref_processed2i,
        exprref_uses, set_exprref_uses, set_expruse_def, expruse_def,
        exprref_uses, set_exprref_uses, set_expruse_def, expruse_def,
        set_expruse_phiop, expruse_phiop, set_expruse_phi, expruse_phi,
        set_expruse_phiop, expruse_phiop, set_expruse_phi, expruse_phi,
        set_expruse_has_real_use, expruse_has_real_use,
        set_expruse_has_real_use, expruse_has_real_use,
        set_exprphi_phi_args, exprphi_phi_args, num_ephi_args, ephi_arg,
        set_exprphi_phi_args, exprphi_phi_args, num_ephi_args, ephi_arg,
        set_ephi_arg, set_exprphi_downsafe, exprphi_downsafe,
        set_ephi_arg, set_exprphi_downsafe, exprphi_downsafe,
        set_exprphi_canbeavail, exprphi_canbeavail, set_exprphi_later,
        set_exprphi_canbeavail, exprphi_canbeavail, set_exprphi_later,
        exprphi_later, set_exprphi_extraneous, exprphi_extraneous,
        exprphi_later, set_exprphi_extraneous, exprphi_extraneous,
        exprphi_willbeavail, is_assignment_stmt, is_may_ref, is_may_def,
        exprphi_willbeavail, is_assignment_stmt, is_may_ref, is_may_def,
        is_may_use, is_partial_ref, is_partial_use, is_volatile_ref,
        is_may_use, is_partial_ref, is_partial_use, is_volatile_ref,
        is_volatile_def, is_volatile_use, is_clobbering_def,
        is_volatile_def, is_volatile_use, is_clobbering_def,
        is_relocating_def, is_addressof_use, is_pure_use, is_pure_def,
        is_relocating_def, is_addressof_use, is_pure_use, is_pure_def,
        rli_after_end, rli_step, rli_step_rev, rli_ref, get_last_ref,
        rli_after_end, rli_step, rli_step_rev, rli_ref, get_last_ref,
        get_first_ref, ref_list_is_empty): Remove.  Update all users.
        get_first_ref, ref_list_is_empty): Remove.  Update all users.
        * tree-flow.h: Update copyright notices.
        * tree-flow.h: Update copyright notices.
        Remove doxygen markers.
        Remove doxygen markers.
        Include hashtab.h.
        Include hashtab.h.
        (enum tree_ann_type): New.
        (enum tree_ann_type): New.
        (struct tree_ann_common_d): New.
        (struct tree_ann_common_d): New.
        (struct var_ann_d): New.
        (struct var_ann_d): New.
        (struct operands_d): New.
        (struct operands_d): New.
        (struct voperands_d): New.
        (struct voperands_d): New.
        (operands_t): New type.
        (operands_t): New type.
        (voperands_t): New type.
        (voperands_t): New type.
        (struct dataflow_d): New.
        (struct dataflow_d): New.
        (dataflow_t): New type.
        (dataflow_t): New type.
        (struct stmt_ann_d): New.
        (struct stmt_ann_d): New.
        (tree_ann): New type.
        (tree_ann): New type.
        (var_ann_t): New type.
        (var_ann_t): New type.
        (stmt_ann_t): New type.
        (stmt_ann_t): New type.
        (bb_ann_t): Rename from bb_ann.
        (bb_ann_t): Rename from bb_ann.
        (enum tree_ref_type, TRM_*, struct ref_list_node, struct
        (enum tree_ref_type, TRM_*, struct ref_list_node, struct
        ref_list_priv, ref_list, struct tree_ref_common, struct var_ref_d,
        ref_list_priv, ref_list, struct tree_ref_common, struct var_ref_d,
        struct var_def_d, struct var_phi_d, struct var_use_d, struct
        struct var_def_d, struct var_phi_d, struct var_use_d, struct
        phi_node_arg_d, phi_node_arg, struct expr_ref_common, struct
        phi_node_arg_d, phi_node_arg, struct expr_ref_common, struct
        expr_phi_d, struct expr_use_d, enum tree_ref_structure_enum, union
        expr_phi_d, struct expr_use_d, enum tree_ref_structure_enum, union
        tree_ref_d, tree_ref, struct tree_ann_d, tree_ann, enum tree_flags,
        tree_ref_d, tree_ref, struct tree_ann_d, tree_ann, enum tree_flags,
        struct dfa_counts_d, ref_list_iterator): Remove.  Update all users.
        struct dfa_counts_d, ref_list_iterator): Remove.  Update all users.
        (TDFA_USE_OPS): Define.
        (TDFA_USE_OPS): Define.
        (TDFA_USE_VOPS): Define.
        (TDFA_USE_VOPS): Define.
        * tree-inline.c (walk_tree): Handle SSA_NAME nodes.
        * tree-inline.c (walk_tree): Handle SSA_NAME nodes.
        * tree-optimize.c: Update copyright notices.
        * tree-optimize.c: Update copyright notices.
        Remove doxygen markers.
        Remove doxygen markers.
        (optimize_function_tree): Temporarily disable call to
        (optimize_function_tree): Temporarily disable call to
        tree_perform_ssapre.
        tree_perform_ssapre.
        Remove #if0 code.
        Remove #if0 code.
        * tree-pretty-print.c (MASK_POINTER): Define.
        * tree-pretty-print.c (MASK_POINTER): Define.
        (dump_vops): New function.
        (dump_vops): New function.
        (dump_generic_node): Shorten made-up names for unnamed objects.
        (dump_generic_node): Shorten made-up names for unnamed objects.
        Hanlde PHI_NODE, VDEF_EXPR and SSA_NAME nodes.
        Hanlde PHI_NODE, VDEF_EXPR and SSA_NAME nodes.
        Keep track of basic block transitions.
        Keep track of basic block transitions.
        Call dump_vops if -vops dump option is given.
        Call dump_vops if -vops dump option is given.
        (op_prio): Don't abort if the operand is nil.
        (op_prio): Don't abort if the operand is nil.
        (dump_block_info): Don't keep track of basic block transitions.
        (dump_block_info): Don't keep track of basic block transitions.
        * tree-simple.c: Update copyright notices.
        * tree-simple.c: Update copyright notices.
        (get_base_symbol): Call STRIP_NOPS.
        (get_base_symbol): Call STRIP_NOPS.
        Handle SSA_NAME nodes.
        Handle SSA_NAME nodes.
        * tree-simple.h: Update copyright notices.
        * tree-simple.h: Update copyright notices.
        (gsi_end_p): Rename from gsi_end.  Update all callers.
        (gsi_end_p): Rename from gsi_end.  Update all callers.
        * tree-ssa-ccp.c: Update copyright notices.
        * tree-ssa-ccp.c: Update copyright notices.
        Update code to use the new SSA infrastructure.
        Update code to use the new SSA infrastructure.
        (const_values): New hash table to keep track of constants.
        (const_values): New hash table to keep track of constants.
        (struct value_map_d): New.
        (struct value_map_d): New.
        (cfg_edges): Rename from edges.  Update all users.
        (cfg_edges): Rename from edges.  Update all users.
        (set_value): New function.
        (set_value): New function.
        (get_value): New function.
        (get_value): New function.
        (get_default_value): New function.
        (get_default_value): New function.
        (value_map_hash): New function.
        (value_map_hash): New function.
        (value_map_eq): New function.
        (value_map_eq): New function.
        * tree-ssa-dce.c: Update copyright notice.
        * tree-ssa-dce.c: Update copyright notice.
        Update code to use new SSA infrastructure.  Factor some code into
        Update code to use new SSA infrastructure.  Factor some code into
        new functions.
        new functions.
        (dom_info): Declare with file scope.
        (dom_info): Declare with file scope.
        (struct stmt_stats): Add fields 'total_phis' and 'removed_phis'.
        (struct stmt_stats): Add fields 'total_phis' and 'removed_phis'.
        (needed_stmts): New hash table to keep track of needed statements.
        (needed_stmts): New hash table to keep track of needed statements.
        (stmt_useful_p): New function.
        (stmt_useful_p): New function.
        (find_useful_stmts): Call it.
        (find_useful_stmts): Call it.
        (remove_dead_stmt, remove_dead_phis): New functions.
        (remove_dead_stmt, remove_dead_phis): New functions.
        (remove_dead_stmts): Call them.
        (remove_dead_stmts): Call them.
        (need_to_preserve_store): Preserve stores to volatile variables.
        (need_to_preserve_store): Preserve stores to volatile variables.
        (tree_ssa_dce): Rename from tree_ssa_eliminate_dead_code.  Update
        (tree_ssa_dce): Rename from tree_ssa_eliminate_dead_code.  Update
        all users.
        all users.
        * tree-ssa.c: Update copyright notice.
        * tree-ssa.c: Update copyright notice.
        Change basic algorithm to rewrite the function into SSA form
        Change basic algorithm to rewrite the function into SSA form
        instead of building factored use-def chains.
        instead of building factored use-def chains.
        Include hashtab.h and tree-dump.h
        Include hashtab.h and tree-dump.h
        (next_ssa_version): New global variable.
        (next_ssa_version): New global variable.
        (def_blocks): New file local variable.
        (def_blocks): New file local variable.
        (struct def_blocks_d): New.
        (struct def_blocks_d): New.
        (currdefs): New file local variable.
        (currdefs): New file local variable.
        (struct currdef_d): New.
        (struct currdef_d): New.
        (rewrite_into_ssa): Rename from build_tree_ssa.  Update all users.
        (rewrite_into_ssa): Rename from build_tree_ssa.  Update all users.
        Call compute_may_aliases, mark_def_sites and rewrite_block.
        Call compute_may_aliases, mark_def_sites and rewrite_block.
        (rewrite_block): Rename from search_fud_chains.  Call
        (rewrite_block): Rename from search_fud_chains.  Call
        rewrite_stmts.
        rewrite_stmts.
        (mark_def_sites): New function.
        (mark_def_sites): New function.
        (set_def_block): New function.
        (set_def_block): New function.
        (rewrite_stmts): New function.
        (rewrite_stmts): New function.
        (rewrite_stmt): New function.
        (rewrite_stmt): New function.
        (rewrite_operand): New function.
        (rewrite_operand): New function.
        (rewrite_out_of_ssa): New function.
        (rewrite_out_of_ssa): New function.
        (remove_phi_node): New function.
        (remove_phi_node): New function.
        (register_new_def): New function.
        (register_new_def): New function.
        (def_blocks_free): New function.
        (def_blocks_free): New function.
        (def_blocks_hash): New function.
        (def_blocks_hash): New function.
        (def_blocks_eq): New function.
        (def_blocks_eq): New function.
        (currdef_hash): New function.
        (currdef_hash): New function.
        (currdef_eq): New function.
        (currdef_eq): New function.
        (debug_def_blocks): New function.
        (debug_def_blocks): New function.
        (debug_def_blocks_r): New function.
        (debug_def_blocks_r): New function.
        (build_fud_chains, compute_reaching_defs, follow_chain,
        (build_fud_chains, compute_reaching_defs, follow_chain,
        dump_reaching_defs, debug_reaching_defs, set_ssa_links): Remove.
        dump_reaching_defs, debug_reaching_defs, set_ssa_links): Remove.
        (remove_phi_arg): Rename from tree_ssa_remove_phi_alternative.
        (remove_phi_arg): Rename from tree_ssa_remove_phi_alternative.
        Update all users.
        Update all users.
        (init_tree_ssa): Set next_ssa_version to 1.
        (init_tree_ssa): Set next_ssa_version to 1.
        Create hash tables def_blocks and currdefs.
        Create hash tables def_blocks and currdefs.
        (delete_tree_ssa): Accept a FUNCTION_DECL tree as argument.  Update
        (delete_tree_ssa): Accept a FUNCTION_DECL tree as argument.  Update
        all users.
        all users.
        (currdef_for): Add new parameter 'create_default'.  If nonzero,
        (currdef_for): Add new parameter 'create_default'.  If nonzero,
        create a new SSA name if none is found for the variable.
        create a new SSA name if none is found for the variable.
        (set_currdef_for): Search in the currdefs hash table.
        (set_currdef_for): Search in the currdefs hash table.
        * tree.c (tree_node_kind): Add new values phi_kind and
        * tree.c (tree_node_kind): Add new values phi_kind and
        ssa_name_kind.
        ssa_name_kind.
        (tree_node_kind_names): Likewise.
        (tree_node_kind_names): Likewise.
        (tree_size): Handle PHI_NODE and SSA_NAME nodes.
        (tree_size): Handle PHI_NODE and SSA_NAME nodes.
        (make_node): Likewise.
        (make_node): Likewise.
        (tree_node_structure): Likewise.
        (tree_node_structure): Likewise.
        (phi_node_elt_check_failed): New function.
        (phi_node_elt_check_failed): New function.
        (make_phi_node): New function.
        (make_phi_node): New function.
        (make_ssa_name): New function.
        (make_ssa_name): New function.
        (build_vdef_expr): New function.
        (build_vdef_expr): New function.
        * tree.def (SSA_NAME): New code.
        * tree.def (SSA_NAME): New code.
        (VDEF_EXPR): New code.
        (VDEF_EXPR): New code.
        (PHI_NODE): New code.
        (PHI_NODE): New code.
        * tree.h (union tree_ann_d): Forward declare.
        * tree.h (union tree_ann_d): Forward declare.
        (struct tree_common): Change type of field 'ann'.
        (struct tree_common): Change type of field 'ann'.
        (PHI_NODE_ELT_CHECK): Define.
        (PHI_NODE_ELT_CHECK): Define.
        (phi_node_elt_check_failed): Declare.
        (phi_node_elt_check_failed): Declare.
        (VDEF_RESULT): Define.
        (VDEF_RESULT): Define.
        (VDEF_OP): Define.
        (VDEF_OP): Define.
        (SSA_NAME_DECL): Define.
        (SSA_NAME_DECL): Define.
        (SSA_NAME_DEF_STMT): Define.
        (SSA_NAME_DEF_STMT): Define.
        (SSA_NAME_VERSION): Define.
        (SSA_NAME_VERSION): Define.
        (struct tree_ssa_name): New.
        (struct tree_ssa_name): New.
        (PHI_RESULT): Define.
        (PHI_RESULT): Define.
        (PHI_NUM_ARGS): Define.
        (PHI_NUM_ARGS): Define.
        (PHI_ARG_CAPACITY): Define.
        (PHI_ARG_CAPACITY): Define.
        (PHI_ARG_ELT): Define.
        (PHI_ARG_ELT): Define.
        (PHI_ARG_EDGE): Define.
        (PHI_ARG_EDGE): Define.
        (PHI_ARG_DEF): Define.
        (PHI_ARG_DEF): Define.
        (struct phi_arg_d): New.
        (struct phi_arg_d): New.
        (struct tree_phi_node): New.
        (struct tree_phi_node): New.
        (SSA_DECL_P): Define.
        (SSA_DECL_P): Define.
        (SSA_VAR_P): Define.
        (SSA_VAR_P): Define.
        (enum tree_node_structure_enum): Add values TS_SSA_NAME and
        (enum tree_node_structure_enum): Add values TS_SSA_NAME and
        TS_PHI_NODE.
        TS_PHI_NODE.
        (union tree_node): Add fields 'ssa_name' and 'phi'.
        (union tree_node): Add fields 'ssa_name' and 'phi'.
        (make_phi_node): Declare.
        (make_phi_node): Declare.
        (make_ssa_name): Declare.
        (make_ssa_name): Declare.
        (build_vdef_expr): Declare.
        (build_vdef_expr): Declare.
        (TDF_BLOCKS): Rename from TDF_BLOCK.
        (TDF_BLOCKS): Rename from TDF_BLOCK.
        (TDF_VOPS): Define.
        (TDF_VOPS): Define.
        * doc/invoke.texi: Document new tree dump option -vops.  Update
        * doc/invoke.texi: Document new tree dump option -vops.  Update
        documentation for switch -blocks.
        documentation for switch -blocks.
2003-01-27  Jeff Law 
2003-01-27  Jeff Law 
        * gimplify.c (simplify_return_expr): Correctly handle return
        * gimplify.c (simplify_return_expr): Correctly handle return
        expressions with side effects in functions returning void.
        expressions with side effects in functions returning void.
        * tree-ssa-ccp.c (widen_bitfield): Do not try to widen anything
        * tree-ssa-ccp.c (widen_bitfield): Do not try to widen anything
        except constant integers.
        except constant integers.
2003-01-26  Jeff Law 
2003-01-26  Jeff Law 
        * c-simplify.c (simplify_decl_stmt): Fix comment typo.
        * c-simplify.c (simplify_decl_stmt): Fix comment typo.
        Use correct predicate when "simplifying" a static initializer.
        Use correct predicate when "simplifying" a static initializer.
2003-01-26  Andreas Jaeger  
2003-01-26  Andreas Jaeger  
        * Makefile.in (gt-dependence.h): New rule.
        * Makefile.in (gt-dependence.h): New rule.
2003-01-23  Jeff Law 
2003-01-23  Jeff Law 
        * c-simplify.c (simplify_decl_stmt): Arrange to examine initializers
        * c-simplify.c (simplify_decl_stmt): Arrange to examine initializers
        for static variables.
        for static variables.
        * gimplify.c (simplify_constructor): Kill initial is_simple_constructor
        * gimplify.c (simplify_constructor): Kill initial is_simple_constructor
        check.
        check.
        (simplify_modify_expr): Get the type from the destination rather than
        (simplify_modify_expr): Get the type from the destination rather than
        the toplevel expression.  Handle case where type is ARRAY_TYPE.  Ignore
        the toplevel expression.  Handle case where type is ARRAY_TYPE.  Ignore
        TREE_STATIC for the RHS.
        TREE_STATIC for the RHS.
2003-01-24  Frank Ch. Eigler  
2003-01-24  Frank Ch. Eigler  
        * tree-mudflap.c (mf_varname_tree): Check for non-NULL DECL_NAME
        * tree-mudflap.c (mf_varname_tree): Check for non-NULL DECL_NAME
        before trying to cplus_demangle it.
        before trying to cplus_demangle it.
2003-01-23  Jeff Law 
2003-01-23  Jeff Law 
        * tree-cfg.c (make_exit_edges): Fix thinkos.
        * tree-cfg.c (make_exit_edges): Fix thinkos.
2003-01-22  Jeff Law 
2003-01-22  Jeff Law 
        * tree-cfg.c (make_goto_expr_edges): Check the underlying
        * tree-cfg.c (make_goto_expr_edges): Check the underlying
        LABEL_DECL, not the LABEL_EXPR for FORCED_LABEL and NONLOCAL_LABEL.
        LABEL_DECL, not the LABEL_EXPR for FORCED_LABEL and NONLOCAL_LABEL.
        * gimplify.c (simplify_expr, case GOTO_EXPR): Identify and mark
        * gimplify.c (simplify_expr, case GOTO_EXPR): Identify and mark
        labels which are targets of nonlocal gotos and mark functions which
        labels which are targets of nonlocal gotos and mark functions which
        have labels which are targets of nonlocal gotos.
        have labels which are targets of nonlocal gotos.
        (simplify_expr, case LABEL_DECL): New case.  Mark labels which
        (simplify_expr, case LABEL_DECL): New case.  Mark labels which
        have their address taken.
        have their address taken.
        * tree-cfg.c (is_nonlocal_label_block): Remove.  All callers
        * tree-cfg.c (is_nonlocal_label_block): Remove.  All callers
        updated.
        updated.
        (make_exit_edges, case GOTO_EXPR): Handle computed gotos sanely.
        (make_exit_edges, case GOTO_EXPR): Handle computed gotos sanely.
        (make_exit_edges, case CALL_EXPR): Handle abnormal edges from
        (make_exit_edges, case CALL_EXPR): Handle abnormal edges from
        nonlocal gotos at call sites.
        nonlocal gotos at call sites.
        (make_exit_edges, case RETURN_EXPR): Likewise.
        (make_exit_edges, case RETURN_EXPR): Likewise.
        (make_exit_edges, case MODIFY_EXPR): New case to handle abnormal
        (make_exit_edges, case MODIFY_EXPR): New case to handle abnormal
        edges from nonlocal gotos as call sites.
        edges from nonlocal gotos as call sites.
        (make_goto_expr_edges): Handle computed gotos and nonlocal gotos.
        (make_goto_expr_edges): Handle computed gotos and nonlocal gotos.
        (is_ctrl_altering_stmt): Handle abnormal edges in CALL_EXPRs
        (is_ctrl_altering_stmt): Handle abnormal edges in CALL_EXPRs
        functions which receive nonlocal gotos.  Similarly for CALL_EXPRs
        functions which receive nonlocal gotos.  Similarly for CALL_EXPRs
        which occur on the RHS of a MODIFY_EXPR.
        which occur on the RHS of a MODIFY_EXPR.
        * tree.h (FORCED_LABEL, NONLOCAL_LABEL): New defines.
        * tree.h (FORCED_LABEL, NONLOCAL_LABEL): New defines.
        (FUNCTION_RECEIVES_NONLOCAL_GOTO): Likewise.
        (FUNCTION_RECEIVES_NONLOCAL_GOTO): Likewise.
2003-01-22  Frank Ch. Eigler  
2003-01-22  Frank Ch. Eigler  
        * doc/invoke.texi: Provide some information about -fmudflap.
        * doc/invoke.texi: Provide some information about -fmudflap.
        * tree-mudflap.c (mf_varname_tree): Conditionally invoke the C++
        * tree-mudflap.c (mf_varname_tree): Conditionally invoke the C++
        demangler in libiberty.  Reduce function printing verbosity.
        demangler in libiberty.  Reduce function printing verbosity.
        (mf_file_function_line_tree):  Reduce function printing verbosity.
        (mf_file_function_line_tree):  Reduce function printing verbosity.
        (mudflap_enqueue_decl): Use COMPLETE_TYPE_P to avoid trying to
        (mudflap_enqueue_decl): Use COMPLETE_TYPE_P to avoid trying to
        register (get size of) void-typed objects.
        register (get size of) void-typed objects.
2003-01-21  Jose Renau  
2003-01-21  Jose Renau  
        * tree-flow-inline.h (get_lineno): Return -1 for nodes without
        * tree-flow-inline.h (get_lineno): Return -1 for nodes without
        locus information.
        locus information.
        (get_filename): Return "???" for nodes without locus information.
        (get_filename): Return "???" for nodes without locus information.
2003-01-21  Jeff Law 
2003-01-21  Jeff Law 
        * tree-cfg.c (cleanup_switch_expr_graph): Wrap declaration of
        * tree-cfg.c (cleanup_switch_expr_graph): Wrap declaration of
        switch_expr with ENABLE_CHECKING block.
        switch_expr with ENABLE_CHECKING block.
        * c-simplify.c (is_last_stmt_of_scope): Wrap definition and
        * c-simplify.c (is_last_stmt_of_scope): Wrap definition and
        declaration inside and ENABLE_CHECKING block.
        declaration inside and ENABLE_CHECKING block.
2003-01-20  Frank Ch. Eigler  
2003-01-20  Frank Ch. Eigler  
        * tree-mudflap.c (mx_xfn_indirect_ref): Use new TREE_LOCUS field
        * tree-mudflap.c (mx_xfn_indirect_ref): Use new TREE_LOCUS field
        as a predicate for finding TREE_FILENAME etc.
        as a predicate for finding TREE_FILENAME etc.
2003-01-16  Daniel Berlin  
2003-01-16  Daniel Berlin  
        * Remove dead PRE code.
        * Remove dead PRE code.
        * tree-ssa-pre.c (tree_perform_ssapre): Collect left occurrences and
        * tree-ssa-pre.c (tree_perform_ssapre): Collect left occurrences and
        kills *after* finishing collecting all expressions.
        kills *after* finishing collecting all expressions.
2003-01-15  Jeff Law 
2003-01-15  Jeff Law 
        * Death to WFL nodes.
        * Death to WFL nodes.
        * c-aux-info.c: Replace DECL_SOURCE_FILE and DECL_SOURCE_LINE with
        * c-aux-info.c: Replace DECL_SOURCE_FILE and DECL_SOURCE_LINE with
        TREE_FILENAME and TREE_LINENO respectively when retrieving file
        TREE_FILENAME and TREE_LINENO respectively when retrieving file
        and line information.  Use TREE_LOCUS to copy existing information
        and line information.  Use TREE_LOCUS to copy existing information
        from one node to another.  Use annotate_with_file_line to add or
        from one node to another.  Use annotate_with_file_line to add or
        replace location information on a node.  Remove support for
        replace location information on a node.  Remove support for
        EXPR_WITH_FILE_LOCATION nodes.  Remove STRIP_WFL statements.
        EXPR_WITH_FILE_LOCATION nodes.  Remove STRIP_WFL statements.
        * c-common.c, c-parse.in, c-pretty-print.c, dbxout.c: Likewise.
        * c-common.c, c-parse.in, c-pretty-print.c, dbxout.c: Likewise.
        * diagnostic.c, dwarf2out.c, dwarfout.c: Likewise.
        * diagnostic.c, dwarf2out.c, dwarfout.c: Likewise.
        * except.c, integrate.c, stmt.c, tree-alias-common.c: Likewise.
        * except.c, integrate.c, stmt.c, tree-alias-common.c: Likewise.
        * tree-cfg.c, tree-dfa.c, tree-dump.c, tree-flow-inline.h: Likewise.
        * tree-cfg.c, tree-dfa.c, tree-dump.c, tree-flow-inline.h: Likewise.
        * tree-mudflap.c, tree-pretty-print.c, tree-simple.c: Likewise.
        * tree-mudflap.c, tree-pretty-print.c, tree-simple.c: Likewise.
        * tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-pre.c: Likewise.
        * tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-pre.c: Likewise.
        * varasm.c, xcoffout.c: Likewise.
        * varasm.c, xcoffout.c: Likewise.
        * config/alpha/alpha.c: Likewise.
        * config/alpha/alpha.c: Likewise.
        * config/mips/mips.c: Likewise.
        * config/mips/mips.c: Likewise.
        * c-decl.c: Likewise.
        * c-decl.c: Likewise.
        (duplicate_decls): Also copy TREE_LOCUS from olddecl to newdecl.
        (duplicate_decls): Also copy TREE_LOCUS from olddecl to newdecl.
        (finish_function): Save and restore the current filename and
        (finish_function): Save and restore the current filename and
        linenumber around genericizing of the function tree.
        linenumber around genericizing of the function tree.
        * c-simplify.c (c_simplify_stmt): Use annotate_all_with_file_line
        * c-simplify.c (c_simplify_stmt): Use annotate_all_with_file_line
        instead of wrap_all_with_wfl.  Remove STRIP_WFL statements.
        instead of wrap_all_with_wfl.  Remove STRIP_WFL statements.
        * expr.c (expand_expr): Emit line number notes for expressions
        * expr.c (expand_expr): Emit line number notes for expressions
        with attached file/line information.  Remove EXPR_WITH_FILE_LOCATION
        with attached file/line information.  Remove EXPR_WITH_FILE_LOCATION
        support.
        support.
        * gimplify.c: Kill STRIP_WFL statements.  Remove EXPR_WITH_FILE_LOCATION
        * gimplify.c: Kill STRIP_WFL statements.  Remove EXPR_WITH_FILE_LOCATION
        support.
        support.
        (simplify_expr_wfl): Kill.
        (simplify_expr_wfl): Kill.
        (annotate_stmt_with_file_line): Renamed from wrap_with_wfl.
        (annotate_stmt_with_file_line): Renamed from wrap_with_wfl.
        (annotate_all_with_file_line): Renamed from wrap_all_with_wfl.
        (annotate_all_with_file_line): Renamed from wrap_all_with_wfl.
        (simplify_expr): Save and restore the current file/line around
        (simplify_expr): Save and restore the current file/line around
        simplification of the given expression.  Add annotation to more
        simplification of the given expression.  Add annotation to more
        nodes created during simplification.
        nodes created during simplification.
        (simplify_self_mod_expr): Add file/line location to nodes we create.
        (simplify_self_mod_expr): Add file/line location to nodes we create.
        (get_initialized_tmp_var): Similarly.
        (get_initialized_tmp_var): Similarly.
        * old-tree-inline.c (expand_call_inline): Use annotate_with_file_line
        * old-tree-inline.c (expand_call_inline): Use annotate_with_file_line
        to add file/line information to nodes instead of wrapping them
        to add file/line information to nodes instead of wrapping them
        with EXPR_WITH_FILE_LOCATION nodes.
        with EXPR_WITH_FILE_LOCATION nodes.
        * print-tree.c: Use TREE_FILENAME and TREE_LINENO instead of
        * print-tree.c: Use TREE_FILENAME and TREE_LINENO instead of
        DECL_SOURCE_FILE and DECL_SOURCE_LINE respectively.  Remove
        DECL_SOURCE_FILE and DECL_SOURCE_LINE respectively.  Remove
        support for EXPR_WITH_FILE_LOCATION nodes.
        support for EXPR_WITH_FILE_LOCATION nodes.
        (print_node): Dump any file/line information that is attached to
        (print_node): Dump any file/line information that is attached to
        the given node.
        the given node.
        * tree-inline.c (walk_tree): Set lineno appropriately.
        * tree-inline.c (walk_tree): Set lineno appropriately.
        * tree-simple.h (annotate_all_with_file_line): Renamed from
        * tree-simple.h (annotate_all_with_file_line): Renamed from
        wrap_all_with_wfl.  Remove STRIP_WFL statements.
        wrap_all_with_wfl.  Remove STRIP_WFL statements.
        * tree.c (build_expr_wfl): Kill.
        * tree.c (build_expr_wfl): Kill.
        (make_node): Use annotate_with_file_line.
        (make_node): Use annotate_with_file_line.
        (annotate_with_file_line): New function.
        (annotate_with_file_line): New function.
        * tree.def: Remove EXPR_WITH_FILE_LOCATION.
        * tree.def: Remove EXPR_WITH_FILE_LOCATION.
        * tree.h (tree_common): Add locus field.  Remove references to
        * tree.h (tree_common): Add locus field.  Remove references to
        EXPR_WITH_FILE_LOCATION.
        EXPR_WITH_FILE_LOCATION.
        (tree_decl): Remove locus field.
        (tree_decl): Remove locus field.
        (STRIP_WFL, EXPR_WFL_*): Kill.
        (STRIP_WFL, EXPR_WFL_*): Kill.
        (DECL_SOURCE_LOCATION, DECL_SOURCE_FILE, DECL_SOURCE_LINE): Kill.
        (DECL_SOURCE_LOCATION, DECL_SOURCE_FILE, DECL_SOURCE_LINE): Kill.
        (TREE_LOCUS, TREE_FILENAME, TREE_LINENO): new.
        (TREE_LOCUS, TREE_FILENAME, TREE_LINENO): new.
        (annotate_with_file_line): Renamed from build_expr_wfl.
        (annotate_with_file_line): Renamed from build_expr_wfl.
        * objc/objc-act.c: Use TREE_FILENAME and TREE_LINENO to
        * objc/objc-act.c: Use TREE_FILENAME and TREE_LINENO to
        extract file/line information from tree nodes.
        extract file/line information from tree nodes.
2003-01-14  Frank Ch. Eigler  
2003-01-14  Frank Ch. Eigler  
        * tree-mudflap.c (mx_xfn_indirect_ref): Handle ARRAY_REF of
        * tree-mudflap.c (mx_xfn_indirect_ref): Handle ARRAY_REF of
        a COMPONENT_REF specially to avoid unnecessary checks.
        a COMPONENT_REF specially to avoid unnecessary checks.
2003-01-13  Frank Ch. Eigler  
2003-01-13  Frank Ch. Eigler  
        Front-end generalization.
        Front-end generalization.
        * Makefile.in (C_AND_OBJC_OBJS): Add c-mudflap.o and dependencies.
        * Makefile.in (C_AND_OBJC_OBJS): Add c-mudflap.o and dependencies.
        * tree-mudflap.c: Don't include "c-tree.h" any more.
        * tree-mudflap.c: Don't include "c-tree.h" any more.
        (mf_init_extern_trees): Divert to mflang_lookup_decl().
        (mf_init_extern_trees): Divert to mflang_lookup_decl().
        (mf_enqueue_register_call, mf_flush_enqueued_calls): Move and rename
        (mf_enqueue_register_call, mf_flush_enqueued_calls): Move and rename
        these functions.
        these functions.
        * tree-mudflap.h: Declare new mflang_* routines.
        * tree-mudflap.h: Declare new mflang_* routines.
        * c-mudflap.c: New file with C front-end mflang_* routines.
        * c-mudflap.c: New file with C front-end mflang_* routines.
        * tree-nomudflap.c (*): Call internal_error instead of abort.
        * tree-nomudflap.c (*): Call internal_error instead of abort.
2003-01-07  Steven Bosscher  
2003-01-07  Steven Bosscher  
        * Makefile.in (check-g95): New test target.
        * Makefile.in (check-g95): New test target.
        (check-f95): Alias for check-g95.
        (check-f95): Alias for check-g95.
2003-01-07  Diego Novillo  
2003-01-07  Diego Novillo  
        * tree-dump.c (dump_function_to_file): New function.
        * tree-dump.c (dump_function_to_file): New function.
        (dump_function): Call it.
        (dump_function): Call it.
        Convert argument declaration to K&R format.
        Convert argument declaration to K&R format.
        * tree-dump.h: Include splay-tree.h.
        * tree-dump.h: Include splay-tree.h.
        (dump_function_to_file): Declare.
        (dump_function_to_file): Declare.
        * tree-optimize.c (optimize_function_tree): Remove unused variables
        * tree-optimize.c (optimize_function_tree): Remove unused variables
        dump_file and dump_flags.
        dump_file and dump_flags.
        (dump_current_function): Remove.  Update all users by calling
        (dump_current_function): Remove.  Update all users by calling
        dump_function instead.
        dump_function instead.
        * tree.h (dump_current_function): Remove declaration.
        * tree.h (dump_current_function): Remove declaration.
        * Makefile.in (TREE_DUMP_H): Define.
        * Makefile.in (TREE_DUMP_H): Define.
        Update targets depending on tree-dump.h to depend on $(TREE_DUMP_H).
        Update targets depending on tree-dump.h to depend on $(TREE_DUMP_H).
        (tree-ssa-cp.o): Remove unused target.
        (tree-ssa-cp.o): Remove unused target.
        (tree-cfg.o): Add dependency on $(TREE_DUMP_H).
        (tree-cfg.o): Add dependency on $(TREE_DUMP_H).
        (tree-optimize.o): Likewise.
        (tree-optimize.o): Likewise.
        (tree-ssa-dce.o): Likewise.
        (tree-ssa-dce.o): Likewise.
        (tree-ssa-ccp.o): Likewise.
        (tree-ssa-ccp.o): Likewise.
        (tree-ssa-pre.o): Likewise.
        (tree-ssa-pre.o): Likewise.
2003-01-02  Daniel Berlin  
2003-01-02  Daniel Berlin  
        * tree-ssa-pre.c (rename_2): Fix a false matching condition.
        * tree-ssa-pre.c (rename_2): Fix a false matching condition.
        This is actually fallout from is_default_def change.
        This is actually fallout from is_default_def change.
2003-01-02  Jason Merrill  
2003-01-02  Jason Merrill  
        * c-simplify.c (c_genericize): Dump more info about the function.
        * c-simplify.c (c_genericize): Dump more info about the function.
        Use dump_function.
        Use dump_function.
        * tree-dump.c (dump_function): Move from cp/optimize.c.
        * tree-dump.c (dump_function): Move from cp/optimize.c.
        * tree-dump.h: Declare it.
        * tree-dump.h: Declare it.
        * gimplify.c (mostly_copy_tree_r): Remove unnecessary cases.
        * gimplify.c (mostly_copy_tree_r): Remove unnecessary cases.
        (unshare_expr): New fn.
        (unshare_expr): New fn.
        * tree-inline.c (mark_local_for_remap_r, unsave_r): New fns, adapted
        * tree-inline.c (mark_local_for_remap_r, unsave_r): New fns, adapted
        from C++ versions.
        from C++ versions.
        (lhd_unsave_expr_now): Likewise.
        (lhd_unsave_expr_now): Likewise.
        * tree.c (unsave_expr_now): Remove.
        * tree.c (unsave_expr_now): Remove.
        (unsafe_for_reeval): Labels and BIND_EXPRs are only somewhat unsafe.
        (unsafe_for_reeval): Labels and BIND_EXPRs are only somewhat unsafe.
        * gimplify.c (simplify_function_tree): Add an outer BIND_EXPR if
        * gimplify.c (simplify_function_tree): Add an outer BIND_EXPR if
        needed.
        needed.
        (voidify_wrapper_expr): Not static.  Abort if we try to voidify an
        (voidify_wrapper_expr): Not static.  Abort if we try to voidify an
        expression with TREE_ADDRESSABLE type.  Be clever with INDIRECT_REFs.
        expression with TREE_ADDRESSABLE type.  Be clever with INDIRECT_REFs.
        (foreach_stmt): Avoid redundant work.
        (foreach_stmt): Avoid redundant work.
        (create_tmp_var): Abort if we try to create a temp of ADDRESSABLE type.
        (create_tmp_var): Abort if we try to create a temp of ADDRESSABLE type.
        (simplify_expr): Simplify VTABLE_REF.
        (simplify_expr): Simplify VTABLE_REF.
        * c-simplify.c (simplify_decl_stmt): Ignore DECL_EXTERNAL decls.
        * c-simplify.c (simplify_decl_stmt): Ignore DECL_EXTERNAL decls.
        (simplify_stmt_expr): Fix thinko.
        (simplify_stmt_expr): Fix thinko.
        (simplify_block): Don't ignore partial scopes.
        (simplify_block): Don't ignore partial scopes.
        (simplify_condition): New fn.
        (simplify_condition): New fn.
        (simplify_c_loop, simplify_if_stmt, simplify_switch_stmt): Call it.
        (simplify_c_loop, simplify_if_stmt, simplify_switch_stmt): Call it.
        * expr.c (expand_expr) [BIND_EXPR]: Handle statics better.
        * expr.c (expand_expr) [BIND_EXPR]: Handle statics better.
        * tree-inline.c (remap_decl): Remap all decls.
        * tree-inline.c (remap_decl): Remap all decls.
        (declare_return_variable): Be clever with INDIRECT_REFs.
        (declare_return_variable): Be clever with INDIRECT_REFs.
        (expand_call_inline): If we have an explicit return slot, the inlined
        (expand_call_inline): If we have an explicit return slot, the inlined
        body is void.
        body is void.
        (walk_tree): Fix type handling.
        (walk_tree): Fix type handling.
        (copy_tree_r): Don't walk into decls.
        (copy_tree_r): Don't walk into decls.
        * tree-simple.c (is_simple_unary_expr): Handle VTABLE_REF.
        * tree-simple.c (is_simple_unary_expr): Handle VTABLE_REF.
        (is_simple_id): Allow RESULT_DECL.
        (is_simple_id): Allow RESULT_DECL.
        * tree-simple.h (gsi_stmt): Strip WFLs and NOPs.
        * tree-simple.h (gsi_stmt): Strip WFLs and NOPs.
        * gimplify.c (simplify_cond_expr): Handle void arms.  Add target parm.
        * gimplify.c (simplify_cond_expr): Handle void arms.  Add target parm.
        (simplify_modify_expr): Pass it.  Add special handling for COND_EXPR
        (simplify_modify_expr): Pass it.  Add special handling for COND_EXPR
        and CONSTRUCTOR (from Daniel Berlin).  Add want_value parm.
        and CONSTRUCTOR (from Daniel Berlin).  Add want_value parm.
        (simplify_expr): Pass new args. Loop sooner if language-specific
        (simplify_expr): Pass new args. Loop sooner if language-specific
        simplification happened.
        simplification happened.
        (simplify_return_expr): Pass the whole MODIFY_EXPR to simplify_expr.
        (simplify_return_expr): Pass the whole MODIFY_EXPR to simplify_expr.
        (simplify_target_expr): Simplify.
        (simplify_target_expr): Simplify.
        * tree.def (CATCH_EXPR, EH_FILTER_EXPR): New tree codes.
        * tree.def (CATCH_EXPR, EH_FILTER_EXPR): New tree codes.
        * except.c (expand_eh_handler): New fn.
        * except.c (expand_eh_handler): New fn.
        (expand_eh_region_end_allowed): If no types are allowed, hand off to
        (expand_eh_region_end_allowed): If no types are allowed, hand off to
        expand_eh_region_end_must_not_throw.
        expand_eh_region_end_must_not_throw.
        * except.h: Declare expand_eh_handler.
        * except.h: Declare expand_eh_handler.
        * expr.c (expand_expr) [TRY_CATCH_EXPR]: Use it.
        * expr.c (expand_expr) [TRY_CATCH_EXPR]: Use it.
        [CATCH_EXPR, EH_FILTER_EXPR]: New cases.
        [CATCH_EXPR, EH_FILTER_EXPR]: New cases.
        * gimplify.c (simplify_expr) [EXC_PTR_EXPR, CATCH_EXPR,
        * gimplify.c (simplify_expr) [EXC_PTR_EXPR, CATCH_EXPR,
        EH_FILTER_EXPR]: New cases.
        EH_FILTER_EXPR]: New cases.
        (gimple_build_eh_filter): New fn.
        (gimple_build_eh_filter): New fn.
        (maybe_protect_cleanup): New fn.
        (maybe_protect_cleanup): New fn.
        (gimple_push_cleanup): Call it.
        (gimple_push_cleanup): Call it.
        (simplify_cleanup_point_expr): Fix thinko.
        (simplify_cleanup_point_expr): Fix thinko.
        * c-simplify.c (simplify_cleanup): Call it.
        * c-simplify.c (simplify_cleanup): Call it.
        * tree-simple.h: Declare it.
        * tree-simple.h: Declare it.
        * Makefile.in (gimplify.o): Depend on except.h.
        * Makefile.in (gimplify.o): Depend on except.h.
        * tree.h (CATCH_TYPES, CATCH_BODY): New macros.
        * tree.h (CATCH_TYPES, CATCH_BODY): New macros.
        (EH_FILTER_TYPES, EH_FILTER_FAILURE): New macros.
        (EH_FILTER_TYPES, EH_FILTER_FAILURE): New macros.
        * tree-simple.c (is_simple_id): Allow EXC_PTR_EXPR.
        * tree-simple.c (is_simple_id): Allow EXC_PTR_EXPR.
        * c-pretty-print.c (dump_c_node) [CLEANUP_POINT_EXPR]: Support.
        * c-pretty-print.c (dump_c_node) [CLEANUP_POINT_EXPR]: Support.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        [CATCH_EXPR, EH_FILTER_EXPR, EXC_PTR_EXPR]: Support.
        [CATCH_EXPR, EH_FILTER_EXPR, EXC_PTR_EXPR]: Support.
        * c-pretty-print.c (NIY): Print operands.
        * c-pretty-print.c (NIY): Print operands.
        (dump_c_tree): Don't look at TREE_CHAIN if it doesn't matter.
        (dump_c_tree): Don't look at TREE_CHAIN if it doesn't matter.
        (dump_c_node) [ARRAY_TYPE]: Handle non-constant array bounds.
        (dump_c_node) [ARRAY_TYPE]: Handle non-constant array bounds.
        [CALL_EXPR]: Pass spc down.
        [CALL_EXPR]: Pass spc down.
        [VTABLE_REF]: Support.
        [VTABLE_REF]: Support.
        (op_prio) [TARGET_EXPR]: Support.
        (op_prio) [TARGET_EXPR]: Support.
        (print_call_name): Handle function pointers.
        (print_call_name): Handle function pointers.
        * tree-pretty-print.c: Likewise.
        * tree-pretty-print.c: Likewise.
2002-12-31  Steven Bosscher  
2002-12-31  Steven Bosscher  
        * gimplify.c (create_tmp_var_noc): Remove unused function.
        * gimplify.c (create_tmp_var_noc): Remove unused function.
        * tree-simple.h: Kill prototype.
        * tree-simple.h: Kill prototype.
2002-12-30  Diego Novillo  
2002-12-30  Diego Novillo  
        * tree-flow.h (tree_find_loops): Remove unused declaration.
        * tree-flow.h (tree_find_loops): Remove unused declaration.
2002-12-29  Daniel Berlin  
2002-12-29  Daniel Berlin  
        * toplev.c: Add flag_ip, enable by default at -O4+ (This is not
        * toplev.c: Add flag_ip, enable by default at -O4+ (This is not
        set in stone, and thus, not documented).
        set in stone, and thus, not documented).
        (decode_f_option): Add warning if andersen's PTA is selected but
        (decode_f_option): Add warning if andersen's PTA is selected but
        not compiled in.
        not compiled in.
        * flags.h: Add flag_ip.
        * flags.h: Add flag_ip.
        * tree-alias-ander.c: Fix todo.
        * tree-alias-ander.c: Fix todo.
        (andersen_function_call): Return 1 if we don't need to process
        (andersen_function_call): Return 1 if we don't need to process
        the function.
        the function.
        (ptset_map): New map, cache points-to sets.
        (ptset_map): New map, cache points-to sets.
        (andersen_op): We can do IP on all statics without help.
        (andersen_op): We can do IP on all statics without help.
        (andersen_init): Only init once if we are doing ip analysis.
        (andersen_init): Only init once if we are doing ip analysis.
        (andersen_cleanup): Don't cleanup if we need the info for ip.
        (andersen_cleanup): Don't cleanup if we need the info for ip.
        (andersen_add_var): Clear points-to set if it exists already.
        (andersen_add_var): Clear points-to set if it exists already.
        (andersen_add_var_same): Ditto.
        (andersen_add_var_same): Ditto.
        (andersen_function_call): We can do interprocedural analysis on
        (andersen_function_call): We can do interprocedural analysis on
        statics.
        statics.
        (andersen_may_alias): Cache points-to sets.
        (andersen_may_alias): Cache points-to sets.
        * c-decl.c (c_expand_body): Don't throw away tree if flag_ip is
        * c-decl.c (c_expand_body): Don't throw away tree if flag_ip is
        on, even if they are uninlinable, they may be wanted for ip
        on, even if they are uninlinable, they may be wanted for ip
        optimizations.
        optimizations.
        * tree-alias-common.c (get_values_from_constructor): New
        * tree-alias-common.c (get_values_from_constructor): New
        function to collect alias_typevars from constructors.
        function to collect alias_typevars from constructors.
        (alias_annot): Fix where the GTY is so gengtype picks it up.
        (alias_annot): Fix where the GTY is so gengtype picks it up.
        (intra_function_call): Ignore non-pointers for global var
        (intra_function_call): Ignore non-pointers for global var
        assignment. What arguments point to can now point to a global var
        assignment. What arguments point to can now point to a global var
        as well.
        as well.
        (find_func_aliases): We need to handle decl's with initials as
        (find_func_aliases): We need to handle decl's with initials as
        well.
        well.
        Only call intra_function_call if we have to.
        Only call intra_function_call if we have to.
        Handle constructors.
        Handle constructors.
        (create_fun_alias_var): Incoming pointer arguments could be
        (create_fun_alias_var): Incoming pointer arguments could be
        pointing to a global var, unless this is a static function and we
        pointing to a global var, unless this is a static function and we
        are doing interprocedural analysis.
        are doing interprocedural analysis.
        (create_alias_vars): Take an fndecl argument, and use it.
        (create_alias_vars): Take an fndecl argument, and use it.
        (init_alias_vars): Handle ip_partial as well.
        (init_alias_vars): Handle ip_partial as well.
        (ptr_may_alias_var): Simplify, fix.
        (ptr_may_alias_var): Simplify, fix.
        * tree-alias-common.h (tree_alias_ops): function_call now returns
        * tree-alias-common.h (tree_alias_ops): function_call now returns
        an int, and we have an extra member named ip_partial.
        an int, and we have an extra member named ip_partial.
        * tree-alias-steen.c (steen_ops): We can't do ip_partial.
        * tree-alias-steen.c (steen_ops): We can't do ip_partial.
        (steen_function_call): Update definition and return 1.
        (steen_function_call): Update definition and return 1.
        * tree-dfa.c (compute_may_aliases): Call create_alias_vars with
        * tree-dfa.c (compute_may_aliases): Call create_alias_vars with
        current_function_decl.
        current_function_decl.
        * tree-flow.h (create_alias_vars): Remove proto from here, it's
        * tree-flow.h (create_alias_vars): Remove proto from here, it's
        in tree-alias-common.h.
        in tree-alias-common.h.
        (tree_perform_ssapre): Take a tree, like the other optimizers.
        (tree_perform_ssapre): Take a tree, like the other optimizers.
        * tree-optimize.c (optimize_function_tree): Call
        * tree-optimize.c (optimize_function_tree): Call
        tree_perform_ssapre with a tree.
        tree_perform_ssapre with a tree.
        * tree-ssa-pre.c: Remove dead, #if 0'd code.
        * tree-ssa-pre.c: Remove dead, #if 0'd code.
        (tree_perform_ssapre): Use passed in tree.
        (tree_perform_ssapre): Use passed in tree.
2002-12-23  Frank Ch. Eigler  
2002-12-23  Frank Ch. Eigler  
        * tree-mudflap.c (mf_decl_cache_locals, mf_decl_clear_locals): New
        * tree-mudflap.c (mf_decl_cache_locals, mf_decl_clear_locals): New
        functions.
        functions.
        (mudflap_c_function): Call them before/after basic transforms.
        (mudflap_c_function): Call them before/after basic transforms.
        (mf_cache_shift_decl_l, ..._mask_l): New variables to track local
        (mf_cache_shift_decl_l, ..._mask_l): New variables to track local
        VAR_DECL shadows of cache parameters.
        VAR_DECL shadows of cache parameters.
        (mf_build_check_statement_for): Use and update them.
        (mf_build_check_statement_for): Use and update them.
2002-12-23  Frank Ch. Eigler  
2002-12-23  Frank Ch. Eigler  
        * tree-mudflap.c (mx_register_decls): Trust incoming TREE_ADDRESSABLE
        * tree-mudflap.c (mx_register_decls): Trust incoming TREE_ADDRESSABLE
        instead of own timetaking analysis.
        instead of own timetaking analysis.
        (mf_find_addrof, mx_xfn_find_addrof): Removed functions.
        (mf_find_addrof, mx_xfn_find_addrof): Removed functions.
2002-12-23  Steven Bosscher 
2002-12-23  Steven Bosscher 
        * tree-dfa.c: Add doxygen markers in comments.
        * tree-dfa.c: Add doxygen markers in comments.
2002-12-22  Diego Novillo  
2002-12-22  Diego Novillo  
        * gimplify.c: Undo the following change:
        * gimplify.c: Undo the following change:
            2002-12-11  Diego Novillo  
            2002-12-11  Diego Novillo  
                * gimplify.c (simplify_return_expr): return statements should
                * gimplify.c (simplify_return_expr): return statements should
                  only have a GIMPLE value as argument.
                  only have a GIMPLE value as argument.
        * tree-simple.c: Fix grammar for return statements.
        * tree-simple.c: Fix grammar for return statements.
2002-12-20  Frank Ch. Eigler  
2002-12-20  Frank Ch. Eigler  
        * tree-mudflap.c (mf_init_extern_trees): Rewrite last change
        * tree-mudflap.c (mf_init_extern_trees): Rewrite last change
        without using statement-expressions.
        without using statement-expressions.
2002-12-19  Diego Novillo  
2002-12-19  Diego Novillo  
        * tree-cfg.c (build_tree_cfg): Make sure that TV_TREE_CFG
        * tree-cfg.c (build_tree_cfg): Make sure that TV_TREE_CFG
        is popped properly.
        is popped properly.
2002-12-19  Frank Ch. Eigler  
2002-12-19  Frank Ch. Eigler  
        * tree-mudflap.c (mf_init_extern_trees): Abort gracefully if
        * tree-mudflap.c (mf_init_extern_trees): Abort gracefully if
         was not included.
         was not included.
        (*): Correct some minor compiler warnings elsewhere.
        (*): Correct some minor compiler warnings elsewhere.
2002-12-18  Diego Novillo  
2002-12-18  Diego Novillo  
        * configure: Regenerate with autoconf 2.13.
        * configure: Regenerate with autoconf 2.13.
2002-12-17  Ben Elliston  
2002-12-17  Ben Elliston  
        * tree-optimize.c (optimize_function_tree): Temporarily
        * tree-optimize.c (optimize_function_tree): Temporarily
        disable SSA optimizations if -fmudflap is present.
        disable SSA optimizations if -fmudflap is present.
2002-12-16  Ben Elliston  
2002-12-16  Ben Elliston  
        * tree-mudflap.c (mx_flag): Assert that the tree node is valid.
        * tree-mudflap.c (mx_flag): Assert that the tree node is valid.
2002-12-14  Jason Merrill  
2002-12-14  Jason Merrill  
        * tree-dump.c (dump_files): Add .generic.  Move .inlined after it.
        * tree-dump.c (dump_files): Add .generic.  Move .inlined after it.
        * tree.h (tree_dump_index): Likewise.
        * tree.h (tree_dump_index): Likewise.
        * c-simplify.c (c_genericize): Emit original and generic dumps here.
        * c-simplify.c (c_genericize): Emit original and generic dumps here.
        * c-decl.c (c_expand_body): Not here.
        * c-decl.c (c_expand_body): Not here.
2002-12-13  Ben Elliston  
2002-12-13  Ben Elliston  
        * tree-dfa.c (find_refs_in_expr): Terminate comment.
        * tree-dfa.c (find_refs_in_expr): Terminate comment.
2002-12-12  Steven Bosscher 
2002-12-12  Steven Bosscher 
        * tree-cfg.c: Update doxygen documentation.
        * tree-cfg.c: Update doxygen documentation.
        * tree-dfa.c: Add doxygen documentation.
        * tree-dfa.c: Add doxygen documentation.
2002-12-11  Steven Bosscher 
2002-12-11  Steven Bosscher 
        * tree-cfg.c: Add doxygen markers in comments.
        * tree-cfg.c: Add doxygen markers in comments.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
2002-12-11  Diego Novillo  
2002-12-11  Diego Novillo  
        * gimplify.c (simplify_return_expr): return statements should only
        * gimplify.c (simplify_return_expr): return statements should only
        have a GIMPLE value as argument.
        have a GIMPLE value as argument.
        * tree-cfg.c (call_expr_flags): New function.
        * tree-cfg.c (call_expr_flags): New function.
        (is_ctrl_altering_stmt): Call it.
        (is_ctrl_altering_stmt): Call it.
        * tree-flow.h (extern): Declare it.
        * tree-flow.h (extern): Declare it.
2002-12-06  Diego Novillo  
2002-12-06  Diego Novillo  
        * tree-cfg.c (make_goto_expr_edges): Temporary hack to prevent
        * tree-cfg.c (make_goto_expr_edges): Temporary hack to prevent
        removing blocks with nonlocal labels.
        removing blocks with nonlocal labels.
        (is_nonlocal_label_block): Return true if DECL_NONLOCAL is set for
        (is_nonlocal_label_block): Return true if DECL_NONLOCAL is set for
        the label.
        the label.
        * tree-dfa.c (alias_leaders): New local array.
        * tree-dfa.c (alias_leaders): New local array.
        (num_alias_leaders): New local variable.
        (num_alias_leaders): New local variable.
        (find_alias_leader): New local function.
        (find_alias_leader): New local function.
        (may_access_global_mem): New local function.
        (may_access_global_mem): New local function.
        (find_may_aliases_for): Call them.
        (find_may_aliases_for): Call them.
        (compute_may_aliases): Allocate and deallocate alias_leaders.
        (compute_may_aliases): Allocate and deallocate alias_leaders.
        Show alias information if -fdump-tree-...-alias flag is given.
        Show alias information if -fdump-tree-...-alias flag is given.
        (may_alias_p): Return true if both variables are the same.
        (may_alias_p): Return true if both variables are the same.
        (find_refs_in_expr): Strip WFL and NOPs from the parent statement.
        (find_refs_in_expr): Strip WFL and NOPs from the parent statement.
        If a pointer relocation is due to a function call, assignment from
        If a pointer relocation is due to a function call, assignment from
        a global or a function argument, mark the pointer as a may-alias
        a global or a function argument, mark the pointer as a may-alias
        for global storage.
        for global storage.
        (dump_referenced_vars): Reformat output.
        (dump_referenced_vars): Reformat output.
        (dump_variable): Likewise.
        (dump_variable): Likewise.
        * tree-dump.c (dump_option_value_info): Add entry for TDF_ALIAS.
        * tree-dump.c (dump_option_value_info): Add entry for TDF_ALIAS.
        * tree.h (TDF_ALIAS): Define.
        * tree.h (TDF_ALIAS): Define.
        * doc/invoke.texi: Document new flag.
        * doc/invoke.texi: Document new flag.
        * tree-flow-inline.h (may_alias_global_mem_p): New function.
        * tree-flow-inline.h (may_alias_global_mem_p): New function.
        * tree-flow.h (enum tree_flags): Add value TF_MAY_ALIAS_GLOBAL_MEM.
        * tree-flow.h (enum tree_flags): Add value TF_MAY_ALIAS_GLOBAL_MEM.
        (may_alias_global_mem_p): Declare.
        (may_alias_global_mem_p): Declare.
        * tree-simple.c (get_base_symbol): Return NULL_TREE, not NULL.
        * tree-simple.c (get_base_symbol): Return NULL_TREE, not NULL.
        * tree-ssa-ccp.c (tree_ssa_ccp): Remove unused variable.
        * tree-ssa-ccp.c (tree_ssa_ccp): Remove unused variable.
        * tree-ssa-dce.c (need_to_preserve_store): Call
        * tree-ssa-dce.c (need_to_preserve_store): Call
        decl_function_context instead of DECL_CONTEXT.
        decl_function_context instead of DECL_CONTEXT.
        If the symbol may alias global memory, return nonzero.
        If the symbol may alias global memory, return nonzero.
        * tree-ssa.c (dump_reaching_defs): Reformat output.
        * tree-ssa.c (dump_reaching_defs): Reformat output.
        (set_currdef_for): Walk the alias leader chain, setting CURRDEF for
        (set_currdef_for): Walk the alias leader chain, setting CURRDEF for
        all the alias sets that may be affected by the definition.
        all the alias sets that may be affected by the definition.
2002-12-06  Daniel Berlin  
2002-12-06  Daniel Berlin  
        * tree-dfa.c (may_alias_p): Fix global variables and points-to.
        * tree-dfa.c (may_alias_p): Fix global variables and points-to.
2002-12-03  Daniel Berlin  
2002-12-03  Daniel Berlin  
        * tree-ssa.c (delete_tree_ssa):  Move call to delete_alias_vars
        * tree-ssa.c (delete_tree_ssa):  Move call to delete_alias_vars
        above resetting num_referenced_vars.
        above resetting num_referenced_vars.
2002-12-03  Diego Novillo  
2002-12-03  Diego Novillo  
        * Makefile.in: Add dependencies on $(TM_H) and coretypes.h for the
        * Makefile.in: Add dependencies on $(TM_H) and coretypes.h for the
        files mentioned below.
        files mentioned below.
        * old-tree-inline.c: Include tm.h and coretypes.h.
        * old-tree-inline.c: Include tm.h and coretypes.h.
        * c-pretty-print.c: Likewise.
        * c-pretty-print.c: Likewise.
        * disjoint-set.c: Likewise.
        * disjoint-set.c: Likewise.
        * tree-alias-ecr.c: Likewise.
        * tree-alias-ecr.c: Likewise.
        * tree-alias-type.c: Likewise.
        * tree-alias-type.c: Likewise.
        * tree-alias-ander.c: Likewise.
        * tree-alias-ander.c: Likewise.
        * tree-alias-steen.c: Likewise.
        * tree-alias-steen.c: Likewise.
        * tree-alias-common.c: Likewise.
        * tree-alias-common.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * c-simplify.c: Likewise.
        * c-simplify.c: Likewise.
        * gimplify.c: Likewise.
        * gimplify.c: Likewise.
        * tree-browser.c: Likewise.
        * tree-browser.c: Likewise.
        * simple-break-elim.c: Likewise.
        * simple-break-elim.c: Likewise.
        * simple-goto-elim.c: Likewise.
        * simple-goto-elim.c: Likewise.
        * tree-dchain.c: Likewise.
        * tree-dchain.c: Likewise.
        * c-call-graph.c: Likewise.
        * c-call-graph.c: Likewise.
        * tree-simple.c: Likewise.
        * tree-simple.c: Likewise.
        * tree-nomudflap.c: Likewise.
        * tree-nomudflap.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-pretty-print.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * dependence.c: Likewise.
        * dependence.c: Likewise.
        * tree-mudflap.c: Likewise
        * tree-mudflap.c: Likewise
        (mx_xfn_indirect_ref): Use size_type_node instead of c_size_type_node.
        (mx_xfn_indirect_ref): Use size_type_node instead of c_size_type_node.
2002-12-03  Diego Novillo  
2002-12-03  Diego Novillo  
        * tree-dfa.c: Undo this change that causes bootstrap
        * tree-dfa.c: Undo this change that causes bootstrap
        failures:
        failures:
        2002-12-02  Diego Novillo  
        2002-12-02  Diego Novillo  
                * tree-dfa.c (may_alias_p): Artificial variables
                * tree-dfa.c (may_alias_p): Artificial variables
                can also be aliased.
                can also be aliased.
2002-12-03  Andreas Jaeger  
2002-12-03  Andreas Jaeger  
        * tree-simple.c (right_assocify_expr): Remove unused variable.
        * tree-simple.c (right_assocify_expr): Remove unused variable.
2002-12-02  Andrew MacLeod  
2002-12-02  Andrew MacLeod  
        * gimplify.c (simplify_cleanup_point_expr): gsi_stmt can return NULL,
        * gimplify.c (simplify_cleanup_point_expr): gsi_stmt can return NULL,
        use gsi_end.
        use gsi_end.
        * tree-cfg.c (make_blocks): Use gsi_end, gsi_stmt can return NULL. Set
        * tree-cfg.c (make_blocks): Use gsi_end, gsi_stmt can return NULL. Set
        basic_block for empty_stmt_node containers.
        basic_block for empty_stmt_node containers.
        (make_edges): Stmt's can be NULL.
        (make_edges): Stmt's can be NULL.
        (make_ctrl_stmt_edges, make_exit_edges, make_loop_expr_edges,
        (make_ctrl_stmt_edges, make_exit_edges, make_loop_expr_edges,
        make_cond_expr_edges, make_goto_expr_edges, is_nonlocal_label_block,
        make_cond_expr_edges, make_goto_expr_edges, is_nonlocal_label_block,
        block_invalidates_loop, cleanup_control_flow, cleanup_cond_expr_graph,
        block_invalidates_loop, cleanup_control_flow, cleanup_cond_expr_graph,
        cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
        cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
        find_taken_edge, tree_cfg2dot, successor_block, is_latch_block,
        find_taken_edge, tree_cfg2dot, successor_block, is_latch_block,
        switch_parent, first_stmt, last_stmt): Check for first_stmt() or
        switch_parent, first_stmt, last_stmt): Check for first_stmt() or
        last_stmt() returning NULL.
        last_stmt() returning NULL.
        (remove_tree_bb, first_exec_stmt): Use gsi_end.
        (remove_tree_bb, first_exec_stmt): Use gsi_end.
        (last_stmt_ptr): Iterate to find last execuatbel stmt_ptr in a block.
        (last_stmt_ptr): Iterate to find last execuatbel stmt_ptr in a block.
        (gsi_start_bb): Return first non-empty stmt, if there is one.
        (gsi_start_bb): Return first non-empty stmt, if there is one.
        (set_bb_for_stmt): Don't decend into an empty_stmt_node.
        (set_bb_for_stmt): Don't decend into an empty_stmt_node.
        * tree-dfa.c (find_tree_refs): Use gsi_end.
        * tree-dfa.c (find_tree_refs): Use gsi_end.
        (collect_dfa_stats): Use gsi_end_bb.
        (collect_dfa_stats): Use gsi_end_bb.
        * tree-flow-inline.h (gsi_step_bb): split.
        * tree-flow-inline.h (gsi_step_bb): split.
        (gsi_step_in_bb): gsi_step with explicit bb specified. Never return
        (gsi_step_in_bb): gsi_step with explicit bb specified. Never return
        empty_stmt_node.
        empty_stmt_node.
        (gsi_start_bb): Move to tree-cfg.c.
        (gsi_start_bb): Move to tree-cfg.c.
        (gsi_end_bb): New. Have we reached the end of a basic block.
        (gsi_end_bb): New. Have we reached the end of a basic block.
        * tree-flow.h (gsi_start_bb): Make external.
        * tree-flow.h (gsi_start_bb): Make external.
        (gsi_end_bb, gsi_step_in_bb): New prototypes.
        (gsi_end_bb, gsi_step_in_bb): New prototypes.
        * tree-simple.h (gsi_end): renamed from gsi_after_end.
        * tree-simple.h (gsi_end): renamed from gsi_after_end.
        (gsi_stmt): Return NULL if stmt is an empty_stmt_node or error mark.
        (gsi_stmt): Return NULL if stmt is an empty_stmt_node or error mark.
        * tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use gsi_end.
        * tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use gsi_end.
        * tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
        * tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
        remove_dead_stmts): Use gsi_end_bb.
        remove_dead_stmts): Use gsi_end_bb.
        (process_worklist): Check for NULL last_stmt.
        (process_worklist): Check for NULL last_stmt.
        * tree-ssa-pre.c (finalize_1): Use gsi_end_bb, gsi_stmt can be NULL.
        * tree-ssa-pre.c (finalize_1): Use gsi_end_bb, gsi_stmt can be NULL.
2002-12-02  Diego Novillo  
2002-12-02  Diego Novillo  
        * tree-dfa.c (dump_ref): Display '' for NULL references.
        * tree-dfa.c (dump_ref): Display '' for NULL references.
        (dump_phi_args): Handle NULL arguments.
        (dump_phi_args): Handle NULL arguments.
        (may_alias_p): Artificial variables can also be aliased.
        (may_alias_p): Artificial variables can also be aliased.
2002-12-02  Daniel Berlin 
2002-12-02  Daniel Berlin 
        * tree-ssa-pre.c (okay_injuring_def): inj could be null.
        * tree-ssa-pre.c (okay_injuring_def): inj could be null.
        (get_operand):  Use instead of special casing INDIRECT_REF and
        (get_operand):  Use instead of special casing INDIRECT_REF and
        COMPONENT_REF everywhere.
        COMPONENT_REF everywhere.
        (names_match_p): Fix.
        (names_match_p): Fix.
        (defs_match_p): Ignore partial uses.
        (defs_match_p): Ignore partial uses.
        (rename_2): Fix non-matching condition.
        (rename_2): Fix non-matching condition.
        (update_old_new): Update the kills and lefts arrays.
        (update_old_new): Update the kills and lefts arrays.
        (finalize_1): Set the bb for the new statement.
        (finalize_1): Set the bb for the new statement.
        (update_ssa_for_new_use): Ditto.
        (update_ssa_for_new_use): Ditto.
        (code_motion): Ditto.
        (code_motion): Ditto.
        (call_modifies_slot): Handle function pointers (where we end up
        (call_modifies_slot): Handle function pointers (where we end up
        with a _DECL as our argument).
        with a _DECL as our argument).
        (pre_part_1_trav): Update the kills and lefts arrays.
        (pre_part_1_trav): Update the kills and lefts arrays.
        Just use TREE_TYPE (ei->expr) for type of expression.
        Just use TREE_TYPE (ei->expr) for type of expression.
        (add_left_occ): New helper function.
        (add_left_occ): New helper function.
        (process_left_occs_and_kills): Add other cases we need to handle.
        (process_left_occs_and_kills): Add other cases we need to handle.
        (tree_perform_ssapre): Add new processed array, since for left
        (tree_perform_ssapre): Add new processed array, since for left
        occurrences and kills, we need to process *all* statements, not
        occurrences and kills, we need to process *all* statements, not
        just ones we might consider candiates for PRE.
        just ones we might consider candiates for PRE.
2002-12-02  Diego Novillo  
2002-12-02  Diego Novillo  
        * tree-dfa.c (find_refs_in_expr): Look for references in
        * tree-dfa.c (find_refs_in_expr): Look for references in
        VA_ARG_EXPR nodes.
        VA_ARG_EXPR nodes.
2002-12-01  Diego Novillo  
2002-12-01  Diego Novillo  
        * tree-optimize.c (optimize_function_tree): Undo
        * tree-optimize.c (optimize_function_tree): Undo
        inadvertent change in previous commit.
        inadvertent change in previous commit.
2002-12-01  Diego Novillo  
2002-12-01  Diego Novillo  
        * fold-const.c (operand_equal_p): Check for NULL TREE_TYPEs.
        * fold-const.c (operand_equal_p): Check for NULL TREE_TYPEs.
        * tree-cfg.c (remove_stmt): Call remove_ref.
        * tree-cfg.c (remove_stmt): Call remove_ref.
        (disconnect_unreachable_case_labels): Do not disconnect the edge
        (disconnect_unreachable_case_labels): Do not disconnect the edge
        going to the block holding the BIND_EXPR node for the switch()
        going to the block holding the BIND_EXPR node for the switch()
        body.
        body.
        (dump_tree_cfg): Call dump_current_function.
        (dump_tree_cfg): Call dump_current_function.
        * Makefile.in (tree-dfa.o): Depend on convert.h.
        * Makefile.in (tree-dfa.o): Depend on convert.h.
        * tree-dfa.c: Include convert.h.
        * tree-dfa.c: Include convert.h.
        (remove_def): New local function.
        (remove_def): New local function.
        (reset_def_def_links): New local function.
        (reset_def_def_links): New local function.
        (replace_phi_arg_with): New local function.
        (replace_phi_arg_with): New local function.
        (replace_ref_with): New function.
        (replace_ref_with): New function.
        (try_replace_ref_with): Rename from replace_ref_in.
        (try_replace_ref_with): Rename from replace_ref_in.
        Also look for V_USE references on the LHS of assignments.
        Also look for V_USE references on the LHS of assignments.
        When replacing the callee of a CALL_EXPR, make sure that the type
        When replacing the callee of a CALL_EXPR, make sure that the type
        of the new callee is compatible with the old one.
        of the new callee is compatible with the old one.
        (replace_ref_r): Call operand_equal_p.
        (replace_ref_r): Call operand_equal_p.
        (remove_ref): New function.
        (remove_ref): New function.
        (same_var_p): New function.
        (same_var_p): New function.
        (dump_referenced_vars): Add new flag DETAILS.  Update all users.
        (dump_referenced_vars): Add new flag DETAILS.  Update all users.
        (debug_referenced_vars): Likewise.
        (debug_referenced_vars): Likewise.
        * tree-ssa.c (dump_reaching_defs): Change output format.
        * tree-ssa.c (dump_reaching_defs): Change output format.
        (set_ssa_links): Don't set def-def links for PHI nodes.
        (set_ssa_links): Don't set def-def links for PHI nodes.
        * tree-ssa-ccp.c (replace_uses_in): Add new argument COMMIT.
        * tree-ssa-ccp.c (replace_uses_in): Add new argument COMMIT.
        Update all users.
        Update all users.
        * tree-optimize.c (dump_current_function): New function.
        * tree-optimize.c (dump_current_function): New function.
        (optimize_function_tree): Call it.
        (optimize_function_tree): Call it.
        * tree.h (dump_current_function): Declare.
        * tree.h (dump_current_function): Declare.
        * c-decl.c (c_expand_body): Call dump_current_function.
        * c-decl.c (c_expand_body): Call dump_current_function.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Likewise.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Likewise.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
        * tree-ssa.c (build_tree_ssa): Likewise.
        * tree-ssa.c (build_tree_ssa): Likewise.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        Dump variables and reaching definitions if TDF_DETAILS is set.
        Dump variables and reaching definitions if TDF_DETAILS is set.
        * tree-pretty-print.c (print_call_name): Call dump_generic_node for
        * tree-pretty-print.c (print_call_name): Call dump_generic_node for
        NOP_EXPR operands.
        NOP_EXPR operands.
        * tree-ssa-pre.c: Don't include c-common.h nor c-tree.h
        * tree-ssa-pre.c: Don't include c-common.h nor c-tree.h
        Replace calls to build_modify_expr with build everywhere.
        Replace calls to build_modify_expr with build everywhere.
        Replace calls to deep_copy_node with copy_node_r everywhere.
        Replace calls to deep_copy_node with copy_node_r everywhere.
2002-11-29  Andreas Jaeger  
2002-11-29  Andreas Jaeger  
        * c-call-graph.c (construct_call_graph): Fix format.
        * c-call-graph.c (construct_call_graph): Fix format.
        * tree-alias-ander.c: Declare print_out_result.
        * tree-alias-ander.c: Declare print_out_result.
        * tree-ssa-pre.c: Declare is_on_lhs and call_modifies_slot.
        * tree-ssa-pre.c: Declare is_on_lhs and call_modifies_slot.
        * tree.h: Declare expand_asm_expr and add_var_to_bind_expr.
        * tree.h: Declare expand_asm_expr and add_var_to_bind_expr.
        * tree-inline.c: Declare remap_decls.
        * tree-inline.c: Declare remap_decls.
2002-11-28  Daniel Berlin  
2002-11-28  Daniel Berlin  
        * tree-alias-common.h: Start adding doxygen docs.
        * tree-alias-common.h: Start adding doxygen docs.
        * tree-alias-common.c: Ditto
        * tree-alias-common.c: Ditto
2002-11-28  Daniel Berlin  
2002-11-28  Daniel Berlin  
        * tree-alias-ander.c: Convert debug defines and ifdefs into
        * tree-alias-ander.c: Convert debug defines and ifdefs into
        dump_file use.
        dump_file use.
        * tree.h: Add TDI_pta.
        * tree.h: Add TDI_pta.
        * tree-dump.c: Add dump-tree-pta and TDI_pta.
        * tree-dump.c: Add dump-tree-pta and TDI_pta.
2002-11-28  Diego Novillo  
2002-11-28  Diego Novillo  
        * Makefile.in (tree-ssa-pre.o, tree-cfg.o, gimplify.o, tree-ssa-dce.o,
        * Makefile.in (tree-ssa-pre.o, tree-cfg.o, gimplify.o, tree-ssa-dce.o,
        tree-ssa-ccp.o): Add dependency on $(TIMEVAR_H).
        tree-ssa-ccp.o): Add dependency on $(TIMEVAR_H).
        * timevar.def (TV_TREE_GIMPLIFY, TV_TREE_MAY_ALIAS,
        * timevar.def (TV_TREE_GIMPLIFY, TV_TREE_MAY_ALIAS,
        TV_TREE_INSERT_PHI_NODES, TV_TREE_BUILD_FUD_CHAINS, TV_TREE_RDEFS):
        TV_TREE_INSERT_PHI_NODES, TV_TREE_BUILD_FUD_CHAINS, TV_TREE_RDEFS):
        New timers.
        New timers.
        (TV_TREE_SSA): Remove.
        (TV_TREE_SSA): Remove.
        (TV_INTEGRATION, TV_EXPAND): Switch order.
        (TV_INTEGRATION, TV_EXPAND): Switch order.
        * c-decl.c (c_expand_body): Pop TV_EXPAND before running the tree
        * c-decl.c (c_expand_body): Pop TV_EXPAND before running the tree
        optimizers.
        optimizers.
        * gimplify.c (simplify_function_tree): Push/pop TV_TREE_GIMPLIFY.
        * gimplify.c (simplify_function_tree): Push/pop TV_TREE_GIMPLIFY.
        * tree-cfg.c (build_tree_cfg): Push/pop TV_TREE_CFG.
        * tree-cfg.c (build_tree_cfg): Push/pop TV_TREE_CFG.
        * tree-dfa.c (compute_may_aliases): Push/pop TV_TREE_MAY_ALIAS.
        * tree-dfa.c (compute_may_aliases): Push/pop TV_TREE_MAY_ALIAS.
        * tree-ssa-ccp.c (tree_ssa_ccp): Push/pop TV_TREE_CCP.
        * tree-ssa-ccp.c (tree_ssa_ccp): Push/pop TV_TREE_CCP.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Push/pop
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Push/pop
        TV_TREE_DCE.
        TV_TREE_DCE.
        Call compute_reaching_defs.
        Call compute_reaching_defs.
        Remove debugging dumps before DCE.
        Remove debugging dumps before DCE.
        * tree-ssa-pre.c (tree_perform_ssapre): Push/pop TV_TREE_PRE.
        * tree-ssa-pre.c (tree_perform_ssapre): Push/pop TV_TREE_PRE.
        * tree-ssa.c (build_tree_ssa): Don't call compute_reaching_defs.
        * tree-ssa.c (build_tree_ssa): Don't call compute_reaching_defs.
        Don't call dump_reaching_defs.
        Don't call dump_reaching_defs.
        (insert_phi_nodes): Push/pop TV_TREE_INSERT_PHI_NODES.
        (insert_phi_nodes): Push/pop TV_TREE_INSERT_PHI_NODES.
        (build_fud_chains): Push/pop TV_TREE_BUILD_FUD_CHAINS.
        (build_fud_chains): Push/pop TV_TREE_BUILD_FUD_CHAINS.
        (compute_reaching_defs): Push/pop TV_TREE_RDEFS.
        (compute_reaching_defs): Push/pop TV_TREE_RDEFS.
        Call dump_reaching_defs.
        Call dump_reaching_defs.
        * tree-optimize.c (optimize_function_tree): Remove calls to
        * tree-optimize.c (optimize_function_tree): Remove calls to
        timevar_push and timevar_pop.
        timevar_push and timevar_pop.
2002-11-28  Diego Novillo  
2002-11-28  Diego Novillo  
        * Makefile.in (tree-ssa.o): Add dependency on $(TIMEVAR_H) and
        * Makefile.in (tree-ssa.o): Add dependency on $(TIMEVAR_H) and
        tree-alias-common.h.
        tree-alias-common.h.
        (tree-dfa.o): Likewise.
        (tree-dfa.o): Likewise.
        (tree-optimize.o): Add dependency on $(TIMEVAR_H).
        (tree-optimize.o): Add dependency on $(TIMEVAR_H).
        * tree-dfa.c (compute_may_aliases): Move call to delete_alias_vars
        * tree-dfa.c (compute_may_aliases): Move call to delete_alias_vars
        * tree-ssa.c (delete_tree_ssa): ... here.
        * tree-ssa.c (delete_tree_ssa): ... here.
2002-11-27  Diego Novillo  
2002-11-27  Diego Novillo  
        * tree-dfa.c (add_may_alias): Remove.  Update all users.
        * tree-dfa.c (add_may_alias): Remove.  Update all users.
        (get_alias_index): Remove.  Update all users.
        (get_alias_index): Remove.  Update all users.
        (dfa_stats_d): Remove fields num_may_alias, max_num_may_alias,
        (dfa_stats_d): Remove fields num_may_alias, max_num_may_alias,
        num_alias_imm_rdefs and max_num_alias_imm_rdefs.  Update all users.
        num_alias_imm_rdefs and max_num_alias_imm_rdefs.  Update all users.
        (may_alias_p): Make extern.  Move declaration to tree-flow.h.
        (may_alias_p): Make extern.  Move declaration to tree-flow.h.
        (TRM_DEFAULT): Remove.  Update all users.  Update values of the
        (TRM_DEFAULT): Remove.  Update all users.  Update values of the
        other TRM_* constants.
        other TRM_* constants.
        (create_ref): Don't initialize the PHI argument array with the
        (create_ref): Don't initialize the PHI argument array with the
        number of incoming edges.
        number of incoming edges.
        (collect_dfa_stats): Do not traverse the function body with
        (collect_dfa_stats): Do not traverse the function body with
        walk_tree.
        walk_tree.
        Free temporary hash table before returning.
        Free temporary hash table before returning.
        (compute_may_aliases): Update comment.
        (compute_may_aliases): Update comment.
        (may_alias_p): Switch arguments if the first argument is not an
        (may_alias_p): Switch arguments if the first argument is not an
        INDIRECT_PTR or the artificial global_var.
        INDIRECT_PTR or the artificial global_var.
        (find_may_aliases_for): If a pointer aliases a variable, set the
        (find_may_aliases_for): If a pointer aliases a variable, set the
        pointer to be the alias leader for the variable.
        pointer to be the alias leader for the variable.
        (ref_defines): Call may_alias_p.
        (ref_defines): Call may_alias_p.
        (is_killing_def): Return false if the reaching definition is NULL.
        (is_killing_def): Return false if the reaching definition is NULL.
        Don't check for volatile definitions.
        Don't check for volatile definitions.
        Change second argument to be a tree.  Update all users.
        Change second argument to be a tree.  Update all users.
        * tree-flow-inline.h (alias_imm_reaching_def): Remove.  Update all
        * tree-flow-inline.h (alias_imm_reaching_def): Remove.  Update all
        users.
        users.
        (may_alias): Remove.  Update all users.
        (may_alias): Remove.  Update all users.
        (set_imm_reaching_def): Check for circularity.
        (set_imm_reaching_def): Check for circularity.
        (alias_leader): New function.
        (alias_leader): New function.
        (set_alias_leader): New function.
        (set_alias_leader): New function.
        (is_aliased): New function.
        (is_aliased): New function.
        (is_default_def): Remove.  Update all users.
        (is_default_def): Remove.  Update all users.
        * tree-flow.h (struct var_ref_d): Remove field alias_imm_rdefs.
        * tree-flow.h (struct var_ref_d): Remove field alias_imm_rdefs.
        Update all users.
        Update all users.
        (struct var_def_d): Remove field m_default.  Update all users.
        (struct var_def_d): Remove field m_default.  Update all users.
        (struct tree_ann_d): Remove field may_aliases.  Update all users.
        (struct tree_ann_d): Remove field may_aliases.  Update all users.
        Add field alias_leader.
        Add field alias_leader.
        (struct dfa_counts_d): Remove fields num_may_alias and
        (struct dfa_counts_d): Remove fields num_may_alias and
        num_may_alias_imm_rdefs.  Update all users.
        num_may_alias_imm_rdefs.  Update all users.
        * tree-ssa.c: Update documentation on may-alias processing.
        * tree-ssa.c: Update documentation on may-alias processing.
        (set_ssa_links): Remove third argument.  Update all users.
        (set_ssa_links): Remove third argument.  Update all users.
        (set_alias_imm_reaching_def): Remove.  Update all users.
        (set_alias_imm_reaching_def): Remove.  Update all users.
        (create_default_def): Likewise.
        (create_default_def): Likewise.
        (analyze_rdefs): Likewise.
        (analyze_rdefs): Likewise.
        (currdef_for): Move from tree-flow-inline.h
        (currdef_for): Move from tree-flow-inline.h
        (set_currdef_for): Likewise.
        (set_currdef_for): Likewise.
        (compute_reaching_defs): Rename from compute_tree_rdefs.  Update
        (compute_reaching_defs): Rename from compute_tree_rdefs.  Update
        all users.
        all users.
        (follow_chain): Call is_killing_def instead of is_partial_def.
        (follow_chain): Call is_killing_def instead of is_partial_def.
        (tree_ssa_remove_phi_alternative): Remove unused variable ref.
        (tree_ssa_remove_phi_alternative): Remove unused variable ref.
        (set_ssa_links): When processing V_USE references, make sure that
        (set_ssa_links): When processing V_USE references, make sure that
        CURRDEF is a definition for the variable or one of its aliases.
        CURRDEF is a definition for the variable or one of its aliases.
2002-11-26  Sebastian Pop  
2002-11-26  Sebastian Pop  
        * Makefile.in (OBJS): Add tree-browser.o.
        * Makefile.in (OBJS): Add tree-browser.o.
        (tree-browser.o): New dependency.
        (tree-browser.o): New dependency.
        * tree-browser.c: New file.
        * tree-browser.c: New file.
        * tree-browser.def: New file.
        * tree-browser.def: New file.
2002-11-26  Jason Merrill  
2002-11-26  Jason Merrill  
        Gimplify C++ cleanups.
        Gimplify C++ cleanups.
        * gimplify.c (voidify_wrapper_expr): Split out from...
        * gimplify.c (voidify_wrapper_expr): Split out from...
        (simplify_bind_expr): ...here.
        (simplify_bind_expr): ...here.
        (simplify_cleanup_point_expr): New fn.
        (simplify_cleanup_point_expr): New fn.
        (simplify_target_expr): New fn.
        (simplify_target_expr): New fn.
        (gimple_conditional_context): New fn.
        (gimple_conditional_context): New fn.
        (gimple_push_condition, gimple_pop_condition): New fns.
        (gimple_push_condition, gimple_pop_condition): New fns.
        (simplify_expr) [TRY_CATCH_EXPR]: Handle like TRY_FINALLY_EXPR.
        (simplify_expr) [TRY_CATCH_EXPR]: Handle like TRY_FINALLY_EXPR.
        * c-simplify.c (simplify_cleanup): New fn.
        * c-simplify.c (simplify_cleanup): New fn.
        (c_simplify_stmt): Call it and lang_simplify_stmt.
        (c_simplify_stmt): Call it and lang_simplify_stmt.
        (simplify_expr_stmt): Wrap the expr in a CLEANUP_POINT_EXPR.
        (simplify_expr_stmt): Wrap the expr in a CLEANUP_POINT_EXPR.
        (simplify_return_stmt, simplify_decl_stmt): Likewise.
        (simplify_return_stmt, simplify_decl_stmt): Likewise.
        (simplify_stmt_expr): Handle the STMT_EXPR_NO_SCOPE case.
        (simplify_stmt_expr): Handle the STMT_EXPR_NO_SCOPE case.
        (is_last_stmt_of_scope): Likewise.
        (is_last_stmt_of_scope): Likewise.
        * c-common.h: Declare c_genericize, c_simplify_stmt and
        * c-common.h: Declare c_genericize, c_simplify_stmt and
        lang_simplify_stmt.
        lang_simplify_stmt.
        * c-common.c (lang_simplify_stmt): Define.
        * c-common.c (lang_simplify_stmt): Define.
        Gimplify EXIT_EXPRs.
        Gimplify EXIT_EXPRs.
        * gimplify.c (gimplify_loop_expr, gimplify_exit_expr): New fns.
        * gimplify.c (gimplify_loop_expr, gimplify_exit_expr): New fns.
        (simplify_expr): Call them.
        (simplify_expr): Call them.
        * expr.c (expand_expr) [LOOP_EXPR]: Pass 1 again for exit_flag.
        * expr.c (expand_expr) [LOOP_EXPR]: Pass 1 again for exit_flag.
        * tree-simple.c (right_assocify_expr): Also set TREE_SIDE_EFFECTS.
        * tree-simple.c (right_assocify_expr): Also set TREE_SIDE_EFFECTS.
        * gimplify.c (simplify_expr): Call STRIP_TYPE_NOPS.
        * gimplify.c (simplify_expr): Call STRIP_TYPE_NOPS.
        [REALPART_EXPR]: Don't just return.
        [REALPART_EXPR]: Don't just return.
        * tree-pretty-print.c (dump_c_node): Handle REFERENCE_TYPE.
        * tree-pretty-print.c (dump_c_node): Handle REFERENCE_TYPE.
        * c-pretty-print.c (dump_c_node): Likewise.  Handle null FOR_INIT_STMT.
        * c-pretty-print.c (dump_c_node): Likewise.  Handle null FOR_INIT_STMT.
2002-11-25  Daniel Berlin 
2002-11-25  Daniel Berlin 
        * config.gcc: Try committing the correct version.
        * config.gcc: Try committing the correct version.
        * tree-alias-ander.c (andersen_may_alias): Add "!= NULL" to make
        * tree-alias-ander.c (andersen_may_alias): Add "!= NULL" to make
        return a bool.
        return a bool.
2002-11-24  Daniel Berlin  
2002-11-24  Daniel Berlin  
        * configure.in: Add --with-libbanshee, passed to us by toplevel if
        * configure.in: Add --with-libbanshee, passed to us by toplevel if
        libbanshee was configured. Substitute appropriate definitions for
        libbanshee was configured. Substitute appropriate definitions for
        Makefile (IE disabling tree-alias-ander building) if it wasn't.
        Makefile (IE disabling tree-alias-ander building) if it wasn't.
        * config.in: Regenerated.
        * config.in: Regenerated.
        * config.gcc: Rebuild libbanshee with stage1 on darwin to work
        * config.gcc: Rebuild libbanshee with stage1 on darwin to work
        around system compiler problem.
        around system compiler problem.
        * configure: Regenerated.
        * configure: Regenerated.
        * Makefile.in: Add banshee stuff.
        * Makefile.in: Add banshee stuff.
        * tree-alias-ander.c: New file.
        * tree-alias-ander.c: New file.
        * tree-alias-ander.h: New file.
        * tree-alias-ander.h: New file.
        * tree-alias-common.c (get_alias_var): Fix field based stuff.
        * tree-alias-common.c (get_alias_var): Fix field based stuff.
        (find_func_aliases): Don't walk subtrees if we processed the tree.
        (find_func_aliases): Don't walk subtrees if we processed the tree.
        (ptr_may_alias_var): Fix both field-based and non-field-based lookup.
        (ptr_may_alias_var): Fix both field-based and non-field-based lookup.
2002-11-22  Andrew MacLeod  
2002-11-22  Andrew MacLeod  
        * tree-ssa-dce.c (mark_necessary): Split out mark_tree_necessary. Don't
        * tree-ssa-dce.c (mark_necessary): Split out mark_tree_necessary. Don't
        mark if tree is already marked.
        mark if tree is already marked.
        (mark_tree_necessary): New. Mark tree without processing control parent.
        (mark_tree_necessary): New. Mark tree without processing control parent.
        (mark_control_parent_necessary): Remove recursion, mark trees directly.
        (mark_control_parent_necessary): Remove recursion, mark trees directly.
        (need_to_preserve_store): Can expression/symbol affect external values.
        (need_to_preserve_store): Can expression/symbol affect external values.
        (tree_ssa_eliminate_dead_code): Split.
        (tree_ssa_eliminate_dead_code): Split.
        (find_useful_stmts): Find initial set of needed statements.
        (find_useful_stmts): Find initial set of needed statements.
        (process_worklist): Find statements which calculate needed statements.
        (process_worklist): Find statements which calculate needed statements.
        (remove_dead_stmts): Delete statements which are dead.
        (remove_dead_stmts): Delete statements which are dead.
2002-11-16  Jason Merrill  
2002-11-16  Jason Merrill  
        Improve tree dumps.
        Improve tree dumps.
        * c-pretty-print.c, tree-pretty-print.c (dump_c_node): Handle
        * c-pretty-print.c, tree-pretty-print.c (dump_c_node): Handle
        integers larger than a host word.
        integers larger than a host word.
        (op_prio): Handle INIT_EXPR.
        (op_prio): Handle INIT_EXPR.
        * gimplify.c (simplify_bind_expr): Set TREE_SIDE_EFFECTS and type
        * gimplify.c (simplify_bind_expr): Set TREE_SIDE_EFFECTS and type
        of void_type_node on the COMPOUND_EXPRs as we walk.
        of void_type_node on the COMPOUND_EXPRs as we walk.
        * tree-simple.c (right_assocify_expr): Propagate the type from cur
        * tree-simple.c (right_assocify_expr): Propagate the type from cur
        rather than rhs.
        rather than rhs.
        * c-decl.c (finish_function): Call c_genericize instead of
        * c-decl.c (finish_function): Call c_genericize instead of
        simplify_function_tree.
        simplify_function_tree.
        * c-simplify.c (c_genericize): New function.
        * c-simplify.c (c_genericize): New function.
        (simplify_stmt_expr): Just genericize.
        (simplify_stmt_expr): Just genericize.
        (simplify_compound_literal_expr): Likewise.
        (simplify_compound_literal_expr): Likewise.
        (c_build_bind_expr): Don't build a block for an artificial decl.
        (c_build_bind_expr): Don't build a block for an artificial decl.
        (simplify_decl_stmt): Add the variable to the temps list iff it's
        (simplify_decl_stmt): Add the variable to the temps list iff it's
        artificial.
        artificial.
        (c_simplify_expr): Don't call push/pop_context.
        (c_simplify_expr): Don't call push/pop_context.
        * c-decl.c (build_compound_literal): Set DECL_ARTIFICIAL.
        * c-decl.c (build_compound_literal): Set DECL_ARTIFICIAL.
        * c-tree.h: Declare c_genericize.
        * c-tree.h: Declare c_genericize.
        * c-simplify.c (tree_build_scope): Remove.
        * c-simplify.c (tree_build_scope): Remove.
        Remove INIT_EXPR from GIMPLE.
        Remove INIT_EXPR from GIMPLE.
        * c-simplify.c (simplify_decl_stmt): Use MODIFY_EXPR.
        * c-simplify.c (simplify_decl_stmt): Use MODIFY_EXPR.
        * gimplify.c (simplify_bind_expr): Likewise.
        * gimplify.c (simplify_bind_expr): Likewise.
        (simplify_modify_expr): Convert INIT_EXPR to MODIFY_EXPR.
        (simplify_modify_expr): Convert INIT_EXPR to MODIFY_EXPR.
        * c-simplify.c (create_tmp_var_1): Drop; change all users to call
        * c-simplify.c (create_tmp_var_1): Drop; change all users to call
        create_tmp_var.
        create_tmp_var.
        (gimple_add_tmp_var): Now adds to the external temps list if
        (gimple_add_tmp_var): Now adds to the external temps list if
        available, or directly to the function otherwise.
        available, or directly to the function otherwise.
        Avoid gratuitous unused warnings.
        Avoid gratuitous unused warnings.
        * c-simplify.c (simplify_expr_stmt): Check TREE_SIDE_EFFECTS
        * c-simplify.c (simplify_expr_stmt): Check TREE_SIDE_EFFECTS
        directly.  Also check for explicit conversions to void.
        directly.  Also check for explicit conversions to void.
        (expr_has_effect): Remove.
        (expr_has_effect): Remove.
        * Makefile.in (OBJS): Remove tree-dchain.o.
        * Makefile.in (OBJS): Remove tree-dchain.o.
        * stor-layout.c (variable_size): We don't care about
        * stor-layout.c (variable_size): We don't care about
        global_bindings_p if the frontend doesn't want a list of the
        global_bindings_p if the frontend doesn't want a list of the
        expressions.
        expressions.
2002-11-13  Diego Novillo  
2002-11-13  Diego Novillo  
        * toplev.c (parse_options_and_default_flags): Enable SSA-CCP by
        * toplev.c (parse_options_and_default_flags): Enable SSA-CCP by
        default with optimization >= 1.
        default with optimization >= 1.
        * tree-dfa.c (find_refs_in_expr): Clobber '*.GLOBAL_VAR', not
        * tree-dfa.c (find_refs_in_expr): Clobber '*.GLOBAL_VAR', not
        'GLOBAL_VAR'.
        'GLOBAL_VAR'.
        (collect_dfa_stats): Collect statistics on '*.GLOBAL_VAR'.
        (collect_dfa_stats): Collect statistics on '*.GLOBAL_VAR'.
        (compute_may_aliases): Make sure that variable is an INDIRECT_REF.
        (compute_may_aliases): Make sure that variable is an INDIRECT_REF.
        (may_alias_p): GLOBAL_VAR should alias INDIRECT_REFs.
        (may_alias_p): GLOBAL_VAR should alias INDIRECT_REFs.
        Only check addressability on VAR_DECLs.
        Only check addressability on VAR_DECLs.
        (find_may_aliases_for): Make sure argument is an INDIRECT_REF.
        (find_may_aliases_for): Make sure argument is an INDIRECT_REF.
        * tree-flow-inline.h (indirect_var): Call DECL_P.
        * tree-flow-inline.h (indirect_var): Call DECL_P.
        (set_indirect_var): Call DECL_P.
        (set_indirect_var): Call DECL_P.
        Create annotation if it doesn't exist.
        Create annotation if it doesn't exist.
        (create_indirect_ref): Move from tree-dfa.c.
        (create_indirect_ref): Move from tree-dfa.c.
        * tree-flow.h (create_indirect_ref): Declare.
        * tree-flow.h (create_indirect_ref): Declare.
        * tree-ssa-ccp.c (visit_phi_node): Avoid debugging dump from
        * tree-ssa-ccp.c (visit_phi_node): Avoid debugging dump from
        accessing uninitialized data.
        accessing uninitialized data.
        * tree-ssa.c (init_tree_ssa): Create an INDIRECT_REF node for
        * tree-ssa.c (init_tree_ssa): Create an INDIRECT_REF node for
        .GLOBAL_VAR.
        .GLOBAL_VAR.
2002-11-12  Diego Novillo  
2002-11-12  Diego Novillo  
        * tree-cfg.c (delete_tree_cfg): Call free_aux_for_blocks.
        * tree-cfg.c (delete_tree_cfg): Call free_aux_for_blocks.
        Call free_basic_block_vars.
        Call free_basic_block_vars.
        * gimplify.c (simplify_expr): VA_ARG_EXPR nodes are in GIMPLE form
        * gimplify.c (simplify_expr): VA_ARG_EXPR nodes are in GIMPLE form
        already.
        already.
        Gimplify BIT_FIELD_REF nodes.
        Gimplify BIT_FIELD_REF nodes.
        (simplify_call_expr): Update comment.
        (simplify_call_expr): Update comment.
        * tree-dfa.c (find_refs_in_expr): VA_ARG_EXPR nodes make no
        * tree-dfa.c (find_refs_in_expr): VA_ARG_EXPR nodes make no
        data references.
        data references.
        Handle BIT_FIELD_REF nodes.
        Handle BIT_FIELD_REF nodes.
        * tree-pretty-print.c (op_prio): Don't write an error message if
        * tree-pretty-print.c (op_prio): Don't write an error message if
        the operand is not recognized.
        the operand is not recognized.
        * tree-simple.c (is_simple_unary_expr): Handle BIT_FIELD_REFs.
        * tree-simple.c (is_simple_unary_expr): Handle BIT_FIELD_REFs.
        (is_simplifiable_builtin): Only return false for MD builtins.
        (is_simplifiable_builtin): Only return false for MD builtins.
2002-11-08  Diego Novillo  
2002-11-08  Diego Novillo  
        * tree-cfg.c (cleanup_switch_expr_graph): Handle edges going to
        * tree-cfg.c (cleanup_switch_expr_graph): Handle edges going to
        EXIT_BLOCK_PTR.
        EXIT_BLOCK_PTR.
        (first_stmt): Return NULL for ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR and
        (first_stmt): Return NULL for ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR and
        INVALID_BLOCK.
        INVALID_BLOCK.
        * tree-dfa.c (find_refs_in_expr): Call mark_not_simple.
        * tree-dfa.c (find_refs_in_expr): Call mark_not_simple.
2002-11-07  Diego Novillo  
2002-11-07  Diego Novillo  
        * Makefile.in (tree-ssa.o, tree-cfg.o, tree-dfa.o): Add dependency
        * Makefile.in (tree-ssa.o, tree-cfg.o, tree-dfa.o): Add dependency
        on function.h
        on function.h
        * tree-cfg.c: Include function.h.
        * tree-cfg.c: Include function.h.
        (build_tree_cfg): Set dump_file to NULL after closing the file.
        (build_tree_cfg): Set dump_file to NULL after closing the file.
        (remove_tree_bb): Don't dump warnings about statements being
        (remove_tree_bb): Don't dump warnings about statements being
        removed.
        removed.
        (dump_tree_cfg): Use current_function_name.
        (dump_tree_cfg): Use current_function_name.
        Check that the flowgraph is not empty before dumping the function
        Check that the flowgraph is not empty before dumping the function
        body.
        body.
        (tree_cfg2dot): Use current_function_name.
        (tree_cfg2dot): Use current_function_name.
        * tree-dfa.c: Include function.h
        * tree-dfa.c: Include function.h
        (dump_dfa_stats): Use current_function_name.
        (dump_dfa_stats): Use current_function_name.
        * tree-optimize.c (optimize_function_tree): Set dump_file to NULL
        * tree-optimize.c (optimize_function_tree): Set dump_file to NULL
        after closing the file.
        after closing the file.
        * tree-pretty-print.c (dump_generic_node): Make sure that the
        * tree-pretty-print.c (dump_generic_node): Make sure that the
        flowgraph exists before displaying block boundaries.
        flowgraph exists before displaying block boundaries.
        * tree-ssa-ccp.c (tree_ssa_ccp): Set dump_file to NULL after
        * tree-ssa-ccp.c (tree_ssa_ccp): Set dump_file to NULL after
        closing the file.
        closing the file.
        * tree-ssa.c: Include function.h.
        * tree-ssa.c: Include function.h.
        (build_tree_ssa): Set tree_ssa_dump_file to NULL after closing the
        (build_tree_ssa): Set tree_ssa_dump_file to NULL after closing the
        file.
        file.
        (dump_reaching_defs): Use current_function_name.
        (dump_reaching_defs): Use current_function_name.
        (dump_tree_ssa): Likewise.
        (dump_tree_ssa): Likewise.
2002-11-07  Diego Novillo  
2002-11-07  Diego Novillo  
        * tree-cfg.c (successor_block): Return EXIT_BLOCK_PTR if no
        * tree-cfg.c (successor_block): Return EXIT_BLOCK_PTR if no
        successor can be found while walking the nesting chain.
        successor can be found while walking the nesting chain.
2002-11-07  Diego Novillo  
2002-11-07  Diego Novillo  
        * tree-cfg.c: Fix some formatting in code and comments.
        * tree-cfg.c: Fix some formatting in code and comments.
        (set_bb_for_stmt): Move from tree-flow-inline.h
        (set_bb_for_stmt): Move from tree-flow-inline.h
        * tree-dfa.c: Fix some formatting in code and comments.
        * tree-dfa.c: Fix some formatting in code and comments.
        * tree-flow-inline.h: Likewise.
        * tree-flow-inline.h: Likewise.
        * tree-flow.h: Likewise.
        * tree-flow.h: Likewise.
        * tree-ssa.c: Likewise.
        * tree-ssa.c: Likewise.
2002-11-06  Diego Novillo  
2002-11-06  Diego Novillo  
        * Makefile.in (tree-ssa-ccp.o): Add dependency on tree-inline.h
        * Makefile.in (tree-ssa-ccp.o): Add dependency on tree-inline.h
        * tree-cfg.c (find_taken_edge): New function.
        * tree-cfg.c (find_taken_edge): New function.
        (cleanup_cond_expr_graph): Call it.
        (cleanup_cond_expr_graph): Call it.
        (disconnect_unreachable_case_labels): Call it.
        (disconnect_unreachable_case_labels): Call it.
        * tree-dfa.c (struct clobber_data_d): Remove field
        * tree-dfa.c (struct clobber_data_d): Remove field
        parent_expr_p.  Update all users.
        parent_expr_p.  Update all users.
        (find_refs_in_expr): Remove argument parent_expr_p.  Update all users.
        (find_refs_in_expr): Remove argument parent_expr_p.  Update all users.
        (create_ref): Remove arguments parent_expr_p and operand_p.  Update
        (create_ref): Remove arguments parent_expr_p and operand_p.  Update
        all users.
        all users.
        (replace_ref_in): Rename from replace_ref_operand_with.  Update all
        (replace_ref_in): Rename from replace_ref_operand_with.  Update all
        users.  Find the operand in the statement and replace it with a new
        users.  Find the operand in the statement and replace it with a new
        operand.
        operand.
        (replace_ref_r): New local function.
        (replace_ref_r): New local function.
        (is_killing_def): Also handle V_PHI references.
        (is_killing_def): Also handle V_PHI references.
        (output_ref): Move from tree-flow-inline.h
        (output_ref): Move from tree-flow-inline.h
        * tree-flow-inline.h (ref_expr): Remove.  Update all users.
        * tree-flow-inline.h (ref_expr): Remove.  Update all users.
        (restore_ref_operand): Remove.  Update all users.
        (restore_ref_operand): Remove.  Update all users.
        (set_output_ref): Remove.  Update all users.
        (set_output_ref): Remove.  Update all users.
        (is_assignment_stmt): New function.
        (is_assignment_stmt): New function.
        (is_may_def, is_may_use, is_partial_def, is_partial_use,
        (is_may_def, is_may_use, is_partial_def, is_partial_use,
        is_volatile_def, is_volatile_use, is_default_def,
        is_volatile_def, is_volatile_use, is_default_def,
        is_clobbering_def, is_initializing_def, is_relocating_def,
        is_clobbering_def, is_initializing_def, is_relocating_def,
        is_addressof_use, is_pure_use): Check reference type first.
        is_addressof_use, is_pure_use): Check reference type first.
        (is_pure_def): New function.
        (is_pure_def): New function.
        * tree-flow.h (struct tree_ref_common): Remove fields expr_p,
        * tree-flow.h (struct tree_ref_common): Remove fields expr_p,
        operand_p and orig_operand.  Update all users.
        operand_p and orig_operand.  Update all users.
        (struct tree_ann_d): Remove field output_ref.  Update all users.
        (struct tree_ann_d): Remove field output_ref.  Update all users.
        * tree-ssa-ccp.c: Include tree-inline.h.
        * tree-ssa-ccp.c: Include tree-inline.h.
        (simulate_block): Simulate every statement in the block, not its
        (simulate_block): Simulate every statement in the block, not its
        references
        references
        (simulate_def_use_chains): Simulate statements containing uses
        (simulate_def_use_chains): Simulate statements containing uses
        reached by the definition.
        reached by the definition.
        (substitute_and_fold): Traverse statements, not references.
        (substitute_and_fold): Traverse statements, not references.
        Call fold_stmt.
        Call fold_stmt.
        (visit_phi_node): If PHI node is marked volatile, assume varying.
        (visit_phi_node): If PHI node is marked volatile, assume varying.
        (visit_stmt): Rename from visit_expression_for.  Work on a
        (visit_stmt): Rename from visit_expression_for.  Work on a
        statement, not a reference.
        statement, not a reference.
        (visit_assignment): Rename from visit_assignment_for.  Work on a
        (visit_assignment): Rename from visit_assignment_for.  Work on a
        statement, not a reference.
        statement, not a reference.
        (visit_cond_stmt): Rename from visit_condexpr_for.  Work on a
        (visit_cond_stmt): Rename from visit_condexpr_for.  Work on a
        statement, not a reference.
        statement, not a reference.
        (evaluate_stmt): Rename from evaluate_expr.  Work on a statement,
        (evaluate_stmt): Rename from evaluate_expr.  Work on a statement,
        not a reference.
        not a reference.
        (initialize): Initialize special definitions to varying.
        (initialize): Initialize special definitions to varying.
        (replace_uses_in): Work on a statement, not an expression.
        (replace_uses_in): Work on a statement, not an expression.
        (fold_stmt): Rename from ccp_fold.  Work on a statement, not an
        (fold_stmt): Rename from ccp_fold.  Work on a statement, not an
        expression.
        expression.
        (get_rhs): New local function.
        (get_rhs): New local function.
        (set_rhs): New local function.
        (set_rhs): New local function.
2002-11-06  Daniel Berlin  
2002-11-06  Daniel Berlin  
        * tree-flow.h: Prototype set_bb_for_stmt, last_stmt_ptr,
        * tree-flow.h: Prototype set_bb_for_stmt, last_stmt_ptr,
        add_ephi_arg, num_ephi_args, set_ephi_arg, ephi_arg.
        add_ephi_arg, num_ephi_args, set_ephi_arg, ephi_arg.
        (enum tree_ref_type): Add E_LEFT, E_KILL, E_EXIT.
        (enum tree_ref_type): Add E_LEFT, E_KILL, E_EXIT.
        * tree-cfg.c (set_bb_for_stmt): Move to tree-flow-inline.h.
        * tree-cfg.c (set_bb_for_stmt): Move to tree-flow-inline.h.
        (last_stmt_ptr): New function, gives pointer to last statement in
        (last_stmt_ptr): New function, gives pointer to last statement in
        bb.
        bb.
        * tree-flow-inline.h: Add exprref_processed, exprref_processed2,
        * tree-flow-inline.h: Add exprref_processed, exprref_processed2,
        expruse_phi, num_ephi_args, set_ephi_arg, ephi_arg, add_ephi_arg.
        expruse_phi, num_ephi_args, set_ephi_arg, ephi_arg, add_ephi_arg.
        * tree-dfa.c (tree_ref_structure): Handle E_{LEFT,KILL,EXIT}.
        * tree-dfa.c (tree_ref_structure): Handle E_{LEFT,KILL,EXIT}.
        (ref_type_name): Ditto.
        (ref_type_name): Ditto.
        (tree_ref_size): Ditto.
        (tree_ref_size): Ditto.
        (dump_ref): E_PHI's phi_args is now a varray of phi_arg structs.
        (dump_ref): E_PHI's phi_args is now a varray of phi_arg structs.
        (add_ephi_arg): New function.
        (add_ephi_arg): New function.
        (remove_ref_from_list): Fix crash when node not found.
        (remove_ref_from_list): Fix crash when node not found.
        (compute_may_aliases): Add timing for points-to analysis.
        (compute_may_aliases): Add timing for points-to analysis.
        * timevar.def: Add TV_TREE_PTA.
        * timevar.def: Add TV_TREE_PTA.
        * tree-ssa-pre.c: Start of massive cleanup and rewriting (in
        * tree-ssa-pre.c: Start of massive cleanup and rewriting (in
        preparation for load/store PRE). No more uses of ref_expr, proper
        preparation for load/store PRE). No more uses of ref_expr, proper
        call handling. Started removing unnecessary structures and lists,
        call handling. Started removing unnecessary structures and lists,
        started removing redundant and inefficient operations (IE O(n^2)
        started removing redundant and inefficient operations (IE O(n^2)
        loops to process all phi operands, etc).  Basic load PRE implemented.
        loops to process all phi operands, etc).  Basic load PRE implemented.
        Code may look ugly due to large pieces commented out waiting for DFA
        Code may look ugly due to large pieces commented out waiting for DFA
        updating of refs to redo.
        updating of refs to redo.
2002-11-05  Diego Novillo  
2002-11-05  Diego Novillo  
        * tree-cfg.c (create_block_annotations): New local function.
        * tree-cfg.c (create_block_annotations): New local function.
        (create_bb_ann): Remove.  Update all users.
        (create_bb_ann): Remove.  Update all users.
        (parent_array): New local variable.
        (parent_array): New local variable.
        (build_tree_cfg): Initialize it.
        (build_tree_cfg): Initialize it.
        Call create_block_annotations.
        Call create_block_annotations.
        (create_bb): Call alloc_block instead of ggc_alloc to allocate
        (create_bb): Call alloc_block instead of ggc_alloc to allocate
        memory for basic blocks.
        memory for basic blocks.
        Don't call set_parent_block.
        Don't call set_parent_block.
        Grow array parent_array.
        Grow array parent_array.
        (dump_tree_cfg): Change meaning of second argument.  Make it accept
        (dump_tree_cfg): Change meaning of second argument.  Make it accept
        any of the TDF_* flags defined in tree.h.
        any of the TDF_* flags defined in tree.h.
        (delete_tree_cfg): Call free_aux_for_blocks.
        (delete_tree_cfg): Call free_aux_for_blocks.
        Free array parent_array.
        Free array parent_array.
        * tree-flow-inline.h (get_filename): New function.
        * tree-flow-inline.h (get_filename): New function.
        (is_exec_stmt): return false if T is error_mark_node.
        (is_exec_stmt): return false if T is error_mark_node.
        * tree-flow.h (struct var_ref_d): Mark alias_imm_rdefs field for
        * tree-flow.h (struct var_ref_d): Mark alias_imm_rdefs field for
        garbage collection.
        garbage collection.
        (get_filename): Declare.
        (get_filename): Declare.
        (struct bb_ann_d): Rename from bb_ann_def.
        (struct bb_ann_d): Rename from bb_ann_def.
        Remove garbage collection markers.
        Remove garbage collection markers.
        (referenced_vars): Mark for garbage collection.
        (referenced_vars): Mark for garbage collection.
        (global_var): Likewise.
        (global_var): Likewise.
        (create_bb_ann): Remove.
        (create_bb_ann): Remove.
        * tree-optimize.c (optimize_function_tree): Remove CFG and SSA
        * tree-optimize.c (optimize_function_tree): Remove CFG and SSA
        after debugging dumps.
        after debugging dumps.
        * diagnostic.h (print_generic_stmt): Rename from print_generic_tree.
        * diagnostic.h (print_generic_stmt): Rename from print_generic_tree.
        Update all users.
        Update all users.
        (print_generic_expr): Rename from print_generic_node.  Update all
        (print_generic_expr): Rename from print_generic_node.  Update all
        users.
        users.
        (PPF_BRIEF): Remove.  Update all users.
        (PPF_BRIEF): Remove.  Update all users.
        (PPF_BLOCK): Remove.  Update all users.
        (PPF_BLOCK): Remove.  Update all users.
        (PPF_LINENO): Remove.  Update all users.
        (PPF_LINENO): Remove.  Update all users.
        (PPF_IS_STMT): Remove.  Update all users.
        (PPF_IS_STMT): Remove.  Update all users.
        * flags.h (flag_dump_tree_all_ssa): Remove.  Update all users.
        * flags.h (flag_dump_tree_all_ssa): Remove.  Update all users.
        * toplev.c (f_options): Remove entry for -fdump-tree-all-ssa.
        * toplev.c (f_options): Remove entry for -fdump-tree-all-ssa.
        Update all users.
        Update all users.
        * tree-dump.c (dump_enable_all): Rename from dump_enable_all_ssa.
        * tree-dump.c (dump_enable_all): Rename from dump_enable_all_ssa.
        Update all users.
        Update all users.
        (dump_files): Add entry for -fdump-tree-all.
        (dump_files): Add entry for -fdump-tree-all.
        (dump_option_value_info): Remove entries for TDF_REFS and
        (dump_option_value_info): Remove entries for TDF_REFS and
        TDF_RDEFS.
        TDF_RDEFS.
        Add entry for TDF_BLOCK.
        Add entry for TDF_BLOCK.
        (dump_switch_p): If -fdump-tree-all was given, call dump_enable_all.
        (dump_switch_p): If -fdump-tree-all was given, call dump_enable_all.
        * tree-pretty-print.c (PPF_BRIEF): Remove.  Update all users.
        * tree-pretty-print.c (PPF_BRIEF): Remove.  Update all users.
        (PPF_BLOCK): Remove.  Update all users.
        (PPF_BLOCK): Remove.  Update all users.
        (PPF_LINENO): Remove.  Update all users.
        (PPF_LINENO): Remove.  Update all users.
        (PPF_IS_STMT): Remove.  Update all users.
        (PPF_IS_STMT): Remove.  Update all users.
        (dumping_stmts): New local variable.
        (dumping_stmts): New local variable.
        (print_generic_stmt): Rename from print_generic_tree.  Update all
        (print_generic_stmt): Rename from print_generic_tree.  Update all
        users.
        users.
        Set dumping_stmts to true.
        Set dumping_stmts to true.
        (print_generic_expr): Rename from print_generic_node.  Update all
        (print_generic_expr): Rename from print_generic_node.  Update all
        users.
        users.
        Set dumping_stmts to false.
        Set dumping_stmts to false.
        (maybe_init_pretty_print): Set last_bb to -1.
        (maybe_init_pretty_print): Set last_bb to -1.
        (dump_block_info): If available, dump file and line number
        (dump_block_info): If available, dump file and line number
        information for the first statement in the basic block.
        information for the first statement in the basic block.
        * tree-ssa.c (build_tree_ssa): Dump referenced variables and
        * tree-ssa.c (build_tree_ssa): Dump referenced variables and
        reaching definition information if -details is given.
        reaching definition information if -details is given.
        * tree.h (enum tree_dump_index): Rename TDI_all to TDI_tu.  Update
        * tree.h (enum tree_dump_index): Rename TDI_all to TDI_tu.  Update
        all users.
        all users.
        Add new index TDI_all.
        Add new index TDI_all.
        (TDF_DETAILS): Change value.
        (TDF_DETAILS): Change value.
        (TDF_REFS): Remove.  Update all users.
        (TDF_REFS): Remove.  Update all users.
        (TDF_RDEFS): Remove.  Update all users.
        (TDF_RDEFS): Remove.  Update all users.
        (TDF_BLOCK): Define.
        (TDF_BLOCK): Define.
        * doc/invoke.texi: Update documentation for -fdump-tree-... flags.
        * doc/invoke.texi: Update documentation for -fdump-tree-... flags.
2002-11-05  Frank Ch. Eigler  
2002-11-05  Frank Ch. Eigler  
        * tree-mudflap.c (mudflap_enqueue_decl, _constant): Use
        * tree-mudflap.c (mudflap_enqueue_decl, _constant): Use
        size_in_bytes, not c_size_in_bytes.
        size_in_bytes, not c_size_in_bytes.
        (mf_init_extern_trees): Import uintptr_t typedef node from
        (mf_init_extern_trees): Import uintptr_t typedef node from
        mf-runtime.h.
        mf-runtime.h.
2002-11-01  Diego Novillo  
2002-11-01  Diego Novillo  
        * tree-cfg.c (remove_tree_bb): Add new argument remove_stmts.
        * tree-cfg.c (remove_tree_bb): Add new argument remove_stmts.
        Update all callers.
        Update all callers.
        (make_ctrl_stmt_edges): Add an edge to the body of a SWITCH_EXPR.
        (make_ctrl_stmt_edges): Add an edge to the body of a SWITCH_EXPR.
        (make_cond_expr_edges): Don't try to linearize the if() subgraph.
        (make_cond_expr_edges): Don't try to linearize the if() subgraph.
        (make_case_label_edges): Don't remove the fallthru edge from the
        (make_case_label_edges): Don't remove the fallthru edge from the
        entry block to the switch() subgraph.
        entry block to the switch() subgraph.
        (cleanup_tree_cfg): Call cleanup_control_flow.
        (cleanup_tree_cfg): Call cleanup_control_flow.
        (remove_unreachable_blocks): Remove blocks of compound structures
        (remove_unreachable_blocks): Remove blocks of compound structures
        before removing the entry block.
        before removing the entry block.
        (remove_blocks): New local function.
        (remove_blocks): New local function.
        (blocks_unreachable_p): New local function.
        (blocks_unreachable_p): New local function.
        (is_nonlocal_label_block): New local function.
        (is_nonlocal_label_block): New local function.
        (find_subblocks): New local function.
        (find_subblocks): New local function.
        (is_parent): New local function.
        (is_parent): New local function.
        (gsi_remove): New function.
        (gsi_remove): New function.
        (remove_stmt): New local function.
        (remove_stmt): New local function.
        (cleanup_control_flow): New local function.
        (cleanup_control_flow): New local function.
        (cleanup_cond_expr_graph): New local function.
        (cleanup_cond_expr_graph): New local function.
        (cleanup_switch_expr_graph): New local function.
        (cleanup_switch_expr_graph): New local function.
        (disconnect_unreachable_case_labels): New local function.
        (disconnect_unreachable_case_labels): New local function.
        * tree-dfa.c (remove_decl): New function.
        * tree-dfa.c (remove_decl): New function.
        (find_decl_location): New function.
        (find_decl_location): New function.
        * tree-flow.h (gsi_remove): Declare.
        * tree-flow.h (gsi_remove): Declare.
        (remove_decl): Declare.
        (remove_decl): Declare.
        (find_decl_location): Declare.
        (find_decl_location): Declare.
        * tree-ssa-ccp.c (optimize_unexecutable_edges): Remove.  Update all
        * tree-ssa-ccp.c (optimize_unexecutable_edges): Remove.  Update all
        users.
        users.
        (ssa_ccp_df_delete_unreachable_insns): Remove.  Update all users.
        (ssa_ccp_df_delete_unreachable_insns): Remove.  Update all users.
        (tree_ssa_ccp): Call print_generic_tree with PPF_BLOCK.
        (tree_ssa_ccp): Call print_generic_tree with PPF_BLOCK.
2002-10-31  Diego Novillo  
2002-10-31  Diego Novillo  
        * tree-dfa.c (create_indirect_ref): New local function.
        * tree-dfa.c (create_indirect_ref): New local function.
        (find_refs_in_expr): Call it.
        (find_refs_in_expr): Call it.
        (create_ref): Check E_* reference types with == instead of &.
        (create_ref): Check E_* reference types with == instead of &.
        (dump_ref): Likewise.
        (dump_ref): Likewise.
        (count_tree_refs): Likewise.
        (count_tree_refs): Likewise.
        * tree-ssa.c (set_ssa_links): Update documentation comment for
        * tree-ssa.c (set_ssa_links): Update documentation comment for
        save_chain.
        save_chain.
2002-10-31  Diego Novillo  
2002-10-31  Diego Novillo  
        * tree-cfg.c (remove_tree_bb): Don't walk beyond the end of the
        * tree-cfg.c (remove_tree_bb): Don't walk beyond the end of the
        basic block.
        basic block.
2002-10-26  Daniel Berlin  
2002-10-26  Daniel Berlin  
        * flags.h: Remove flag_tree_points_to from here.
        * flags.h: Remove flag_tree_points_to from here.
        * toplev.c: Include tree-alias-common.h.
        * toplev.c: Include tree-alias-common.h.
        (flag_tree_points_to): Now of type enum pta_type, rather than
        (flag_tree_points_to): Now of type enum pta_type, rather than
        int.
        int.
        (lang_independent_options): Remove flag_tree_points_to.
        (lang_independent_options): Remove flag_tree_points_to.
        (display_help): Display help for tree-points-to here.
        (display_help): Display help for tree-points-to here.
        (decode_f_option): Allow selecting of points-to algorithm.
        (decode_f_option): Allow selecting of points-to algorithm.
        * tree-alias-common.c (varmap): Removed.
        * tree-alias-common.c (varmap): Removed.
        (alias_annot): Changed to a hash table.  Update all functions
        (alias_annot): Changed to a hash table.  Update all functions
        appropriately.
        appropriately.
        (FIELD_BASED): New macro, switches between field-based analysis,
        (FIELD_BASED): New macro, switches between field-based analysis,
        and field-independent analysis (field-based isn't quite done yet).
        and field-independent analysis (field-based isn't quite done yet).
        (alias_annot_entry): New, used in hash table.
        (alias_annot_entry): New, used in hash table.
        (annot_eq): New function.
        (annot_eq): New function.
        (annot_hash): New function.
        (annot_hash): New function.
        (find_func_aliases): Handle casts, fix indendation.
        (find_func_aliases): Handle casts, fix indendation.
        (splaycount): Removed.
        (splaycount): Removed.
        (splay_tree_count): Removed.
        (splay_tree_count): Removed.
        (display_points_to_set): Removed.
        (display_points_to_set): Removed.
        (splay_tree_size): Removed.
        (splay_tree_size): Removed.
        (alias_get_name): New function.
        (alias_get_name): New function.
        (ptr_may_alias_var): Globals are a bit funky to handle.
        (ptr_may_alias_var): Globals are a bit funky to handle.
        * tree-alias-steen.c: Use alias_get_name, rather than
        * tree-alias-steen.c: Use alias_get_name, rather than
        print_generic_node.
        print_generic_node.
        (steen_simple_assign): Handle assignment of PTF's.
        (steen_simple_assign): Handle assignment of PTF's.
        (test_assign): Remove.
        (test_assign): Remove.
        * tree-alias-common.h (enum pta_type): New.
        * tree-alias-common.h (enum pta_type): New.
        (alias_get_name): New.
        (alias_get_name): New.
        (flag_tree_points_to): New.
        (flag_tree_points_to): New.
2002-10-26  Diego Novillo  
2002-10-26  Diego Novillo  
        * tree-cfg.c (cleanup_tree_cfg): Uncomment call to
        * tree-cfg.c (cleanup_tree_cfg): Uncomment call to
        compact_blocks.
        compact_blocks.
2002-10-26  Diego Novillo  
2002-10-26  Diego Novillo  
        * Makefile.in (tree-pretty-print.o): Depend on $(TREE_FLOW_H)
        * Makefile.in (tree-pretty-print.o): Depend on $(TREE_FLOW_H)
        * basic-block.h (BB_COMPOUND_ENTRY): Rename from BB_CONTROL_ENTRY.
        * basic-block.h (BB_COMPOUND_ENTRY): Rename from BB_CONTROL_ENTRY.
        * diagnostic.h (dump_generic_tree): Remove extern declaration.
        * diagnostic.h (dump_generic_tree): Remove extern declaration.
        (print_generic_node_brief): Remove.  Update all users.
        (print_generic_node_brief): Remove.  Update all users.
        (PPF_BRIEF): Declare.
        (PPF_BRIEF): Declare.
        (PPF_BLOCK): Declare.
        (PPF_BLOCK): Declare.
        (PPF_LINENO): Declare.
        (PPF_LINENO): Declare.
        (PPF_IS_STMT): Declare.
        (PPF_IS_STMT): Declare.
        * tree-pretty-print.c (PPF_BRIEF): New constant.
        * tree-pretty-print.c (PPF_BRIEF): New constant.
        (PPF_BLOCK): New constant.
        (PPF_BLOCK): New constant.
        (PPF_LINENO): New constant.
        (PPF_LINENO): New constant.
        (PPF_IS_STMT): New constant.
        (PPF_IS_STMT): New constant.
        (dump_block_info): New local function.
        (dump_block_info): New local function.
        (last_bb): New local variable.
        (last_bb): New local variable.
        (dump_generic_tree): Remove unused function.
        (dump_generic_tree): Remove unused function.
        (print_generic_tree): Add third argument 'flags'.  Update all
        (print_generic_tree): Add third argument 'flags'.  Update all
        users.
        users.
        (print_generic_node_brief): Remove.  Update all users.
        (print_generic_node_brief): Remove.  Update all users.
        (print_generic_node): Add third argument 'flags'.  Update all
        (print_generic_node): Add third argument 'flags'.  Update all
        users.
        users.
        (dump_generic_node): Add third argument 'flags'.  Update all users.
        (dump_generic_node): Add third argument 'flags'.  Update all users.
        If PPF_BLOCK is set, display basic block information at basic block
        If PPF_BLOCK is set, display basic block information at basic block
        boundaries.
        boundaries.
        If PPF_IS_STMT is set, change the way COMPOUND_EXPR nodes are
        If PPF_IS_STMT is set, change the way COMPOUND_EXPR nodes are
        rendered.
        rendered.
        If PPF_BRIEF is set, don't show the bodies of control statements.
        If PPF_BRIEF is set, don't show the bodies of control statements.
        (print_declaration):
        (print_declaration):
        * toplev.c (process_options): Update comment for -fdisable-simple.
        * toplev.c (process_options): Update comment for -fdisable-simple.
        * tree-cfg.c (remove_tree_bb): Rename from tree_delete_bb.
        * tree-cfg.c (remove_tree_bb): Rename from tree_delete_bb.
        (latch_block): Move declaration to tree-flow.h.  Declare extern.
        (latch_block): Move declaration to tree-flow.h.  Declare extern.
        (make_blocks): Start a new block after finding a control flow
        (make_blocks): Start a new block after finding a control flow
        altering statement.
        altering statement.
        (make_loop_expr_blocks): Set the loop entry block to be the parent
        (make_loop_expr_blocks): Set the loop entry block to be the parent
        block for the loop latch block.
        block for the loop latch block.
        (cleanup_tree_cfg): Rename from tree_cleanup_cfg.
        (cleanup_tree_cfg): Rename from tree_cleanup_cfg.
        Call compact_blocks.
        Call compact_blocks.
        (remove_tree_bb): Rename from tree_delete_bb.  Update all users.
        (remove_tree_bb): Rename from tree_delete_bb.  Update all users.
        (dump_tree_bb): Rename from dump_tree_bb.  Update all users.
        (dump_tree_bb): Rename from dump_tree_bb.  Update all users.
        Dump information about loop latch blocks.
        Dump information about loop latch blocks.
        (debug_tree_bb): Rename from tree_debug_bb.  Update all users.
        (debug_tree_bb): Rename from tree_debug_bb.  Update all users.
        (debug_tree_cfg): Rename from tree_debug_cfg.  Update all users.
        (debug_tree_cfg): Rename from tree_debug_cfg.  Update all users.
        (dump_tree_cfg): Rename from tree_dump_cfg.  Update all users.
        (dump_tree_cfg): Rename from tree_dump_cfg.  Update all users.
        By default, dump the function with markers for basic block
        By default, dump the function with markers for basic block
        boundaries.
        boundaries.
        (successor_block): If we can't find a successor following the
        (successor_block): If we can't find a successor following the
        parent chain, return the next block in the linked list of blocks.
        parent chain, return the next block in the linked list of blocks.
        Update documentation comments.
        Update documentation comments.
        (stmt_starts_bb_p): Don't let RETURN_EXPR start a new block.
        (stmt_starts_bb_p): Don't let RETURN_EXPR start a new block.
        (is_latch_block): New function.
        (is_latch_block): New function.
        (first_exec_stmt): Don't treat BIND_EXPR nodes as a special case.
        (first_exec_stmt): Don't treat BIND_EXPR nodes as a special case.
        (first_stmt): Return NULL_TREE if the block does not exist.
        (first_stmt): Return NULL_TREE if the block does not exist.
        (last_stmt): Likewise.
        (last_stmt): Likewise.
        * tree-dfa.c (find_tree_refs): Rename from tree_find_refs.  Update
        * tree-dfa.c (find_tree_refs): Rename from tree_find_refs.  Update
        all users.
        all users.
        (find_refs_in_stmt): Handle BIND_EXPR nodes.
        (find_refs_in_stmt): Handle BIND_EXPR nodes.
        (rli_start): Move from tree-flow-inline.h
        (rli_start): Move from tree-flow-inline.h
        (rli_start_last): Likewise.
        (rli_start_last): Likewise.
        (rli_start_at): Likewise.
        (rli_start_at): Likewise.
        (rli_delete): Likewise.
        (rli_delete): Likewise.
        * tree-flow-inline.h (gsi_start_bb): Handle NULL blocks.
        * tree-flow-inline.h (gsi_start_bb): Handle NULL blocks.
        (ref_list_is_empty): New function.
        (ref_list_is_empty): New function.
        * tree-flow.h (rli_start): Change declaration to extern.
        * tree-flow.h (rli_start): Change declaration to extern.
        (rli_start_last): Likewise.
        (rli_start_last): Likewise.
        (rli_start_at): Likewise.
        (rli_start_at): Likewise.
        (rli_delete): Declare.
        (rli_delete): Declare.
        (latch_block): Declare.
        (latch_block): Declare.
        (is_latch_block): Declare.
        (is_latch_block): Declare.
        (get_last_ref): Change to inline declaration.
        (get_last_ref): Change to inline declaration.
        (get_first_ref): Likewise.
        (get_first_ref): Likewise.
        (ref_list_empty): Declare.
        (ref_list_empty): Declare.
        * tree-optimize.c (delete_tree_ssa): Remove declaration.
        * tree-optimize.c (delete_tree_ssa): Remove declaration.
        * tree-ssa-dce.c (mark_control_parent_necessary): Call gsi_step_bb
        * tree-ssa-dce.c (mark_control_parent_necessary): Call gsi_step_bb
        instead of gsi_step.
        instead of gsi_step.
        (tree_ssa_eliminate_dead_code): Likewise.
        (tree_ssa_eliminate_dead_code): Likewise.
        * tree-ssa.c (compute_tree_rdefs): Rename from compute_tree_rdefs.
        * tree-ssa.c (compute_tree_rdefs): Rename from compute_tree_rdefs.
        Update all users.
        Update all users.
2002-10-22  Diego Novillo  
2002-10-22  Diego Novillo  
        * tree-dfa.c (struct dfa_stats_d): Add field size_tree_refs.
        * tree-dfa.c (struct dfa_stats_d): Add field size_tree_refs.
        (tree_ref_size): New function.
        (tree_ref_size): New function.
        (create_ref): Call it.
        (create_ref): Call it.
        (dump_dfa_stats): Get total size from dfa_stats.size_tree_refs.
        (dump_dfa_stats): Get total size from dfa_stats.size_tree_refs.
        (count_tree_refs): Call tree_ref_size.
        (count_tree_refs): Call tree_ref_size.
        * tree-flow-inline.h (get_last_ref): New function.
        * tree-flow-inline.h (get_last_ref): New function.
        (get_first_ref): New function.
        (get_first_ref): New function.
        * tree-flow.h (struct var_ref_d): Rename from var_ref.
        * tree-flow.h (struct var_ref_d): Rename from var_ref.
        (struct var_def_d): Rename from var_def.
        (struct var_def_d): Rename from var_def.
        (struct var_phi_d): Rename from var_phi.
        (struct var_phi_d): Rename from var_phi.
        (struct var_use_d): Rename from var_use.
        (struct var_use_d): Rename from var_use.
        (struct expr_phi_d): Rename from expr_phi.
        (struct expr_phi_d): Rename from expr_phi.
        (struct expr_use_d): Rename from expr_use.
        (struct expr_use_d): Rename from expr_use.
        * tree-ssa-ccp.c (tree_ssa_ccp): Call get_last_ref.
        * tree-ssa-ccp.c (tree_ssa_ccp): Call get_last_ref.
2002-10-21  Daniel Berlin  
2002-10-21  Daniel Berlin  
        * timevar.def: Add TV_TREE_{PRE,CCP,DCE,CFG,SSA}} timevars.
        * timevar.def: Add TV_TREE_{PRE,CCP,DCE,CFG,SSA}} timevars.
        * tree-optimize.c (optimize_function_tree): Push and pop timevars
        * tree-optimize.c (optimize_function_tree): Push and pop timevars
        for the tree optimizers.
        for the tree optimizers.
2002-10-21  Diego Novillo  
2002-10-21  Diego Novillo  
        * Makefile.in (OBJS): Move tree-mudflap.o ...
        * Makefile.in (OBJS): Move tree-mudflap.o ...
        (C_AND_OBJC_OBJS): ... here.
        (C_AND_OBJC_OBJS): ... here.
2002-10-21  Diego Novillo  
2002-10-21  Diego Novillo  
        * tree-flow-inline.h (rli_start): New function.
        * tree-flow-inline.h (rli_start): New function.
        (rli_start_rev): New function.
        (rli_start_rev): New function.
        (rli_start_at): New function.
        (rli_start_at): New function.
        (rli_after_end): New function.
        (rli_after_end): New function.
        (rli_step): New function.
        (rli_step): New function.
        (rli_step_rev): New function.
        (rli_step_rev): New function.
        (rli_ref): New function.
        (rli_ref): New function.
        * tree-flow.h (struct ref_list_iterator): Declare.
        * tree-flow.h (struct ref_list_iterator): Declare.
        (FOR_REF_BETWEEN, FOR_EACH_REF, FOR_EACH_REF_REV): Replace with new
        (FOR_REF_BETWEEN, FOR_EACH_REF, FOR_EACH_REF_REV): Replace with new
        rli_* iterator functions.  Update all users.
        rli_* iterator functions.  Update all users.
2002-10-21  Frank Ch. Eigler  
2002-10-21  Frank Ch. Eigler  
        * tree-cfg.c (make_blocks): Ignore TRY_FINALLY_EXPR and
        * tree-cfg.c (make_blocks): Ignore TRY_FINALLY_EXPR and
        TRY_CATCH_EXPR.
        TRY_CATCH_EXPR.
        * tree-mudflap.c (mx_register_decls): Ignore local decls
        * tree-mudflap.c (mx_register_decls): Ignore local decls
        of extern variables of unknown size.
        of extern variables of unknown size.
2002-10-20  Daniel Berlin  
2002-10-20  Daniel Berlin  
        * tree-ssa-pre.c (repair_injury): DTRT, rather than abort.
        * tree-ssa-pre.c (repair_injury): DTRT, rather than abort.
        * tree-dfa.c (ref_type_name): E_* don't have these modifier
        * tree-dfa.c (ref_type_name): E_* don't have these modifier
        fields, but may have the same bits set, so don't print the
        fields, but may have the same bits set, so don't print the
        modifiers on them.
        modifiers on them.
        * gimplify.c (create_tmp_var): New function, wraps calls to
        * gimplify.c (create_tmp_var): New function, wraps calls to
        create_tmp_var_1 with pushing/popping of right context.
        create_tmp_var_1 with pushing/popping of right context.
        All internal gimplify.c now use create_tmp_var_1.
        All internal gimplify.c now use create_tmp_var_1.
        (create_tmp_var_noc): New function, create the var without
        (create_tmp_var_noc): New function, create the var without
        pushing/popping, and without exposing internals of create_tmp_var_1.
        pushing/popping, and without exposing internals of create_tmp_var_1.
        Only one use of this.
        Only one use of this.
        * tree-simple.h (create_tmp_var_noc): New prototype.
        * tree-simple.h (create_tmp_var_noc): New prototype.
        * c-simplify.c (simplify_stmt_expr): create_tmp_var changed to
        * c-simplify.c (simplify_stmt_expr): create_tmp_var changed to
        create_tmp_var_noc.
        create_tmp_var_noc.
        * tree-ssa-pre.c: Add WAITING_FOR_DFA_UPDATE around code waiting for DFA
        * tree-ssa-pre.c: Add WAITING_FOR_DFA_UPDATE around code waiting for DFA
        functions to keep refs up to date.
        functions to keep refs up to date.
        (add_call_to_ei): occurs and occurstmts is now an
        (add_call_to_ei): occurs and occurstmts is now an
        array of tree pointers, not trees. Update approriately.
        array of tree pointers, not trees. Update approriately.
        (insert_occ_in_preorder_dt_order_1): Ditto.
        (insert_occ_in_preorder_dt_order_1): Ditto.
        (tree_perform_ssapre): Ditto.
        (tree_perform_ssapre): Ditto.
        (find_use_for_var): Removed function.
        (find_use_for_var): Removed function.
        (orig_expr_map): Removed global, removed uses.
        (orig_expr_map): Removed global, removed uses.
        (struct ei): Added injfixups member.
        (struct ei): Added injfixups member.
        (is_strred_cand): STRIP_WFL the expression.
        (is_strred_cand): STRIP_WFL the expression.
        (calculate_increment): Ditto.
        (calculate_increment): Ditto.
        (is_injuring_def): Ditto.
        (is_injuring_def): Ditto.
        (defs_y_dom_x): Ditto. Also account for fact that y is now a full
        (defs_y_dom_x): Ditto. Also account for fact that y is now a full
        expression, not just an RHS.
        expression, not just an RHS.
        (defs_match_p): Ditto (t2 is no longer just an RHS).
        (defs_match_p): Ditto (t2 is no longer just an RHS).
        (finalize_1): Do insertion by replacement.
        (finalize_1): Do insertion by replacement.
        (repair_injury): Clean up, do insertion by replacement.
        (repair_injury): Clean up, do insertion by replacement.
        (find_reaching_def_of_var): Do backwards search in a cleaner way.
        (find_reaching_def_of_var): Do backwards search in a cleaner way.
        (update_ssa_for_new_use): Change how we do replacement.
        (update_ssa_for_new_use): Change how we do replacement.
        (code_motion): Insertion by replacement. Print EXPR_WFL_LINENO, not
        (code_motion): Insertion by replacement. Print EXPR_WFL_LINENO, not
        STMT_LINENO.
        STMT_LINENO.
        (pre_part_1_trav): Just create_tmp_var will now suffice.
        (pre_part_1_trav): Just create_tmp_var will now suffice.
2002-10-18  Diego Novillo  
2002-10-18  Diego Novillo  
        * tree-dfa.c (find_refs_in_expr): Change type of second argument to
        * tree-dfa.c (find_refs_in_expr): Change type of second argument to
        enum tree_ref_type.  Add third argument ref_mod.  Update all users.
        enum tree_ref_type.  Add third argument ref_mod.  Update all users.
        (create_ref): Add third argument ref_mod.  Decode bitmask to set
        (create_ref): Add third argument ref_mod.  Decode bitmask to set
        the individual bitfields in the new reference.
        the individual bitfields in the new reference.
        * tree-flow-inline.h (is_may_ref): New function.
        * tree-flow-inline.h (is_may_ref): New function.
        (is_may_def): New function.
        (is_may_def): New function.
        (is_may_use): New function.
        (is_may_use): New function.
        (is_partial_ref): New function.
        (is_partial_ref): New function.
        (is_partial_def): New function.
        (is_partial_def): New function.
        (is_partial_use): New function.
        (is_partial_use): New function.
        (is_volatile_ref): New function.
        (is_volatile_ref): New function.
        (is_volatile_def): New function.
        (is_volatile_def): New function.
        (is_volatile_use): New function.
        (is_volatile_use): New function.
        (is_default_def): New function.
        (is_default_def): New function.
        (is_clobbering_def): New function.
        (is_clobbering_def): New function.
        (is_initializing_def): New function.
        (is_initializing_def): New function.
        (is_relocating_def): New function.
        (is_relocating_def): New function.
        (is_addressof_use): New function.
        (is_addressof_use): New function.
        (is_pure_use): New function.
        (is_pure_use): New function.
        * tree-flow.h (V_DEF, V_USE, V_PHI, E_PHI, E_USE, E_KILL): Redefine
        * tree-flow.h (V_DEF, V_USE, V_PHI, E_PHI, E_USE, E_KILL): Redefine
        inside enum tree_ref_type.  Update all users.
        inside enum tree_ref_type.  Update all users.
        (enum tree_ref_type): Define.
        (enum tree_ref_type): Define.
        (TRM_DEFAULT, TRM_CLOBBER, TRM_MAY, TRM_PARTIAL, TRM_INITIAL,
        (TRM_DEFAULT, TRM_CLOBBER, TRM_MAY, TRM_PARTIAL, TRM_INITIAL,
        TRM_VOLATILE, TRM_RELOCATE): Rename from M_*.  Update all users.
        TRM_VOLATILE, TRM_RELOCATE): Rename from M_*.  Update all users.
        (struct tree_ref_common): Change type of field 'type' to enum
        (struct tree_ref_common): Change type of field 'type' to enum
        tree_ref_type.  Update all users.
        tree_ref_type.  Update all users.
        (struct var_ref): Add bitfields 'm_may', 'm_partial' and 'm_volatile'.
        (struct var_ref): Add bitfields 'm_may', 'm_partial' and 'm_volatile'.
        (struct var_def): Add bitfield 'm_default', 'm_clobber', 'm_initial'
        (struct var_def): Add bitfield 'm_default', 'm_clobber', 'm_initial'
        and 'm_relocate'.
        and 'm_relocate'.
        (struct var_use): Add bitfield 'm_addressof'.
        (struct var_use): Add bitfield 'm_addressof'.
        (ref_type): Change return type to enum tree_ref_type.  Update all
        (ref_type): Change return type to enum tree_ref_type.  Update all
        users.
        users.
        (create_ref): Add new argument ref_mod.  Update all users.
        (create_ref): Add new argument ref_mod.  Update all users.
        (function_may_recurse_p): Change return type to bool.  Update all
        (function_may_recurse_p): Change return type to bool.  Update all
        users.
        users.
        (ref_type_name): Change argument type to tree_ref.  Update all
        (ref_type_name): Change argument type to tree_ref.  Update all
        users.
        users.
        (validate_ref_type): Remove.
        (validate_ref_type): Remove.
2002-10-18  Diego Novillo  
2002-10-18  Diego Novillo  
        * cp/Make-lang.in (CXX_C_OBJS): Remove tree-cfg.o, tree-dfa.o,
        * cp/Make-lang.in (CXX_C_OBJS): Remove tree-cfg.o, tree-dfa.o,
        tree-optimize.o, tree-ssa.o, tree-ssa-pre.o, gimplify.o, tree-simple.o,
        tree-optimize.o, tree-ssa.o, tree-ssa-pre.o, gimplify.o, tree-simple.o,
        tree-alias-steen.o, tree-alias-ecr.o, tree-alias-type.o,
        tree-alias-steen.o, tree-alias-ecr.o, tree-alias-type.o,
        disjoint-set.o, tree-ssa-ccp.o, tree-dchain.o, tree-alias-common.o,
        disjoint-set.o, tree-ssa-ccp.o, tree-dchain.o, tree-alias-common.o,
        and tree-ssa-dce.o.
        and tree-ssa-dce.o.
2002-10-17  Diego Novillo  
2002-10-17  Diego Novillo  
        * Makefile.in (TREE_FLOW_H): Add bitmap.h, basic-block.h,
        * Makefile.in (TREE_FLOW_H): Add bitmap.h, basic-block.h,
        hard-reg-set.h and tree-simple.h.  Update all users.
        hard-reg-set.h and tree-simple.h.  Update all users.
        (C_AND_OBJC_OBJS): Move tree-cfg.o, tree-dfa.o,
        (C_AND_OBJC_OBJS): Move tree-cfg.o, tree-dfa.o,
        tree-ssa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
        tree-ssa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
        tree-simple.o, simple-break-elim.o, simple-goto-elim.o, tree-dchain.o,
        tree-simple.o, simple-break-elim.o, simple-goto-elim.o, tree-dchain.o,
        tree-ssa-pre.o, tree-alias-type.o, tree-mudflap.o, gimplify.o,
        tree-ssa-pre.o, tree-alias-type.o, tree-mudflap.o, gimplify.o,
        tree-alias-ecr.o, tree-alias-common.o, tree-alias-steen.o,
        tree-alias-ecr.o, tree-alias-common.o, tree-alias-steen.o,
        disjoint-set.o, tree-ssa-ccp.o and tree-ssa-dce.o ...
        disjoint-set.o, tree-ssa-ccp.o and tree-ssa-dce.o ...
        (OBJS): ... here.
        (OBJS): ... here.
        (gimplify.o): Add dependency on $(TREE_FLOW_H).
        (gimplify.o): Add dependency on $(TREE_FLOW_H).
        (tree-pretty-print.o): New rule.
        (tree-pretty-print.o): New rule.
        (GTFILES): Add tree-flow.h
        (GTFILES): Add tree-flow.h
        * c-config-lang.in (gtfiles): Remove tree-flow.h
        * c-config-lang.in (gtfiles): Remove tree-flow.h
        * c-simplify.c (copy_if_shared_r, unmark_visited_r,
        * c-simplify.c (copy_if_shared_r, unmark_visited_r,
        unshare_all_trees, mark_not_simple): Move ...
        unshare_all_trees, mark_not_simple): Move ...
        * gimplify.c: ... here.
        * gimplify.c: ... here.
        Include tree-flow.h
        Include tree-flow.h
        * tree-flow.h: Include hard-reg-set.h.
        * tree-flow.h: Include hard-reg-set.h.
        * c-common.h (print_c_tree, print_c_node, print_c_node_brief,
        * c-common.h (print_c_tree, print_c_node, print_c_node_brief,
        debug_c_tree, debug_c_node, debug_c_node_brief): Move declarations
        debug_c_tree, debug_c_node, debug_c_node_brief): Move declarations
        from diagnostic.h.
        from diagnostic.h.
        * c-call-graph.c (construct_call_graph): Call get_name.
        * c-call-graph.c (construct_call_graph): Call get_name.
        (print_callee): Likewise.
        (print_callee): Likewise.
        * c-pretty-print.c (print_declaration): Declare static.
        * c-pretty-print.c (print_declaration): Declare static.
        (print_function_decl): Likewise.
        (print_function_decl): Likewise.
        (print_struct_decl): Likewise.
        (print_struct_decl): Likewise.
        (dump_c_tree): Likewise.
        (dump_c_tree): Likewise.
        (dump_c_node): Likewise.
        (dump_c_node): Likewise.
        * diagnostic.h (dump_generic_tree, dump_generic_node,
        * diagnostic.h (dump_generic_tree, dump_generic_node,
        print_generic_tree, print_generic_node, print_generic_node_brief):
        print_generic_tree, print_generic_node, print_generic_node_brief):
        Declare.
        Declare.
        * tree-pretty-print.c: New file.
        * tree-pretty-print.c: New file.
        * c-decl.c: Replace calls to print_c_node with print_generic_node.
        * c-decl.c: Replace calls to print_c_node with print_generic_node.
        * tree-alias-common.c: Likewise.
        * tree-alias-common.c: Likewise.
        * tree-alias-steen.c: Likewise.
        * tree-alias-steen.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-cfg.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-dfa.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-mudflap.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-optimize.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-pre.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        * tree-ssa-dce.c: Likewise.
        Don't include c-common.h nor c-tree.h
        Don't include c-common.h nor c-tree.h
        (tree_ssa_eliminate_dead_code): Don't call COMPOUND_BODY.
        (tree_ssa_eliminate_dead_code): Don't call COMPOUND_BODY.
        Replace ASM_STMT with ASM_EXPR.  Don't check for EXPR_STMT.
        Replace ASM_STMT with ASM_EXPR.  Don't check for EXPR_STMT.
2002-10-17  Daniel Berlin  
2002-10-17  Daniel Berlin  
            Diego Novillo  
            Diego Novillo  
        * tree-cfg.c (remove_bb_ann): Remove.  Update all users.
        * tree-cfg.c (remove_bb_ann): Remove.  Update all users.
        (delete_tree_cfg): Set bb->aux to NULL in all basic blocks.
        (delete_tree_cfg): Set bb->aux to NULL in all basic blocks.
        * tree-dfa.c: Remove extern declaration for tree_find_refs.
        * tree-dfa.c: Remove extern declaration for tree_find_refs.
        (create_ref_list): Allocate new list with ggc_alloc.
        (create_ref_list): Allocate new list with ggc_alloc.
        (empty_ref_list): Just set first and last element to NULL.
        (empty_ref_list): Just set first and last element to NULL.
        (delete_ref_list): Remove.  Update all users.
        (delete_ref_list): Remove.  Update all users.
        (remove_ref_from_list): Don't call free.
        (remove_ref_from_list): Don't call free.
        (add_ref_to_list_begin): Allocate new node with ggc_alloc.
        (add_ref_to_list_begin): Allocate new node with ggc_alloc.
        (add_ref_to_list_end): Likewise.
        (add_ref_to_list_end): Likewise.
        (add_ref_to_list_after): Likewise.
        (add_ref_to_list_after): Likewise.
        (create_ref): Call BITMAP_GGC_ALLOC.
        (create_ref): Call BITMAP_GGC_ALLOC.
        (remove_tree_ann): Remove.  Update all users.
        (remove_tree_ann): Remove.  Update all users.
        (tree_ref_structure): New function.
        (tree_ref_structure): New function.
        * tree-flow.h (edge, basic_block): Forward declare if necessary.
        * tree-flow.h (edge, basic_block): Forward declare if necessary.
        (struct ref_list_node): Mark for garbage collection.
        (struct ref_list_node): Mark for garbage collection.
        (struct ref_list_priv): Likewise.
        (struct ref_list_priv): Likewise.
        (struct tree_ref_common): Likewise.
        (struct tree_ref_common): Likewise.
        (struct var_ref): Likewise.
        (struct var_ref): Likewise.
        (struct var_def): Likewise.
        (struct var_def): Likewise.
        (struct var_phi): Likewise.
        (struct var_phi): Likewise.
        (struct var_use): Likewise.
        (struct var_use): Likewise.
        (struct phi_node_arg_d): Likewise.
        (struct phi_node_arg_d): Likewise.
        (struct expr_ref_common): Likewise.
        (struct expr_ref_common): Likewise.
        (struct expr_phi): Likewise.
        (struct expr_phi): Likewise.
        (struct expr_use): Likewise.
        (struct expr_use): Likewise.
        (union tree_ref_d): Likewise.
        (union tree_ref_d): Likewise.
        (struct tree_ann_d): Likewise.
        (struct tree_ann_d): Likewise.
        (struct bb_ann_def): Likewise.
        (struct bb_ann_def): Likewise.
        (referenced_vars): Likewise.
        (referenced_vars): Likewise.
        (global_var): Likewise.
        (global_var): Likewise.
        (enum tree_ref_structure_enum): New.
        (enum tree_ref_structure_enum): New.
        (call_sites): Remove unused function.
        (call_sites): Remove unused function.
        * tree-inline.c (copy_tree_r): Copy the 'ann' field from tree_common.
        * tree-inline.c (copy_tree_r): Copy the 'ann' field from tree_common.
        * old-tree-inline.c (copy_tree_r): Likewise.
        * old-tree-inline.c (copy_tree_r): Likewise.
        * tree-ssa.c (added): Mark for garbage collection.
        * tree-ssa.c (added): Mark for garbage collection.
        (in_work): Likewise.
        (in_work): Likewise.
        (work_stack): Likewise.
        (work_stack): Likewise.
        (delete_tree_ssa): Set global_var to NULL_TREE.
        (delete_tree_ssa): Set global_var to NULL_TREE.
        * tree.h (struct tree_ann_d): Forward declare.
        * tree.h (struct tree_ann_d): Forward declare.
        (struct tree_common): Rename field 'aux' to 'ann'.  Update all
        (struct tree_common): Rename field 'aux' to 'ann'.  Update all
        users.  Don't mark it 'skip' for garbage collection.
        users.  Don't mark it 'skip' for garbage collection.
2002-10-16  Daniel Berlin  
2002-10-16  Daniel Berlin  
        * tree-dfa.c (compute_may_aliases): Call create/delete_alias_vars
        * tree-dfa.c (compute_may_aliases): Call create/delete_alias_vars
        if flag_tree_points_to is on.
        if flag_tree_points_to is on.
        (may_alias_p): Use points-to info if user asked us to generate it.
        (may_alias_p): Use points-to info if user asked us to generate it.
        * tree-optimize.c (optimize_function_tree): Don't call
        * tree-optimize.c (optimize_function_tree): Don't call
        create_alias_vars here.
        create_alias_vars here.
2002-10-16  Diego Novillo  
2002-10-16  Diego Novillo  
        * tree-cfg.c (make_cond_expr_edges): If the conditional has known
        * tree-cfg.c (make_cond_expr_edges): If the conditional has known
        value, only make the edge to the corresponding branch.
        value, only make the edge to the corresponding branch.
        (tree_delete_bb): Write a warning to the dump file when removing
        (tree_delete_bb): Write a warning to the dump file when removing
        blocks with executable statements.
        blocks with executable statements.
        (first_exec_stmt): Skip over empty BIND_EXPR blocks.
        (first_exec_stmt): Skip over empty BIND_EXPR blocks.
        * tree-dfa.c (find_refs_in_expr): Don't look for references in non
        * tree-dfa.c (find_refs_in_expr): Don't look for references in non
        GIMPLE statements.
        GIMPLE statements.
        (remove_tree_ann): Clear the annotation with memset.
        (remove_tree_ann): Clear the annotation with memset.
        (collect_dfa_stats_r): Don't call tree_annotation.
        (collect_dfa_stats_r): Don't call tree_annotation.
        (find_may_aliases_for): Avoid adding the same alias more than once.
        (find_may_aliases_for): Avoid adding the same alias more than once.
        (may_alias_p): Fix comment grammar.
        (may_alias_p): Fix comment grammar.
        * tree-flow-inline.h (is_exec_stmt): New function.
        * tree-flow-inline.h (is_exec_stmt): New function.
        * tree-flow.h (FOR_EACH_REF): Guard against NULL lists.
        * tree-flow.h (FOR_EACH_REF): Guard against NULL lists.
        (FOR_EACH_REF_REV): Likewise.
        (FOR_EACH_REF_REV): Likewise.
        (is_exec_stmt): Declare.
        (is_exec_stmt): Declare.
        * tree-ssa-ccp.c (visit_phi_node): Reformat debug dumping output.
        * tree-ssa-ccp.c (visit_phi_node): Reformat debug dumping output.
        (visit_expression_for): Move check for clobbering definitions
        (visit_expression_for): Move check for clobbering definitions
        before check for NULL expressions.
        before check for NULL expressions.
        (visit_condexpr_for): Reformat debug dumping output.
        (visit_condexpr_for): Reformat debug dumping output.
        (set_lattice_value): Remove stale comments.
        (set_lattice_value): Remove stale comments.
        (replace_uses_in): Don't clear TF_FOLDED flag from expression.
        (replace_uses_in): Don't clear TF_FOLDED flag from expression.
        * tree-ssa.c (add_phi_node): If possible, associate the PHI node to
        * tree-ssa.c (add_phi_node): If possible, associate the PHI node to
        a statement.
        a statement.
        (create_default_def): Create initial declarations for static
        (create_default_def): Create initial declarations for static
        variables with DECL_INITIAL set.
        variables with DECL_INITIAL set.
        (delete_tree_ssa): Remove annotations from variables.
        (delete_tree_ssa): Remove annotations from variables.
2002-10-16  Daniel Berlin  
2002-10-16  Daniel Berlin  
        * tree-alias-type.c (alias_tvar_new_with_aterm): New function.
        * tree-alias-type.c (alias_tvar_new_with_aterm): New function.
        Update all allocations to allocate right type, rather than the union.
        Update all allocations to allocate right type, rather than the union.
        Update to use macros to access members of alias_typevar.
        Update to use macros to access members of alias_typevar.
        * tree-alias-type.h: Split alias_typevar into a common, an ECR, and
        * tree-alias-type.h: Split alias_typevar into a common, an ECR, and
        an aterm, update all users.
        an aterm, update all users.
        Add macros to access members of union.
        Add macros to access members of union.
        * tree-alias-common.c (create_alias_var): Handle function_decl's
        * tree-alias-common.c (create_alias_var): Handle function_decl's
        properly (needed for proper handling of function pointers).
        properly (needed for proper handling of function pointers).
        Updates for macros to access typevars.
        Updates for macros to access typevars.
        Fix some indentation.
        Fix some indentation.
        * tree-alias-steen.c: Updates for macros to access typevars.
        * tree-alias-steen.c: Updates for macros to access typevars.
2002-10-16  Frank Ch. Eigler  
2002-10-16  Frank Ch. Eigler  
        * c-decl.c (c_expand_body): Enable mudflap, only for gimple.
        * c-decl.c (c_expand_body): Enable mudflap, only for gimple.
        * c-pretty-print.c (dump_c_node): Render try/catch/finally exprs.
        * c-pretty-print.c (dump_c_node): Render try/catch/finally exprs.
        (op_prio): Accept BIND_EXPRs.
        (op_prio): Accept BIND_EXPRs.
        * gcc.c (cpp_unique_options): Make -fmudflap -include mf-runtime.h.
        * gcc.c (cpp_unique_options): Make -fmudflap -include mf-runtime.h.
        * toplev.c (process_options): Complain on -fmudflap -fdisable-simple.
        * toplev.c (process_options): Complain on -fmudflap -fdisable-simple.
        * tree-mudflap.c (*): Reorganize for generic/gimple operation.
        * tree-mudflap.c (*): Reorganize for generic/gimple operation.
        (mf_init_extern_trees): Extract decl nodes from -include'd file.
        (mf_init_extern_trees): Extract decl nodes from -include'd file.
        (mf_external_ref, mf_decl_extern_trees): Removed; updated callers.
        (mf_external_ref, mf_decl_extern_trees): Removed; updated callers.
        (mf_offset_expr_of_array_ref): Don't bother store index type as
        (mf_offset_expr_of_array_ref): Don't bother store index type as
        TREE_PURPOSE.
        TREE_PURPOSE.
        (mf_build_check_statement_for): Use GIMPLE tree types and builders.
        (mf_build_check_statement_for): Use GIMPLE tree types and builders.
        (mx_register_decls): New function, replacing mx_register_decl.
        (mx_register_decls): New function, replacing mx_register_decl.
        (mx_xfn_xform_decls): Support only GIMPLE input tree types.
        (mx_xfn_xform_decls): Support only GIMPLE input tree types.
        (mf_flush_enqueued_calls): Clean up enqueued call statements.
        (mf_flush_enqueued_calls): Clean up enqueued call statements.
2002-10-14  Diego Novillo  
2002-10-14  Diego Novillo  
        * toplev.c (parse_options_and_default_flags): Undo local
        * toplev.c (parse_options_and_default_flags): Undo local
        hack that slipped in the previous commit.
        hack that slipped in the previous commit.
2002-10-14  Diego Novillo  
2002-10-14  Diego Novillo  
        * Makefile.in (c-decl.o): Add dependency on diagnostic.h.
        * Makefile.in (c-decl.o): Add dependency on diagnostic.h.
        * c-decl.c: Include diagnostic.h
        * c-decl.c: Include diagnostic.h
        (c_expand_body): Call get_name.
        (c_expand_body): Call get_name.
        * basic-block.h (struct basic_block_def): Rename head_tree to
        * basic-block.h (struct basic_block_def): Rename head_tree to
        head_tree_p and end_tree to end_tree_p.  Change type to tree *.
        head_tree_p and end_tree to end_tree_p.  Change type to tree *.
        Update all users.
        Update all users.
        (BLOCK_HEAD_TREE): Remove.  Update all users.
        (BLOCK_HEAD_TREE): Remove.  Update all users.
        (BLOCK_END_TREE): Remove.  Update all users.
        (BLOCK_END_TREE): Remove.  Update all users.
        * tree-cfg.c (build_tree_cfg): Return if function body is empty.
        * tree-cfg.c (build_tree_cfg): Return if function body is empty.
        (make_blocks): Change first argument to tree *.  Update all users.
        (make_blocks): Change first argument to tree *.  Update all users.
        (make_bind_expr_blocks): Likewise.
        (make_bind_expr_blocks): Likewise.
        (make_loop_expr_blocks): Likewise.
        (make_loop_expr_blocks): Likewise.
        (make_cond_expr_blocks): Likewise.
        (make_cond_expr_blocks): Likewise.
        (make_switch_expr_blocks): Likewise.
        (make_switch_expr_blocks): Likewise.
        (create_bb): Likewise.
        (create_bb): Likewise.
        (first_exec_block): Likewise.
        (first_exec_block): Likewise.
        (first_exec_stmt): Likewise.
        (first_exec_stmt): Likewise.
        (tree_delete_bb): Use a gimple statement iterator to unmap
        (tree_delete_bb): Use a gimple statement iterator to unmap
        statements.
        statements.
        (insert_stmt_before): Remove empty function.
        (insert_stmt_before): Remove empty function.
        (replace_expr_in_tree): Remove.  Update all users.
        (replace_expr_in_tree): Remove.  Update all users.
        (find_expr_in_tree_helper): Likewise.
        (find_expr_in_tree_helper): Likewise.
        (find_expr_in_tree): Likewise.
        (find_expr_in_tree): Likewise.
        (first_stmt): Call STRIP_NOPS.
        (first_stmt): Call STRIP_NOPS.
        (last_stmt): Call STRIP_NOPS.
        (last_stmt): Call STRIP_NOPS.
        * tree-dfa.c (struct clobber_data_d): Rename parent_stmt to
        * tree-dfa.c (struct clobber_data_d): Rename parent_stmt to
        parent_stmt_p and parent_expr to parent_expr_p.  Change types to
        parent_stmt_p and parent_expr to parent_expr_p.  Change types to
        tree *.  Update all users.
        tree *.  Update all users.
        (find_refs_in_stmt): Change first argument type to tree *.  Update
        (find_refs_in_stmt): Change first argument type to tree *.  Update
        all users.
        all users.
        (find_refs_in_expr): Chnage arguments parent_stmt and parent_expr
        (find_refs_in_expr): Chnage arguments parent_stmt and parent_expr
        to tree *.  Update all users.
        to tree *.  Update all users.
        (create_ref): Don't add the same reference twice on the same list
        (create_ref): Don't add the same reference twice on the same list
        when parent_stmt and parent_expr are the same node.
        when parent_stmt and parent_expr are the same node.
        Don't set output_ref when the parent statement is not in GIMPLE
        Don't set output_ref when the parent statement is not in GIMPLE
        form.
        form.
        (replace_ref_operand_with): Move from tree-flow-inline.h
        (replace_ref_operand_with): Move from tree-flow-inline.h
        (replace_ref_expr_with): New function.
        (replace_ref_expr_with): New function.
        (replace_ref_stmt_with): New function.
        (replace_ref_stmt_with): New function.
        (create_tree_ann): Abort if trying to annotate certain nodes.
        (create_tree_ann): Abort if trying to annotate certain nodes.
        Don't create an empty ref list.
        Don't create an empty ref list.
        In the presence of WFL or NOPS wrappers, add the annotation to the
        In the presence of WFL or NOPS wrappers, add the annotation to the
        inner node.
        inner node.
        (dump_ref): Don't call tree_annotation to access the tree
        (dump_ref): Don't call tree_annotation to access the tree
        annotation.
        annotation.
        * tree-flow.h (struct tree_ref_common): Rename field stmt to stmt_p
        * tree-flow.h (struct tree_ref_common): Rename field stmt to stmt_p
        and field expr to expr_p.  Change types to tree *.  Update all
        and field expr to expr_p.  Change types to tree *.  Update all
        users.
        users.
        (replace_ref_expr_with): Declare.
        (replace_ref_expr_with): Declare.
        (replace_ref_stmt_with): Declare.
        (replace_ref_stmt_with): Declare.
        (insert_stmt_before, insert_stmt_after, replace_expr_in_tree,
        (insert_stmt_before, insert_stmt_after, replace_expr_in_tree,
        find_expr_in_tree): Remove.
        find_expr_in_tree): Remove.
        * tree-flow-inline.h (ref_expr): Return NULL_TREE if expr_p is
        * tree-flow-inline.h (ref_expr): Return NULL_TREE if expr_p is
        NULL.
        NULL.
        (ref_stmt): Return NULL_TREE if stmt_p is NULL.
        (ref_stmt): Return NULL_TREE if stmt_p is NULL.
        (tree_annotation): Call STRIP_WFL and STRIP_NOPS before returning
        (tree_annotation): Call STRIP_WFL and STRIP_NOPS before returning
        the annotation.
        the annotation.
        (add_tree_ref): Remove consistency checks.  Create an empty list
        (add_tree_ref): Remove consistency checks.  Create an empty list
        the first time.
        the first time.
        (get_lineno): Return -1 on NULL_TREE.
        (get_lineno): Return -1 on NULL_TREE.
        (set_output_ref): Remove consistency.
        (set_output_ref): Remove consistency.
        (set_tree_flag): Likewise.
        (set_tree_flag): Likewise.
        (clear_tree_flag): Likewise.
        (clear_tree_flag): Likewise.
        (reset_tree_flags): Likewise.
        (reset_tree_flags): Likewise.
        * tree-simple.h (gimple_stmt_iterator): Rename ptr to tp.  Change
        * tree-simple.h (gimple_stmt_iterator): Rename ptr to tp.  Change
        type to tree *.  Update all users.
        type to tree *.  Update all users.
        (gsi_start): Change argument type to tree *.  Update all users.
        (gsi_start): Change argument type to tree *.  Update all users.
        (gsi_stmt_ptr): New function.
        (gsi_stmt_ptr): New function.
        (gsi_container): New function.
        (gsi_container): New function.
        * tree-optimize.c (optimize_function_tree): Don't test fnbody for
        * tree-optimize.c (optimize_function_tree): Don't test fnbody for
        NULL.
        NULL.
        Re-enable optimizers.
        Re-enable optimizers.
        * tree-ssa-ccp.c: Update documentation comments.
        * tree-ssa-ccp.c: Update documentation comments.
        Don't include c-common.h and c-tree.h.
        Don't include c-common.h and c-tree.h.
        (tree_ssa_ccp): Don't call COMPOUND_BODY.
        (tree_ssa_ccp): Don't call COMPOUND_BODY.
        (ccp_fold): New private function.
        (ccp_fold): New private function.
        (substitute_and_fold): Call it.
        (substitute_and_fold): Call it.
        Call replace_ref_expr_with.
        Call replace_ref_expr_with.
        Set TF_FOLDED flag on the statement, not the expression.
        Set TF_FOLDED flag on the statement, not the expression.
        (visit_assignment_for): Call STRIP_NOPS and STRIP_WFL.
        (visit_assignment_for): Call STRIP_NOPS and STRIP_WFL.
        (evaluate_expr): Call ccp_fold.  Only use the RHS of the simplified
        (evaluate_expr): Call ccp_fold.  Only use the RHS of the simplified
        value in the case of MODIFY_EXPR or INIT_EXPR.
        value in the case of MODIFY_EXPR or INIT_EXPR.
        (restore_expr):
        (restore_expr):
        * tree-ssa-dce.c (mark_control_parent_necessary): Use a gimple
        * tree-ssa-dce.c (mark_control_parent_necessary): Use a gimple
        iterator.
        iterator.
        (tree_ssa_eliminate_dead_code): Likewise.
        (tree_ssa_eliminate_dead_code): Likewise.
        * tree-ssa-pre.c: Disable and add warning comments for out-of-date
        * tree-ssa-pre.c: Disable and add warning comments for out-of-date
        calls to create_ref, find_refs_in_stmt and replace_expr_in_tree.
        calls to create_ref, find_refs_in_stmt and replace_expr_in_tree.
2002-10-12  Daniel Berlin  
2002-10-12  Daniel Berlin  
        * tree-alias-type.h  (alias_typevar_def): Add struct aterm
        * tree-alias-type.h  (alias_typevar_def): Add struct aterm
        as a temporary hack for andersen's analysis.
        as a temporary hack for andersen's analysis.
        * tree-alias-common.c (current_alias_ops): New, use it
        * tree-alias-common.c (current_alias_ops): New, use it
        instead of referring to steen_alias_ops everywhere.
        instead of referring to steen_alias_ops everywhere.
        (get_alias_var): Use STRIP_WFL.
        (get_alias_var): Use STRIP_WFL.
        (find_func_aliases): Ditto.
        (find_func_aliases): Ditto.
        (create_alias_vars): Call init function, move deletion to
        (create_alias_vars): Call init function, move deletion to
        delete_alias_vars.
        delete_alias_vars.
        (delete_alias_vars): New function, move deletion code to here.
        (delete_alias_vars): New function, move deletion code to here.
        (get_virtual_var): Removed.
        (get_virtual_var): Removed.
        (ptr_may_alias_var): New function.
        (ptr_may_alias_var): New function.
        * tree-alias-common.h (struct tree_alias_ops): Add may_alias
        * tree-alias-common.h (struct tree_alias_ops): Add may_alias
        function.
        function.
        * tree-alias-steen.c (steen_may_alias): New function.
        * tree-alias-steen.c (steen_may_alias): New function.
2002-10-10  Falk Hueffner  
2002-10-10  Falk Hueffner  
        * diagnostic.h (dump_c_tree, dump_c_node,
        * diagnostic.h (dump_c_tree, dump_c_node,
        print_declaration, print_function_decl,
        print_declaration, print_function_decl,
        print_struct_decl): Fix argument types.
        print_struct_decl): Fix argument types.
2002-10-10  Diego Novillo  
2002-10-10  Diego Novillo  
        * tree.h (struct tree_common): Rename field unused_0 to
        * tree.h (struct tree_common): Rename field unused_0 to
        not_gimple_flag.
        not_gimple_flag.
        (TREE_NOT_GIMPLE): Define.
        (TREE_NOT_GIMPLE): Define.
        * c-simplify.c (mark_not_simple_r): Remove.  Update all users.
        * c-simplify.c (mark_not_simple_r): Remove.  Update all users.
        (mark_not_simple): Set TREE_NOT_GIMPLE.
        (mark_not_simple): Set TREE_NOT_GIMPLE.
        * gimplify.c (simplify_call_expr): Enable call to mark_not_simple.
        * gimplify.c (simplify_call_expr): Enable call to mark_not_simple.
        * tree-flow.h (TF_NOT_SIMPLE): Remove.  Update all users.
        * tree-flow.h (TF_NOT_SIMPLE): Remove.  Update all users.
        * tree-cfg.c (build_tree_cfg): Rename from tree_find_basic_blocks.
        * tree-cfg.c (build_tree_cfg): Rename from tree_find_basic_blocks.
        Update all users.
        Update all users.
        Find the first executable statement before starting basic block 0.
        Find the first executable statement before starting basic block 0.
        (make_blocks): Do not accept TRY_FINALLY_EXPR and TRY_CATCH_EXPR
        (make_blocks): Do not accept TRY_FINALLY_EXPR and TRY_CATCH_EXPR
        nodes.
        nodes.
        (make_edges): Always create an edge from entry to basic block 0.
        (make_edges): Always create an edge from entry to basic block 0.
        (delete_tree_cfg): Rename from delete_cfg.  Update all uses.
        (delete_tree_cfg): Rename from delete_cfg.  Update all uses.
        (first_exec_stmt): Return the container for the first statement,
        (first_exec_stmt): Return the container for the first statement,
        not the statement itself.
        not the statement itself.
        * tree-dfa.c (tree_find_refs): Re-implement using a GIMPLE
        * tree-dfa.c (tree_find_refs): Re-implement using a GIMPLE
        iterator.
        iterator.
        (find_refs_in_stmt): Handle GIMPLE statements.
        (find_refs_in_stmt): Handle GIMPLE statements.
        (find_refs_in_expr): Call flags_from_decl_or_type when handling
        (find_refs_in_expr): Call flags_from_decl_or_type when handling
        CALL_EXPR expressions.
        CALL_EXPR expressions.
        (create_ref): Call DECL_P.
        (create_ref): Call DECL_P.
        (remove_tree_ann): Call tree_annotation.
        (remove_tree_ann): Call tree_annotation.
        * tree-flow-inline.h (gsi_step_bb): Stop if statement is not inside
        * tree-flow-inline.h (gsi_step_bb): Stop if statement is not inside
        a basic block.
        a basic block.
        * tree-flow.h (build_tree_cfg): Rename from tree_find_basic_blocks.
        * tree-flow.h (build_tree_cfg): Rename from tree_find_basic_blocks.
        Update all users.
        Update all users.
        (delete_tree_cfg): Rename from delete_cfg.
        (delete_tree_cfg): Rename from delete_cfg.
        (tree_find_refs): Declare.
        (tree_find_refs): Declare.
        (build_tree_ssa): Rename from tree_build_ssa.
        (build_tree_ssa): Rename from tree_build_ssa.
        (is_upward_exposed): Remove unused function.
        (is_upward_exposed): Remove unused function.
        * tree-optimize.c (delete_tree_ssa): Remove declaration.
        * tree-optimize.c (delete_tree_ssa): Remove declaration.
        (optimize_function_tree): Re-enable SSA builder.
        (optimize_function_tree): Re-enable SSA builder.
        * tree-simple.h (gsi_container): New function.
        * tree-simple.h (gsi_container): New function.
        * Makefile.in (tree-ssa.o): Remove dependencies on c-common.h and
        * Makefile.in (tree-ssa.o): Remove dependencies on c-common.h and
        c-tree.h.
        c-tree.h.
        * tree-ssa.c: Don't include c-common.h nor c-tree.h.
        * tree-ssa.c: Don't include c-common.h nor c-tree.h.
        (tree_find_refs): Remove declaration.
        (tree_find_refs): Remove declaration.
        (remove_annotations_r): New local function.
        (remove_annotations_r): New local function.
        (build_tree_ssa): Rename from tree_build_ssa.  Update all users.
        (build_tree_ssa): Rename from tree_build_ssa.  Update all users.
        (analyze_rdefs): Don't call prep_stmt.
        (analyze_rdefs): Don't call prep_stmt.
        (is_upward_exposed): Remove unused function.
        (is_upward_exposed): Remove unused function.
        (add_phi_node): Don't associate the PHI node to a statement.
        (add_phi_node): Don't associate the PHI node to a statement.
        (delete_tree_ssa): Receive the function body as argument.
        (delete_tree_ssa): Receive the function body as argument.
        Walk the function body removing annotations from every tree.
        Walk the function body removing annotations from every tree.
2002-10-10  Steven Bosscher  
2002-10-10  Steven Bosscher  
        * tree-ssa-dce (tree_ssa_eliminate_dead_code): Initialize prev to
        * tree-ssa-dce (tree_ssa_eliminate_dead_code): Initialize prev to
        NULL_TREE.
        NULL_TREE.
        Don't close dump_file until end of function.
        Don't close dump_file until end of function.
        Dump the tree after DCE for -fdump-tree-dce.
        Dump the tree after DCE for -fdump-tree-dce.
2002-10-08  Richard Henderson  
2002-10-08  Richard Henderson  
            Jason Merrill  
            Jason Merrill  
            Diego Novillo  
            Diego Novillo  
        * tree-simple.h (gimple_stmt_iterator): New type.
        * tree-simple.h (gimple_stmt_iterator): New type.
        (gsi_start): New function.
        (gsi_start): New function.
        (gsi_after_end): New function.
        (gsi_after_end): New function.
        (gsi_step): New function.
        (gsi_step): New function.
        (gsi_stmt): New function.
        (gsi_stmt): New function.
2002-10-08  Diego Novillo  
2002-10-08  Diego Novillo  
        * calls.c (flags_from_decl_or_type): Make extern.
        * calls.c (flags_from_decl_or_type): Make extern.
        (ECF_*): Move ...
        (ECF_*): Move ...
        * rtl.h (ECF_*): ... here.
        * rtl.h (ECF_*): ... here.
        (flags_from_decl_or_type): Declare.
        (flags_from_decl_or_type): Declare.
        * tree.h (COND_EXPR_COND): Define.
        * tree.h (COND_EXPR_COND): Define.
        (COND_EXPR_THEN): Define.
        (COND_EXPR_THEN): Define.
        (COND_EXPR_ELSE): Define.
        (COND_EXPR_ELSE): Define.
        (LABEL_EXPR_LABEL): Define.
        (LABEL_EXPR_LABEL): Define.
        (optimize_function_tree): Declare.
        (optimize_function_tree): Declare.
2002-10-08  Diego Novillo  
2002-10-08  Diego Novillo  
        * Makefile.in (TREE_FLOW_H): Define.
        * Makefile.in (TREE_FLOW_H): Define.
        (c-decl.o): Remove dependency on tree-optimize.h.
        (c-decl.o): Remove dependency on tree-optimize.h.
        (tree-alias-steen.o, tree-alias-common.o, tree-ssa.o, tree-ssa-pre.o,
        (tree-alias-steen.o, tree-alias-common.o, tree-ssa.o, tree-ssa-pre.o,
         tree-cfg.o, tree-dfa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
         tree-cfg.o, tree-dfa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
         tree-ssa-dce.o, tree-ssa-ccp.o): Depend on $(TREE_FLOW_H).
         tree-ssa-dce.o, tree-ssa-ccp.o): Depend on $(TREE_FLOW_H).
        (tree-cfg.o): Remove dependencies on c-tree.h and c-common.h.
        (tree-cfg.o): Remove dependencies on c-tree.h and c-common.h.
        * c-call-graph.c (construct_call_graph): Disable calls to removed
        * c-call-graph.c (construct_call_graph): Disable calls to removed
        functions.
        functions.
        * c-decl.c: Don't include tree-optimize.h.
        * c-decl.c: Don't include tree-optimize.h.
        (c_expand_body): Enable calls to optimize_function_tree.
        (c_expand_body): Enable calls to optimize_function_tree.
        * c-pretty-print.c (dump_c_node): Fix printf warnings.
        * c-pretty-print.c (dump_c_node): Fix printf warnings.
        Only dump the first node of a COMPOUND_EXPR when brief_dump is set.
        Only dump the first node of a COMPOUND_EXPR when brief_dump is set.
        Use COND_EXPR_COND, COND_EXPR_THEN and COND_EXPR_ELSE accessors.
        Use COND_EXPR_COND, COND_EXPR_THEN and COND_EXPR_ELSE accessors.
        Only dump the opening brace of a BIND_EXPR when brief_dump is set.
        Only dump the opening brace of a BIND_EXPR when brief_dump is set.
        * tree-cfg.c: Don't include tree-optimize.h, c-common.h and c-tree.h.
        * tree-cfg.c: Don't include tree-optimize.h, c-common.h and c-tree.h.
        (binding_stack, make_for_stmt_blocks, make_if_stmt_blocks,
        (binding_stack, make_for_stmt_blocks, make_if_stmt_blocks,
         make_while_stmt_blocks, make_switch_stmt_blocks,
         make_while_stmt_blocks, make_switch_stmt_blocks,
         make_do_stmt_blocks, create_maximal_bb, make_for_stmt_edges,
         make_do_stmt_blocks, create_maximal_bb, make_for_stmt_edges,
         make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
         make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
         make_break_stmt_edges, make_continue_stmt_edges, create_loop_hdr,
         make_break_stmt_edges, make_continue_stmt_edges, create_loop_hdr,
         insert_before_ctrl_stmt, insert_before_normal_stmt,
         insert_before_ctrl_stmt, insert_before_normal_stmt,
         insert_after_ctrl_stmt, insert_after_normal_stmt,
         insert_after_ctrl_stmt, insert_after_normal_stmt,
         insert_after_loop_body, tree_split_bb, stmt_ends_bb_p): Remove.
         insert_after_loop_body, tree_split_bb, stmt_ends_bb_p): Remove.
        Update all users.
        Update all users.
        (STRIP_CONTAINERS): Define.
        (STRIP_CONTAINERS): Define.
        (make_bind_expr_blocks): New local function.
        (make_bind_expr_blocks): New local function.
        (make_cond_expr_blocks): New local function.
        (make_cond_expr_blocks): New local function.
        (make_loop_expr_blocks): New local function.
        (make_loop_expr_blocks): New local function.
        (make_switch_expr_blocks): New local function.
        (make_switch_expr_blocks): New local function.
        (make_loop_expr_edges): New local function.
        (make_loop_expr_edges): New local function.
        (make_cond_expr_edges): New local function.
        (make_cond_expr_edges): New local function.
        (make_case_label_edges): New local function.
        (make_case_label_edges): New local function.
        (first_exec_block): New local function.
        (first_exec_block): New local function.
        (make_goto_expr_edges): Rename from make_goto_stmt_edges.
        (make_goto_expr_edges): Rename from make_goto_stmt_edges.
        (make_blocks): Remove arguments COMPOUND_STMT and PREV_CHAIN_P.
        (make_blocks): Remove arguments COMPOUND_STMT and PREV_CHAIN_P.
        Use gimple_stmt_iterator to iterate over the statements in the
        Use gimple_stmt_iterator to iterate over the statements in the
        function.  Create maximal basic blocks during traversal.
        function.  Create maximal basic blocks during traversal.
        (create_bb): Remove arguments end, prev_chain_p and binding_scope.
        (create_bb): Remove arguments end, prev_chain_p and binding_scope.
        Rename control_parent to parent_block.
        Rename control_parent to parent_block.
        (set_bb_for_stmt): Move from tree-flow.h.
        (set_bb_for_stmt): Move from tree-flow.h.
        (make_edges): Don't assume that basic block 0 contains executable
        (make_edges): Don't assume that basic block 0 contains executable
        statements.
        statements.
        Handle BIND_EXPR nodes.
        Handle BIND_EXPR nodes.
        (make_ctrl_stmt_edges): Handle LOOP_EXPR, COND_EXPR and
        (make_ctrl_stmt_edges): Handle LOOP_EXPR, COND_EXPR and
        SWITCH_EXPR.
        SWITCH_EXPR.
        (make_exit_edges): Handle GOTO_EXPR, CALL_EXPR and RETURN_EXPR.
        (make_exit_edges): Handle GOTO_EXPR, CALL_EXPR and RETURN_EXPR.
        (tree_delete_bb): Call first_stmt and last_stmt.
        (tree_delete_bb): Call first_stmt and last_stmt.
        (block_invalidates_loop): Call last_stmt.
        (block_invalidates_loop): Call last_stmt.
        (replace_expr_in_tree): Don't dump line number information.
        (replace_expr_in_tree): Don't dump line number information.
        (find_expr_in_tree_helper): Don't call statement_code_p.
        (find_expr_in_tree_helper): Don't call statement_code_p.
        (tree_dump_bb): Call get_lineno.
        (tree_dump_bb): Call get_lineno.
        (tree_cfg2dot): Ditto.
        (tree_cfg2dot): Ditto.
        (successor_block): Use a gimple_stmt_iterator to find the first
        (successor_block): Use a gimple_stmt_iterator to find the first
        executable block after the current one.
        executable block after the current one.
        (is_ctrl_stmt): Handle COND_EXPR, LOOP_EXPR and SWITCH_EXPR.
        (is_ctrl_stmt): Handle COND_EXPR, LOOP_EXPR and SWITCH_EXPR.
        (is_ctrl_altering_stmt): Call flags_from_decl_or_type to discover
        (is_ctrl_altering_stmt): Call flags_from_decl_or_type to discover
        non-return functions.
        non-return functions.
        (is_loop_stmt): Handle LOOP_EXPR.
        (is_loop_stmt): Handle LOOP_EXPR.
        (is_computed_goto): Handle GOTO_EXPR.
        (is_computed_goto): Handle GOTO_EXPR.
        (stmt_starts_bb_p): Handle CASE_LABEL_EXPR, LABEL_EXPR, RETURN_EXPR
        (stmt_starts_bb_p): Handle CASE_LABEL_EXPR, LABEL_EXPR, RETURN_EXPR
        and BIND_EXPR.
        and BIND_EXPR.
        (first_exec_stmt): Use a gimple_stmt_iterator to traverse the
        (first_exec_stmt): Use a gimple_stmt_iterator to traverse the
        statements.
        statements.
        (first_stmt): New function.
        (first_stmt): New function.
        (last_stmt): New function.
        (last_stmt): New function.
        * tree-dfa.c: Don't include c-common.h, c-tree.h and
        * tree-dfa.c: Don't include c-common.h, c-tree.h and
        tree-optimize.h.  Include diagnostic.h.
        tree-optimize.h.  Include diagnostic.h.
        (tree_find_refs): Disable.
        (tree_find_refs): Disable.
        (find_refs_in_stmt): Disable.
        (find_refs_in_stmt): Disable.
        (find_refs_in_expr): Don't call prep_stmt.
        (find_refs_in_expr): Don't call prep_stmt.
        (tree_ann): Don't annotate empty_stmt_node.
        (tree_ann): Don't annotate empty_stmt_node.
        (find_declaration): Remove.  Update all users.
        (find_declaration): Remove.  Update all users.
        (dump_ref): Call get_lineno.
        (dump_ref): Call get_lineno.
        (is_visible_to): Always return true.
        (is_visible_to): Always return true.
        * tree-flow.h: Include tree-flow-inline.h, basic-block.h and
        * tree-flow.h: Include tree-flow-inline.h, basic-block.h and
        tree-simple.h.
        tree-simple.h.
        (tree_ann_d): Remove compound_parent field.
        (tree_ann_d): Remove compound_parent field.
        (set_bb_for_stmt): Declare extern.
        (set_bb_for_stmt): Declare extern.
        (compound_parent, set_compound_parent, struct for_header_blocks,
        (compound_parent, set_compound_parent, struct for_header_blocks,
        union header_blocks, prev_chain_p, set_prev_chain_p, binding_scope,
        union header_blocks, prev_chain_p, set_prev_chain_p, binding_scope,
        set_binding_scope, loop_hdr, for_init_bb, set_for_init_bb,
        set_binding_scope, loop_hdr, for_init_bb, set_for_init_bb,
        for_cond_bb, set_for_cond_bb, for_expr_bb, set_for_expr_bb,
        for_cond_bb, set_for_cond_bb, for_expr_bb, set_for_expr_bb,
        end_while_bb, set_end_while_bb, do_cond_bb, set_cond_bb,
        end_while_bb, set_end_while_bb, do_cond_bb, set_cond_bb,
        stmt_ends_bb_p, loop_parent, latch_block, switch_parent,
        stmt_ends_bb_p, loop_parent, latch_block, switch_parent,
        first_exec_stmt, last_exec_stmt, is_exec_stmt,
        first_exec_stmt, last_exec_stmt, is_exec_stmt,
        is_statement_expression, first_non_decl_stmt, first_decl_stmt,
        is_statement_expression, first_non_decl_stmt, first_decl_stmt,
        first_non_label_in_bb, tree_split_bb, find_declaration): Remove.
        first_non_label_in_bb, tree_split_bb, find_declaration): Remove.
        Update all users.
        Update all users.
        (get_lineno): New function.
        (get_lineno): New function.
        (struct bb_ann_def): Rename field parent to parent_block.  Update
        (struct bb_ann_def): Rename field parent to parent_block.  Update
        all users.
        all users.
        Remove fields prev_chain_p, loop_hdr and binding_scope.  Update all
        Remove fields prev_chain_p, loop_hdr and binding_scope.  Update all
        users.
        users.
        (parent_block): Rename from bb_parent.
        (parent_block): Rename from bb_parent.
        (set_parent_block): Rename from set_bb_parent.
        (set_parent_block): Rename from set_bb_parent.
        (prev_chain_p): Remove
        (prev_chain_p): Remove
        (bb_empty_p): Return true if block only contains empty_stmt_node.
        (bb_empty_p): Return true if block only contains empty_stmt_node.
        (gsi_step_bb): New function.
        (gsi_step_bb): New function.
        (gsi_start_bb): New function.
        (gsi_start_bb): New function.
        (gsi_insert_before, gsi_insert_after, gsi_delete, gsi_replace):
        (gsi_insert_before, gsi_insert_after, gsi_delete, gsi_replace):
        Declare.
        Declare.
        (insert_stmt_before): Rename from insert_stmt_tree_before.
        (insert_stmt_before): Rename from insert_stmt_tree_before.
        (insert_stmt_after): Rename from insert_stmt_tree_after.
        (insert_stmt_after): Rename from insert_stmt_tree_after.
        (first_stmt): Declare.
        (first_stmt): Declare.
        (last_stmt): Declare.
        (last_stmt): Declare.
        (tree_perform_ssapre, tree_ssa_ccp,
        (tree_perform_ssapre, tree_ssa_ccp,
        tree_ssa_eliminate_dead_code): Move declaration from tree-optimize.h.
        tree_ssa_eliminate_dead_code): Move declaration from tree-optimize.h.
        * tree-flow-inline.h: New file for all the inline functions
        * tree-flow-inline.h: New file for all the inline functions
        declared in tree-flow.h
        declared in tree-flow.h
        * tree-optimize.c: Don't include tree-optimize.h, c-common.h and
        * tree-optimize.c: Don't include tree-optimize.h, c-common.h and
        c-tree.h.
        c-tree.h.
        (optimize_function_tree): Disable call to double_chain_stmts.
        (optimize_function_tree): Disable call to double_chain_stmts.
        Call init_flow.
        Call init_flow.
        Call tree_find_basic_blocks.
        Call tree_find_basic_blocks.
        Disable calls to tree_build_ssa and optimizers.
        Disable calls to tree_build_ssa and optimizers.
        (build_tree_ssa): Remove.  Update all users.
        (build_tree_ssa): Remove.  Update all users.
        * tree-optimize.h: Remove.
        * tree-optimize.h: Remove.
        * tree-ssa-ccp.c: Don't include tree-optimize.h
        * tree-ssa-ccp.c: Don't include tree-optimize.h
        * tree-ssa-dce.c: Don't include tree-optimize.h.
        * tree-ssa-dce.c: Don't include tree-optimize.h.
        Include diagnostic.h
        Include diagnostic.h
        * tree-ssa-pre.c: Don't include tree-optimize.h.
        * tree-ssa-pre.c: Don't include tree-optimize.h.
        (requires_edge_placement): Disable unused function.
        (requires_edge_placement): Disable unused function.
        (set_need_repair): Disable unused function.
        (set_need_repair): Disable unused function.
        (finalize_1): Disable calls to insert_stmt_tree_before and
        (finalize_1): Disable calls to insert_stmt_tree_before and
        insert_stmt_tree_after.
        insert_stmt_tree_after.
        (repair_injury): Ditto.
        (repair_injury): Ditto.
        (code_motion): Ditto.
        (code_motion): Ditto.
        * tree-ssa.c: Don't include tree-optimize.h.
        * tree-ssa.c: Don't include tree-optimize.h.
        (insert_phi_nodes_for): Remove unused variable.
        (insert_phi_nodes_for): Remove unused variable.
        (add_phi_node): Don't call statement_code_p.
        (add_phi_node): Don't call statement_code_p.
        * cp/optimize.c: Don't include tree-optimize.h
        * cp/optimize.c: Don't include tree-optimize.h
        * tree-alias-common.c: Don't include tree-optimize.h.
        * tree-alias-common.c: Don't include tree-optimize.h.
        (find_func_decls): Disable.
        (find_func_decls): Disable.
        (display_points_to_set): Disable.
        (display_points_to_set): Disable.
        * tree-alias-steen.c: Don't include tree-optimize.h.
        * tree-alias-steen.c: Don't include tree-optimize.h.
2002-10-04  Jason Merrill  
2002-10-04  Jason Merrill  
        * gimplify.c (declare_tmp_vars): Don't add temps to block vars.
        * gimplify.c (declare_tmp_vars): Don't add temps to block vars.
        * tree-inline.c (remap_decls): Split out from remap_block.
        * tree-inline.c (remap_decls): Split out from remap_block.
        (copy_bind_expr): Remap BIND_EXPR_VARS separately from block vars.
        (copy_bind_expr): Remap BIND_EXPR_VARS separately from block vars.
        * c-simplify.c (simplify_expr_stmt): Call set_file_and_line_for_stmt.
        * c-simplify.c (simplify_expr_stmt): Call set_file_and_line_for_stmt.
        * gimplify.c: New file.
        * gimplify.c: New file.
        (push_gimplify_context, pop_gimplify_context): New fns.
        (push_gimplify_context, pop_gimplify_context): New fns.
        (gimple_push_bind_expr, gimple_pop_bind_expr): New fns.
        (gimple_push_bind_expr, gimple_pop_bind_expr): New fns.
        (simplify_bind_expr): Use them.
        (simplify_bind_expr): Use them.
        (gimple_current_bind_expr, gimple_add_tmp_var): New fn.
        (gimple_current_bind_expr, gimple_add_tmp_var): New fn.
        (foreach_stmt): Recurse if necessary.
        (foreach_stmt): Recurse if necessary.
        (various): Use generic interfaces instead of c-specific ones.
        (various): Use generic interfaces instead of c-specific ones.
        * c-simplify.c: Move language-independent code to gimplify.c.
        * c-simplify.c: Move language-independent code to gimplify.c.
        (simplify_c_loop): Use add_tree instead of add_stmt_to_compound.
        (simplify_c_loop): Use add_tree instead of add_stmt_to_compound.
        (various): Use new *_bind_expr interfaces.
        (various): Use new *_bind_expr interfaces.
        * Makefile.in (C_AND_OBJC_OBJS): Add gimplify.o.
        * Makefile.in (C_AND_OBJC_OBJS): Add gimplify.o.
        (gimplify.o): New rule.
        (gimplify.o): New rule.
        * c-decl.c (c_expand_body): Dump trees here.
        * c-decl.c (c_expand_body): Dump trees here.
        * c-simplify.c (simplify_function_body): Not here.
        * c-simplify.c (simplify_function_body): Not here.
2002-10-03  Frank Ch. Eigler  
2002-10-03  Frank Ch. Eigler  
        * tree-mudflap.c (mf_offset_expr_of_array_ref): Don't emit
        * tree-mudflap.c (mf_offset_expr_of_array_ref): Don't emit
        intermediate variables for constant index values.
        intermediate variables for constant index values.
        (mx_xfn_indirect_ref): For constant valid index values and
        (mx_xfn_indirect_ref): For constant valid index values and
        known valid array sizes, omit bounds checks.
        known valid array sizes, omit bounds checks.
2002-10-03  Jason Merrill  
2002-10-03  Jason Merrill  
        * c-simplify.c (simplify_bind_expr): Don't clear TREE_SIDE_EFFECTS
        * c-simplify.c (simplify_bind_expr): Don't clear TREE_SIDE_EFFECTS
        if we have a block.
        if we have a block.
        * c-simplify.c (simplify_expr) [TRY_FINALLY_EXPR]: New case.
        * c-simplify.c (simplify_expr) [TRY_FINALLY_EXPR]: New case.
        * tree-inline.c (copy_body_r) [RETURN_EXPR]: Don't make an extra
        * tree-inline.c (copy_body_r) [RETURN_EXPR]: Don't make an extra
        copy of the MODIFY_EXPR.  Mark the return label used.
        copy of the MODIFY_EXPR.  Mark the return label used.
        (expand_call_inline): Don't push/pop_srcloc.  Only emit the return
        (expand_call_inline): Don't push/pop_srcloc.  Only emit the return
        label if it was used.
        label if it was used.
        * tree-simple.c (right_assocify_expr): Split out from
        * tree-simple.c (right_assocify_expr): Split out from
        rationalize_compound_expr.  Don't move non-matching op0's.
        rationalize_compound_expr.  Don't move non-matching op0's.
        * tree-simple.h: Declare it.
        * tree-simple.h: Declare it.
        * c-simplify.c (simplify_boolean_expr): Call it.
        * c-simplify.c (simplify_boolean_expr): Call it.
        (simplify_cond_expr): Reorganize.  Optimize if (a&&b).
        (simplify_cond_expr): Reorganize.  Optimize if (a&&b).
        * c-simplify.c (wrap_with_wfl): Drop special loop handling.
        * c-simplify.c (wrap_with_wfl): Drop special loop handling.
        (simplify_c_loop): Wrap loop contents in wfls.
        (simplify_c_loop): Wrap loop contents in wfls.
        * c-simplify.c (STRIP_WFL): Move...
        * c-simplify.c (STRIP_WFL): Move...
        * tree.h: ...here.
        * tree.h: ...here.
        * c-common.c (c_walk_subtrees): Don't walk TREE_CHAIN.
        * c-common.c (c_walk_subtrees): Don't walk TREE_CHAIN.
        * tree-inline.c (walk_tree): Call langhook walk_subtrees first.
        * tree-inline.c (walk_tree): Call langhook walk_subtrees first.
        For expressions, walk TREE_CHAIN if it matters.
        For expressions, walk TREE_CHAIN if it matters.
2002-10-01  Frank Ch. Eigler  
2002-10-01  Frank Ch. Eigler  
        * builtins.c (expand_builtin_alloca): Disable if -fmudflap.
        * builtins.c (expand_builtin_alloca): Disable if -fmudflap.
        * tree-mudflap.c (mudflap_enqueue_decl): Tweak logic to include
        * tree-mudflap.c (mudflap_enqueue_decl): Tweak logic to include
        more globals.
        more globals.
        (mx_xfn_indirect_ref): Handle bitfield COMPONENT_REFs; instrument
        (mx_xfn_indirect_ref): Handle bitfield COMPONENT_REFs; instrument
        BIT_FIELD_REF/INDIRECT_REFs.
        BIT_FIELD_REF/INDIRECT_REFs.
2002-10-01  Jason Merrill  
2002-10-01  Jason Merrill  
        * c-decl.c (poplevel): Only add undeclared labels to the toplevel
        * c-decl.c (poplevel): Only add undeclared labels to the toplevel
        block.
        block.
        * c-parse.in (label_decl): Push the declared label.
        * c-parse.in (label_decl): Push the declared label.
        * c-decl.c (c_expand_body): If we've been simplified, use
        * c-decl.c (c_expand_body): If we've been simplified, use
        expand_expr_stmt_value instead.
        expand_expr_stmt_value instead.
        * c-decl.c (c_expand_decl): Rename from c_expand_decl_stmt.
        * c-decl.c (c_expand_decl): Rename from c_expand_decl_stmt.
        Handle all C-specific expansion semantics.
        Handle all C-specific expansion semantics.
        * c-tree.h: Change prototype.
        * c-tree.h: Change prototype.
        * langhooks.h (struct lang_hooks): Add expand_decl hook.
        * langhooks.h (struct lang_hooks): Add expand_decl hook.
        * langhooks.c (lhd_expand_decl): Default version.
        * langhooks.c (lhd_expand_decl): Default version.
        * langhooks-def.h (LANG_HOOKS_EXPAND_DECL): Provide default.
        * langhooks-def.h (LANG_HOOKS_EXPAND_DECL): Provide default.
        * c-lang.c (LANG_HOOKS_EXPAND_DECL): Define.
        * c-lang.c (LANG_HOOKS_EXPAND_DECL): Define.
        * c-semantics.c (lang_expand_decl_stmt): Remove.
        * c-semantics.c (lang_expand_decl_stmt): Remove.
        (genrtl_decl_stmt): Use lang_hooks.expand_decl.
        (genrtl_decl_stmt): Use lang_hooks.expand_decl.
        * Makefile.in (c-semantics.o): Depend on langhooks.h.
        * Makefile.in (c-semantics.o): Depend on langhooks.h.
        * c-objc-common.c (c_objc_common_init): Don't set
        * c-objc-common.c (c_objc_common_init): Don't set
        lang_expand_decl_stmt.
        lang_expand_decl_stmt.
        * c-common.def (ASM_STMT): Only 4 operands.
        * c-common.def (ASM_STMT): Only 4 operands.
        * c-common.h (ASM_CV_QUAL): Remove.
        * c-common.h (ASM_CV_QUAL): Remove.
        (genrtl_asm_stmt): Adjust prototype.
        (genrtl_asm_stmt): Adjust prototype.
        * c-typeck.c (build_asm_stmt): Adjust.
        * c-typeck.c (build_asm_stmt): Adjust.
        * c-semantics.c (genrtl_asm_stmt): Change cv_qualifier parm to
        * c-semantics.c (genrtl_asm_stmt): Change cv_qualifier parm to
        volatile_p.
        volatile_p.
        (expand_stmt): Adjust.
        (expand_stmt): Adjust.
        * c-common.h (SWITCH_COND, SWITCH_BODY, CASE_LOW, CASE_HIGH,
        * c-common.h (SWITCH_COND, SWITCH_BODY, CASE_LOW, CASE_HIGH,
        CASE_LABEL_DECL, GOTO_DESTINATION, ASM_STRING, ASM_OUTPUTS,
        CASE_LABEL_DECL, GOTO_DESTINATION, ASM_STRING, ASM_OUTPUTS,
        ASM_INPUTS, ASM_CLOBBERS, ASM_VOLATILE_P, ASM_INPUT_P): Move to tree.h.
        ASM_INPUTS, ASM_CLOBBERS, ASM_VOLATILE_P, ASM_INPUT_P): Move to tree.h.
        * c-pretty-print.c (newline_and_indent): New fn.
        * c-pretty-print.c (newline_and_indent): New fn.
        (dump_c_tree, dump_c_node): Make spc a plain int.
        (dump_c_tree, dump_c_node): Make spc a plain int.
        (dump_c_node): Use output_add_identifier.
        (dump_c_node): Use output_add_identifier.
        Reorganize for bnw-simple; indent in the enclosing node rather
        Reorganize for bnw-simple; indent in the enclosing node rather
        than the subexpression.
        than the subexpression.
        [FUNCTION_DECL]: Just print the name for now.
        [FUNCTION_DECL]: Just print the name for now.
        [COMPOUND_EXPR, COND_EXPR]: Handle use as statements.
        [COMPOUND_EXPR, COND_EXPR]: Handle use as statements.
        [BIND_EXPR, GOTO_EXPR, EXIT_EXPR, LOOP_EXPR, LABELED_BLOCK_EXPR,
        [BIND_EXPR, GOTO_EXPR, EXIT_EXPR, LOOP_EXPR, LABELED_BLOCK_EXPR,
        EXIT_BLOCK_EXPR, RETURN_EXPR, SWITCH_EXPR, ASM_EXPR,
        EXIT_BLOCK_EXPR, RETURN_EXPR, SWITCH_EXPR, ASM_EXPR,
        CASE_LABEL_EXPR]: Implement.
        CASE_LABEL_EXPR]: Implement.
        (print_declaration): Print 'static'.
        (print_declaration): Print 'static'.
        * c-tree.h: Move c-pretty-print decls to diagnostic.h.
        * c-tree.h: Move c-pretty-print decls to diagnostic.h.
        * expr.c (store_field): Don't always pass want_value==0 to store_expr.
        * expr.c (store_field): Don't always pass want_value==0 to store_expr.
        * expr.c (expand_expr) [EXIT_EXPR]: Handle EXIT_EXPR_IS_LOOP_COND.
        * expr.c (expand_expr) [EXIT_EXPR]: Handle EXIT_EXPR_IS_LOOP_COND.
        * expr.c (expand_expr) [LOOP_EXPR]: Pass exit_flag==0 to
        * expr.c (expand_expr) [LOOP_EXPR]: Pass exit_flag==0 to
        exand_start_loop.
        exand_start_loop.
        [BIND_EXPR]: Adjust for functions-as-trees mode.
        [BIND_EXPR]: Adjust for functions-as-trees mode.
        [COMPOUND_EXPR]: Avoid recursion if possible.
        [COMPOUND_EXPR]: Avoid recursion if possible.
        [SWITCH_EXPR, LABEL_EXPR]: Move handling from java/expr.c.
        [SWITCH_EXPR, LABEL_EXPR]: Move handling from java/expr.c.
        [CASE_LABEL_EXPR, ASM_EXPR]: New handling.
        [CASE_LABEL_EXPR, ASM_EXPR]: New handling.
        * tree.h (struct tree_common): Add visited flag.
        * tree.h (struct tree_common): Add visited flag.
        (TREE_VISITED): New macro.
        (TREE_VISITED): New macro.
        * tree.c (copy_node): Clear TREE_VISITED.
        * tree.c (copy_node): Clear TREE_VISITED.
        * print-tree.c (print_node): Print visted.
        * print-tree.c (print_node): Print visted.
        * stmt.c (expand_asm_expr): New fn.
        * stmt.c (expand_asm_expr): New fn.
        * tree.c (build1): Always set TREE_SIDE_EFFECTS for 's' codes.
        * tree.c (build1): Always set TREE_SIDE_EFFECTS for 's' codes.
        * tree.h (enum tree_index): Add TI_EMPTY_STMT.
        * tree.h (enum tree_index): Add TI_EMPTY_STMT.
        (empty_stmt_node): New macro.
        (empty_stmt_node): New macro.
        * tree.c (build_common_tree_nodes_2): Initialize it.
        * tree.c (build_common_tree_nodes_2): Initialize it.
        * tree.def: Change some codes from 'e' to 's'.
        * tree.def: Change some codes from 'e' to 's'.
        (CASE_LABEL_EXPR, ASM_EXPR): New codes.
        (CASE_LABEL_EXPR, ASM_EXPR): New codes.
        * tree.def (SWITCH_EXPR): Now has three operands.
        * tree.def (SWITCH_EXPR): Now has three operands.
        * tree-inline.c: Retarget to generic trees.  FIXME FIXME.
        * tree-inline.c: Retarget to generic trees.  FIXME FIXME.
        * old-tree-inline.c: Old C/Java-specific inliner.
        * old-tree-inline.c: Old C/Java-specific inliner.
        * Makefile.in (old-tree-inline.o): New rule.
        * Makefile.in (old-tree-inline.o): New rule.
        * c-common.c (c_walk_subtrees): New fn.
        * c-common.c (c_walk_subtrees): New fn.
        (c_tree_chain_matters_p): New fn.
        (c_tree_chain_matters_p): New fn.
        * c-lang.c: Use them for LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
        * c-lang.c: Use them for LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
        and LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P.
        and LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P.
        * c-common.h: Declare them.
        * c-common.h: Declare them.
        (DECL_NUM_STMTS): Move to tree.h.
        (DECL_NUM_STMTS): Move to tree.h.
        * c-decl.c (finish_function): Simplify the function trees.
        * c-decl.c (finish_function): Simplify the function trees.
        * c-objc-common.c (inline_forbidden_p): Look inside BIND_EXPRs
        * c-objc-common.c (inline_forbidden_p): Look inside BIND_EXPRs
        for nested functions.  Don't inline a function with _STMT trees.
        for nested functions.  Don't inline a function with _STMT trees.
        * basic-block.h: Include hard-reg-set.h.
        * basic-block.h: Include hard-reg-set.h.
        * c-decl.c (start_function): Don't call make_decl_rtl.
        * c-decl.c (start_function): Don't call make_decl_rtl.
        (c_expand_body): Call it here instead.
        (c_expand_body): Call it here instead.
        * Makefile.in (explow.o): Depend on langhooks.h.
        * Makefile.in (explow.o): Depend on langhooks.h.
        * unroll.c (copy_loop_body): Don't copy NOTE_INSN_DELETED_LABELs
        * unroll.c (copy_loop_body): Don't copy NOTE_INSN_DELETED_LABELs
        between copy_notes_from and loop_end, either.
        between copy_notes_from and loop_end, either.
2002-09-30  Daniel Berlin  
2002-09-30  Daniel Berlin  
        * tree-ssa-pre.c (repair_injury): Start work on updating SSA
        * tree-ssa-pre.c (repair_injury): Start work on updating SSA
        representation for strength reduction injuries.
        representation for strength reduction injuries.
        Print a new line after outputting tree node in debug statements.
        Print a new line after outputting tree node in debug statements.
        Fix strength reduction of a candidate with two variables (IE a *
        Fix strength reduction of a candidate with two variables (IE a *
        c).
        c).
        Put the repair after the injuring statement, not at the end of the
        Put the repair after the injuring statement, not at the end of the
        block.
        block.
        Break the RHS use lookup if it's defined by a phi.
        Break the RHS use lookup if it's defined by a phi.
        (calculate_increment): Ditto on node printing.
        (calculate_increment): Ditto on node printing.
        (code_motion): Ditto on updating SSA rep for strength reduction
        (code_motion): Ditto on updating SSA rep for strength reduction
        injuries.
        injuries.
        (find_rhs_use_for_var): Rewrite to use maybe_find_rhs_use_for_var.
        (find_rhs_use_for_var): Rewrite to use maybe_find_rhs_use_for_var.
        (maybe_find_rhs_use_for_var): Rename from find_rhs_use_for_var,
        (maybe_find_rhs_use_for_var): Rename from find_rhs_use_for_var,
        don't abort, return NULL.
        don't abort, return NULL.
        (set_var_phis): Simplify break condition.
        (set_var_phis): Simplify break condition.
        Make sure RHS *has* a use before we go and get it.
        Make sure RHS *has* a use before we go and get it.
        (rename2): Ditto on RHS checking.
        (rename2): Ditto on RHS checking.
        When looking up injuring defs, break on phis.
        When looking up injuring defs, break on phis.
        (phi_opnd_from_res): Ditto.
        (phi_opnd_from_res): Ditto.
        (defs_y_dom_x): Ditto.
        (defs_y_dom_x): Ditto.
        (TODO List): Add new TODO to fix the remapping crud.
        (TODO List): Add new TODO to fix the remapping crud.
2002-09-27  Daniel Berlin  
2002-09-27  Daniel Berlin  
        * tree-ssa-pre.c (tree_perform_ssapre): Move insertion into
        * tree-ssa-pre.c (tree_perform_ssapre): Move insertion into
        splay tree inside the is_simple_modify_expr block, to prevent
        splay tree inside the is_simple_modify_expr block, to prevent
        tree check failure.
        tree check failure.
2002-09-26  Daniel Berlin  
2002-09-26  Daniel Berlin  
        * tree-ssa-pre.c (update_phis_in_list): New function.
        * tree-ssa-pre.c (update_phis_in_list): New function.
        (update_ssa_for_new_use): New function.
        (update_ssa_for_new_use): New function.
        (code_motion): Start working on code to update SSA representation.
        (code_motion): Start working on code to update SSA representation.
        (find_reaching_def_of_var): New function.
        (find_reaching_def_of_var): New function.
2002-09-25  Steven Bosscher  
2002-09-25  Steven Bosscher  
        * Makefile.in (tree): Add dependency on c-tree.h
        * Makefile.in (tree): Add dependency on c-tree.h
        * tree-optimize.c: Include c-tree.h
        * tree-optimize.c: Include c-tree.h
        (optimize_function_tree): React to -fdump-tree-optimized.
        (optimize_function_tree): React to -fdump-tree-optimized.
2002-09-25  Daniel Berlin  
2002-09-25  Daniel Berlin  
        * tree-dfa.c (add_list_to_ref_list_end): New function.
        * tree-dfa.c (add_list_to_ref_list_end): New function.
        (add_list_to_ref_list_begin): Ditto.
        (add_list_to_ref_list_begin): Ditto.
        (find_list_node): Handle searching in empty lists.
        (find_list_node): Handle searching in empty lists.
        (find_refs_in_stmt): De-staticify.
        (find_refs_in_stmt): De-staticify.
        * tree-flow.h (add_list_to_ref_list_end): New declaration.
        * tree-flow.h (add_list_to_ref_list_end): New declaration.
        (add_list_to_ref_list_begin): Ditto.
        (add_list_to_ref_list_begin): Ditto.
        (find_refs_in_stmt): Add prototype.
        (find_refs_in_stmt): Add prototype.
2002-09-25  Diego Novillo  
2002-09-25  Diego Novillo  
        * Makefile.in (tree-dfa.o): Depend on flags.h
        * Makefile.in (tree-dfa.o): Depend on flags.h
        * tree-cfg.c (tree_dump_cfg): Alter output format slightly.
        * tree-cfg.c (tree_dump_cfg): Alter output format slightly.
        (block_invalidates_loop): Look for clobbering definitions of
        (block_invalidates_loop): Look for clobbering definitions of
        GLOBAL_VARIABLE.
        GLOBAL_VARIABLE.
        * tree-simple.c (get_base_symbol): Handle EXPR_WITH_FILE_LOCATION
        * tree-simple.c (get_base_symbol): Handle EXPR_WITH_FILE_LOCATION
        nodes.
        nodes.
        * tree-optimize.c (init_tree_flow): Remove.  Update all users.
        * tree-optimize.c (init_tree_flow): Remove.  Update all users.
        (build_tree_ssa): Don't call tree_find_refs.
        (build_tree_ssa): Don't call tree_find_refs.
        Don't call tree_compute_rdefs.
        Don't call tree_compute_rdefs.
        * tree-dfa.c: Include flags.h
        * tree-dfa.c: Include flags.h
        (dump_file): Remove.
        (dump_file): Remove.
        (dump_flags): Remove.
        (dump_flags): Remove.
        (pointer_refs): Remove.
        (pointer_refs): Remove.
        (struct dfa_stats_d): Add fields max_num_phi_args, num_may_alias,
        (struct dfa_stats_d): Add fields max_num_phi_args, num_may_alias,
        max_num_may_alias, num_alias_imm_rdefs and max_num_alias_imm_rdefs.
        max_num_may_alias, num_alias_imm_rdefs and max_num_alias_imm_rdefs.
        Remove field num_fcalls.
        Remove field num_fcalls.
        (dfa_counts): Declare.
        (dfa_counts): Declare.
        (tree_find_refs): Declare.
        (tree_find_refs): Declare.
        (tree_ssa_dump_file): Declare.
        (tree_ssa_dump_file): Declare.
        (tree_ssa_dump_flags): Declare.
        (tree_ssa_dump_flags): Declare.
        (dump_if_different): New function.
        (dump_if_different): New function.
        (add_default_defs): Remove.  Update all users.
        (add_default_defs): Remove.  Update all users.
        (add_call_site_clobbers): Remove.  Update all users.
        (add_call_site_clobbers): Remove.  Update all users.
        (add_ptr_may_refs): Remove.  Update all users.
        (add_ptr_may_refs): Remove.  Update all users.
        (compute_may_aliases): New function.
        (compute_may_aliases): New function.
        (find_may_aliases_for): New function.
        (find_may_aliases_for): New function.
        (add_may_alias): New function.
        (add_may_alias): New function.
        (may_alias_p): New function.
        (may_alias_p): New function.
        (is_visible_to): New function.
        (is_visible_to): New function.
        (get_alias_index): New function.
        (get_alias_index): New function.
        (call_sites): Remove.  Update all users.
        (call_sites): Remove.  Update all users.
        (global_var): Declare.
        (global_var): Declare.
        (E_FCALL): Remove.  Adjust other constants.
        (E_FCALL): Remove.  Adjust other constants.
        (M_INDIRECT): Remove.  Update all users.
        (M_INDIRECT): Remove.  Update all users.
        (M_RELOCATE): Declare.
        (M_RELOCATE): Declare.
        (tree_find_refs): Move debugging dumps to tree_build_ssa.
        (tree_find_refs): Move debugging dumps to tree_build_ssa.
        Move initialization code to init_tree_ssa.
        Move initialization code to init_tree_ssa.
        Call compute_may_aliases.
        Call compute_may_aliases.
        (find_refs_in_expr): For INDIRECT_REF nodes create a reference to
        (find_refs_in_expr): For INDIRECT_REF nodes create a reference to
        the canonical INDIRECT_REF node associated with the pointer symbol.
        the canonical INDIRECT_REF node associated with the pointer symbol.
        Given a pointer p, clobber the canonical INDIRECT_REF of p after
        Given a pointer p, clobber the canonical INDIRECT_REF of p after
        creating a V_DEF for p.
        creating a V_DEF for p.
        For CALL_EXPR nodes, if the called function is not pure nor
        For CALL_EXPR nodes, if the called function is not pure nor
        const, create a use and a clobbering definition to GLOBAL_VAR.
        const, create a use and a clobbering definition to GLOBAL_VAR.
        (create_ref): Allow INDIRECT_REF variables.
        (create_ref): Allow INDIRECT_REF variables.
        (add_phi_arg): Keep track of number of PHI arguments created.
        (add_phi_arg): Keep track of number of PHI arguments created.
        (function_may_recurse_p): Look for clobbering definitions to
        (function_may_recurse_p): Look for clobbering definitions to
        GLOBAL_VAR.
        GLOBAL_VAR.
        (get_fcalls): Remove unused function.
        (get_fcalls): Remove unused function.
        (is_pure_fcall): Remove unused function.
        (is_pure_fcall): Remove unused function.
        (fcall_takes_ref_args): Remove unused function.
        (fcall_takes_ref_args): Remove unused function.
        (find_declaration): Stop iterating at ENTRY_BLOCK_PTR.
        (find_declaration): Stop iterating at ENTRY_BLOCK_PTR.
        (debug_variable): New function.
        (debug_variable): New function.
        (dump_variable): New function.
        (dump_variable): New function.
        (dump_referenced_vars): Call it.
        (dump_referenced_vars): Call it.
        (dump_phi_args): Don't dump NULL arguments.
        (dump_phi_args): Don't dump NULL arguments.
        (PERCENT): Define.
        (PERCENT): Define.
        (dump_dfa_stats): Re-format output.
        (dump_dfa_stats): Re-format output.
        Add new counters.
        Add new counters.
        Call dump_if_different.
        Call dump_if_different.
        (collect_dfa_stats): Also recurse into GLOBAL_VAR.
        (collect_dfa_stats): Also recurse into GLOBAL_VAR.
        (collect_dfa_stats_r): Collect may-alias information.
        (collect_dfa_stats_r): Collect may-alias information.
        (count_tree_refs): Collect information about def-def links for
        (count_tree_refs): Collect information about def-def links for
        aliases.
        aliases.
        Keep track of maximum values for number of PHI arguments, aliases
        Keep track of maximum values for number of PHI arguments, aliases
        and def-def links.
        and def-def links.
        (ref_type_name): Handle M_RELOCATE.
        (ref_type_name): Handle M_RELOCATE.
        (validate_ref_type): Ditto.
        (validate_ref_type): Ditto.
        * tree-ssa.c: Add more documentation.
        * tree-ssa.c: Add more documentation.
        (tree_ssa_dump_file): Rename from dump_file.  Declare extern.
        (tree_ssa_dump_file): Rename from dump_file.  Declare extern.
        (tree_ssa_dump_flags): Rename from dump_flags.  Declare extern.
        (tree_ssa_dump_flags): Rename from dump_flags.  Declare extern.
        (added): New local varray.
        (added): New local varray.
        (in_work): New local varray.
        (in_work): New local varray.
        (work_stack): New local varray.
        (work_stack): New local varray.
        (dfa_counts): Declare.
        (dfa_counts): Declare.
        (insert_phi_nodes_for): New local function.
        (insert_phi_nodes_for): New local function.
        (add_phi_node): New local function.
        (add_phi_node): New local function.
        (set_ssa_links): New local function.
        (set_ssa_links): New local function.
        (set_alias_imm_reaching_def): New local function.
        (set_alias_imm_reaching_def): New local function.
        (create_default_def): New local function.
        (create_default_def): New local function.
        (init_tree_ssa): New local function.
        (init_tree_ssa): New local function.
        (tree_find_refs): Relocate declaration from tree-flow.h
        (tree_find_refs): Relocate declaration from tree-flow.h
        (tree_build_ssa): Call init_tree_ssa.
        (tree_build_ssa): Call init_tree_ssa.
        Call tree_find_refs.
        Call tree_find_refs.
        Process all SSA-related dump options.
        Process all SSA-related dump options.
        (insert_phi_nodes): Rename from insert_phi_terms.  Update all
        (insert_phi_nodes): Rename from insert_phi_terms.  Update all
        users.
        users.
        Call insert_phi_nodes_for.
        Call insert_phi_nodes_for.
        (build_fud_chains): Add more documentation.
        (build_fud_chains): Add more documentation.
        Initialize save_chain to 0.
        Initialize save_chain to 0.
        (search_fud_chains): Add more documentation.
        (search_fud_chains): Add more documentation.
        Call set_ssa_links.
        Call set_ssa_links.
        Call create_default_def.
        Call create_default_def.
        (tree_compute_rdefs): Initialize array marked to 0.
        (tree_compute_rdefs): Initialize array marked to 0.
        (follow_chain): Follow def-def chains for non-killing definitions
        (follow_chain): Follow def-def chains for non-killing definitions
        for aliases.
        for aliases.
        (dump_reaching_defs): Call dump_variable.
        (dump_reaching_defs): Call dump_variable.
        * tree-flow.h (E_FCALL): Remove.  Update all users.
        * tree-flow.h (E_FCALL): Remove.  Update all users.
        (M_INDIRECT): Remove.  Update all users.
        (M_INDIRECT): Remove.  Update all users.
        (M_RELOCATE): Declare.
        (M_RELOCATE): Declare.
        (struct var_ref): Add field alias_imm_rdefs.
        (struct var_ref): Add field alias_imm_rdefs.
        (alias_imm_reaching_def): New inline function.
        (alias_imm_reaching_def): New inline function.
        (struct tree_ann_d): Add field indirect_var.
        (struct tree_ann_d): Add field indirect_var.
        Add field may_aliases.
        Add field may_aliases.
        (enum tree_flags): Relocate.
        (enum tree_flags): Relocate.
        (indirect_var): New inline function.
        (indirect_var): New inline function.
        (set_indirect_var): New inline function.
        (set_indirect_var): New inline function.
        (may_alias): New inline function.
        (may_alias): New inline function.
        (num_may_alias): New inline function.
        (num_may_alias): New inline function.
        (struct dfa_counts_d): Declare.
        (struct dfa_counts_d): Declare.
        (global_var): Declare.
        (global_var): Declare.
        (FCALL_NON_PURE, FCALL_PURE, FCALL_BUILT_IN): Remove.
        (FCALL_NON_PURE, FCALL_PURE, FCALL_BUILT_IN): Remove.
        (tree_find_refs): Move to tree-ssa.c.
        (tree_find_refs): Move to tree-ssa.c.
        (dump_variable): Declare.
        (dump_variable): Declare.
        (debug_variable): Declare.
        (debug_variable): Declare.
        (get_fcalls): Remove.
        (get_fcalls): Remove.
        (is_pure_fcall): Remove.
        (is_pure_fcall): Remove.
        (fcall_takes_ref_args): Remove.
        (fcall_takes_ref_args): Remove.
        (ref_defines): Declare.
        (ref_defines): Declare.
        (is_killing_def): Declare.
        (is_killing_def): Declare.
        (get_alias_index): Declare.
        (get_alias_index): Declare.
        (delete_tree_ssa): Rename from delete_ssa.  Update all users.
        (delete_tree_ssa): Rename from delete_ssa.  Update all users.
        (set_currdef_for): Allow INDIRECT_REF nodes.
        (set_currdef_for): Allow INDIRECT_REF nodes.
        (bb_annotation): Don't create a new one if the block didn't have an
        (bb_annotation): Don't create a new one if the block didn't have an
        annotation already.
        annotation already.
        * tree-ssa-ccp.c (substitute_and_fold): Rename from
        * tree-ssa-ccp.c (substitute_and_fold): Rename from
        ssa_ccp_substitute_constants.  Update all users.
        ssa_ccp_substitute_constants.  Update all users.
        Call replace_uses_in.
        Call replace_uses_in.
        (replace_uses_in): New local function.
        (replace_uses_in): New local function.
        (evaluate_expr): Call it.
        (evaluate_expr): Call it.
        (initialize): Call get_base_symbol.
        (initialize): Call get_base_symbol.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Don't handle
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Don't handle
        E_FCALL.
        E_FCALL.
2002-09-22  Diego Novillo  
2002-09-22  Diego Novillo  
        * Makefile.in (tree-dfa.o): Depend on hashtab.h.
        * Makefile.in (tree-dfa.o): Depend on hashtab.h.
        * c-simplify.c (get_name): Declare extern.
        * c-simplify.c (get_name): Declare extern.
        * tree-cfg.c (tree_dump_cfg): Call it.
        * tree-cfg.c (tree_dump_cfg): Call it.
        (tree_cfg2dot): Call it.
        (tree_cfg2dot): Call it.
        * tree-ssa-ccp.c (tree_ssa_ccp): Call get_name.
        * tree-ssa-ccp.c (tree_ssa_ccp): Call get_name.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Call get_name.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Call get_name.
        * tree-ssa-pre.c (tree_perform_ssapre): Call get_name.
        * tree-ssa-pre.c (tree_perform_ssapre): Call get_name.
        * tree-ssa.c (analyze_rdefs): Call get_name.
        * tree-ssa.c (analyze_rdefs): Call get_name.
        (dump_reaching_defs): Call get_name.
        (dump_reaching_defs): Call get_name.
        (dump_tree_ssa): Call get_name.
        (dump_tree_ssa): Call get_name.
        * tree.h (get_name): Declare.
        * tree.h (get_name): Declare.
        * tree-dfa.c: Include "hashtab.h"
        * tree-dfa.c: Include "hashtab.h"
        (struct dfa_stats_d): New.
        (struct dfa_stats_d): New.
        (collect_dfa_stats): New local function.
        (collect_dfa_stats): New local function.
        (collect_dfa_stats_r): New local function.
        (collect_dfa_stats_r): New local function.
        (count_tree_refs): New local function.
        (count_tree_refs): New local function.
        (count_ref_list_nodes): New local function.
        (count_ref_list_nodes): New local function.
        (tree_find_refs): Call dump_begin on entry to the function.
        (tree_find_refs): Call dump_begin on entry to the function.
        (dump_referenced_vars): Call get_name.
        (dump_referenced_vars): Call get_name.
        (SCALE): Declare.
        (SCALE): Declare.
        (LABEL): Declare.
        (LABEL): Declare.
        (dump_dfa_stats): New function.
        (dump_dfa_stats): New function.
        (debug_dfa_stats): New function.
        (debug_dfa_stats): New function.
        * tree-dump.c (struct dump_option_value_info): Add entry for TDF_STATS.
        * tree-dump.c (struct dump_option_value_info): Add entry for TDF_STATS.
        * tree-flow.h (has_annotation): Remove.  Update all users.
        * tree-flow.h (has_annotation): Remove.  Update all users.
        (dump_dfa_stats): Declare.
        (dump_dfa_stats): Declare.
        (debug_dfa_stats): Declare.
        (debug_dfa_stats): Declare.
        (tree_annotation): Don't create one if the tree doesn't have one
        (tree_annotation): Don't create one if the tree doesn't have one
        already.  Update all users to new semantics.
        already.  Update all users to new semantics.
        * tree-ssa-dce.c (print_stats): Dump if dump_flags has TDF_STATS bit
        * tree-ssa-dce.c (print_stats): Dump if dump_flags has TDF_STATS bit
        set.
        set.
        * tree-ssa.c (tree_build_ssa): Open dump file on entry.
        * tree-ssa.c (tree_build_ssa): Open dump file on entry.
        Call dump_dfa_stats if dump_flags has TDF_STATS bit set.
        Call dump_dfa_stats if dump_flags has TDF_STATS bit set.
        Call dump_tree_ssa if dump_flags has TDF_DETAILS bit set.
        Call dump_tree_ssa if dump_flags has TDF_DETAILS bit set.
        * tree.h (TDF_STATS): Define.
        * tree.h (TDF_STATS): Define.
        * doc/invoke.texi: Document 'stats' flag for -fdump-tree.
        * doc/invoke.texi: Document 'stats' flag for -fdump-tree.
        * tree-dfa.c (next_tree_ref_id): Change type to unsigned long.
        * tree-dfa.c (next_tree_ref_id): Change type to unsigned long.
        Update all users.
        Update all users.
        tree-flow.h (tree_ref_common): Change type of field 'id' to
        tree-flow.h (tree_ref_common): Change type of field 'id' to
        unsigned long.  Update all users.
        unsigned long.  Update all users.
        (ref_id): Change return type to unsigned long.  Update all users.
        (ref_id): Change return type to unsigned long.  Update all users.
2002-09-21  Daniel Berlin  
2002-09-21  Daniel Berlin  
        * tree-ssa-pre.c (struct expr_info): Add repaired member.
        * tree-ssa-pre.c (struct expr_info): Add repaired member.
        (repair_injury): Track which injuries we repaired, so we don't
        (repair_injury): Track which injuries we repaired, so we don't
        repair them > 1 time.
        repair them > 1 time.
2002-09-20  Diego Novillo  
2002-09-20  Diego Novillo  
        * c-pretty-print.c (dump_c_node): Fix call to REAL_VALUE_TO_DECIMAL.
        * c-pretty-print.c (dump_c_node): Fix call to REAL_VALUE_TO_DECIMAL.
2002-09-20  Diego Novillo  
2002-09-20  Diego Novillo  
        * tree-dfa.c (find_refs_in_stmt): Fix botched call to
        * tree-dfa.c (find_refs_in_stmt): Fix botched call to
        clobber_vars_r with CLEANUP_STMT nodes.
        clobber_vars_r with CLEANUP_STMT nodes.
2002-09-20  Diego Novillo  
2002-09-20  Diego Novillo  
        * toplev.c (flag_tree_ssa): Remove.  Update all users.
        * toplev.c (flag_tree_ssa): Remove.  Update all users.
2002-09-20  Frank Ch. Eigler  
2002-09-20  Frank Ch. Eigler  
        * gcc.c (cc1_options): Make -fmudflap imply -fno-merge-constants.
        * gcc.c (cc1_options): Make -fmudflap imply -fno-merge-constants.
        * varasm.c (categorize_decl_for_section): Likewise, for strings.
        * varasm.c (categorize_decl_for_section): Likewise, for strings.
        * tree-mudflap.c (mudflap_enqueue_decl): Don't be interested
        * tree-mudflap.c (mudflap_enqueue_decl): Don't be interested
        in !TREE_USED decls.  Fix minor type warning.
        in !TREE_USED decls.  Fix minor type warning.
        (mf_offset_expr_of_array_ref): Create explicit temporary variables
        (mf_offset_expr_of_array_ref): Create explicit temporary variables
        for array index expressions instead of SAVE_EXPRs.  Update callers.
        for array index expressions instead of SAVE_EXPRs.  Update callers.
        (mf_build_check_statement_for): Insert temp variables.
        (mf_build_check_statement_for): Insert temp variables.
        (mx_xfn_indirect_ref): Correct recursion-protection checking
        (mx_xfn_indirect_ref): Correct recursion-protection checking
        sequence.  Tweak array check-base calculation back to "&array[0]".
        sequence.  Tweak array check-base calculation back to "&array[0]".
        (*): Use build_function_type_list instead of build_function_type.
        (*): Use build_function_type_list instead of build_function_type.
        (mx_external_ref): Remove unused parameter.  Update callers.
        (mx_external_ref): Remove unused parameter.  Update callers.
2002-09-19  Diego Novillo  
2002-09-19  Diego Novillo  
        * c-decl.c (c_expand_body): Invoke tree optimizers with -O1 and
        * c-decl.c (c_expand_body): Invoke tree optimizers with -O1 and
        above.
        above.
        * flags.h (flag_tree_ssa): Remove.
        * flags.h (flag_tree_ssa): Remove.
        * tree-cfg.c (find_expr_in_tree_helper): Change last argument type
        * tree-cfg.c (find_expr_in_tree_helper): Change last argument type
        to int.
        to int.
        * tree-dfa.c (create_ref): Ditto.
        * tree-dfa.c (create_ref): Ditto.
        * tree-flow.h (num_referenced_vars): Change type to unsigned long.
        * tree-flow.h (num_referenced_vars): Change type to unsigned long.
        * doc/invoke.texi (-ftree-ssa): Remove.
        * doc/invoke.texi (-ftree-ssa): Remove.
        (-fdump-tree-{pre,ccp,dce}): Add to the summary section.
        (-fdump-tree-{pre,ccp,dce}): Add to the summary section.
        (-fdump-tree-xxx-details): Update documentation.
        (-fdump-tree-xxx-details): Update documentation.
        (-fdump-tree-ccp): Document.
        (-fdump-tree-ccp): Document.
        (-fdump-tree-simple): Move elsewhere.
        (-fdump-tree-simple): Move elsewhere.
2002-09-19  Richard Henderson  
2002-09-19  Richard Henderson  
        * function.c (insns_for_mem_hash): Cast to size_t first.
        * function.c (insns_for_mem_hash): Cast to size_t first.
        * tree-dfa.c (num_referenced_vars): Unsigned long, not size_t.
        * tree-dfa.c (num_referenced_vars): Unsigned long, not size_t.
        (dump_referenced_vars): Use %lu for it.
        (dump_referenced_vars): Use %lu for it.
        (dump_ref): Use HOST_WIDE_INT_PRINT_DEC.
        (dump_ref): Use HOST_WIDE_INT_PRINT_DEC.
        * tree-nomudflap.c (mudflap_c_function): Use ATTRIBUTE_UNUSED.
        * tree-nomudflap.c (mudflap_c_function): Use ATTRIBUTE_UNUSED.
        (mudflap_enqueue_decl, mudflap_enqueue_constant): Likewise.
        (mudflap_enqueue_decl, mudflap_enqueue_constant): Likewise.
        * tree-ssa-pre.c (compute_idfs): Cast to size_t first.
        * tree-ssa-pre.c (compute_idfs): Cast to size_t first.
        * tree-optimize.c (optimize_function_tree): Fix missed renamings.
        * tree-optimize.c (optimize_function_tree): Fix missed renamings.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
        * tree-ssa-pre.c (tree_perform_ssapre): Likewise.
2002-09-19  Jeff Law 
2002-09-19  Jeff Law 
        * tree-dfa.c (find_refs_in_stmt): Search for references in the call
        * tree-dfa.c (find_refs_in_stmt): Search for references in the call
        address of a CALL_EXPR.
        address of a CALL_EXPR.
2002-09-19  Daniel Berlin 
2002-09-19  Daniel Berlin 
        * toplev.c: tree-ssa-* -> tree-*.
        * toplev.c: tree-ssa-* -> tree-*.
        * doc/invoke.texi: Ditto.
        * doc/invoke.texi: Ditto.
2002-09-19  Daniel Berlin 
2002-09-19  Daniel Berlin 
        * flags.h: flag_tree_ssa_* -> flag_tree_*.
        * flags.h: flag_tree_ssa_* -> flag_tree_*.
        * toplev.c: Ditto.
        * toplev.c: Ditto.
        * tree-optimize.c: Ditto.
        * tree-optimize.c: Ditto.
        * tree-dump.c: dump-tree-ssa-* -> dump-tree-*.
        * tree-dump.c: dump-tree-ssa-* -> dump-tree-*.
        TDI_ssa_* -> TDI_*.
        TDI_ssa_* -> TDI_*.
        * tree.h: Ditto
        * tree.h: Ditto
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Fix dump handling.
        * tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Fix dump handling.
2002-09-18  Daniel Berlin 
2002-09-18  Daniel Berlin 
        * tree-dump.c (dump_files): Use dump-tree-ssa-??? for the option names
        * tree-dump.c (dump_files): Use dump-tree-ssa-??? for the option names
        and "ssa-???" for the dump files.
        and "ssa-???" for the dump files.
        * tree.h: TDI_ccp and TDI_dce -> TDI_ssa_ccp and TDI_ssa_dce.
        * tree.h: TDI_ccp and TDI_dce -> TDI_ssa_ccp and TDI_ssa_dce.
        * tree-ssa-ccp.c: TDI_ccp->TDI_ssa_ccp.
        * tree-ssa-ccp.c: TDI_ccp->TDI_ssa_ccp.
2002-09-18  Daniel Berlin 
2002-09-18  Daniel Berlin 
        * tree-dump.c: Fix order of dump files
        * tree-dump.c: Fix order of dump files
2002-09-17  Daniel Berlin 
2002-09-17  Daniel Berlin 
        * tree-ssa-pre.c: Remove a lot of finding refs in statements junk.
        * tree-ssa-pre.c: Remove a lot of finding refs in statements junk.
        Start on strength reduction.
        Start on strength reduction.
        Only generate simple statements.
        Only generate simple statements.
        Remove EXPR* macros in favor of inline functions.
        Remove EXPR* macros in favor of inline functions.
        Update comparisons and sets to 1 and 0 to true and false where
        Update comparisons and sets to 1 and 0 to true and false where
        approriate.
        approriate.
        (toplevel): Add DEBUGGING_STRRED define (temporary, for
        (toplevel): Add DEBUGGING_STRRED define (temporary, for
        implementation debugging, *not* useful as a dump option).
        implementation debugging, *not* useful as a dump option).
        Add TODO notes.
        Add TODO notes.
        Add global avdefs, orig_expr_map, need_repair_map,
        Add global avdefs, orig_expr_map, need_repair_map,
        strred_candidate.
        strred_candidate.
        (set_var_phis): Add struct expr_info * argument.
        (set_var_phis): Add struct expr_info * argument.
        Update to handle injuring definitions.
        Update to handle injuring definitions.
        (defs_y_dom_x): Ditto.
        (defs_y_dom_x): Ditto.
        (phi_opnd_from_res): Ditto.
        (phi_opnd_from_res): Ditto.
        (phi_for_operand): Remove extra \.
        (phi_for_operand): Remove extra \.
        (find_tree_ref_for_var): Renamed to find_use_for_var. Update all
        (find_tree_ref_for_var): Renamed to find_use_for_var. Update all
        callers.
        callers.
        Use orig_expr_map to lookup original expression, remove statement
        Use orig_expr_map to lookup original expression, remove statement
        searching gunk.
        searching gunk.
        (find_rhs_use_for_var): New function.
        (find_rhs_use_for_var): New function.
        (is_strred_cand): New function.
        (is_strred_cand): New function.
        (is_injuring_def): New function.
        (is_injuring_def): New function.
        (calculate_increment): New function.
        (calculate_increment): New function.
        (repair_injury): New function.
        (repair_injury): New function.
        (set_need_repair): New function.
        (set_need_repair): New function.
        (struct expr_info): Add strred_cand member.
        (struct expr_info): Add strred_cand member.
        (rename_2): Update to handle injuring definitions.
        (rename_2): Update to handle injuring definitions.
        (expr_phi_insertion): Ditto.
        (expr_phi_insertion): Ditto.
        (code_motion): Update to repair injuries.
        (code_motion): Update to repair injuries.
        Only insert SIMPLE statements.
        Only insert SIMPLE statements.
        Free avdefs here now.
        Free avdefs here now.
        (finalize_1): Don't free avdefs anymore here.
        (finalize_1): Don't free avdefs anymore here.
        (tree_perform_ssapre): Record original expresion for
        (tree_perform_ssapre): Record original expresion for
        find_use_for_var's benefit.
        find_use_for_var's benefit.
        Determine strength reduction candidates.
        Determine strength reduction candidates.
        * tree-flow.h: Remove EXPR* macros in favor of inline functions.
        * tree-flow.h: Remove EXPR* macros in favor of inline functions.
        Remove E_INJ.
        Remove E_INJ.
        * tree-dfa.c: Change EXPR* macros to the new functions.
        * tree-dfa.c: Change EXPR* macros to the new functions.
        Remove E_INJ.
        Remove E_INJ.
2002-09-18  Diego Novillo  
2002-09-18  Diego Novillo  
        * tree-dfa.c (M_ADDRESSOF): Define.
        * tree-dfa.c (M_ADDRESSOF): Define.
        (find_refs_in_expr): Create addressof-use references for ADDR_EXPR
        (find_refs_in_expr): Create addressof-use references for ADDR_EXPR
        nodes.
        nodes.
        Don't create references for FUNCTION_DECL nodes.
        Don't create references for FUNCTION_DECL nodes.
        (ref_type_name): Handle M_ADDRESSOF.
        (ref_type_name): Handle M_ADDRESSOF.
        (validate_ref_type): Ditto.
        (validate_ref_type): Ditto.
        (clobber_vars_r): Don't clobber FUNCTION_DECL nodes.
        (clobber_vars_r): Don't clobber FUNCTION_DECL nodes.
        * tree-flow.h (M_ADDRESSOF): Declare.
        * tree-flow.h (M_ADDRESSOF): Declare.
2002-09-17  Diego Novillo  
2002-09-17  Diego Novillo  
        * doc/invoke.texi: Document -ftree-ssa-dce and -fdump-tree-dce.
        * doc/invoke.texi: Document -ftree-ssa-dce and -fdump-tree-dce.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-dce.o.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-dce.o.
2002-09-17  Ben Elliston  
2002-09-17  Ben Elliston  
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-dce.o.
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-dce.o.
        tree-ssa-dce.o): New target.
        tree-ssa-dce.o): New target.
        * tree-ssa-dce.c: New file.
        * tree-ssa-dce.c: New file.
        * flags.h (flag_tree_ssa_dce): Declare flag.
        * flags.h (flag_tree_ssa_dce): Declare flag.
        * tree.h (tree_dump_index): Add TDI_dce.
        * tree.h (tree_dump_index): Add TDI_dce.
        * toplev.c (flag_tree_ssa_dce): New flag.
        * toplev.c (flag_tree_ssa_dce): New flag.
        (f_options): Add "dump-tree-all-ssa" option.
        (f_options): Add "dump-tree-all-ssa" option.
        * tree-flow.h (enum tree_flags): Add TF_NECESSARY.
        * tree-flow.h (enum tree_flags): Add TF_NECESSARY.
        * tree-dump.c (dump_files): Add dump-tree-dce option.
        * tree-dump.c (dump_files): Add dump-tree-dce option.
        (dump_enable_all_ssa): Enable it when dumping all.
        (dump_enable_all_ssa): Enable it when dumping all.
        * tree-optimize.h (tree_ssa_eliminate_dead_code): Declare.
        * tree-optimize.h (tree_ssa_eliminate_dead_code): Declare.
        * tree-optimize.c (optimize_function_tree): Invoke the
        * tree-optimize.c (optimize_function_tree): Invoke the
        optimisation pass if flag_tree_ssa_dce is set.
        optimisation pass if flag_tree_ssa_dce is set.
2002-09-17  Diego Novillo  
2002-09-17  Diego Novillo  
        * Makefile.in (tree-ssa.o): Add dependency on c-tree.h
        * Makefile.in (tree-ssa.o): Add dependency on c-tree.h
        * c-simplify.c (mark_not_simple_r): Don't mark IDENTIFIER_NODEs.
        * c-simplify.c (mark_not_simple_r): Don't mark IDENTIFIER_NODEs.
        * tree-dfa.c (function_may_recurse_p): Fix comment.
        * tree-dfa.c (function_may_recurse_p): Fix comment.
        (dump_ref): Don't dump immediate uses for PHI nodes more than once.
        (dump_ref): Don't dump immediate uses for PHI nodes more than once.
        (dump_referenced_vars): Unparse the name of the variable.
        (dump_referenced_vars): Unparse the name of the variable.
        * tree-flow.h (dump_tree_ssa): Declare.
        * tree-flow.h (dump_tree_ssa): Declare.
        (debug_tree_ssa): Declare.
        (debug_tree_ssa): Declare.
        (replace_ref_operand_with): Check if OPERAND_P is NULL.
        (replace_ref_operand_with): Check if OPERAND_P is NULL.
        (restore_ref_operand): Ditto.
        (restore_ref_operand): Ditto.
        (tree_annotation): Check that constants, types and IDENTIFIER_NODEs
        (tree_annotation): Check that constants, types and IDENTIFIER_NODEs
        are not being annotated.
        are not being annotated.
        * tree-ssa.c: Include c-tree.h.
        * tree-ssa.c: Include c-tree.h.
        (dump_reaching_defs): Unparse the variable name.
        (dump_reaching_defs): Unparse the variable name.
        (dump_tree_ssa): New function.
        (dump_tree_ssa): New function.
        (tree_build_ssa): Call it.
        (tree_build_ssa): Call it.
        (debug_tree_ssa): New function.
        (debug_tree_ssa): New function.
2002-09-14  Steven Bosscher 
2002-09-14  Steven Bosscher 
        * dwarf2out.c (is_fortran): Return true for
        * dwarf2out.c (is_fortran): Return true for
        DW_LANG_Fortran95.
        DW_LANG_Fortran95.
        (gen_compile_unit_die): Return DW_LANG_Fortran95 if
        (gen_compile_unit_die): Return DW_LANG_Fortran95 if
        language is "GNU F95".
        language is "GNU F95".
2002-09-13  Daniel Berlin  
2002-09-13  Daniel Berlin  
        * tree-dump.c (dump_switch_p): Get longest match, not first one.
        * tree-dump.c (dump_switch_p): Get longest match, not first one.
        * tree.h: Put TDI_* back in order, now that we do longest match
        * tree.h: Put TDI_* back in order, now that we do longest match
        matching.
        matching.
2002-09-13  Diego Novillo  
2002-09-13  Diego Novillo  
        * tree-dfa.c (add_call_site_clobbers): Call decl_function_context
        * tree-dfa.c (add_call_site_clobbers): Call decl_function_context
        instead of DECL_CONTEXT.
        instead of DECL_CONTEXT.
        * tree-ssa-ccp.c (initialize): Ditto.
        * tree-ssa-ccp.c (initialize): Ditto.
        * tree-ssa.c (analyze_rdefs): Ditto.
        * tree-ssa.c (analyze_rdefs): Ditto.
2002-09-11  Diego Novillo  
2002-09-11  Diego Novillo  
        * tree-dfa.c (find_refs_in_stmt): Call clobber_vars_r to clobber
        * tree-dfa.c (find_refs_in_stmt): Call clobber_vars_r to clobber
        CLEANUP_STMT nodes.
        CLEANUP_STMT nodes.
        (create_ref): Only add _DECL nodes to the list of referenced
        (create_ref): Only add _DECL nodes to the list of referenced
        variables.
        variables.
        (clobber_vars_r): Create a may-use reference prior to clobbering
        (clobber_vars_r): Create a may-use reference prior to clobbering
        the variable.
        the variable.
        (add_call_site_clobbers): Ditto.
        (add_call_site_clobbers): Ditto.
        (add_ptr_may_refs): Move call to find_list_node where it's actually
        (add_ptr_may_refs): Move call to find_list_node where it's actually
        needed.
        needed.
        * tree-flow.h: Update documentation on M_CLOBBER.
        * tree-flow.h: Update documentation on M_CLOBBER.
2002-09-10  Daniel Berlin  
2002-09-10  Daniel Berlin  
        * tree-ssa-pre.c (defs_match_p): Fix typo ( | -> || ).
        * tree-ssa-pre.c (defs_match_p): Fix typo ( | -> || ).
2002-09-10  Diego Novillo  
2002-09-10  Diego Novillo  
        * tree-dfa.c (V_PHI_ARG): Remove.  Adjust related constants.
        * tree-dfa.c (V_PHI_ARG): Remove.  Adjust related constants.
        Update all users.
        Update all users.
        (add_ref_to_list_after): Don't allocate memory for the
        (add_ref_to_list_after): Don't allocate memory for the
        node when adding to the beginning or the end of the list.
        node when adding to the beginning or the end of the list.
        (add_phi_arg): Don't call create_ref to add a new argument.
        (add_phi_arg): Don't call create_ref to add a new argument.
        (debug_phi_args): New function.
        (debug_phi_args): New function.
        (dump_phi_args): New function.
        (dump_phi_args): New function.
        (dump_ref): Call it.
        (dump_ref): Call it.
        (dump_referenced_vars): Use 'file' instead of 'dump_file'.
        (dump_referenced_vars): Use 'file' instead of 'dump_file'.
        * tree-flow.h (V_PHI_ARG): Remove.  Update all users.
        * tree-flow.h (V_PHI_ARG): Remove.  Update all users.
        (struct var_ref): Move fields used in distinct
        (struct var_ref): Move fields used in distinct
        reference types to other structures.  Update all users.
        reference types to other structures.  Update all users.
        (struct var_def): New.
        (struct var_def): New.
        (struct var_phi): New.
        (struct var_phi): New.
        (struct var_use): New.
        (struct var_use): New.
        (union tree_ref_d): Add members vdef, vphi, vuse and vphi_arg.
        (union tree_ref_d): Add members vdef, vphi, vuse and vphi_arg.
        Update all users.
        Update all users.
        (save_chain): Remove.  Update all users.
        (save_chain): Remove.  Update all users.
        (set_save_chain): Remove.  Update all users.
        (set_save_chain): Remove.  Update all users.
        (marked_with): Remove.  Update all users.
        (marked_with): Remove.  Update all users.
        (mark_def_with): Remove.  Update all users.
        (mark_def_with): Remove.  Update all users.
        (dump_reaching_defs): Declare.
        (dump_reaching_defs): Declare.
        (debug_reaching_defs): Declare.
        (debug_reaching_defs): Declare.
        (struct phi_node_arg_d): New structure.
        (struct phi_node_arg_d): New structure.
        (phi_node_arg): New type.
        (phi_node_arg): New type.
        (phi_arg): Change return type to phi_node_arg.
        (phi_arg): Change return type to phi_node_arg.
        (imm_reaching_def_edge): Rename to phi_arg_edge.
        (imm_reaching_def_edge): Rename to phi_arg_edge.
        (set_imm_reaching_def_edge): Rename to set_phi_arg_edge.
        (set_imm_reaching_def_edge): Rename to set_phi_arg_edge.
        (phi_arg_def): New inline function.
        (phi_arg_def): New inline function.
        (set_phi_arg_def): New inline function.
        (set_phi_arg_def): New inline function.
        (debug_phi_args): Declare.
        (debug_phi_args): Declare.
        (dump_phi_args): Declare.
        (dump_phi_args): Declare.
        * tree-ssa-ccp.c: Use new phi_node_arg type when examining PHI node
        * tree-ssa-ccp.c: Use new phi_node_arg type when examining PHI node
        arguments.
        arguments.
        * tree-ssa-pre.c: Ditto.
        * tree-ssa-pre.c: Ditto.
        * tree-ssa.c (save_chain): New local variable.
        * tree-ssa.c (save_chain): New local variable.
        (build_fud_chains, search_fud_chains): Use it.
        (build_fud_chains, search_fud_chains): Use it.
        (marked): New local variable.
        (marked): New local variable.
        (tree_compute_rdefs, follow_chain): Use it.
        (tree_compute_rdefs, follow_chain): Use it.
        (dump_reaching_defs): New function.
        (dump_reaching_defs): New function.
        (debug_reaching_defs): New function.
        (debug_reaching_defs): New function.
2002-09-09  Daniel Berlin 
2002-09-09  Daniel Berlin 
        * Makefile.in (tree-alias-steen.o): Remove gt-tree-alias-steen.h
        * Makefile.in (tree-alias-steen.o): Remove gt-tree-alias-steen.h
        (tree-alias-common.o): Add dependency on c-common.h
        (tree-alias-common.o): Add dependency on c-common.h
        * tree-ssa-pre.c: Fix PRE now that V_USE's expr's are the entire
        * tree-ssa-pre.c: Fix PRE now that V_USE's expr's are the entire
        assignment, rather than just the right hand side.
        assignment, rather than just the right hand side.
        Stop generating our own call clobbers
        Stop generating our own call clobbers
        * tree-dfa.c (create_ref): Make sure var is not null before checking
        * tree-dfa.c (create_ref): Make sure var is not null before checking
        TREE_THIS_VOLATILE.
        TREE_THIS_VOLATILE.
        * tree.h: Reorder TDI_* so ssapre comes before ssa.
        * tree.h: Reorder TDI_* so ssapre comes before ssa.
        * tree-dump.c: dump-tree-ssapre has to come before dump-tree-ssa
        * tree-dump.c: dump-tree-ssapre has to come before dump-tree-ssa
        in the table, or else it'll never match.
        in the table, or else it'll never match.
2002-09-09  Frank Ch. Eigler  
2002-09-09  Frank Ch. Eigler  
        * tree-mudflap.c (mf_offset_expr_of_array_ref): Fold constants along
        * tree-mudflap.c (mf_offset_expr_of_array_ref): Fold constants along
        the way.
        the way.
        (mf_build_check_statement_for): Ditto.  Flag new COMPONENT_REFs.
        (mf_build_check_statement_for): Ditto.  Flag new COMPONENT_REFs.
        (mx_xfn_indirect_ref): Instrument COMPONENT_REFs specially.  Tweak
        (mx_xfn_indirect_ref): Instrument COMPONENT_REFs specially.  Tweak
        ARRAY_REF instrumentation to reduce need of copying and recursion.
        ARRAY_REF instrumentation to reduce need of copying and recursion.
2002-09-09  Diego Novillo  
2002-09-09  Diego Novillo  
        * tree-ssa.c (analyze_rdefs): Disable uninitialized variable warnings.
        * tree-ssa.c (analyze_rdefs): Disable uninitialized variable warnings.
2002-09-09  Diego Novillo  
2002-09-09  Diego Novillo  
        * Makefile.in (tree-ssa.o): Add dependency on tree-simple.h.
        * Makefile.in (tree-ssa.o): Add dependency on tree-simple.h.
        (tree-dfa.o): Add dependency on tree-simple.h and tree-inline.h.
        (tree-dfa.o): Add dependency on tree-simple.h and tree-inline.h.
        (tree-alias-steen.o): Add dependency on c-common.h.
        (tree-alias-steen.o): Add dependency on c-common.h.
        (tree-optimize.o): Add dependency on c-common.h.
        (tree-optimize.o): Add dependency on c-common.h.
        * c-simplify.c (deep_copy_node): Call walk_tree with mostly_copy_tree_r.
        * c-simplify.c (deep_copy_node): Call walk_tree with mostly_copy_tree_r.
        (mostly_copy_tree_r): Also copy flags from original tree.
        (mostly_copy_tree_r): Also copy flags from original tree.
        (mark_not_simple_r): Call set_tree_flag.
        (mark_not_simple_r): Call set_tree_flag.
        * tree-alias-steen.c: Include c-common.h.
        * tree-alias-steen.c: Include c-common.h.
        * tree-cfg.c (map_stmt_to_bb): Remove.
        * tree-cfg.c (map_stmt_to_bb): Remove.
        (block_invalidates_loop): Change return type to bool.
        (block_invalidates_loop): Change return type to bool.
        (create_loop_hdr): New function.
        (create_loop_hdr): New function.
        (create_bb): Call it.
        (create_bb): Call it.
        (create_bb_ann): Return newly created annotation object.
        (create_bb_ann): Return newly created annotation object.
        (remove_bb_ann): Nullify loop_hdr annotation, if there is one.
        (remove_bb_ann): Nullify loop_hdr annotation, if there is one.
        (tree_delete_bb): Only remove basic block annotation from
        (tree_delete_bb): Only remove basic block annotation from
        executables statements.
        executables statements.
        (is_computed_goto): New function.
        (is_computed_goto): New function.
        * tree-dfa.c (pointer_refs): New file local variable.
        * tree-dfa.c (pointer_refs): New file local variable.
        (call_sites): New global variable.
        (call_sites): New global variable.
        (V_DEF, V_USE, V_PHI, V_PHI_ARG, E_FCALL, E_PHI, E_USE, E_KILL,
        (V_DEF, V_USE, V_PHI, V_PHI_ARG, E_FCALL, E_PHI, E_USE, E_KILL,
        E_INJ): New global constants.
        E_INJ): New global constants.
        (M_DEFAULT, M_CLOBBER, M_MAY, M_PARTIAL, M_INITIAL, M_INDIRECT,
        (M_DEFAULT, M_CLOBBER, M_MAY, M_PARTIAL, M_INITIAL, M_INDIRECT,
        M_VOLATILE): New global constants.
        M_VOLATILE): New global constants.
        (num_referenced_vars): New global variable.
        (num_referenced_vars): New global variable.
        (referenced_vars): Rename from referenced_symbols.  Update all
        (referenced_vars): Rename from referenced_symbols.  Update all
        users.
        users.
        (clobber_vars_r): New function.
        (clobber_vars_r): New function.
        (add_default_defs): New function.
        (add_default_defs): New function.
        (add_call_site_clobbers): New function.
        (add_call_site_clobbers): New function.
        (add_ptr_may_refs): New function.
        (add_ptr_may_refs): New function.
        (add_phi_arg): New function.
        (add_phi_arg): New function.
        (find_list_node): New function.
        (find_list_node): New function.
        (remove_ref_from_list): Call it.
        (remove_ref_from_list): Call it.
        (add_ref_to_list_after): New function.
        (add_ref_to_list_after): New function.
        (is_pure_fcall): New function.
        (is_pure_fcall): New function.
        (fcall_takes_ref_args): New function.
        (fcall_takes_ref_args): New function.
        (dump_referenced_vars): New function.
        (dump_referenced_vars): New function.
        (debug_referenced_vars): New function.
        (debug_referenced_vars): New function.
        (ref_type_name): New function.
        (ref_type_name): New function.
        (validate_ref_type): New function.
        (validate_ref_type): New function.
        (debug_phi_args): Remove.
        (debug_phi_args): Remove.
        (dump_phi_args): Remove.
        (dump_phi_args): Remove.
        (add_referenced_var): Rename from add_ref_symbol.  Update all
        (add_referenced_var): Rename from add_ref_symbol.  Update all
        users.
        users.
        (dump_ref): Rename from dump_varref.  Update all users.
        (dump_ref): Rename from dump_varref.  Update all users.
        (debug_ref): Rename from debug_varref.  Update all users.
        (debug_ref): Rename from debug_varref.  Update all users.
        (dump_ref_list): Rename from dump_varref_list.  Update all users.
        (dump_ref_list): Rename from dump_varref_list.  Update all users.
        (dump_ref_array): Rename from dump_varref_array.  Update all users.
        (dump_ref_array): Rename from dump_varref_array.  Update all users.
        (next_tree_ref_id): Rename from next_varref_id.  Update all users.
        (next_tree_ref_id): Rename from next_varref_id.  Update all users.
        (tree_find_refs): Rename from tree_find_varrefs.  Update all users.
        (tree_find_refs): Rename from tree_find_varrefs.  Update all users.
        Call add_default_defs.
        Call add_default_defs.
        Call add_call_site_clobbers.
        Call add_call_site_clobbers.
        Call add_ptr_may_refs.
        Call add_ptr_may_refs.
        Call dump_referenced_vars.
        Call dump_referenced_vars.
        Create and destroy pointer_refs list.
        Create and destroy pointer_refs list.
        (find_refs_in_stmt): Set reference type to clobbering definition
        (find_refs_in_stmt): Set reference type to clobbering definition
        for the ASM_OUTPUTS and ASM_CLOBBERS expressions of an ASM_STMT.
        for the ASM_OUTPUTS and ASM_CLOBBERS expressions of an ASM_STMT.
        Set reference type to initial definition for the DECL_INITIAL node
        Set reference type to initial definition for the DECL_INITIAL node
        of a DECL_STMT.
        of a DECL_STMT.
        Clobber everything in CLEANUP_STMT nodes.
        Clobber everything in CLEANUP_STMT nodes.
        (find_refs_in_expr): Re-write.
        (find_refs_in_expr): Re-write.
        Recursively clobber every VAR_DECL contained in non SIMPLE nodes.
        Recursively clobber every VAR_DECL contained in non SIMPLE nodes.
        Mark indirect pointer references with M_INDIRECT flag.
        Mark indirect pointer references with M_INDIRECT flag.
        Add pointer references to pointer_refs list.
        Add pointer references to pointer_refs list.
        Glob references to arrays and structures.
        Glob references to arrays and structures.
        Add function call expressions to call_sites list.
        Add function call expressions to call_sites list.
        (empty_ref_list): Do nothing if the list is empty already.
        (empty_ref_list): Do nothing if the list is empty already.
        (delete_ref_list): Ditto.
        (delete_ref_list): Ditto.
        (create_ref): Add new argument ADD_TO_BB.
        (create_ref): Add new argument ADD_TO_BB.
        Set M_VOLATILE modifier if this is a reference to a volatile
        Set M_VOLATILE modifier if this is a reference to a volatile
        variable.
        variable.
        Count number of incoming edges for V_PHI references before
        Count number of incoming edges for V_PHI references before
        initializing the V_PHI_ARG array.
        initializing the V_PHI_ARG array.
        Only add reference to basic block if ADD_TO_BB is true.
        Only add reference to basic block if ADD_TO_BB is true.
        Set output reference for the parent expression for V_DEF
        Set output reference for the parent expression for V_DEF
        references.
        references.
        (remove_tree_ann): Do nothing if the tree didn't have an
        (remove_tree_ann): Do nothing if the tree didn't have an
        annotation.
        annotation.
        * tree-flow.h (enum treeref_type): Remove.  Update all users.
        * tree-flow.h (enum treeref_type): Remove.  Update all users.
        (union varref_def): Ditto.
        (union varref_def): Ditto.
        (tree_ref): Rename from varref.  Update all users.
        (tree_ref): Rename from varref.  Update all users.
        (V_DEF): Declare.
        (V_DEF): Declare.
        (V_USE): Declare.
        (V_USE): Declare.
        (V_PHI): Declare.
        (V_PHI): Declare.
        (V_PHI_ARG): Declare.
        (V_PHI_ARG): Declare.
        (E_FCALL): Declare.
        (E_FCALL): Declare.
        (E_PHI): Declare.
        (E_PHI): Declare.
        (E_USE): Declare.
        (E_USE): Declare.
        (E_KILL): Declare.
        (E_KILL): Declare.
        (E_INJ): Declare.
        (E_INJ): Declare.
        (M_DEFAULT): Declare.
        (M_DEFAULT): Declare.
        (M_CLOBBER): Declare.
        (M_CLOBBER): Declare.
        (M_MAY): Declare.
        (M_MAY): Declare.
        (M_PARTIAL): Declare.
        (M_PARTIAL): Declare.
        (M_INITIAL): Declare.
        (M_INITIAL): Declare.
        (M_INDIRECT): Declare.
        (M_INDIRECT): Declare.
        (M_VOLATILE): Declare.
        (M_VOLATILE): Declare.
        (struct tree_ref_common): Rename from treeref_common.  Update all
        (struct tree_ref_common): Rename from treeref_common.  Update all
        users.
        users.
        Change type of field 'type' to HOST_WIDE_INT.
        Change type of field 'type' to HOST_WIDE_INT.
        Rename field 'sym' to 'var'.
        Rename field 'sym' to 'var'.
        (struct var_ref): Rename from varref.  Update all users.
        (struct var_ref): Rename from varref.  Update all users.
        Join the structures varuse
        Join the structures varuse
        and vardef into a single structure.
        and vardef into a single structure.
        (struct expr_ref_common): Rename from exprref_common.  Update all
        (struct expr_ref_common): Rename from exprref_common.  Update all
        users.
        users.
        (struct expr_use): Rename from expruse.  Update all users.
        (struct expr_use): Rename from expruse.  Update all users.
        (struct expr_phi): Rename from exprphi.  Update all users.
        (struct expr_phi): Rename from exprphi.  Update all users.
        (union tree_ref_d): Rename from varref_def.  Update all users.
        (union tree_ref_d): Rename from varref_def.  Update all users.
        (EXPRPHI_PHI_ARGS): Rename from EXPRPHI_PHI_CHAIN.  Update all
        (EXPRPHI_PHI_ARGS): Rename from EXPRPHI_PHI_CHAIN.  Update all
        users.
        users.
        (struct tree_ann_d): Rename field 'compound_stmt' to
        (struct tree_ann_d): Rename field 'compound_stmt' to
        'compound_parent'.
        'compound_parent'.
        Add field 'output_ref'.
        Add field 'output_ref'.
        (enum tree_flags): New enum.
        (enum tree_flags): New enum.
        (TF_REFERENCED): New flag.
        (TF_REFERENCED): New flag.
        (phi_arg): Remove.
        (phi_arg): Remove.
        (get_num_phi_args): Remove.
        (get_num_phi_args): Remove.
        (get_phi_arg): Remove.
        (get_phi_arg): Remove.
        (struct vardef): Remove.  Update all users.
        (struct vardef): Remove.  Update all users.
        (VARDEF_IMM_USES): Ditto.
        (VARDEF_IMM_USES): Ditto.
        (VARDEF_SAVE_CHAIN): Ditto.
        (VARDEF_SAVE_CHAIN): Ditto.
        (VARDEF_RUSES): Ditto.
        (VARDEF_RUSES): Ditto.
        (VARDEF_MARKED): Ditto.
        (VARDEF_MARKED): Ditto.
        (VARDEF_PHI_ARGS): Ditto.
        (VARDEF_PHI_ARGS): Ditto.
        (struct varuse): Ditto.
        (struct varuse): Ditto.
        (VARUSE_IMM_RDEF): Ditto.
        (VARUSE_IMM_RDEF): Ditto.
        (VARUSE_RDEFS): Ditto.
        (VARUSE_RDEFS): Ditto.
        (VARREF_ID): Ditto.
        (VARREF_ID): Ditto.
        (VARREF_TYPE): Ditto.
        (VARREF_TYPE): Ditto.
        (VARREF_BB): Ditto.
        (VARREF_BB): Ditto.
        (VARREF_EXPR): Ditto.
        (VARREF_EXPR): Ditto.
        (VARREF_OPERAND_P): Ditto.
        (VARREF_OPERAND_P): Ditto.
        (VARREF_STMT): Ditto.
        (VARREF_STMT): Ditto.
        (VARREF_SYM): Ditto.
        (VARREF_SYM): Ditto.
        (IS_DEFAULT_DEF): Ditto.
        (IS_DEFAULT_DEF): Ditto.
        (IS_ARTIFICIAL_REF): Ditto.
        (IS_ARTIFICIAL_REF): Ditto.
        (TREE_ANN): Ditto.
        (TREE_ANN): Ditto.
        (BB_FOR_STMT): Ditto.
        (BB_FOR_STMT): Ditto.
        (TREE_CURRDEF): Ditto.
        (TREE_CURRDEF): Ditto.
        (TREE_REFS): Ditto.
        (TREE_REFS): Ditto.
        (TREE_COMPOUND_STMT): Ditto.
        (TREE_COMPOUND_STMT): Ditto.
        (TREE_FLAGS): Ditto.
        (TREE_FLAGS): Ditto.
        (BB_ANN): Ditto.
        (BB_ANN): Ditto.
        (BB_PARENT): Ditto.
        (BB_PARENT): Ditto.
        (BB_REFS): Ditto.
        (BB_REFS): Ditto.
        (BB_PREV_CHAIN_P): Ditto.
        (BB_PREV_CHAIN_P): Ditto.
        (BB_BINDING_SCOPE): Ditto.
        (BB_BINDING_SCOPE): Ditto.
        (BB_LOOP_HDR): Ditto.
        (BB_LOOP_HDR): Ditto.
        (FOR_INIT_STMT_BB): Ditto.
        (FOR_INIT_STMT_BB): Ditto.
        (FOR_COND_BB): Ditto.
        (FOR_COND_BB): Ditto.
        (FOR_EXPR_BB): Ditto.
        (FOR_EXPR_BB): Ditto.
        (END_WHILE_BB): Ditto.
        (END_WHILE_BB): Ditto.
        (DO_COND_BB): Ditto.
        (DO_COND_BB): Ditto.
        (BB_EMPTY_P): Ditto.
        (BB_EMPTY_P): Ditto.
        (ref_type): New inline function.
        (ref_type): New inline function.
        (ref_var): New inline function.
        (ref_var): New inline function.
        (ref_stmt): New inline function.
        (ref_stmt): New inline function.
        (ref_expr): New inline function.
        (ref_expr): New inline function.
        (ref_bb): New inline function.
        (ref_bb): New inline function.
        (ref_id): New inline function.
        (ref_id): New inline function.
        (replace_ref_operand_with): New inline function.
        (replace_ref_operand_with): New inline function.
        (restore_ref_operand): New inline function.
        (restore_ref_operand): New inline function.
        (imm_uses): New inline function.
        (imm_uses): New inline function.
        (save_chain): New inline function.
        (save_chain): New inline function.
        (set_save_chain): New inline function.
        (set_save_chain): New inline function.
        (reached_uses): New inline function.
        (reached_uses): New inline function.
        (marked_with): New inline function.
        (marked_with): New inline function.
        (mark_def_with): New inline function.
        (mark_def_with): New inline function.
        (phi_args): New inline function.
        (phi_args): New inline function.
        (num_phi_args): New inline function.
        (num_phi_args): New inline function.
        (phi_arg): New inline function.
        (phi_arg): New inline function.
        (imm_reaching_def): New inline function.
        (imm_reaching_def): New inline function.
        (set_imm_reaching_def): New inline function.
        (set_imm_reaching_def): New inline function.
        (imm_reaching_def_edge): New inline function.
        (imm_reaching_def_edge): New inline function.
        (set_imm_reaching_def_edge): New inline function.
        (set_imm_reaching_def_edge): New inline function.
        (reaching_defs): New inline function.
        (reaching_defs): New inline function.
        (tree_annotation): New inline function.
        (tree_annotation): New inline function.
        (has_annotation): New inline function.
        (has_annotation): New inline function.
        (bb_for_stmt): New inline function.
        (bb_for_stmt): New inline function.
        (set_bb_for_stmt): New inline function.
        (set_bb_for_stmt): New inline function.
        (currdef_for): New inline function.
        (currdef_for): New inline function.
        (set_currdef_for): New inline function.
        (set_currdef_for): New inline function.
        (tree_refs): New inline function.
        (tree_refs): New inline function.
        (add_tree_ref): New inline function.
        (add_tree_ref): New inline function.
        (remove_tree_ref): New inline function.
        (remove_tree_ref): New inline function.
        (compound_parent): New inline function.
        (compound_parent): New inline function.
        (set_compound_parent): New inline function.
        (set_compound_parent): New inline function.
        (set_tree_flag): New inline function.
        (set_tree_flag): New inline function.
        (clear_tree_flag): New inline function.
        (clear_tree_flag): New inline function.
        (tree_flags): New inline function.
        (tree_flags): New inline function.
        (reset_tree_flags): New inline function.
        (reset_tree_flags): New inline function.
        (output_ref): New inline function.
        (output_ref): New inline function.
        (set_output_ref): New inline function.
        (set_output_ref): New inline function.
        (bb_annotation): New inline function.
        (bb_annotation): New inline function.
        (bb_parent): New inline function.
        (bb_parent): New inline function.
        (set_bb_parent): New inline function.
        (set_bb_parent): New inline function.
        (bb_refs): New inline function.
        (bb_refs): New inline function.
        (remove_bb_ref): New inline function.
        (remove_bb_ref): New inline function.
        (prev_chain_p): New inline function.
        (prev_chain_p): New inline function.
        (set_prev_chain_p): New inline function.
        (set_prev_chain_p): New inline function.
        (binding_scope): New inline function.
        (binding_scope): New inline function.
        (set_binding_scope): New inline function.
        (set_binding_scope): New inline function.
        (header_blocks): New inline function.
        (header_blocks): New inline function.
        (for_init_bb): New inline function.
        (for_init_bb): New inline function.
        (set_for_init_bb): New inline function.
        (set_for_init_bb): New inline function.
        (for_cond_bb): New inline function.
        (for_cond_bb): New inline function.
        (set_for_cond_bb): New inline function.
        (set_for_cond_bb): New inline function.
        (for_expr_bb): New inline function.
        (for_expr_bb): New inline function.
        (set_for_expr_bb): New inline function.
        (set_for_expr_bb): New inline function.
        (end_while_bb): New inline function.
        (end_while_bb): New inline function.
        (set_end_while_bb): New inline function.
        (set_end_while_bb): New inline function.
        (do_cond_bb): New inline function.
        (do_cond_bb): New inline function.
        (set_do_cond_bb): New inline function.
        (set_do_cond_bb): New inline function.
        (bb_empty_p): New inline function.
        (bb_empty_p): New inline function.
        (referenced_vars): Rename from referenced_symbols.  Update all
        (referenced_vars): Rename from referenced_symbols.  Update all
        users.
        users.
        (num_referenced_vars): Declare.
        (num_referenced_vars): Declare.
        (NREF_SYMBOLS): Remove.  Update all users.
        (NREF_SYMBOLS): Remove.  Update all users.
        (REF_SYMBOL): Ditto.
        (REF_SYMBOL): Ditto.
        (ADD_REF_SYMBOL): Ditto.
        (ADD_REF_SYMBOL): Ditto.
        (referenced_var): New inline function.
        (referenced_var): New inline function.
        (call_sites): Declare.
        (call_sites): Declare.
        (next_tree_ref_id): Rename from next_varref_id.  Update all users.
        (next_tree_ref_id): Rename from next_varref_id.  Update all users.
        (is_computed_goto): Declare.
        (is_computed_goto): Declare.
        (is_pure_fcall): Declare.
        (is_pure_fcall): Declare.
        (fcall_takes_ref_args): Declare.
        (fcall_takes_ref_args): Declare.
        (add_ref_to_list_after): Declare.
        (add_ref_to_list_after): Declare.
        (find_list_node): Declare.
        (find_list_node): Declare.
        (ref_type_name): Declare.
        (ref_type_name): Declare.
        (validate_ref_type): Declare.
        (validate_ref_type): Declare.
        * tree-optimize.c: Include c-common.h.
        * tree-optimize.c: Include c-common.h.
        (optimize_function_tree): Store DECL_SAVED_TREE in a local
        (optimize_function_tree): Store DECL_SAVED_TREE in a local
        variable.
        variable.
        * tree-ssa-ccp.c (cp_lattice_meet): New function.
        * tree-ssa-ccp.c (cp_lattice_meet): New function.
        (visit_phi_node): Call it.
        (visit_phi_node): Call it.
        (add_outgoing_control_edges): New function.
        (add_outgoing_control_edges): New function.
        (visit_expression_for): Call it.
        (visit_expression_for): Call it.
        Don't handle static initializers.
        Don't handle static initializers.
        Handle computed gotos.
        Handle computed gotos.
        (add_control_edge): New function.
        (add_control_edge): New function.
        (visit_condexpr_for, simulate_block, add_outgoing_control_edges): Call
        (visit_condexpr_for, simulate_block, add_outgoing_control_edges): Call
        it.
        it.
        (simulate_def_use_chains): Only look at unmodified V_USE references.
        (simulate_def_use_chains): Only look at unmodified V_USE references.
        (ssa_ccp_substitute_constants): Ditto.
        (ssa_ccp_substitute_constants): Ditto.
        (evaluate_expr): Ditto.
        (evaluate_expr): Ditto.
        (initialize): Set initial value for incoming parameters and globals
        (initialize): Set initial value for incoming parameters and globals
        to VARYING.
        to VARYING.
        Set initial value for initialized static variables to VARYING,
        Set initial value for initialized static variables to VARYING,
        unless the variable is read-only.
        unless the variable is read-only.
        (set_lattice_value): Don't special case globals, volatiles and
        (set_lattice_value): Don't special case globals, volatiles and
        variables with their address taken.
        variables with their address taken.
        * tree-ssa.c: Include tree-simple.h.
        * tree-ssa.c: Include tree-simple.h.
        (tree_build_ssa): Don't add default definitions.
        (tree_build_ssa): Don't add default definitions.
        (insert_phi_terms): Add new PHI nodes at the beginning of the list
        (insert_phi_terms): Add new PHI nodes at the beginning of the list
        of references for the basic block.
        of references for the basic block.
        (search_fud_chains): Add def-def chains for non-killing
        (search_fud_chains): Add def-def chains for non-killing
        definitions.
        definitions.
        (delete_ssa): Remove list call_sites.
        (delete_ssa): Remove list call_sites.
        Set num_referenced_vars to 0.
        Set num_referenced_vars to 0.
        Set referenced_vars to NULL.
        Set referenced_vars to NULL.
        (follow_chain): Follow def-def chains for non-killing definitions.
        (follow_chain): Follow def-def chains for non-killing definitions.
        (is_upward_exposed): Change return type to bool.
        (is_upward_exposed): Change return type to bool.
        (add_phi_arg): Remove.
        (add_phi_arg): Remove.
2002-09-06  Frank Ch. Eigler  
2002-09-06  Frank Ch. Eigler  
        * tree-mudflap.c (deferred_static_decl*): Correct GTY markup.
        * tree-mudflap.c (deferred_static_decl*): Correct GTY markup.
        (mudflap_enqueue_decl): Correct iteration bounds.
        (mudflap_enqueue_decl): Correct iteration bounds.
        (mf_init_extern_trees): Add more constness to mf_cache_structptr_type.
        (mf_init_extern_trees): Add more constness to mf_cache_structptr_type.
        (mf_offset_expr_of_array_ref): Remove excess mx_flagging.  save_expr
        (mf_offset_expr_of_array_ref): Remove excess mx_flagging.  save_expr
        array subscripts.
        array subscripts.
        (mf_build_check_statement_for): Reorganize to take explicit
        (mf_build_check_statement_for): Reorganize to take explicit
        check-base/size arguments, in addition to value argument.  save_expr
        check-base/size arguments, in addition to value argument.  save_expr
        array subscripts.  Copy value/base/size subtrees.
        array subscripts.  Copy value/base/size subtrees.
        (mx_xfn_indirect_ref): Support marking of subtrees for nontraversal.
        (mx_xfn_indirect_ref): Support marking of subtrees for nontraversal.
        Track source line numbers more aggressively.  For arrays, check bounds
        Track source line numbers more aggressively.  For arrays, check bounds
        from base through indexed element, not just the indexed element.
        from base through indexed element, not just the indexed element.
        Use nontraversal flagging to eliminate some excess instrumentation.
        Use nontraversal flagging to eliminate some excess instrumentation.
        (mf_xform_derefs): Support nontraversal by a hash table.
        (mf_xform_derefs): Support nontraversal by a hash table.
        (*): Remove "{{{"/"}}}" folding marks.
        (*): Remove "{{{"/"}}}" folding marks.
2002-09-02  Daniel Berlin  
2002-09-02  Daniel Berlin  
        * tree-alias-common.[ch]: New files.
        * tree-alias-common.[ch]: New files.
        * tree-alias-steen.[ch]: Split out common stuff into
        * tree-alias-steen.[ch]: Split out common stuff into
        tree-alias-common.[ch].
        tree-alias-common.[ch].
        * c-config-lang.in: Modify to use tree-alias-common.[ch] instead of
        * c-config-lang.in: Modify to use tree-alias-common.[ch] instead of
        tree-alias-steen, since this is where the GTY'd stuff is now.
        tree-alias-steen, since this is where the GTY'd stuff is now.
        * Makefile.in: Add dependencies for tree-alias-common.[ch].
        * Makefile.in: Add dependencies for tree-alias-common.[ch].
2002-09-03  Diego Novillo  
2002-09-03  Diego Novillo  
        * c-simplify.c (simplify_goto_stmt): New function.
        * c-simplify.c (simplify_goto_stmt): New function.
        (simplify_stmt): Call it.
        (simplify_stmt): Call it.
        * tree-simple.c: Document grammar for GOTO_STMT nodes.
        * tree-simple.c: Document grammar for GOTO_STMT nodes.
        (rationalize_compound_expr): Wrap it with #if 0/#endif.
        (rationalize_compound_expr): Wrap it with #if 0/#endif.
        (get_base_symbol): Minor comment fixup.
        (get_base_symbol): Minor comment fixup.
2002-09-03  Frank Ch. Eigler  
2002-09-03  Frank Ch. Eigler  
        * gcc.c (MFWRAP_SPEC): Add --wrap=alloca.
        * gcc.c (MFWRAP_SPEC): Add --wrap=alloca.
2002-09-01  Diego Novillo  
2002-09-01  Diego Novillo  
        * c-simplify.c (simplify_stmt): Mark CLEANUP_STMTs and ASM_STMTs
        * c-simplify.c (simplify_stmt): Mark CLEANUP_STMTs and ASM_STMTs
        not SIMPLE.
        not SIMPLE.
        (simplify_for_stmt): Do not allow expression sequences in
        (simplify_for_stmt): Do not allow expression sequences in
        FOR_INIT_STMT and FOR_EXPR nodes.
        FOR_INIT_STMT and FOR_EXPR nodes.
        * tree-simple.c: Document difference with original SIMPLE grammar.
        * tree-simple.c: Document difference with original SIMPLE grammar.
2002-08-31  Frank Ch. Eigler  
2002-08-31  Frank Ch. Eigler  
        * tree-mudflap.c (mf_build_check_statement_for): Tolerate dereference
        * tree-mudflap.c (mf_build_check_statement_for): Tolerate dereference
        of void pointers.
        of void pointers.
        (mx_register_decl): Correct typo in below patch.
        (mx_register_decl): Correct typo in below patch.
2002-08-30  Graydon Hoare  
2002-08-30  Graydon Hoare  
        * tree-mudflap.c (mx_register_decl): Mark declarations as
        * tree-mudflap.c (mx_register_decl): Mark declarations as
        TREE_ADDRESSABLE when mudflap decides to register them.
        TREE_ADDRESSABLE when mudflap decides to register them.
2002-08-29  Graydon Hoare  
2002-08-29  Graydon Hoare  
        * tree-mudflap.c (mx_xfn_indirect_ref): Rewrite array references as
        * tree-mudflap.c (mx_xfn_indirect_ref): Rewrite array references as
        pointer dereferences.
        pointer dereferences.
        (struct mf_xform_decls_data): New member: param_decls.
        (struct mf_xform_decls_data): New member: param_decls.
        (mx_register_decl): New function.
        (mx_register_decl): New function.
        (mx_xfn_xform_decls): Factor code out into mx_register_decl.
        (mx_xfn_xform_decls): Factor code out into mx_register_decl.
        Register live parameters with mudflap.
        Register live parameters with mudflap.
        (mx_xfn_find_addrof): Notice references to fields of structures
        (mx_xfn_find_addrof): Notice references to fields of structures
        and function parameters.
        and function parameters.
2002-08-29  Frank Ch. Eigler  
2002-08-29  Frank Ch. Eigler  
        * c-pretty-print.c (dump_c_tree): Detect loops in statement chains
        * c-pretty-print.c (dump_c_tree): Detect loops in statement chains
        using a hash table to track visited status.
        using a hash table to track visited status.
        * Makefile.in: Add hashtab.h dependency.
        * Makefile.in: Add hashtab.h dependency.
2002-08-28  Frank Ch. Eigler  
2002-08-28  Frank Ch. Eigler  
        * tree-mudflap.c (mudflap_enqueue_constant): Register non-string
        * tree-mudflap.c (mudflap_enqueue_constant): Register non-string
        constants also.
        constants also.
        (mf_build_check_statement_for): Include pushlevel/pushdecl/poplevel
        (mf_build_check_statement_for): Include pushlevel/pushdecl/poplevel
        for local variables.
        for local variables.
2002-08-27  Frank Ch. Eigler  
2002-08-27  Frank Ch. Eigler  
        Better static registration:
        Better static registration:
        * varasm.c (make_decl_rtl): Handle DECL_RTL_SET_P case for
        * varasm.c (make_decl_rtl): Handle DECL_RTL_SET_P case for
        mudflap static registration.
        mudflap static registration.
        * tree-mudflap.c (mudflap_enqueue_decl): Rewrite to handle
        * tree-mudflap.c (mudflap_enqueue_decl): Rewrite to handle
        deferred statics.
        deferred statics.
        (mudflap_finish_file): Call above fn back for deferred statics.
        (mudflap_finish_file): Call above fn back for deferred statics.
        Cleanup:
        Cleanup:
        * tree-mudflap.c (mf_varname_tree, mf_file_function_line_tree):
        * tree-mudflap.c (mf_varname_tree, mf_file_function_line_tree):
        Reorganize output_buffer reuse mechanism.
        Reorganize output_buffer reuse mechanism.
        (mf_build_check_statement_for): Set TREE_SIDE_EFFECTS.
        (mf_build_check_statement_for): Set TREE_SIDE_EFFECTS.
        (mx_xfn_indirect_ref): Correct file/line collection tests.
        (mx_xfn_indirect_ref): Correct file/line collection tests.
        Dynamic linking support:
        Dynamic linking support:
        * gcc.c (MFWRAP_SPEC): Make conditional on -static.  Add the
        * gcc.c (MFWRAP_SPEC): Make conditional on -static.  Add the
        newer wrapped functions dlopen/mmap/munmap.
        newer wrapped functions dlopen/mmap/munmap.
        (MFLIB_SPEC): Be sensitive to -static.  Partial support for
        (MFLIB_SPEC): Be sensitive to -static.  Partial support for
        dynamic linking.
        dynamic linking.
2002-08-26  Diego Novillo  
2002-08-26  Diego Novillo  
        * Makefile.in (tree-ssa.o): Add dependency on ggc.h
        * Makefile.in (tree-ssa.o): Add dependency on ggc.h
        (c-simplify.o): Add dependency on langhooks-def.h
        (c-simplify.o): Add dependency on langhooks-def.h
        * c-simplify.c: Include langhooks-def.h
        * c-simplify.c: Include langhooks-def.h
        (simplify_function_tree): Do nothing if the front end does not
        (simplify_function_tree): Do nothing if the front end does not
        support simplification.
        support simplification.
        * tree-flow.h (struct vardef): Remove fields 'phi_chain' and
        * tree-flow.h (struct vardef): Remove fields 'phi_chain' and
        'phi_chain_bb'.
        'phi_chain_bb'.
        Add field 'phi_args'.
        Add field 'phi_args'.
        (VARDEF_PHI_CHAIN): Remove.  Update all users.
        (VARDEF_PHI_CHAIN): Remove.  Update all users.
        (VARDEF_PHI_CHAIN_BB): Remove.  Update all users.
        (VARDEF_PHI_CHAIN_BB): Remove.  Update all users.
        (VARDEF_PHI_ARGS): Define.
        (VARDEF_PHI_ARGS): Define.
        (struct varuse): Rename field 'chain' to 'imm_rdef'.  Update all
        (struct varuse): Rename field 'chain' to 'imm_rdef'.  Update all
        users.
        users.
        (VARUSE_IMM_RDEF):  Rename from VARUSE_CHAIN.  Update all users.
        (VARUSE_IMM_RDEF):  Rename from VARUSE_CHAIN.  Update all users.
        (phi_arg): New structure.
        (phi_arg): New structure.
        (get_num_phi_args): New function.
        (get_num_phi_args): New function.
        (get_phi_arg): New function.
        (get_phi_arg): New function.
        (set_phi_arg): New function.
        (set_phi_arg): New function.
        (add_phi_arg): New function.
        (add_phi_arg): New function.
        (debug_phi_args): Declare.
        (debug_phi_args): Declare.
        (dump_phi_args): Declare.
        (dump_phi_args): Declare.
        * tree-dfa.c (create_ref): Remove initialization of
        * tree-dfa.c (create_ref): Remove initialization of
        VARDEF_PHI_CHAIN and VARDEF_PHI_CHAIN_BB.
        VARDEF_PHI_CHAIN and VARDEF_PHI_CHAIN_BB.
        Initialize array VARDEF_PHI_ARGS.
        Initialize array VARDEF_PHI_ARGS.
        (dump_varref): Call dump_phi_args.
        (dump_varref): Call dump_phi_args.
        (dump_phi_args): New function.
        (dump_phi_args): New function.
        (debug_phi_args): New function.
        (debug_phi_args): New function.
        * tree-ssa-ccp.c (PHI_PARMS): Remove.
        * tree-ssa-ccp.c (PHI_PARMS): Remove.
        (EIE): Remove.
        (EIE): Remove.
        (visit_phi_node): Get the argument's edge directly from the
        (visit_phi_node): Get the argument's edge directly from the
        argument instead of calling find_edge.
        argument instead of calling find_edge.
        (initialize): Cast call to NUM_EDGES to unsigned.
        (initialize): Cast call to NUM_EDGES to unsigned.
        * tree-ssa-pre.c: Update uses of VARDEF_PHI_CHAIN,
        * tree-ssa-pre.c: Update uses of VARDEF_PHI_CHAIN,
        VARDEF_PHI_CHAIN_BB and VARUSE_CHAIN everywhere.
        VARDEF_PHI_CHAIN_BB and VARUSE_CHAIN everywhere.
        * tree-ssa.c: Ditto.
        * tree-ssa.c: Ditto.
        Include ggc.h.
        Include ggc.h.
        (search_fud_chains): Call add_phi_arg to add arguments to each PHI
        (search_fud_chains): Call add_phi_arg to add arguments to each PHI
        node.
        node.
        (tree_ssa_remove_phi_alternative): Call set_phi_arg to switch the
        (tree_ssa_remove_phi_alternative): Call set_phi_arg to switch the
        last element with the element being removed.
        last element with the element being removed.
2002-08-26  Diego Novillo  
2002-08-26  Diego Novillo  
        * c-simplify.c (mostly_copy_tree_r): Unshare STMT_EXPR
        * c-simplify.c (mostly_copy_tree_r): Unshare STMT_EXPR
        nodes.
        nodes.
2002-08-25  Diego Novillo  
2002-08-25  Diego Novillo  
        * tree-dfa.c (find_refs_in_stmt): Replace calls to
        * tree-dfa.c (find_refs_in_stmt): Replace calls to
        RETURN_EXPR with RETURN_STMT_EXPR.
        RETURN_EXPR with RETURN_STMT_EXPR.
        * c-simplify.c (simplify_return_stmt): Ditto.
        * c-simplify.c (simplify_return_stmt): Ditto.
        (deep_copy_node): Ditto.
        (deep_copy_node): Ditto.
        * c-pretty-print.c (dump_c_node): Ditto.
        * c-pretty-print.c (dump_c_node): Ditto.
2002-08-24  Diego Novillo  
2002-08-24  Diego Novillo  
        * c-pretty-print.c: Add `break' after calls to NIY in
        * c-pretty-print.c: Add `break' after calls to NIY in
        switch statements.
        switch statements.
2002-08-23  Jeffrey A Law  (law@redhat.com)
2002-08-23  Jeffrey A Law  (law@redhat.com)
        * tree-ssa-ccp.c (tree_ssa_ccp): Remove #if 0 that accidentally
        * tree-ssa-ccp.c (tree_ssa_ccp): Remove #if 0 that accidentally
        got checked in.  Cleanup the cfg to remove unreachable blocks
        got checked in.  Cleanup the cfg to remove unreachable blocks
        discovered by CCP.
        discovered by CCP.
        * basic-block.h (EDGE_EXECUTABLE): New edge flag.
        * basic-block.h (EDGE_EXECUTABLE): New edge flag.
        * cfganal.c (find_edge): New function.
        * cfganal.c (find_edge): New function.
        * ssa-ccp.c: Convert to use EDGE_EXECUTABLE bit in the
        * ssa-ccp.c: Convert to use EDGE_EXECUTABLE bit in the
        edge flags rather than a bitmap.  Convert edge worklist
        edge flags rather than a bitmap.  Convert edge worklist
        into a varray.  Avoids expensive find_index_edge calls.
        into a varray.  Avoids expensive find_index_edge calls.
        * tree-ssa-ccp.c: Likewise.
        * tree-ssa-ccp.c: Likewise.
        * tree-flow.h (tree_ssa_remove_phi_alternative): Declare.
        * tree-flow.h (tree_ssa_remove_phi_alternative): Declare.
        * tree-ssa.c (tree_ssa_remove_phi_alternative): New function.
        * tree-ssa.c (tree_ssa_remove_phi_alternative): New function.
        * tree-ssa-ccp.c (optimize_unexecutable_edges): Remove
        * tree-ssa-ccp.c (optimize_unexecutable_edges): Remove
        PHI alternatives for unexecutable edges.  Also remove
        PHI alternatives for unexecutable edges.  Also remove
        unexecutable edges from the CFG.
        unexecutable edges from the CFG.
2002-08-22  Jeffrey A Law  (law@redhat.com)
2002-08-22  Jeffrey A Law  (law@redhat.com)
        * Makefile.in (tree-optimize.o): Depend on tree-dchain.o
        * Makefile.in (tree-optimize.o): Depend on tree-dchain.o
        * tree-optimize.c: Include tree-dchain.h.
        * tree-optimize.c: Include tree-dchain.h.
        (optimize_function_tree): Unconditionally build and tear down
        (optimize_function_tree): Unconditionally build and tear down
        the backpointers for the statement chain.
        the backpointers for the statement chain.
2002-08-22  Diego Novillo  
2002-08-22  Diego Novillo  
        * tree-dfa.c (find_refs_in_stmt): Look for VARUSE references in
        * tree-dfa.c (find_refs_in_stmt): Look for VARUSE references in
        initialization expressions.
        initialization expressions.
        (find_refs_in_expr): Reformat.
        (find_refs_in_expr): Reformat.
        (remove_ref_from_list): Optimize for the common case of removing
        (remove_ref_from_list): Optimize for the common case of removing
        the head or the tail of the list.
        the head or the tail of the list.
        (add_ref_to_list_end): Reformat comment.
        (add_ref_to_list_end): Reformat comment.
        (create_ref): Store the reference to LHS of assignment expressions.
        (create_ref): Store the reference to LHS of assignment expressions.
        (dump_varref): Also dump immediate uses of PHI nodes.
        (dump_varref): Also dump immediate uses of PHI nodes.
        * tree-flow.h (IS_GHOST_DEF): Rename to IS_DEFAULT_DEF.  Update all
        * tree-flow.h (IS_GHOST_DEF): Rename to IS_DEFAULT_DEF.  Update all
        callers everywhere.
        callers everywhere.
        (struct tree_ann_def): Update comments for field 'currdef'.
        (struct tree_ann_def): Update comments for field 'currdef'.
        * tree-ssa-ccp.c (ssa_edges): Change type to ref_list.
        * tree-ssa-ccp.c (ssa_edges): Change type to ref_list.
        (SSA_NAME): Remove.
        (SSA_NAME): Remove.
        (initialize): New function
        (initialize): New function
        (finalize): New function.
        (finalize): New function.
        (visit_expression): Rename to visit_expression_for.  Update all
        (visit_expression): Rename to visit_expression_for.  Update all
        callers.
        callers.
        (visit_condexpr_for): New function.
        (visit_condexpr_for): New function.
        (visit_assignment): Rename to visit_assignment_for.  Update all
        (visit_assignment): Rename to visit_assignment_for.  Update all
        callers.
        callers.
        (examine_flow_edges): Rename to simulate_block.  Update all
        (examine_flow_edges): Rename to simulate_block.  Update all
        callers.
        callers.
        (follow_def_use_chains): Rename to simulate_def_use_chains.  Update
        (follow_def_use_chains): Rename to simulate_def_use_chains.  Update
        all callers.
        all callers.
        (evaluate_expr_for): Rename to evaluate_expr.  Change argument to
        (evaluate_expr_for): Rename to evaluate_expr.  Change argument to
        'tree'.
        'tree'.
        (set_lattice_value): New function.
        (set_lattice_value): New function.
        (tree_ssa_ccp): Change main loop to visit flow_edges and ssa_edges
        (tree_ssa_ccp): Change main loop to visit flow_edges and ssa_edges
        alternately.
        alternately.
        (visit_phi_node): Do not set the lattice value to UNDEFINED when we
        (visit_phi_node): Do not set the lattice value to UNDEFINED when we
        find a non-executable edge.
        find a non-executable edge.
        (visit_expression_for): Default definitions for PARM_DECLs are
        (visit_expression_for): Default definitions for PARM_DECLs are
        assigned a VARYING value.
        assigned a VARYING value.
        Default definitions for any other local variables are assigned an
        Default definitions for any other local variables are assigned an
        UNDEFINED value.
        UNDEFINED value.
        Clobber VARDEFs that are not the LHS of an assignment.
        Clobber VARDEFs that are not the LHS of an assignment.
        Clobber VARDEFs that initialize non-const static variables.
        Clobber VARDEFs that initialize non-const static variables.
        * tree-ssa.c (search_fud_chains): Set up def-use edges for PHI
        * tree-ssa.c (search_fud_chains): Set up def-use edges for PHI
        nodes and regular definitions.
        nodes and regular definitions.
        * tree.c (simple_cst_equal): Call simple_cst_list_equal to compare
        * tree.c (simple_cst_equal): Call simple_cst_list_equal to compare
        CONSTRUCTOR_ELTS pointers.
        CONSTRUCTOR_ELTS pointers.
2002-08-22  Diego Novillo  
2002-08-22  Diego Novillo  
        * c-pretty-print.c (buffer): New file local variable.
        * c-pretty-print.c (buffer): New file local variable.
        (initialized): New file local variable.
        (initialized): New file local variable.
        (print_c_tree): Don't call init_output_buffer.  Call
        (print_c_tree): Don't call init_output_buffer.  Call
        maybe_init_pretty_print.
        maybe_init_pretty_print.
        (print_c_node): Ditto.
        (print_c_node): Ditto.
        (print_c_node_brief): Ditto.
        (print_c_node_brief): Ditto.
        (maybe_init_pretty_print): New function.
        (maybe_init_pretty_print): New function.
        * tree-mudflap.c (mf_varname_tree): Only call init_output_buffer
        * tree-mudflap.c (mf_varname_tree): Only call init_output_buffer
        once.  Call output_clear_message_text before returning.
        once.  Call output_clear_message_text before returning.
2002-08-21  Frank Ch. Eigler  
2002-08-21  Frank Ch. Eigler  
        Support source-file/line coordinates in check/violation messages.
        Support source-file/line coordinates in check/violation messages.
        * tree-mudflap.c (mf_init_extern_trees): Add new "location" formal
        * tree-mudflap.c (mf_init_extern_trees): Add new "location" formal
        arg to __mf_check.
        arg to __mf_check.
        (mf_file_function_line_tree): New function to build an actual location
        (mf_file_function_line_tree): New function to build an actual location
        string.
        string.
        (build_check_statement_for): Call it / pass it.
        (build_check_statement_for): Call it / pass it.
        (mx_xfn_indirect_ref): Track source file/line location via
        (mx_xfn_indirect_ref): Track source file/line location via
        STMT_LINENO, FILE_STMT, EXPR_WITH_FILE_LOCATION traversal memos.
        STMT_LINENO, FILE_STMT, EXPR_WITH_FILE_LOCATION traversal memos.
2002-08-21  Daniel Berlin  
2002-08-21  Daniel Berlin  
        * dominance.c: Cache immediate dominators.
        * dominance.c: Cache immediate dominators.
2002-08-20  Daniel Berlin  
2002-08-20  Daniel Berlin  
        * tree-alias-steen.h (struct tree_alias_ops): Add flag for
        * tree-alias-steen.h (struct tree_alias_ops): Add flag for
        interprocedural.
        interprocedural.
        * tree-alias-steen.c (steen_alias_ops): Set interprocedural to 0
        * tree-alias-steen.c (steen_alias_ops): Set interprocedural to 0
        for now.
        for now.
        (intra_function_call): New function to handle intraprocedural calling.
        (intra_function_call): New function to handle intraprocedural calling.
        (finc_func_aliases): Use it.
        (finc_func_aliases): Use it.
        Handle *x = *y, *x = &y, and *x = (cast) y.
        Handle *x = *y, *x = &y, and *x = (cast) y.
        (display_points_to_set_helper): New function, split from ...
        (display_points_to_set_helper): New function, split from ...
        (display_points_to_set): Here.
        (display_points_to_set): Here.
        (create_alias_vars): Try to print all alias vars we find in the
        (create_alias_vars): Try to print all alias vars we find in the
        alias_vars array, rather than just those that are linked directly to
        alias_vars array, rather than just those that are linked directly to
        trees.
        trees.
        Clear arrays when we finish if we aren't interprocedural.
        Clear arrays when we finish if we aren't interprocedural.
2002-08-20  Frank Ch. Eigler  
2002-08-20  Frank Ch. Eigler  
        static object registration support:
        static object registration support:
        * tree-mudflap.c (mudflap_enqueue_decl, mudflap_enqueue_constant):
        * tree-mudflap.c (mudflap_enqueue_decl, mudflap_enqueue_constant):
        Replace stubs with real code.
        Replace stubs with real code.
        (mf_enqueue_register_call): New function to generate asm-object
        (mf_enqueue_register_call): New function to generate asm-object
        call to __mf_register.
        call to __mf_register.
        (mf_flush_enqueued_calls): New function to emit global ctor function
        (mf_flush_enqueued_calls): New function to emit global ctor function
        with enqueued __mf_register calls.
        with enqueued __mf_register calls.
        (mf_varname_tree): Tolerate being called from non-function context.
        (mf_varname_tree): Tolerate being called from non-function context.
        * c-objc-common.c: #include .
        * c-objc-common.c: #include .
        gengtypes support for mudflap:
        gengtypes support for mudflap:
        * Makefile.in (GTFILES): Include tree-mudflap.c.
        * Makefile.in (GTFILES): Include tree-mudflap.c.
        (gt-tree-mudflap.h): New target.
        (gt-tree-mudflap.h): New target.
        * tree-mudflap.c: Annotate global tree nodes with GTY(()).
        * tree-mudflap.c: Annotate global tree nodes with GTY(()).
        * tree-nomudflap.c: Add dummy ggc root table.
        * tree-nomudflap.c: Add dummy ggc root table.
2002-08-19  Diego Novillo  
2002-08-19  Diego Novillo  
        * tree-dfa.c (find_refs_in_expr): If the current sub-expression is
        * tree-dfa.c (find_refs_in_expr): If the current sub-expression is
        not SIMPLE, mark its parent.
        not SIMPLE, mark its parent.
        (create_ref): If the parent expression is not SIMPLE, create
        (create_ref): If the parent expression is not SIMPLE, create
        VARDEFs regardless of the original reference type.
        VARDEFs regardless of the original reference type.
        * tree-ssa-ccp.c (widen_bitfield): New function.
        * tree-ssa-ccp.c (widen_bitfield): New function.
        (evaluate_expr_for): Call it.
        (evaluate_expr_for): Call it.
2002-08-18  Diego Novillo  
2002-08-18  Diego Novillo  
        * tree-ssa-ccp.c (evaluate_expr_for): Fix thinko in
        * tree-ssa-ccp.c (evaluate_expr_for): Fix thinko in
        2002-08-17 patch.
        2002-08-17 patch.
2002-08-17  Diego Novillo  
2002-08-17  Diego Novillo  
        * tree-ssa-ccp.c (evaluate_expr_for): keep VARREF_SYM in a local
        * tree-ssa-ccp.c (evaluate_expr_for): keep VARREF_SYM in a local
        variable.
        variable.
2002-08-16  Diego Novillo  
2002-08-16  Diego Novillo  
        * basic-block.h (BB_CONTROL_EXPR): Update value.
        * basic-block.h (BB_CONTROL_EXPR): Update value.
        (BB_LOOP_CONTROL_EXPR): Define.
        (BB_LOOP_CONTROL_EXPR): Define.
        (BB_CONTROL_ENTRY): Update value.
        (BB_CONTROL_ENTRY): Update value.
        * tree-cfg.c (make_for_stmt_blocks): Flag header blocks withh
        * tree-cfg.c (make_for_stmt_blocks): Flag header blocks withh
        BB_LOOP_CONTROL_EXPR.
        BB_LOOP_CONTROL_EXPR.
        (make_while_stmt_blocks): Ditto.
        (make_while_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (tree_delete_bb): Update annotations in the loop entry block when
        (tree_delete_bb): Update annotations in the loop entry block when
        removing one of the loop expression blocks.
        removing one of the loop expression blocks.
        * tree-dfa.c (tree_find_varrefs): Disregard empty blocks.
        * tree-dfa.c (tree_find_varrefs): Disregard empty blocks.
        (find_refs_in_stmt): Handle all the loop expression blocks in
        (find_refs_in_stmt): Handle all the loop expression blocks in
        FOR_STMT and DO_STMT nodes.
        FOR_STMT and DO_STMT nodes.
        (find_refs_in_expr): Change first argument to tree *.  Update all
        (find_refs_in_expr): Change first argument to tree *.  Update all
        callers.
        callers.
        Force all references to be definitions when the expression is not
        Force all references to be definitions when the expression is not
        in SIMPLE form.
        in SIMPLE form.
        Also create references for compound variables and array references.
        Also create references for compound variables and array references.
        Not just their individual components.
        Not just their individual components.
        Always use the original parent expression when making recursive
        Always use the original parent expression when making recursive
        calls.
        calls.
        (create_ref): Add new argument operand_p.  Update all callers.
        (create_ref): Add new argument operand_p.  Update all callers.
        (remove_tree_ann): New function.
        (remove_tree_ann): New function.
        (dump_varref): Don't assume that the referenced symbol is a _DECL
        (dump_varref): Don't assume that the referenced symbol is a _DECL
        node.
        node.
        * tree-flow.h (treeref_common): Add field operand_p.
        * tree-flow.h (treeref_common): Add field operand_p.
        (VARREF_OPERAND_P): Define.
        (VARREF_OPERAND_P): Define.
        (BB_EMPTY_P): Define.
        (BB_EMPTY_P): Define.
        (remove_tree_ann): Declare.
        (remove_tree_ann): Declare.
        (create_ref): Add new argument operand_p.
        (create_ref): Add new argument operand_p.
        * tree-simple.c (get_base_symbol): New function.
        * tree-simple.c (get_base_symbol): New function.
        * tree-simple.h (get_base_symbol): Declare.
        * tree-simple.h (get_base_symbol): Declare.
        * tree-ssa-ccp.c (visit_assignment): Call it.
        * tree-ssa-ccp.c (visit_assignment): Call it.
        (ssa_ccp_substitute_constants): Use VARREF_OPERAND_P to replace
        (ssa_ccp_substitute_constants): Use VARREF_OPERAND_P to replace
        values into the expression.
        values into the expression.
        (evaluate_expr_for): Ditto.
        (evaluate_expr_for): Ditto.
        Do not try to evaluate the expression if the reference is not of
        Do not try to evaluate the expression if the reference is not of
        the same type as the expression.
        the same type as the expression.
        After evaluation, restore the expression to its original form.
        After evaluation, restore the expression to its original form.
        * tree-ssa-pre.c (insert_occ_in_preorder_dt_order_): Update calls
        * tree-ssa-pre.c (insert_occ_in_preorder_dt_order_): Update calls
        to create_ref.
        to create_ref.
        (finalize_): Ditto.
        (finalize_): Ditto.
        (expr_phi_insertion): Ditto.
        (expr_phi_insertion): Ditto.
        * tree-ssa.c (tree_build_ssa): Ditto.
        * tree-ssa.c (tree_build_ssa): Ditto.
        (insert_phi_terms): Ditto.
        (insert_phi_terms): Ditto.
        (delete_ssa): Call remove_tree_ann.
        (delete_ssa): Call remove_tree_ann.
2002-08-15  Diego Novillo  
2002-08-15  Diego Novillo  
        * c-pretty-print.c: Move extern definitions to diagnostic.h.
        * c-pretty-print.c: Move extern definitions to diagnostic.h.
        (print_c_node_brief): New function.
        (print_c_node_brief): New function.
        (debug_c_node_brief): New function.
        (debug_c_node_brief): New function.
        (debug_c_node): Add option for showing brief versions of statement
        (debug_c_node): Add option for showing brief versions of statement
        nodes.  Update all callers.
        nodes.  Update all callers.
        (print_declaration): Ditto.
        (print_declaration): Ditto.
        * c-simplify.c (simplify_function_tree): Add newline to debug
        * c-simplify.c (simplify_function_tree): Add newline to debug
        output.
        output.
        * c-tree.h (print_c_node_brief): Declare.
        * c-tree.h (print_c_node_brief): Declare.
        (debug_c_node_brief): Declare.
        (debug_c_node_brief): Declare.
        * tree-cfg.c: Call print_c_node_brief in debugging otuput.
        * tree-cfg.c: Call print_c_node_brief in debugging otuput.
        * tree-mudflap.c (dump_c_node): Remove extern declaration.
        * tree-mudflap.c (dump_c_node): Remove extern declaration.
        (mf_varname_tree): Update call to dump_c_node.
        (mf_varname_tree): Update call to dump_c_node.
2002-08-15  Daniel Berlin  
2002-08-15  Daniel Berlin  
        * tree-cfg.c (find_expr_in_tree_helper): Renamed from find_expr_in_tree.
        * tree-cfg.c (find_expr_in_tree_helper): Renamed from find_expr_in_tree.
        (find_expr_in_tree): Redone.
        (find_expr_in_tree): Redone.
2002-08-15  Daniel Berlin  
2002-08-15  Daniel Berlin  
        * tree-cfg.c (insert_before_ctrl_stmt): Fix insertion for various
        * tree-cfg.c (insert_before_ctrl_stmt): Fix insertion for various
        parts of for loop.
        parts of for loop.
        * tree-ssa-pre.c (finalize_1): Set EXPR_STMT type to type of
        * tree-ssa-pre.c (finalize_1): Set EXPR_STMT type to type of
        expression in it.
        expression in it.
2002-08-14  Frank Ch. Eigler  
2002-08-14  Frank Ch. Eigler  
        * gcc.c (LINK_COMMAND_SPEC): Tweak placement of %(mflib).
        * gcc.c (LINK_COMMAND_SPEC): Tweak placement of %(mflib).
2002-08-14  Diego Novillo  
2002-08-14  Diego Novillo  
        * tree-simple.h (is_simple_decl_stmt): Declare.
        * tree-simple.h (is_simple_decl_stmt): Declare.
2002-08-13  Frank Ch. Eigler  
2002-08-13  Frank Ch. Eigler  
        * gcc.c (MFWRAP_SPEC, MFLIB_SPEC): New macros, splitting MFLIB_SPEC.
        * gcc.c (MFWRAP_SPEC, MFLIB_SPEC): New macros, splitting MFLIB_SPEC.
        (mfwrap_spec, mflib_spec): Define corresponding vars.
        (mfwrap_spec, mflib_spec): Define corresponding vars.
        (static_specs): Define correponding spec aliases.
        (static_specs): Define correponding spec aliases.
        (LINK_COMMAND_SPEC): Include -fmudflap refs to new spec aliases.
        (LINK_COMMAND_SPEC): Include -fmudflap refs to new spec aliases.
        (cpp_unique_options): Move -fmudflap MFCPP_SPEC clause here.
        (cpp_unique_options): Move -fmudflap MFCPP_SPEC clause here.
        (cc1_options): Move -fmudflap MFCC1_SPEC clause here.
        (cc1_options): Move -fmudflap MFCC1_SPEC clause here.
        (MFCC1_SPEC, MFCPP_SPEC, MFLIB_SPEC): Remove macros and uses.
        (MFCC1_SPEC, MFCPP_SPEC, MFLIB_SPEC): Remove macros and uses.
2002-08-13  Graydon Hoare  
2002-08-13  Graydon Hoare  
        * tree-mudflap.c (mf_build_check_statement_for): Factor code out of
        * tree-mudflap.c (mf_build_check_statement_for): Factor code out of
        mx_xfn_indirect_ref for use in ARRAY_REF case.
        mx_xfn_indirect_ref for use in ARRAY_REF case.
        (mf_build_check_statement_for): Check size of underlying object
        (mf_build_check_statement_for): Check size of underlying object
        rather than size of pointer.
        rather than size of pointer.
        (mx_xfn_indirect_ref): Check ARRAY_REF expressions.
        (mx_xfn_indirect_ref): Check ARRAY_REF expressions.
        (mf_offset_expr_of_array_ref): New function to calculate array ref
        (mf_offset_expr_of_array_ref): New function to calculate array ref
        offsets.
        offsets.
2002-08-13  Diego Novillo  
2002-08-13  Diego Novillo  
        * tree-simple.c (is_simple_condexpr): Update comment.
        * tree-simple.c (is_simple_condexpr): Update comment.
        * tree-ssa-ccp.c (ssa_ccp_substitute_constants): Add debugging code.
        * tree-ssa-ccp.c (ssa_ccp_substitute_constants): Add debugging code.
2002-08-12  Jason Merrill  
2002-08-12  Jason Merrill  
        * c-typeck.c (build_component_ref): Don't add a NON_LVALUE_EXPR
        * c-typeck.c (build_component_ref): Don't add a NON_LVALUE_EXPR
        in C99 mode.
        in C99 mode.
        * c-simplify.c (simplify_expr): Always simplify.  Loop if *expr_p
        * c-simplify.c (simplify_expr): Always simplify.  Loop if *expr_p
        changed.
        changed.
        (simplify_addr_expr): Just replace *expr_p if we have a '&*'.
        (simplify_addr_expr): Just replace *expr_p if we have a '&*'.
        * tree-simple.c (is_simplifiable_builtin): Add more tree codes.
        * tree-simple.c (is_simplifiable_builtin): Add more tree codes.
2002-08-11  Diego Novillo  
2002-08-11  Diego Novillo  
        * c-simplify.c: Fix typo.  Substitute CHECKING with ENABLE_CHECKING.
        * c-simplify.c: Fix typo.  Substitute CHECKING with ENABLE_CHECKING.
        * tree-cfg.c: Ditto.
        * tree-cfg.c: Ditto.
        * tree-dfa.c: Ditto.
        * tree-dfa.c: Ditto.
        * tree-ssa-ccp.c: Ditto.
        * tree-ssa-ccp.c: Ditto.
        * tree-ssa.c: Ditto.
        * tree-ssa.c: Ditto.
2002-08-11  Diego Novillo  
2002-08-11  Diego Novillo  
        * tree-dfa.c (find_refs_in_expr): Use the given ref_type for some unary
        * tree-dfa.c (find_refs_in_expr): Use the given ref_type for some unary
        expressions.
        expressions.
        (create_ref): Insert ghost definitions at the beginning of the
        (create_ref): Insert ghost definitions at the beginning of the
        basic block.
        basic block.
        (find_expr_in_tree): Ignore IDENTIFIER_NODE.
        (find_expr_in_tree): Ignore IDENTIFIER_NODE.
        * tree-flow.h (treeref_common): Move the id field to the end of the
        * tree-flow.h (treeref_common): Move the id field to the end of the
        structure.
        structure.
        (IS_GHOST_DEF): Redefine to return non zero for definitions
        (IS_GHOST_DEF): Redefine to return non zero for definitions
        without an associated expression in basic block 0.
        without an associated expression in basic block 0.
        * tree-ssa-ccp.c (tree_ssa_ccp): Use last_basic_block to allocate
        * tree-ssa-ccp.c (tree_ssa_ccp): Use last_basic_block to allocate
        executable_blocks.
        executable_blocks.
        (visit_expression): Set the lattice value for ghost definitions to
        (visit_expression): Set the lattice value for ghost definitions to
        VARYING.
        VARYING.
        (examine_flow_edges): Update comments.
        (examine_flow_edges): Update comments.
        * tree-ssa.c (tree_build_ssa): Create ghost definitions in basic
        * tree-ssa.c (tree_build_ssa): Create ghost definitions in basic
        block 0.
        block 0.
        (insert_phi_terms): Don't ignore ghost definitions.
        (insert_phi_terms): Don't ignore ghost definitions.
        * c-simplify.c (simplify_function_tree): Return 0 if the function's
        * c-simplify.c (simplify_function_tree): Return 0 if the function's
        body is not a COMPOUND_STMT.
        body is not a COMPOUND_STMT.
        Return 0 if simplification failed.
        Return 0 if simplification failed.
        (simplify_expr): Change to return int.  Return non zero if
        (simplify_expr): Change to return int.  Return non zero if
        simplification was successful.
        simplification was successful.
        (c_simplify_expr): Add default case to avoid compile time warnings.
        (c_simplify_expr): Add default case to avoid compile time warnings.
        (create_tmp_alias_var): Reformat comment.
        (create_tmp_alias_var): Reformat comment.
        * tree-simple.h (simplify_expr): Change return type to int.
        * tree-simple.h (simplify_expr): Change return type to int.
        * c-simplify.c: Guard consistency checks with #if defined CHECKING
        * c-simplify.c: Guard consistency checks with #if defined CHECKING
        everywhere.
        everywhere.
        * tree-cfg.c: Ditto.
        * tree-cfg.c: Ditto.
        * tree-dfa.c: Ditto.
        * tree-dfa.c: Ditto.
        * tree-ssa-ccp.c: Ditto.
        * tree-ssa-ccp.c: Ditto.
        * tree-ssa.c: Ditto.
        * tree-ssa.c: Ditto.
        * c-simplify.c: Include hard-reg-set.h, basic-block.h and
        * c-simplify.c: Include hard-reg-set.h, basic-block.h and
        tree-flow.h.
        tree-flow.h.
        (mark_not_simple_r): New function.
        (mark_not_simple_r): New function.
        (simplify_expr): Temporarily mark VA_ARG_EXPR and BIT_FIELD_REF
        (simplify_expr): Temporarily mark VA_ARG_EXPR and BIT_FIELD_REF
        trees as not simplifiable.
        trees as not simplifiable.
        (simplify_call_expr): If the builtin cannot be simplified, flag it.
        (simplify_call_expr): If the builtin cannot be simplified, flag it.
        * Makefile.in (c-simplify.o): Update dependencies.
        * Makefile.in (c-simplify.o): Update dependencies.
        * tree-dfa.c (create_ref): Variable references inside
        * tree-dfa.c (create_ref): Variable references inside
        non-simplifiable expressions are always considered definitions.
        non-simplifiable expressions are always considered definitions.
        * tree-flow.h (TF_NOT_SIMPLE): New flag.
        * tree-flow.h (TF_NOT_SIMPLE): New flag.
        * tree-simple.c (is_simplifiable_builtin): Update comments.
        * tree-simple.c (is_simplifiable_builtin): Update comments.
        * c-pretty-print.c (dump_c_node): Unparse anonymous structures and
        * c-pretty-print.c (dump_c_node): Unparse anonymous structures and
        unions.
        unions.
        Change rendering for SAVE_EXPR and BIT_FIELD_REF.
        Change rendering for SAVE_EXPR and BIT_FIELD_REF.
        * Makefile.in (tree-mudflap.o, tree-nomudflap.o): Add.
        * Makefile.in (tree-mudflap.o, tree-nomudflap.o): Add.
2002-08-11  Frank Ch. Eigler  
2002-08-11  Frank Ch. Eigler  
        Prototype -fmudflap support.
        Prototype -fmudflap support.
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-mudflap.o.
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-mudflap.o.
        (OBJS): Add tree-nomudflap.o.
        (OBJS): Add tree-nomudflap.o.
        * flags.h (flag_mudflap): New flag.
        * flags.h (flag_mudflap): New flag.
        * toplev.c: Map "-fmudflap" to that flag.
        * toplev.c: Map "-fmudflap" to that flag.
        * c-decl.c (c_expand_body): Call mudflap_c_function if flag_mudflap.
        * c-decl.c (c_expand_body): Call mudflap_c_function if flag_mudflap.
        * c-objc-common.c (c_objc_common_finish_file): Add mudflap hook.
        * c-objc-common.c (c_objc_common_finish_file): Add mudflap hook.
        * varasm.c (make_decl_rtl): Add mudflap hook.
        * varasm.c (make_decl_rtl): Add mudflap hook.
        (output_constant_def_contents): Ditto.
        (output_constant_def_contents): Ditto.
        * tree-mudflap.c: New file: implement mudflap instrumentation.
        * tree-mudflap.c: New file: implement mudflap instrumentation.
        * tree-nomudflap.c: New file: stub functions for non-C frontends.
        * tree-nomudflap.c: New file: stub functions for non-C frontends.
        * tree-mudflap.h: New file: define exported functions.
        * tree-mudflap.h: New file: define exported functions.
        * gcc.c (MFLIB_SPEC, MFCC1_SPEC, MFCPP_SPEC): Add general
        * gcc.c (MFLIB_SPEC, MFCC1_SPEC, MFCPP_SPEC): Add general
        -fmudflap spec mappings.
        -fmudflap spec mappings.
        * c-simplify.c (simplify_stmt): Stub: handle CLEANUP_STMT nodes.
        * c-simplify.c (simplify_stmt): Stub: handle CLEANUP_STMT nodes.
        * tree-dfa.c (find_refs_in_stmt): Ditto.
        * tree-dfa.c (find_refs_in_stmt): Ditto.
        * c-pretty-print.c (dump_c_node): Ditto.
        * c-pretty-print.c (dump_c_node): Ditto.
        (print_declaration): Handle "extern" decls.  Handle arrays with
        (print_declaration): Handle "extern" decls.  Handle arrays with
        indefinite sizes.
        indefinite sizes.
        * tree-simple.h (is_simple_stmt, is_simple_compstmt): Remove decls.
        * tree-simple.h (is_simple_stmt, is_simple_compstmt): Remove decls.
2002-08-11  Jason Merrill  
2002-08-11  Jason Merrill  
        * c-simplify.c (simplify_self_mod_expr): Unshare the lhs before
        * c-simplify.c (simplify_self_mod_expr): Unshare the lhs before
        using it again.
        using it again.
        (simplify_compound_lval): Don't unshare.
        (simplify_compound_lval): Don't unshare.
        * c-simplify.c (c_simplify_expr): Check statement_code_p.
        * c-simplify.c (c_simplify_expr): Check statement_code_p.
        * c-simplify.c (maybe_fixup_loop_cond): Move to cp/cp-simplify.c.
        * c-simplify.c (maybe_fixup_loop_cond): Move to cp/cp-simplify.c.
        (simplify_for_stmt): Don't call it.
        (simplify_for_stmt): Don't call it.
        (simplify_while_stmt): Don't call it.
        (simplify_while_stmt): Don't call it.
2002-08-11  Diego Novillo  
2002-08-11  Diego Novillo  
        * c-simplify.c (simplify_compound_lval): Use mostly_copy_tree_r.
        * c-simplify.c (simplify_compound_lval): Use mostly_copy_tree_r.
2002-08-09  Jason Merrill  
2002-08-09  Jason Merrill  
        * langhooks-def.h: Replace the simplify_function_tree hook
        * langhooks-def.h: Replace the simplify_function_tree hook
        with a simplify_expr hook.
        with a simplify_expr hook.
        * langhooks.h: Likewise.
        * langhooks.h: Likewise.
        * langhooks.c: Replace lhd_simplify_function_tree with
        * langhooks.c: Replace lhd_simplify_function_tree with
        lhd_simplify_expr.
        lhd_simplify_expr.
        * c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Don't define.
        * c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Don't define.
        (LANG_HOOKS_SIMPLIFY_EXPR): Define.
        (LANG_HOOKS_SIMPLIFY_EXPR): Define.
        * c-decl.c (c_expand_body): De-hook simplify_function_tree.
        * c-decl.c (c_expand_body): De-hook simplify_function_tree.
        * c-common.h: Declare c_simplify_expr.
        * c-common.h: Declare c_simplify_expr.
        * c-simplify.c (simplify_function_tree): Rename from
        * c-simplify.c (simplify_function_tree): Rename from
        c_simplify_function_tree.  Call simplify_expr instead of
        c_simplify_function_tree.  Call simplify_expr instead of
        simplify_stmt.
        simplify_stmt.
        (c_simplify_expr): Split out from...
        (c_simplify_expr): Split out from...
        (simplify_expr): ...here.  No longer static.  Call langhook.
        (simplify_expr): ...here.  No longer static.  Call langhook.
        (is_simple_decl_stmt): Move here from tree-simple.c.
        (is_simple_decl_stmt): Move here from tree-simple.c.
        * tree-simple.c: Don't include c-tree.h.
        * tree-simple.c: Don't include c-tree.h.
        (is_simple_stmt, is_simple_compstmt): Remove.
        (is_simple_stmt, is_simple_compstmt): Remove.
        (is_simple_decl_stmt): Move to c-simplify.c.
        (is_simple_decl_stmt): Move to c-simplify.c.
        * tree.h: Declare simplify_function_tree.
        * tree.h: Declare simplify_function_tree.
        * tree-simple.h: Declare simplify_expr, add_tree.
        * tree-simple.h: Declare simplify_expr, add_tree.
        * tree-simple.c (rationalize_compound_expr): New fn.
        * tree-simple.c (rationalize_compound_expr): New fn.
2002-08-07  Diego Novillo  
2002-08-07  Diego Novillo  
        * basic-block.h (EDGE_TRUE_VALUE): Define.
        * basic-block.h (EDGE_TRUE_VALUE): Define.
        (EDGE_FALSE_VALUE): Define.
        (EDGE_FALSE_VALUE): Define.
        * tree-cfg.c: Include c-tree.h.
        * tree-cfg.c: Include c-tree.h.
        (make_for_stmt_edges): Call simple_cst_equal to determine infinite
        (make_for_stmt_edges): Call simple_cst_equal to determine infinite
        and zero iteration loops.
        and zero iteration loops.
        Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to edges coming out of
        Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to edges coming out of
        predicate block.
        predicate block.
        (make_while_stmt_edges): Ditto.
        (make_while_stmt_edges): Ditto.
        (make_do_stmt_edges): Ditto.
        (make_do_stmt_edges): Ditto.
        (make_if_stmt_edges): Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to
        (make_if_stmt_edges): Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to
        edges coming out of predicate block.
        edges coming out of predicate block.
        * c-simplify.c (simplify_compound_lval): Unshare the compound
        * c-simplify.c (simplify_compound_lval): Unshare the compound
        reference before simplification.
        reference before simplification.
        * tree-cfg.c (insert_before_ctrl_stmt): Call print_c_node instead of
        * tree-cfg.c (insert_before_ctrl_stmt): Call print_c_node instead of
        print_node_brief.
        print_node_brief.
        (insert_before_normal_stmt): Ditto.
        (insert_before_normal_stmt): Ditto.
        (insert_after_ctrl_stmt): Ditto.
        (insert_after_ctrl_stmt): Ditto.
        (insert_after_normal_stmt): Ditto.
        (insert_after_normal_stmt): Ditto.
        (insert_after_loop_body): Ditto.
        (insert_after_loop_body): Ditto.
        (replace_expr_in_tree): Ditto.
        (replace_expr_in_tree): Ditto.
        (tree_dump_bb): Ditto.
        (tree_dump_bb): Ditto.
        * tree-dfa.c: Include c-tree.h
        * tree-dfa.c: Include c-tree.h
        (next_varref_id): New global variable.
        (next_varref_id): New global variable.
        (tree_find_varrefs): Initialize it to 0.
        (tree_find_varrefs): Initialize it to 0.
        (create_ref): Increment it after creating a new reference.  Store
        (create_ref): Increment it after creating a new reference.  Store
        it in ref.common.id.
        it in ref.common.id.
        Add the new reference to the list of references for the containing
        Add the new reference to the list of references for the containing
        expression.
        expression.
        (dump_varref): Show the reference ID.
        (dump_varref): Show the reference ID.
        * tree-flow.h (treeref_common): Add field 'id'.
        * tree-flow.h (treeref_common): Add field 'id'.
        (VARREF_ID): Define.
        (VARREF_ID): Define.
        * tree-dump.c (dump_files): Re-order dump files.
        * tree-dump.c (dump_files): Re-order dump files.
        * tree.h (tree_dump_index): Ditto.
        * tree.h (tree_dump_index): Ditto.
        * tree-optimize.c (optimize_function_tree): Remove blank lines.
        * tree-optimize.c (optimize_function_tree): Remove blank lines.
        * tree-simple.c: Remove unary operator '!' from grammar.
        * tree-simple.c: Remove unary operator '!' from grammar.
        * tree-flow.h (tree_ann_def): Add field 'flags'.
        * tree-flow.h (tree_ann_def): Add field 'flags'.
        (TF_FOLD): Define.
        (TF_FOLD): Define.
        (TREE_ANN): Re-define into an lvalue.
        (TREE_ANN): Re-define into an lvalue.
        (BB_FOR_STMT): Ditto.
        (BB_FOR_STMT): Ditto.
        (TREE_CURRDEF): Ditto.
        (TREE_CURRDEF): Ditto.
        (next_varref_id): Declare.
        (next_varref_id): Declare.
        * tree-ssa-ccp.c: Include tree-simple.h
        * tree-ssa-ccp.c: Include tree-simple.h
        (ssa_edges): Convert sbitmap into varray_type.  Update all uses.
        (ssa_edges): Convert sbitmap into varray_type.  Update all uses.
        (decl_map): Remove.
        (decl_map): Remove.
        (SSA_NAME): Use VARREF_ID instead of DECL_UID.
        (SSA_NAME): Use VARREF_ID instead of DECL_UID.
        (visit_assignment): New function.
        (visit_assignment): New function.
        (evaluate_expr_for): New function.
        (evaluate_expr_for): New function.
        (dump_lattice_value): New function.
        (dump_lattice_value): New function.
        (tree_ssa_ccp): Add debugging dumps.
        (tree_ssa_ccp): Add debugging dumps.
        Remove #if 0 code everywhere.
        Remove #if 0 code everywhere.
        (visit_phi_node): Add debugging dumps.
        (visit_phi_node): Add debugging dumps.
        Also visit PHI arguments.
        Also visit PHI arguments.
        Remove basic block argument
        Remove basic block argument
        (visit_expression): Re-implement.
        (visit_expression): Re-implement.
        (examine_flow_edges): Add debugging dumps.
        (examine_flow_edges): Add debugging dumps.
        (ssa_ccp_substitute_constants): Add debugging dumps.
        (ssa_ccp_substitute_constants): Add debugging dumps.
        Update comments.
        Update comments.
        Mark and fold expressions with substituted constants.
        Mark and fold expressions with substituted constants.
        * tree-ssa.c (search_fud_chains): Don't check if BB_REFS(bb) is
        * tree-ssa.c (search_fud_chains): Don't check if BB_REFS(bb) is
        empty before iterating.
        empty before iterating.
        Add comment explaining how we chain PHI node arguments to their
        Add comment explaining how we chain PHI node arguments to their
        originating basic block.
        originating basic block.
        * Makefile.in (tree-cfg.o, tree-dfa.o, tree-ssa-ccp.o): Update
        * Makefile.in (tree-cfg.o, tree-dfa.o, tree-ssa-ccp.o): Update
        dependencies.
        dependencies.
2002-07-29  Daniel Berlin  
2002-07-29  Daniel Berlin  
        * tree-ssa-pre.c (tree_perform_ssapre): Ben forgot to add a
        * tree-ssa-pre.c (tree_perform_ssapre): Ben forgot to add a
        dump_begin call when he removed the before dump.
        dump_begin call when he removed the before dump.
2002-07-24  Daniel Berlin  
2002-07-24  Daniel Berlin  
        * tree-alias-ecr.c (ECR_new_with_type): Use correct number in mapping.
        * tree-alias-ecr.c (ECR_new_with_type): Use correct number in mapping.
2002-07-23  Daniel Berlin  
2002-07-23  Daniel Berlin  
        * c-simplify.c (simplify_for_stmt): Deep copy the result of the
        * c-simplify.c (simplify_for_stmt): Deep copy the result of the
        tail_expression, so it's unshared.
        tail_expression, so it's unshared.
2002-07-23  Daniel Berlin  
2002-07-23  Daniel Berlin  
        * tree-flow.h: Add prototype for create_alias_vars.
        * tree-flow.h: Add prototype for create_alias_vars.
        * tree-alias-steen.c (display_points_to_set): New function.
        * tree-alias-steen.c (display_points_to_set): New function.
        (init_alias_vars): Display points to sets when we are done.
        (init_alias_vars): Display points to sets when we are done.
        * disjoint-set.h (disjoint_set_def): ptr_alias to ECR_def so that
        * disjoint-set.h (disjoint_set_def): ptr_alias to ECR_def so that
        we mark parent properly.
        we mark parent properly.
2002-07-24  Diego Novillo  
2002-07-24  Diego Novillo  
        * Makefile.in (GTFILES): Move tree-alias-type.[ch],
        * Makefile.in (GTFILES): Move tree-alias-type.[ch],
        tree-alias-ecr.[ch], tree-alias-steen.[ch] from ...
        tree-alias-ecr.[ch], tree-alias-steen.[ch] from ...
        * c-config-lang.in (gtfiles): ... here.
        * c-config-lang.in (gtfiles): ... here.
        * tree-simple.c (is_simplifiable_builtin): Replace
        * tree-simple.c (is_simplifiable_builtin): Replace
        BUILT_IN_VARARGS_START with BUILT_IN_VA_START.
        BUILT_IN_VARARGS_START with BUILT_IN_VA_START.
2002-07-23  Andreas Jaeger  
2002-07-23  Andreas Jaeger  
        * tree-ssa-pre.c (hash_expr_tree): Remove.
        * tree-ssa-pre.c (hash_expr_tree): Remove.
        * c-call-graph.c (write_dtd): Remove.
        * c-call-graph.c (write_dtd): Remove.
        * tree-ssa.c (delete_refs): Remove.
        * tree-ssa.c (delete_refs): Remove.
2002-07-23  Andreas Jaeger  
2002-07-23  Andreas Jaeger  
        * gengtype.c (open_base_files): Add tree.h.
        * gengtype.c (open_base_files): Add tree.h.
        * tree-alias-type.h: Remove inclusion of tree.h.
        * tree-alias-type.h: Remove inclusion of tree.h.
        * tree-alias-steen.c: Include tree.h.
        * tree-alias-steen.c: Include tree.h.
        Add prototype for create_fun_alias_var_ptf.
        Add prototype for create_fun_alias_var_ptf.
        * tree-alias-ecr.c: Add prototype for ECR_add_pending.
        * tree-alias-ecr.c: Add prototype for ECR_add_pending.
        * tree-ssa-pre.c (calculate_preorder): Remove unused variables.
        * tree-ssa-pre.c (calculate_preorder): Remove unused variables.
        * tree-simple.c: Include expr.h and rtl.h for prototypes.
        * tree-simple.c: Include expr.h and rtl.h for prototypes.
        * tree-optimize.c: Include tree-alias-steen.h for prototypes.
        * tree-optimize.c: Include tree-alias-steen.h for prototypes.
        * Makefile.in (tree-optimize.o): Add tree-alias-steen.h.
        * Makefile.in (tree-optimize.o): Add tree-alias-steen.h.
        (tree-simple.o): Add expr.h and rtl.h.
        (tree-simple.o): Add expr.h and rtl.h.
        (tree-alias-steen.o): Add tree.h.
        (tree-alias-steen.o): Add tree.h.
        * diagnostic.h: Add declaration of debug_output_buffer.
        * diagnostic.h: Add declaration of debug_output_buffer.
        * c-call-graph.c (construct_call_graph): Make static to follow
        * c-call-graph.c (construct_call_graph): Make static to follow
        declaration.
        declaration.
        (construct_call_graph): Use #if 0 instead of C++ comments to
        (construct_call_graph): Use #if 0 instead of C++ comments to
        disable code.
        disable code.
2002-07-20  Andreas Jaeger  
2002-07-20  Andreas Jaeger  
        * doc/invoke.texi (Option Summary): Fix syntax.
        * doc/invoke.texi (Option Summary): Fix syntax.
2002-07-19  Jason Merrill  
2002-07-19  Jason Merrill  
        * c-simplify.c (simplify_return_stmt): Do simplify a returned
        * c-simplify.c (simplify_return_stmt): Do simplify a returned
        expression in a void function.
        expression in a void function.
        * c-simplify.c (simplify_stmt_expr): Handle C++ return semantics.
        * c-simplify.c (simplify_stmt_expr): Handle C++ return semantics.
2002-07-19  Jason Merrill  
2002-07-19  Jason Merrill  
        * c-pretty-print.c (dump_c_node) [TARGET_EXPR]: Handle.
        * c-pretty-print.c (dump_c_node) [TARGET_EXPR]: Handle.
        [COND_EXPR]: Print a returned expression in a void function.
        [COND_EXPR]: Print a returned expression in a void function.
2002-07-19  Ben Elliston  
2002-07-19  Ben Elliston  
        * tree-ssa-pre.c (tree_perform_ssapre): Don't dump the original
        * tree-ssa-pre.c (tree_perform_ssapre): Don't dump the original
        tree before applying this optimisation.
        tree before applying this optimisation.
        * flags.h (flag_dump_tree_all_ssa): New flag.
        * flags.h (flag_dump_tree_all_ssa): New flag.
        * toplev.c (flag_dump_tree_all_ssa): New flag.
        * toplev.c (flag_dump_tree_all_ssa): New flag.
        (f_options): Add "dump-tree-all-ssa" option.
        (f_options): Add "dump-tree-all-ssa" option.
        (process_options): Process flag_dump_tree_all_ssa.
        (process_options): Process flag_dump_tree_all_ssa.
        * tree.h (dump_enable_all_ssa): Declare.
        * tree.h (dump_enable_all_ssa): Declare.
        * tree-dump.c (dump_enable_all_ssa): New function.
        * tree-dump.c (dump_enable_all_ssa): New function.
        * doc/invoke.texi (Option Summary): Add -fdump-tree-all-ssa and
        * doc/invoke.texi (Option Summary): Add -fdump-tree-all-ssa and
        -fdump-tree-ssapre options.
        -fdump-tree-ssapre options.
        (Debugging Options): Describe in more detail.
        (Debugging Options): Describe in more detail.
        * c-simplify.c (c_simplify_function_tree): Dump the original tree
        * c-simplify.c (c_simplify_function_tree): Dump the original tree
        only if a TDI_original dump is requested, rather than TDI_simple.
        only if a TDI_original dump is requested, rather than TDI_simple.
        * tree-dump.c (dump_begin): Include phase number in dump filename.
        * tree-dump.c (dump_begin): Include phase number in dump filename.
2002-07-18  Ben Elliston  
2002-07-18  Ben Elliston  
        * tree-dump.c (dump_files): Rename "unparse" to "raw".
        * tree-dump.c (dump_files): Rename "unparse" to "raw".
        * tree.h (TDF_UNPARSE): Rename from this ..
        * tree.h (TDF_UNPARSE): Rename from this ..
        (TDF_RAW): .. to this.
        (TDF_RAW): .. to this.
        * tree-ssa-pre.c (tree_perform_ssapre): Use TDF_RAW and invert the
        * tree-ssa-pre.c (tree_perform_ssapre): Use TDF_RAW and invert the
        logical sense of this flag.
        logical sense of this flag.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        * tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
        * c-simplify.c (c_simplify_function_tree): Likewise.
        * c-simplify.c (c_simplify_function_tree): Likewise.
2002-07-18  Daniel Berlin  
2002-07-18  Daniel Berlin  
        * tree-ssa-pre.c (calculate_preorder): New function.
        * tree-ssa-pre.c (calculate_preorder): New function.
        (tree_perform_ssapre): Use it, rather than
        (tree_perform_ssapre): Use it, rather than
        flow_compute_preorder_tranversal, which seems to not do
        flow_compute_preorder_tranversal, which seems to not do
        what we want.
        what we want.
2002-07-18  Daniel Berlin 
2002-07-18  Daniel Berlin 
        * tree-alias-type.c: Move gt-tree-alias-type include to end of file.
        * tree-alias-type.c: Move gt-tree-alias-type include to end of file.
        * tree-alias-steen.c: Move gt-tree-alias-steen include to end of file.
        * tree-alias-steen.c: Move gt-tree-alias-steen include to end of file.
2002-07-18  Daniel Berlin  
2002-07-18  Daniel Berlin  
        * gengtype.c (get_base_file_bitmap): Mark tree-alias-* and
        * gengtype.c (get_base_file_bitmap): Mark tree-alias-* and
        disjoint-set* as c/c++/objc files only.
        disjoint-set* as c/c++/objc files only.
        * Makefile.in (gt-tree-alias-type.h): Add.
        * Makefile.in (gt-tree-alias-type.h): Add.
        (tree-alias-type.o): Add dependency on gt-tree-alias-type.h.
        (tree-alias-type.o): Add dependency on gt-tree-alias-type.h.
        * tree-alias-type.c: Include gt-tree-alias-type.h.
        * tree-alias-type.c: Include gt-tree-alias-type.h.
        (alias_bottom): Add a GTY marked version of alias_bottom here.
        (alias_bottom): Add a GTY marked version of alias_bottom here.
        * tree-alias-type.h: Remove the GTY marker from alias_bottom.
        * tree-alias-type.h: Remove the GTY marker from alias_bottom.
2002-07-17  Daniel Berlin  
2002-07-17  Daniel Berlin  
        * tree-alias-ecr.c (ECR_union_pending_sets): Only clear bitmap if
        * tree-alias-ecr.c (ECR_union_pending_sets): Only clear bitmap if
        it's not NULL.
        it's not NULL.
2002-07-16  Jason Merrill  
2002-07-16  Jason Merrill  
        * c-simplify.c (add_tree): Build an EXPR_STMT immediately.
        * c-simplify.c (add_tree): Build an EXPR_STMT immediately.
        (convert_to_stmt_chain): Remove.
        (convert_to_stmt_chain): Remove.
        (simplify_stmt, simplify_for_stmt, simplify_while_stmt,
        (simplify_stmt, simplify_for_stmt, simplify_while_stmt,
        simplify_do_stmt, simplify_expr_wfl, tail_expression): Adjust.
        simplify_do_stmt, simplify_expr_wfl, tail_expression): Adjust.
2002-07-17  Daniel Berlin  
2002-07-17  Daniel Berlin  
        * tree-alias-ecr.c: New file. Equivalence Class Representation.
        * tree-alias-ecr.c: New file. Equivalence Class Representation.
        * tree-alias-steen.c: New file. Steengaard Alias Analysis.
        * tree-alias-steen.c: New file. Steengaard Alias Analysis.
        * disjoint-set.c: New file. Disjoint set data structure.
        * disjoint-set.c: New file. Disjoint set data structure.
        * tree-alias-type.c: New file. Alias types.
        * tree-alias-type.c: New file. Alias types.
        * c-simplify.c (create_tmp_alias_var): New function, like
        * c-simplify.c (create_tmp_alias_var): New function, like
        create_tmp_var, but doesn't add it to the current binding.
        create_tmp_var, but doesn't add it to the current binding.
        * tree-simple.h: Prototype for create_tmp_alias_var.
        * tree-simple.h: Prototype for create_tmp_alias_var.
        * tree-optimize.c (build_tree_ssa): Create alias variables, if
        * tree-optimize.c (build_tree_ssa): Create alias variables, if
        requested.
        requested.
        * flags.h: Add flag_tree_points_to.
        * flags.h: Add flag_tree_points_to.
        * toplev.c: Ditto.
        * toplev.c: Ditto.
        * gengtype.c (open_base_files): Add disjoint-set.h,
        * gengtype.c (open_base_files): Add disjoint-set.h,
        tree-alias-ecr.h, tree-alias-type.h, tree-flow.h.
        tree-alias-ecr.h, tree-alias-type.h, tree-flow.h.
        * Makefile.in (C_AND_OBJC_OBJS): Add disjoint-set.o,
        * Makefile.in (C_AND_OBJC_OBJS): Add disjoint-set.o,
        tree-alias-ecr.o, tree-alias-type.o, tree-alias-steen.o.
        tree-alias-ecr.o, tree-alias-type.o, tree-alias-steen.o.
        (tree-alias-steen.o): Add dependencies.
        (tree-alias-steen.o): Add dependencies.
        (tree-alias-ecr.o): Ditto.
        (tree-alias-ecr.o): Ditto.
        (tree-alias-type.o): Ditto.
        (tree-alias-type.o): Ditto.
        (disjoint-set.o): Ditto.
        (disjoint-set.o): Ditto.
2002-07-10  Daniel Berlin  
2002-07-10  Daniel Berlin  
            Diego Novillo  
            Diego Novillo  
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-ccp.o
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-ccp.o
        * flags.h (flag_tree_ssa_ccp): Declare.
        * flags.h (flag_tree_ssa_ccp): Declare.
        * fold-const.c (eval_subst): Make extern.
        * fold-const.c (eval_subst): Make extern.
        * toplev.c (flag_tree_ssa_ccp): Define.
        * toplev.c (flag_tree_ssa_ccp): Define.
        (f_options): Document -ftree-ssa-ccp.
        (f_options): Document -ftree-ssa-ccp.
        * tree-dump.c (dump_files): Add -fdump-tree-ccp.
        * tree-dump.c (dump_files): Add -fdump-tree-ccp.
        * tree-flow.h (tree_perform_ssapre): Move declaration ...
        * tree-flow.h (tree_perform_ssapre): Move declaration ...
        * tree-optimize.h: ... here.
        * tree-optimize.h: ... here.
        (tree_ssa_ccp): Declare.
        (tree_ssa_ccp): Declare.
        * tree-optimize.c (optimize_function_tree): Call tree_ssa_ccp.
        * tree-optimize.c (optimize_function_tree): Call tree_ssa_ccp.
        * tree-ssa-ccp.c: New file.
        * tree-ssa-ccp.c: New file.
        * tree.c (next_decl_uid): Remove static declaration.
        * tree.c (next_decl_uid): Remove static declaration.
        * tree.h (next_decl_uid): Declare.
        * tree.h (next_decl_uid): Declare.
        (tree_dump_index): Add TDI_ccp.
        (tree_dump_index): Add TDI_ccp.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-ccp.o.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-ccp.o.
        * doc/invoke.texi: Document -ftree-ssa-pre and -ftree-ssa-ccp.
        * doc/invoke.texi: Document -ftree-ssa-pre and -ftree-ssa-ccp.
2002-07-09  Daniel Berlin  
2002-07-09  Daniel Berlin  
        s/varrays of refs/ref_list of refs/g
        s/varrays of refs/ref_list of refs/g
        * tree-flow.h: Add ref_list structure.
        * tree-flow.h: Add ref_list structure.
        Add prototypes for ref_list functions.
        Add prototypes for ref_list functions.
        (FOR_EACH_REF, FOR_EACH_REF_REV): New macros to iterate through
        (FOR_EACH_REF, FOR_EACH_REF_REV): New macros to iterate through
        ref lists.
        ref lists.
        * tree-cfg.c, tree-ssa.c, tree-ssa-pre.c: Update all uses.
        * tree-cfg.c, tree-ssa.c, tree-ssa-pre.c: Update all uses.
        * tree-dfa.c (create_ref_list): New function.
        * tree-dfa.c (create_ref_list): New function.
        (delete_ref_list): Ditto.
        (delete_ref_list): Ditto.
        (empty_ref_list): Ditto.
        (empty_ref_list): Ditto.
        (add_ref_to_list_end): Ditto.
        (add_ref_to_list_end): Ditto.
        (add_ref_to_list_begin): Ditto.
        (add_ref_to_list_begin): Ditto.
        (remove_ref_from_list): Ditto.
        (remove_ref_from_list): Ditto.
2002-07-04  Diego Novillo  
2002-07-04  Diego Novillo  
        * tree-simple.c (is_simplifiable_builtin): Don't simplify target
        * tree-simple.c (is_simplifiable_builtin): Don't simplify target
        builtins.
        builtins.
2002-07-03  Diego Novillo  
2002-07-03  Diego Novillo  
        * c-simplify.c (simplify_decl_stmt): Unshare the
        * c-simplify.c (simplify_decl_stmt): Unshare the
        initializer nodes before simplification.
        initializer nodes before simplification.
2002-06-29  Aldy Hernandez  
2002-06-29  Aldy Hernandez  
            Diego Novillo  
            Diego Novillo  
        * c-simplify.c (simplify_call_expr): Do not bail on all builtins.
        * c-simplify.c (simplify_call_expr): Do not bail on all builtins.
        (is_simple_call_expr): Same.
        (is_simple_call_expr): Same.
        (simplify_addr_expr): New function.
        (simplify_addr_expr): New function.
        (simplify_expr): Call it.
        (simplify_expr): Call it.
        * tree-simple.c (is_simplifiable_builtin): New.
        * tree-simple.c (is_simplifiable_builtin): New.
        (is_simple_compound_lval): Do not bail on INDIRECT_REF.
        (is_simple_compound_lval): Do not bail on INDIRECT_REF.
        * tree-simple.h: New prototype for is_simplifiable_builtin.
        * tree-simple.h: New prototype for is_simplifiable_builtin.
2002-06-26  Daniel Berlin  
2002-06-26  Daniel Berlin  
        * tree-ssa.c (tree_build_ssa): Call free_dominance_info, not
        * tree-ssa.c (tree_build_ssa): Call free_dominance_info, not
        free, on idom.
        free, on idom.
        * tree-ssa-pre.c (compute_domchildren): Update to use new
        * tree-ssa-pre.c (compute_domchildren): Update to use new
        dominance_info structure, rather than idom array.
        dominance_info structure, rather than idom array.
        (tree_perform_ssapre): Don't forget to free the dominance info.
        (tree_perform_ssapre): Don't forget to free the dominance info.
        s/VARRAY_FREE/VARRAY_CLEAR/g now that VARRAY's are ggc allocated.
        s/VARRAY_FREE/VARRAY_CLEAR/g now that VARRAY's are ggc allocated.
2002-06-24  Diego Novillo  
2002-06-24  Diego Novillo  
        * tree-ssa.c (build_fud_chains): Use dominance_info instead of int *.
        * tree-ssa.c (build_fud_chains): Use dominance_info instead of int *.
        (search_fud_chains): Ditto.
        (search_fud_chains): Ditto.
        Call get_immediate_dominator.
        Call get_immediate_dominator.
        * tree-ssa-pre.c (a_dom_b): Call dominated_by_p.
        * tree-ssa-pre.c (a_dom_b): Call dominated_by_p.
        (pre_idom): Change type to dominance_info.  Update all uses.
        (pre_idom): Change type to dominance_info.  Update all uses.
        (pre_doms): Remove.  Update all uses.
        (pre_doms): Remove.  Update all uses.
2002-06-20  Jason Merrill  
2002-06-20  Jason Merrill  
        Simplify DECL_STMT, CONSTRUCTOR and COMPOUND_LITERAL_EXPR.
        Simplify DECL_STMT, CONSTRUCTOR and COMPOUND_LITERAL_EXPR.
        * tree-simple.c (is_simple_decl_stmt): New fn.
        * tree-simple.c (is_simple_decl_stmt): New fn.
        (is_simple_constructor, is_simple_constructor_elt): New fns.
        (is_simple_constructor, is_simple_constructor_elt): New fns.
        (is_simple_stmt, is_simple_unary_expr): Use them.
        (is_simple_stmt, is_simple_unary_expr): Use them.
        (is_simple_modify_expr): Accept an INIT_EXPR.
        (is_simple_modify_expr): Accept an INIT_EXPR.
        (is_simple_id): Don't allow a COMPOUND_LITERAL_EXPR.
        (is_simple_id): Don't allow a COMPOUND_LITERAL_EXPR.
        (is_simple_unary_expr): Here either.
        (is_simple_unary_expr): Here either.
        * c-simplify.c (simplify_decl_stmt, simplify_constructor): New fns.
        * c-simplify.c (simplify_decl_stmt, simplify_constructor): New fns.
        (simplify_compound_literal_expr): New fn.
        (simplify_compound_literal_expr): New fn.
        (simplify_stmt, simplify_expr): Use them.
        (simplify_stmt, simplify_expr): Use them.
        (get_initialized_tmp_var): Use an INIT_EXPR.
        (get_initialized_tmp_var): Use an INIT_EXPR.
        (simplify_modify_expr): Accept an INIT_EXPR.
        (simplify_modify_expr): Accept an INIT_EXPR.
        (simplify_for_stmt): Call simplify_decl_stmt.
        (simplify_for_stmt): Call simplify_decl_stmt.
        (get_name): Don't crash if the decl is anonymous.
        (get_name): Don't crash if the decl is anonymous.
        (tail_expression): New fn.
        (tail_expression): New fn.
        * tree-simple.h: Declare new fns.
        * tree-simple.h: Declare new fns.
        * c-pretty-print.c (dump_c_node) [INIT_EXPR]: Print like MODIFY_EXPR.
        * c-pretty-print.c (dump_c_node) [INIT_EXPR]: Print like MODIFY_EXPR.
        (dump_c_node, op_prio): Handle COMPOUND_LITERAL_EXPR.
        (dump_c_node, op_prio): Handle COMPOUND_LITERAL_EXPR.
        * c-simplify.c (simplify_expr_wfl): Only wrap pre and post stuff
        * c-simplify.c (simplify_expr_wfl): Only wrap pre and post stuff
        that came from our subexpression.
        that came from our subexpression.
        (simplify_stmt): Restore stmts_are_full_exprs_p.
        (simplify_stmt): Restore stmts_are_full_exprs_p.
        * c-simplify.c (simplify_expr_wfl): Bracket substatements with
        * c-simplify.c (simplify_expr_wfl): Bracket substatements with
        FILE_STMTs rather than wrapping them in EXPR_WITH_FILE_LOCATION.
        FILE_STMTs rather than wrapping them in EXPR_WITH_FILE_LOCATION.
        (simplify_stmt): Update lineno and input_filename from stmts.
        (simplify_stmt): Update lineno and input_filename from stmts.
        (simplify_expr et al): Don't copy lineno between stmts.  Don't pass
        (simplify_expr et al): Don't copy lineno between stmts.  Don't pass
        enclosing stmt down.
        enclosing stmt down.
        (update_line_number): Remove.
        (update_line_number): Remove.
        * c-simplify.c (simplify_expr_stmt): Don't check
        * c-simplify.c (simplify_expr_stmt): Don't check
        is_last_stmt_of_scope.
        is_last_stmt_of_scope.
        (simplify_stmt_expr): Check it here.  Set *expr_p to void_zero_node
        (simplify_stmt_expr): Check it here.  Set *expr_p to void_zero_node
        instead of NULL_TREE.
        instead of NULL_TREE.
        (expr_has_effect): No need to deal with NULL exprs now.
        (expr_has_effect): No need to deal with NULL exprs now.
        (simplify_expr_wfl): Likewise.
        (simplify_expr_wfl): Likewise.
2002-06-18  Diego Novillo  
2002-06-18  Diego Novillo  
        * c-simplify.c (strip_off_ending): Rename to remove_suffix.
        * c-simplify.c (strip_off_ending): Rename to remove_suffix.
        Update callers.
        Update callers.
        (is_last_stmt_of_scope): New function.
        (is_last_stmt_of_scope): New function.
        (simplify_expr_stmt): Call it.
        (simplify_expr_stmt): Call it.
        (stmt_has_effect): Ditto.
        (stmt_has_effect): Ditto.
        (c_simplify_function_tree): Update comment.
        (c_simplify_function_tree): Update comment.
2002-06-18  Jason Merrill  
2002-06-18  Jason Merrill  
        * c-simplify.c (maybe_fixup_loop_cond): New fn for C++ conditions.
        * c-simplify.c (maybe_fixup_loop_cond): New fn for C++ conditions.
        (simplify_for_stmt, simplify_while_stmt): Use it.
        (simplify_for_stmt, simplify_while_stmt): Use it.
        * c-pretty-print.c (dump_c_node) [COMPONENT_REF]: Print "->" if
        * c-pretty-print.c (dump_c_node) [COMPONENT_REF]: Print "->" if
        appropriate.
        appropriate.
2002-06-19  Jason Merrill  
2002-06-19  Jason Merrill  
        * c-simplify.c (simplify_stmt_expr): New fn.
        * c-simplify.c (simplify_stmt_expr): New fn.
        (simplify_expr): Call it.
        (simplify_expr): Call it.
        (stmt_expr_level): Remove.
        (stmt_expr_level): Remove.
        (stmt_has_effect, c_simplify_function_tree): Remove refs.
        (stmt_has_effect, c_simplify_function_tree): Remove refs.
        (expr_has_effect): Deal with null expression.
        (expr_has_effect): Deal with null expression.
        (simplify_expr_wfl): If the subexpression is simplified away, drop
        (simplify_expr_wfl): If the subexpression is simplified away, drop
        this one, too.  Don't wrap statements.
        this one, too.  Don't wrap statements.
        * tree-simple.c (is_simple_unary_expr): Don't allow a STMT_EXPR.
        * tree-simple.c (is_simple_unary_expr): Don't allow a STMT_EXPR.
        * tree-inline.c (copy_tree_r): Clear the aux field in the copies.
        * tree-inline.c (copy_tree_r): Clear the aux field in the copies.
2002-06-17  Frank Ch. Eigler  
2002-06-17  Frank Ch. Eigler  
        * c-pretty-print.c (dump_c_node): Print pointer-type
        * c-pretty-print.c (dump_c_node): Print pointer-type
        integer constants as raw numbers with a "B" (bytes) suffix.
        integer constants as raw numbers with a "B" (bytes) suffix.
2002-06-17  Jason Merrill  
2002-06-17  Jason Merrill  
        * c-simplify.c (simplify_stmt): Take a tree *.
        * c-simplify.c (simplify_stmt): Take a tree *.
        (various): Adjust.
        (various): Adjust.
2002-06-16  Daniel Berlin  
2002-06-16  Daniel Berlin  
        * c-simplify.c (get_name): New function.
        * c-simplify.c (get_name): New function.
        (get_initialized_tmp_var): Use it to try to get a prefix for
        (get_initialized_tmp_var): Use it to try to get a prefix for
        create_tmp_var from the value we are initializing to.
        create_tmp_var from the value we are initializing to.
        (simplify_cond_expr): Add prefix for create_tmp_var.
        (simplify_cond_expr): Add prefix for create_tmp_var.
        (create_tmp_var): Add prefix argument.
        (create_tmp_var): Add prefix argument.
        * tree-simple.h: Change create_tmp_var prototype to match.
        * tree-simple.h: Change create_tmp_var prototype to match.
        * tree-ssa-pre.c: Change create_tmp_var call.
        * tree-ssa-pre.c: Change create_tmp_var call.
2002-06-15  Diego Novillo  
2002-06-15  Diego Novillo  
        * Makefile.in (c-decl.o): Add dependency on langhooks.h
        * Makefile.in (c-decl.o): Add dependency on langhooks.h
        (c-simplify.o): Add dependency on flags.h, langhooks.h, toplev.h
        (c-simplify.o): Add dependency on flags.h, langhooks.h, toplev.h
        and rtl.h.
        and rtl.h.
        * c-decl.c: Include langhooks.h.
        * c-decl.c: Include langhooks.h.
        (c_expand_body): Simplify the function.  If it succeeds and
        (c_expand_body): Simplify the function.  If it succeeds and
        -ftree-ssa is enabled, call optimize_function_tree.
        -ftree-ssa is enabled, call optimize_function_tree.
        * c-simplify.c: Include flags.h, rtl.h and toplev.h.
        * c-simplify.c: Include flags.h, rtl.h and toplev.h.
        (simplify_expr_stmt): New function.
        (simplify_expr_stmt): New function.
        (simplify_stmt): Call it.
        (simplify_stmt): Call it.
        * tree-optimize.c: Don't include langhooks.h.
        * tree-optimize.c: Don't include langhooks.h.
        (optimize_function_tree): Don't call lang_hooks.simplify_function_tree.
        (optimize_function_tree): Don't call lang_hooks.simplify_function_tree.
        * c-decl.c (c_expand_body): Do not simplify nor optimize the
        * c-decl.c (c_expand_body): Do not simplify nor optimize the
        function if -fdisable-simple is given.
        function if -fdisable-simple is given.
        * c-simplify.c (simplify_expr): Use is_simple_addr_expr_arg when
        * c-simplify.c (simplify_expr): Use is_simple_addr_expr_arg when
        simplifying ADDR_EXPR nodes.
        simplifying ADDR_EXPR nodes.
        * flags.h (flag_disable_simple): Declare.
        * flags.h (flag_disable_simple): Declare.
        * toplev.c (flag_disable_simple): Define.
        * toplev.c (flag_disable_simple): Define.
        (f_options): Document -fdisable-simple.
        (f_options): Document -fdisable-simple.
        (process_options): Warn if -fdisable-simple is used with
        (process_options): Warn if -fdisable-simple is used with
        optimization enabled.
        optimization enabled.
        * tree-simple.c (is_simple_addr_expr_arg): New function.
        * tree-simple.c (is_simple_addr_expr_arg): New function.
        (is_simple_unary_expr): Call it.
        (is_simple_unary_expr): Call it.
        * tree-simple.h (is_simple_addr_expr_arg): Declare.
        * tree-simple.h (is_simple_addr_expr_arg): Declare.
        * doc/invoke.texi: Document -fdisable-simple.
        * doc/invoke.texi: Document -fdisable-simple.
        * c-pretty-print.c (dump_c_node): Handle DECL_STMT nodes inside
        * c-pretty-print.c (dump_c_node): Handle DECL_STMT nodes inside
        FOR_INIT_STMT.
        FOR_INIT_STMT.
        * c-simplify.c (c_simplify_function_tree): Don't do anything if the
        * c-simplify.c (c_simplify_function_tree): Don't do anything if the
        program had errors.
        program had errors.
        (simplify_stmt): Skip DECL_STMTs.
        (simplify_stmt): Skip DECL_STMTs.
        (simplify_for_stmt): Handle DECL_STMT nodes inside FOR_INIT_STMT.
        (simplify_for_stmt): Handle DECL_STMT nodes inside FOR_INIT_STMT.
        (simplify_save_expr): New function.
        (simplify_save_expr): New function.
        (simplify_expr): Call it.
        (simplify_expr): Call it.
        (tree_last_decl): Handle cases where DECL_STMTs are found before
        (tree_last_decl): Handle cases where DECL_STMTs are found before
        the body of the function.
        the body of the function.
        * tree-simple.c (is_simple_stmt): Handle DECL_STMT nodes inside
        * tree-simple.c (is_simple_stmt): Handle DECL_STMT nodes inside
        FOR_INIT_STMT.
        FOR_INIT_STMT.
        (is_simple_compound_lval): Handle nodes wrapped in NON_LVALUE_EXPR.
        (is_simple_compound_lval): Handle nodes wrapped in NON_LVALUE_EXPR.
2002-06-14  Frank Ch. Eigler  
2002-06-14  Frank Ch. Eigler  
        * c-pretty-print.c (dump_c_node): Print more type qualifiers,
        * c-pretty-print.c (dump_c_node): Print more type qualifiers,
        especially for pointers.
        especially for pointers.
2002-06-11  Diego Novillo  
2002-06-11  Diego Novillo  
        * c-simplify.c: Remove folding markers.
        * c-simplify.c: Remove folding markers.
        (insert_before_first): Remove unused function.
        (insert_before_first): Remove unused function.
        * tree-cfg.c: Remove folding markers.
        * tree-cfg.c: Remove folding markers.
        * tree-dfa.c: Ditto.
        * tree-dfa.c: Ditto.
        * tree-flow.h: Ditto.
        * tree-flow.h: Ditto.
        * tree-optimize.c: Ditto.
        * tree-optimize.c: Ditto.
        * tree-optimize.h: Ditto.
        * tree-optimize.h: Ditto.
        * tree-simple.c: Ditto.
        * tree-simple.c: Ditto.
        * tree-ssa.c: Ditto.
        * tree-ssa.c: Ditto.
2002-06-11  Jason Merrill  
2002-06-11  Jason Merrill  
        * c-simplify.c (add_tree): Don't deep-copy expressions.
        * c-simplify.c (add_tree): Don't deep-copy expressions.
        (simplify_for_stmt): Only deep-copy pre_cond_s the first time.
        (simplify_for_stmt): Only deep-copy pre_cond_s the first time.
        Don't deep copy expr_chain.
        Don't deep copy expr_chain.
2002-06-10  Diego Novillo  
2002-06-10  Diego Novillo  
        * tree-cfg.c (remove_bb_ann): Don't call VARRAY_FREE.
        * tree-cfg.c (remove_bb_ann): Don't call VARRAY_FREE.
        * tree-dfa.c (create_ref): Use sizeof (ref) instead of
        * tree-dfa.c (create_ref): Use sizeof (ref) instead of
        refs->element_size.
        refs->element_size.
        * tree.h (struct tree_common): Skip field 'aux' from GC type
        * tree.h (struct tree_common): Skip field 'aux' from GC type
        information.
        information.
        * tree-optimize.c (optimize_function_tree): Don't call
        * tree-optimize.c (optimize_function_tree): Don't call
        VARRAY_REF.
        VARRAY_REF.
        * tree-ssa.c (insert_phi_terms): Ditto.
        * tree-ssa.c (insert_phi_terms): Ditto.
        (delete_refs): Ditto.
        (delete_refs): Ditto.
        * c-simplify.c (simplify_array_ref): Ditto.
        * c-simplify.c (simplify_array_ref): Ditto.
        * simple-break-elim.c: Disable whole file.
        * simple-break-elim.c: Disable whole file.
        * simple-goto-elim.c: Disable whole file.
        * simple-goto-elim.c: Disable whole file.
2002-06-10  Jason Merrill  
2002-06-10  Jason Merrill  
        * c-simplify.c (simplify_switch_stmt): Let simplify_expr handle
        * c-simplify.c (simplify_switch_stmt): Let simplify_expr handle
        post-effects.  Reorder.
        post-effects.  Reorder.
        (simplify_if_stmt): Likewise.  Don't build redundant comparison.
        (simplify_if_stmt): Likewise.  Don't build redundant comparison.
        (simplify_do_stmt, simplify_while_stmt): Likewise.
        (simplify_do_stmt, simplify_while_stmt): Likewise.
        (simplify_for_stmt): Likewise.  Remove POST_P parm.
        (simplify_for_stmt): Likewise.  Remove POST_P parm.
        (simplify_stmt): Adjust.
        (simplify_stmt): Adjust.
        (insert_before_first): #if 0, no longer used.
        (insert_before_first): #if 0, no longer used.
        * c-pretty-print.c (dump_c_node): Print FIX_TRUNC_EXPR, FLOAT_EXPR
        * c-pretty-print.c (dump_c_node): Print FIX_TRUNC_EXPR, FLOAT_EXPR
        et al as casts.  Add parens as needed.
        et al as casts.  Add parens as needed.
        * tree-simple.c (is_union_based_ref): New fn.
        * tree-simple.c (is_union_based_ref): New fn.
        (is_simple_min_lval): Use it.  Rename from is_simple_arraybase.
        (is_simple_min_lval): Use it.  Rename from is_simple_arraybase.
        (is_simple_arrayref): Adjust.  Use loop instead of recursion.
        (is_simple_arrayref): Adjust.  Use loop instead of recursion.
        (is_simple_compref): Likewise.
        (is_simple_compref): Likewise.
        (is_simple_compref_lhs): Remove.
        (is_simple_compref_lhs): Remove.
        * tree-simple.h: Adjust.
        * tree-simple.h: Adjust.
        * c-simplify.c (simplify_array_ref): Adjust.
        * c-simplify.c (simplify_array_ref): Adjust.
        (simplify_component_ref): Adjust.
        (simplify_component_ref): Adjust.
        * c-simplify.c (simplify_expr_common): Tweak ordering.
        * c-simplify.c (simplify_expr_common): Tweak ordering.
        (get_initialized_tmp_var): Let simplify_expr handle post-effects.
        (get_initialized_tmp_var): Let simplify_expr handle post-effects.
        * tree-simple.c (is_simple_stmt): Accept an rhs for a return expr.
        * tree-simple.c (is_simple_stmt): Accept an rhs for a return expr.
        * c-simplify.c (simplify_boolean_expr): Avoid redundant tests.
        * c-simplify.c (simplify_boolean_expr): Avoid redundant tests.
        Give the temp the appropriate type for a boolean value, and
        Give the temp the appropriate type for a boolean value, and
        reconvert at the end.
        reconvert at the end.
        * c-simplify.c (simplify_self_mod_expr): Don't duplicate side-effects.
        * c-simplify.c (simplify_self_mod_expr): Don't duplicate side-effects.
        * c-simplify.c (simplify_return_stmt): Accept a SIMPLE rhs.
        * c-simplify.c (simplify_return_stmt): Accept a SIMPLE rhs.
        Just hand off to simplify_expr.
        Just hand off to simplify_expr.
        * c-simplify.c (get_initialized_tmp_var): New fn.
        * c-simplify.c (get_initialized_tmp_var): New fn.
        (simplify_expr_common): Use it.  Handle post-effects internally if
        (simplify_expr_common): Use it.  Handle post-effects internally if
        POST_P is NULL.
        POST_P is NULL.
        (is_simple_tmp_var): Rename from simple_tmp_var_p.
        (is_simple_tmp_var): Rename from simple_tmp_var_p.
        * tree-simple.h: Adjust.
        * tree-simple.h: Adjust.
2002-06-09  Diego Novillo  
2002-06-09  Diego Novillo  
        * c-simplify.c (simplify_return_stmt): Update folding markers.
        * c-simplify.c (simplify_return_stmt): Update folding markers.
        (build_addr_expr): Ditto.
        (build_addr_expr): Ditto.
        * langhooks.h (struct langhooks): Document simplify_function_tree
        * langhooks.h (struct langhooks): Document simplify_function_tree
        hook.
        hook.
2002-06-09  Jason Merrill  
2002-06-09  Jason Merrill  
        * c-simplify.c (simplify_expr_common): Handle creating both lvalue
        * c-simplify.c (simplify_expr_common): Handle creating both lvalue
        and rvalue temps.  Add new parameter to specify which.
        and rvalue temps.  Add new parameter to specify which.
        (simplify_expr): Now just a wrapper.
        (simplify_expr): Now just a wrapper.
        (simplify_lvalue_expr): Likewise.
        (simplify_lvalue_expr): Likewise.
        (simplify_expr_either): New wrapper.
        (simplify_expr_either): New wrapper.
        (simplify_component_ref): Use it instead of simplify_lvalue_expr.
        (simplify_component_ref): Use it instead of simplify_lvalue_expr.
        * c-pretty-print.c (debug_c_tree): Add a trailing newline.
        * c-pretty-print.c (debug_c_tree): Add a trailing newline.
        (debug_c_node): Likewise.
        (debug_c_node): Likewise.
        * gdbinit.in (pct): New macro, calls debug_c_tree.
        * gdbinit.in (pct): New macro, calls debug_c_tree.
2002-06-08  Jason Merrill  
2002-06-08  Jason Merrill  
        * tree-simple.c (is_simple_unary_expr): Only allow the address of
        * tree-simple.c (is_simple_unary_expr): Only allow the address of
        a varname.
        a varname.
        (is_simple_id): Allow STRING_CST.
        (is_simple_id): Allow STRING_CST.
        * c-simplify.c (simplify_expr_common): Split out from simplify_expr.
        * c-simplify.c (simplify_expr_common): Split out from simplify_expr.
        Do simplify ADDR_EXPR.
        Do simplify ADDR_EXPR.
        (simplify_lvalue_expr): Use it and build_addr_expr.  Take
        (simplify_lvalue_expr): Use it and build_addr_expr.  Take
        simple_test_f.
        simple_test_f.
        (simplify_modify_expr): Adjust.
        (simplify_modify_expr): Adjust.
        (build_addr_expr): New fn.
        (build_addr_expr): New fn.
        (simplify_array_ref): Use simplify_lvalue_expr.
        (simplify_array_ref): Use simplify_lvalue_expr.
        (simplify_component_ref): Likewise.
        (simplify_component_ref): Likewise.
        * tree-simple.c (is_simple_rhs): Remove condexpr rule.
        * tree-simple.c (is_simple_rhs): Remove condexpr rule.
        (is_simple_compref_lhs): Remove &ID.idlist rule.
        (is_simple_compref_lhs): Remove &ID.idlist rule.
        (is_simple_relop): New fn.
        (is_simple_relop): New fn.
        (is_simple_binary_expr, is_simple_condexpr): Use it.
        (is_simple_binary_expr, is_simple_condexpr): Use it.
        * tree-simple.h: Declare it.
        * tree-simple.h: Declare it.
        * c-simplify.c (create_tmp_var): Refuse to create an array temp.
        * c-simplify.c (create_tmp_var): Refuse to create an array temp.
        (simple_tmp_var_p): New fn.
        (simple_tmp_var_p): New fn.
        (simplify_lvalue_expr): Use it; make sure we don't return a temp.
        (simplify_lvalue_expr): Use it; make sure we don't return a temp.
        * tree-simple.h: Declare it.
        * tree-simple.h: Declare it.
        * c-pretty-print.c (dump_c_node) [ARRAY_REF]: Wrap array in parens
        * c-pretty-print.c (dump_c_node) [ARRAY_REF]: Wrap array in parens
        as needed.
        as needed.
        [COMPONENT_REF]: Likewise.
        [COMPONENT_REF]: Likewise.
        [POINTER_TYPE]: Fix pointer-to-function handling.
        [POINTER_TYPE]: Fix pointer-to-function handling.
        [ARRAY_TYPE]: Don't try to print an unknown dimension.
        [ARRAY_TYPE]: Don't try to print an unknown dimension.
        * tree-simple.c (is_simple_arraybase): New function.
        * tree-simple.c (is_simple_arraybase): New function.
        (is_simple_arrayref): Use it to check the array base again.
        (is_simple_arrayref): Use it to check the array base again.
        * tree-simple.h: Add declaration.
        * tree-simple.h: Add declaration.
        * c-simplify.c (simplify_array_ref): Do simplify the base.
        * c-simplify.c (simplify_array_ref): Do simplify the base.
        * expr.c (expand_expr): First make sure the type has a size.
        * expr.c (expand_expr): First make sure the type has a size.
2002-06-07  Jason Merrill  
2002-06-07  Jason Merrill  
        * cppexp.c (num_equality_op): Use a temporary variable to work
        * cppexp.c (num_equality_op): Use a temporary variable to work
        around gcc 3.0.4 bug.
        around gcc 3.0.4 bug.
2002-06-05  Diego Novillo  
2002-06-05  Diego Novillo  
        * Makefile.in (BOOT_CFLAGS): Remove -ftree-ssa.
        * Makefile.in (BOOT_CFLAGS): Remove -ftree-ssa.
        * c-decl.c (c_expand_body): Call optimize_function_tree if tree SSA
        * c-decl.c (c_expand_body): Call optimize_function_tree if tree SSA
        is enabled.
        is enabled.
        * c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define.
        * c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define.
        * c-simplify.c (simplify_tree): Rename to c_simplify_function_tree.
        * c-simplify.c (simplify_tree): Rename to c_simplify_function_tree.
        Update all callers.
        Update all callers.
        Dump function body before and after simplification if
        Dump function body before and after simplification if
        -fdump-tree-simple is used.
        -fdump-tree-simple is used.
        (simplify_expr): Document FIXME for simplification of BIT_FIELD_REF
        (simplify_expr): Document FIXME for simplification of BIT_FIELD_REF
        nodes.
        nodes.
        * c-tree.h (simplify_tree): Rename to c_simplify_function_tree.
        * c-tree.h (simplify_tree): Rename to c_simplify_function_tree.
        * langhooks-def.h (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define
        * langhooks-def.h (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define
        (LANGHOOKS_INITIALIZER): Add LANG_HOOKS_SIMPLIFY_FUNCTION_TREE.
        (LANGHOOKS_INITIALIZER): Add LANG_HOOKS_SIMPLIFY_FUNCTION_TREE.
        (lhd_simplify_function_tree): Declare.
        (lhd_simplify_function_tree): Declare.
        * langhooks.c (lhd_simplify_function_tree): New function.
        * langhooks.c (lhd_simplify_function_tree): New function.
        * langhooks.h (lang_hooks): Add simplify_function_tree function
        * langhooks.h (lang_hooks): Add simplify_function_tree function
        pointer.
        pointer.
        * toplev.c (parse_options_and_default_flags): Set flag_tree_ssa to
        * toplev.c (parse_options_and_default_flags): Set flag_tree_ssa to
        1 at optimization levels >= 1.
        1 at optimization levels >= 1.
        Revert to default warning when -Wuninitialized is used without -O.
        Revert to default warning when -Wuninitialized is used without -O.
        * tree-cfg.c (tree_find_basic_blocks): Rename argument 't' to
        * tree-cfg.c (tree_find_basic_blocks): Rename argument 't' to
        'fnbody'.
        'fnbody'.
        * tree-optimize.c: Include langhooks.h.
        * tree-optimize.c: Include langhooks.h.
        (optimize_tree): Rename to optimize_function_tree.  Update all
        (optimize_tree): Rename to optimize_function_tree.  Update all
        users.
        users.
        Rename argument 't' to 'fndecl'.
        Rename argument 't' to 'fndecl'.
        Call simplify langhook before building SSA.
        Call simplify langhook before building SSA.
        (build_tree_ssa): Rename argument 't' to 'fndecl'.
        (build_tree_ssa): Rename argument 't' to 'fndecl'.
        Adjust call to tree_find_basic_blocks to pass body of the function.
        Adjust call to tree_find_basic_blocks to pass body of the function.
        * tree-optimize.h (optimize_tree): Rename to
        * tree-optimize.h (optimize_tree): Rename to
        optimize_function_tree.
        optimize_function_tree.
        * tree-simple.c (is_simple_unary_expr): Document FIXME on
        * tree-simple.c (is_simple_unary_expr): Document FIXME on
        BIT_FIELD_REF nodes.
        BIT_FIELD_REF nodes.
        * tree-ssa.c: Add whitespace.
        * tree-ssa.c: Add whitespace.
        * testsuite/lib/c-torture.exp: Remove -ftree-ssa flag.
        * testsuite/lib/c-torture.exp: Remove -ftree-ssa flag.
2002-06-03  Daniel Berlin  
2002-06-03  Daniel Berlin  
        * tree-cfg.c (insert_before_*):  For insertion into FOR_INIT's, if
        * tree-cfg.c (insert_before_*):  For insertion into FOR_INIT's, if
        we have an expression statement, transform into a compound
        we have an expression statement, transform into a compound
        expression.
        expression.
        Pick the right place to insert a statement by iterating until we
        Pick the right place to insert a statement by iterating until we
        have a first_exec_stmt (first_non_decl_stmt) that is really the
        have a first_exec_stmt (first_non_decl_stmt) that is really the
        first executable non decl statement.
        first executable non decl statement.
        (insert_after_*): Ditto.
        (insert_after_*): Ditto.
2002-06-03  Daniel Berlin  
2002-06-03  Daniel Berlin  
        * tree-ssa-pre.c: Update BB stuff to new basic block structure.
        * tree-ssa-pre.c: Update BB stuff to new basic block structure.
        Add some comments throughout (more coming, particularly describing
        Add some comments throughout (more coming, particularly describing
        the algorithm, rather than the implementation).
        the algorithm, rather than the implementation).
        (free_expr_info): Free refs as well.
        (free_expr_info): Free refs as well.
        (defs_y_dom_x): Handle unary expressions as well.
        (defs_y_dom_x): Handle unary expressions as well.
        (insert_euse_in_preorder_dt_order_1): Use block of ref, not block
        (insert_euse_in_preorder_dt_order_1): Use block of ref, not block
        of statement.
        of statement.
        Don't insert exit blocks if we hit them before hitting an
        Don't insert exit blocks if we hit them before hitting an
        occurrence (it's pointless).
        occurrence (it's pointless).
        (rename_2): Return set of phi operands we touched, don't forget to
        (rename_2): Return set of phi operands we touched, don't forget to
        free VARRAY's we allocated.
        free VARRAY's we allocated.
        (rename_1): Correct downsafety computation. Now get exact same
        (rename_1): Correct downsafety computation. Now get exact same
        results as Open64.
        results as Open64.
        Correct setting of has_real_use.
        Correct setting of has_real_use.
        (finalize_1): Fix up insertion.
        (finalize_1): Fix up insertion.
        (code_motion): Fix up insertion.
        (code_motion): Fix up insertion.
        * tree-dfa.c (dump_varref):  Improve dumping of expression
        * tree-dfa.c (dump_varref):  Improve dumping of expression
        references.
        references.
2002-06-03  Diego Novillo  
2002-06-03  Diego Novillo  
        * tree-cfg.c (delete_bb): Rename to tree_delete_bb.  Update callers.
        * tree-cfg.c (delete_bb): Rename to tree_delete_bb.  Update callers.
        (tree_find_basic_blocks): Initializer last_basic_block.
        (tree_find_basic_blocks): Initializer last_basic_block.
        (create_bb): Update last_basic_block after creating a new block.
        (create_bb): Update last_basic_block after creating a new block.
        (tree_cleanup_cfg): Delete unreachable blocks by traversing the
        (tree_cleanup_cfg): Delete unreachable blocks by traversing the
        linked list, not the array.  Update comments.
        linked list, not the array.  Update comments.
        (delete_bb): Update comments.
        (delete_bb): Update comments.
        (tree_dump_cfg): Also show last_basic_block.
        (tree_dump_cfg): Also show last_basic_block.
        * tree-ssa.c (tree_build_ssa): Use last_basic_block instead of
        * tree-ssa.c (tree_build_ssa): Use last_basic_block instead of
        n_basic_blocks to allocate dominator arrays.
        n_basic_blocks to allocate dominator arrays.
        (insert_phi_terms): Ditto.
        (insert_phi_terms): Ditto.
        (search_fud_chains): User FOR_EACH_BB to look for dominator
        (search_fud_chains): User FOR_EACH_BB to look for dominator
        children.
        children.
2002-05-29  Diego Novillo  
2002-05-29  Diego Novillo  
        * tree-cfg.c (tree_find_basic_blocks): Set next_bb and prev_bb for
        * tree-cfg.c (tree_find_basic_blocks): Set next_bb and prev_bb for
        ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        (create_bb): Set flag BB_NEW for every newly created block.
        (create_bb): Set flag BB_NEW for every newly created block.
        Call link_block to add the new block to the linked list.
        Call link_block to add the new block to the linked list.
        (tree_split_bb): Traverse basic blocks using FOR_EACH_BB.
        (tree_split_bb): Traverse basic blocks using FOR_EACH_BB.
        (make_goto_stmt_edges): Ditto.
        (make_goto_stmt_edges): Ditto.
        (remove_unreachable_blocks): Add reminder comment to stop
        (remove_unreachable_blocks): Add reminder comment to stop
        compacting the basic block array every time a block is deleted.
        compacting the basic block array every time a block is deleted.
        (delete_cfg): Traverse basic blocks using FOR_EACH_BB.
        (delete_cfg): Traverse basic blocks using FOR_EACH_BB.
        (tree_dump_bb): Ditto.
        (tree_dump_bb): Ditto.
        (tree_dump_cfg): Ditto.
        (tree_dump_cfg): Ditto.
        (tree_cfg2dot): Ditto.
        (tree_cfg2dot): Ditto.
        * tree-dfa.c (tree_find_varrefs): Ditto.
        * tree-dfa.c (tree_find_varrefs): Ditto.
        (create_tree_ann): Ditto.
        (create_tree_ann): Ditto.
        (get_fcalls): Ditto.
        (get_fcalls): Ditto.
        (find_declaration): Ditto.
        (find_declaration): Ditto.
        * tree-ssa.c (tree_build_ssa): Ditto.
        * tree-ssa.c (tree_build_ssa): Ditto.
2002-05-28  Diego Novillo  
2002-05-28  Diego Novillo  
        * Makefile.in: Add -ftree-ssa to BOOT_CFLAGS.
        * Makefile.in: Add -ftree-ssa to BOOT_CFLAGS.
2002-05-27  Diego Novillo  
2002-05-27  Diego Novillo  
        * c-decl.c (c_expand_body): Close dump file before simplifying the
        * c-decl.c (c_expand_body): Close dump file before simplifying the
        function.
        function.
        * c-pretty-print.c (dump_c_node): Handle COMPLEX_CST,
        * c-pretty-print.c (dump_c_node): Handle COMPLEX_CST,
        BIT_FIELD_REF, COMPLEX_EXPR, CONJ_EXPR, REALPART_EXPR,
        BIT_FIELD_REF, COMPLEX_EXPR, CONJ_EXPR, REALPART_EXPR,
        IMAGPART_EXPR and VA_ARG_EXPR nodes.
        IMAGPART_EXPR and VA_ARG_EXPR nodes.
        Display all type casts, not just pointer casts.
        Display all type casts, not just pointer casts.
        (op_prio): Handle LROTATE_EXPR, RROTATE_EXPR, REALPART_EXPR and
        (op_prio): Handle LROTATE_EXPR, RROTATE_EXPR, REALPART_EXPR and
        IMAGPART_EXPR.
        IMAGPART_EXPR.
        * c-simplify.c: Include "tree-inline.h"
        * c-simplify.c: Include "tree-inline.h"
        (dump_file): New local variable.
        (dump_file): New local variable.
        (dump_flags): New local variable.
        (dump_flags): New local variable.
        (stmt_expr_level): New local variable.
        (stmt_expr_level): New local variable.
        (simplify_tree): Open and close dump file if
        (simplify_tree): Open and close dump file if
        -fdump-tree-simple-details is given.
        -fdump-tree-simple-details is given.
        Initialize stmt_expr_level.
        Initialize stmt_expr_level.
        (simplify_stmt): Dump statement before and after simplification if
        (simplify_stmt): Dump statement before and after simplification if
        -fdump-tree-simple-detail is given.
        -fdump-tree-simple-detail is given.
        Unshare the expression of an EXPR_STMT before simplifying it.
        Unshare the expression of an EXPR_STMT before simplifying it.
        Call simplify_return_stmt to handle RETURN_STMT nodes.
        Call simplify_return_stmt to handle RETURN_STMT nodes.
        Do not simplify DECL_STMT nodes.
        Do not simplify DECL_STMT nodes.
        Call stmt_has_effect before re-chaining side effects.
        Call stmt_has_effect before re-chaining side effects.
        (simplify_for_stmt): Do not return the simplified statement.
        (simplify_for_stmt): Do not return the simplified statement.
        Update all callers.
        Update all callers.
        Simplify FOR_BODY after the headers.
        Simplify FOR_BODY after the headers.
        Unshare loop header expressions before simplification.
        Unshare loop header expressions before simplification.
        (simplify_while_stmt): Do not return the simplified statement.
        (simplify_while_stmt): Do not return the simplified statement.
        Update all callers.
        Update all callers.
        Simplify WHILE_BODY after the headers.
        Simplify WHILE_BODY after the headers.
        Unshare the loop header expression before simplification.
        Unshare the loop header expression before simplification.
        (simplify_do_stmt): Do not return the simplified statement.  Update
        (simplify_do_stmt): Do not return the simplified statement.  Update
        all callers.
        all callers.
        Unshare the loop header expression before simplification.
        Unshare the loop header expression before simplification.
        (simplify_if_stmt): Do not return the simplified statement.  Update
        (simplify_if_stmt): Do not return the simplified statement.  Update
        all callers.
        all callers.
        Simplify the condition expression before the clauses.
        Simplify the condition expression before the clauses.
        Unshare the condition expression before simplification.
        Unshare the condition expression before simplification.
        (simplify_switch_stmt): Do not return the simplified statement.
        (simplify_switch_stmt): Do not return the simplified statement.
        Update all callers.
        Update all callers.
        Simplify the switch expression before the body.
        Simplify the switch expression before the body.
        Unshare the switch expression before simplification.
        Unshare the switch expression before simplification.
        (simplify_decl_stmt): Remove.
        (simplify_decl_stmt): Remove.
        (simplify_expr): Remove argument 'needs_lvalue'.
        (simplify_expr): Remove argument 'needs_lvalue'.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Replace first argument 'expr' with a pointer to the
        Replace first argument 'expr' with a pointer to the
        expression 'expr_p'.
        expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Update all callers and uses.
        Update all callers and uses.
        Handle TRUTH_NOT_EXPR nodes.  Simplify SAVE_EXPR nodes into a
        Handle TRUTH_NOT_EXPR nodes.  Simplify SAVE_EXPR nodes into a
        SIMPLE id and remove the SAVE_EXPR node.
        SIMPLE id and remove the SAVE_EXPR node.
        Do not simplify BIT_FIELD_REF nodes.
        Do not simplify BIT_FIELD_REF nodes.
        Remove code that tried to create new lvalues.
        Remove code that tried to create new lvalues.
        (simplify_array_ref): Replace first argument 'expr' with a pointer
        (simplify_array_ref): Replace first argument 'expr' with a pointer
        to the expression 'expr_p'.
        to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers and uses.
        Update all callers and uses.
        (simplify_self_mod_expr): Replace first argument 'expr' with a
        (simplify_self_mod_expr): Replace first argument 'expr' with a
        pointer to the expression 'expr_p'.
        pointer to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers and uses.
        Update all callers and uses.
        Call simplify_lvalue_expr to simplify a copy of the LHS into an
        Call simplify_lvalue_expr to simplify a copy of the LHS into an
        lvalue for the new assignment.
        lvalue for the new assignment.
        Simplify the new binary expression.
        Simplify the new binary expression.
        (simplify_component_ref): Replace first argument 'expr' with a
        (simplify_component_ref): Replace first argument 'expr' with a
        pointer to the expression 'expr_p'.
        pointer to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers and uses.
        Update all callers and uses.
        (simplify_call_expr): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_cond_expr): Ditto.
        Build a replacement IF_STMT and call simplify_if_stmt() to process
        Build a replacement IF_STMT and call simplify_if_stmt() to process
        it.  Set the line number of the new statement from the statement
        it.  Set the line number of the new statement from the statement
        containing the original expression.
        containing the original expression.
        (simplify_modify_expr): Replace first argument 'expr' with a
        (simplify_modify_expr): Replace first argument 'expr' with a
        pointer to the expression 'expr_p'.
        pointer to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers.
        Update all callers.
        Call simplify_lvalue_expr to simplify the LHS of the assignment.
        Call simplify_lvalue_expr to simplify the LHS of the assignment.
        (simplify_boolean_expr): Replace first argument 'expr' with a
        (simplify_boolean_expr): Replace first argument 'expr' with a
        pointer to the expression 'expr_p'.
        pointer to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers.
        Update all callers.
        Build a new IF_STMT and simplify it all at once by calling
        Build a new IF_STMT and simplify it all at once by calling
        simplify_if_stmt.
        simplify_if_stmt.
        (simplify_compound_expr): Replace first argument 'expr' with a
        (simplify_compound_expr): Replace first argument 'expr' with a
        pointer to the expression 'expr_p'.
        pointer to the expression 'expr_p'.
        Do not return the simplified expression.
        Do not return the simplified expression.
        Add argument 'stmt'.
        Add argument 'stmt'.
        Update all callers.
        Update all callers.
        (simplify_expr_wfl): Ditto.
        (simplify_expr_wfl): Ditto.
        (simplify_lvalue_expr): New function.
        (simplify_lvalue_expr): New function.
        (add_tree): Create a copy of each expression before adding it to
        (add_tree): Create a copy of each expression before adding it to
        the list.
        the list.
        (deep_copy_node): Call copy_tree_r to copy expression nodes.
        (deep_copy_node): Call copy_tree_r to copy expression nodes.
        (stmt_has_effect): Return nonzero if the statement may be the last
        (stmt_has_effect): Return nonzero if the statement may be the last
        statement of a statement expression body.
        statement of a statement expression body.
        (mostly_copy_tree_r): New function.
        (mostly_copy_tree_r): New function.
        * tree-dump.c (dump_options): Add 'details'.
        * tree-dump.c (dump_options): Add 'details'.
        * tree-simple.c: Update documentation about ADDRESSOF expressions.
        * tree-simple.c: Update documentation about ADDRESSOF expressions.
        (is_simple_stmt): Test for SIMPLE values when checking return
        (is_simple_stmt): Test for SIMPLE values when checking return
        statements.
        statements.
        Accept all DECL_STMT nodes.
        Accept all DECL_STMT nodes.
        (is_simple_compstmt): Return nonzero if T is NULL.  Do not test
        (is_simple_compstmt): Return nonzero if T is NULL.  Do not test
        DECL_STMT nodes
        DECL_STMT nodes
        (is_simple_expr): Return nonzero if T is NULL.
        (is_simple_expr): Return nonzero if T is NULL.
        (is_simple_rhs): Ditto.
        (is_simple_rhs): Ditto.
        (is_simple_modify_expr): Ditto.
        (is_simple_modify_expr): Ditto.
        (is_simple_modify_expr_lhs): Ditto.
        (is_simple_modify_expr_lhs): Ditto.
        (is_simple_binary_expr): Ditto.
        (is_simple_binary_expr): Ditto.
        (is_simple_cond_expr): Ditto.
        (is_simple_cond_expr): Ditto.
        (is_simple_unary_expr): Call STRIP_NOPS before testing T.
        (is_simple_unary_expr): Call STRIP_NOPS before testing T.
        Always accept ADDR_EXPR nodes.
        Always accept ADDR_EXPR nodes.
        Always accept BIT_FIELD_REF nodes.
        Always accept BIT_FIELD_REF nodes.
        (is_simple_call_expr): Return nonzero if T is NULL.
        (is_simple_call_expr): Return nonzero if T is NULL.
        (is_simple_const): Ditto.
        (is_simple_const): Ditto.
        (is_simple_val): Ditto.
        (is_simple_val): Ditto.
        (is_simple_compref): Ditto.
        (is_simple_compref): Ditto.
        (is_simple_compref_lhs): Ditto.
        (is_simple_compref_lhs): Ditto.
        (is_simple_cast): Ditto.
        (is_simple_cast): Ditto.
        (is_simple_cast_op): Ditto.
        (is_simple_cast_op): Ditto.
        (is_simple_id): Return nonzero if T is NULL.  Allow identifiers
        (is_simple_id): Return nonzero if T is NULL.  Allow identifiers
        wrapped inside NON_LVALUE_EXPR and EXPR_WITH_FILE_LOCATION nodes.
        wrapped inside NON_LVALUE_EXPR and EXPR_WITH_FILE_LOCATION nodes.
        Allow real and imaginary parts of a complex variable.
        Allow real and imaginary parts of a complex variable.
        Allow compound literals.
        Allow compound literals.
        (is_simple_arrayref): Allow arrays of complex types.
        (is_simple_arrayref): Allow arrays of complex types.
        * tree.h (TDF_DETAILS): Define.
        * tree.h (TDF_DETAILS): Define.
        * cp/pt.c (tsubst_template_parms): Check that 'parms' is non-NULL
        * cp/pt.c (tsubst_template_parms): Check that 'parms' is non-NULL
        before calling TMPL_PARMS_DEPTH.
        before calling TMPL_PARMS_DEPTH.
        * doc/invoke.texi: Document -fdump-tree-simple-details.
        * doc/invoke.texi: Document -fdump-tree-simple-details.
2002-05-10  Daniel Berlin  
2002-05-10  Daniel Berlin  
        * c-pretty-print.c (dump_c_node): Print "" for
        * c-pretty-print.c (dump_c_node): Print "" for
        types, variables, etc that have no name, rather than printing
        types, variables, etc that have no name, rather than printing
        nothing.
        nothing.
        Handle PMF's properly.
        Handle PMF's properly.
        Print out structure initializers in a somewhat sensible way.
        Print out structure initializers in a somewhat sensible way.
        Print SAVE_EXPR () around SAVE_EXPRs.
        Print SAVE_EXPR () around SAVE_EXPRs.
        (print_call_name): Handle EXPR_WITH_FILE_LOCATION.
        (print_call_name): Handle EXPR_WITH_FILE_LOCATION.
2002-05-09  Daniel Berlin  
2002-05-09  Daniel Berlin  
        * tree-dfa.c (dump_varref): Tree inlining generates variables with
        * tree-dfa.c (dump_varref): Tree inlining generates variables with
        no name. Don't crash on dumping varref's of them.
        no name. Don't crash on dumping varref's of them.
        * tree-inline.c (expand_call_inline): Generate a proper STMT_EXPR
        * tree-inline.c (expand_call_inline): Generate a proper STMT_EXPR
        (it was missing COMPOUND_STMT).
        (it was missing COMPOUND_STMT).
2002-05-08  Daniel Berlin  
2002-05-08  Daniel Berlin  
        s/varref_type/treeref_type/g
        s/varref_type/treeref_type/g
        s/create_varref/create_ref/g
        s/create_varref/create_ref/g
        * tree-flow.h: Add EXPRPHI, EXPRUSE, EXPRKILL, EXPRINJ.
        * tree-flow.h: Add EXPRPHI, EXPRUSE, EXPRKILL, EXPRINJ.
        Add structures and macros for each.
        Add structures and macros for each.
        Add tree_perform_ssapre prototype.
        Add tree_perform_ssapre prototype.
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-pre.o
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-pre.o
        (tree-ssa-pre.o): Add dependencies for tree-ssa-pre.o
        (tree-ssa-pre.o): Add dependencies for tree-ssa-pre.o
        * cp/Make-lang.in: Add tree-ssa-pre.o
        * cp/Make-lang.in: Add tree-ssa-pre.o
        * flags.h: Add flag_tree_ssa_pre.
        * flags.h: Add flag_tree_ssa_pre.
        * tree-ssa-pre.c: New file, SSA-PRE.
        * tree-ssa-pre.c: New file, SSA-PRE.
        * toplev.c: Add flag_tree_ssa_pre.
        * toplev.c: Add flag_tree_ssa_pre.
        (lang_independent_options): Add tree-ssa-pre.
        (lang_independent_options): Add tree-ssa-pre.
        * tree-dump.c (dump_files): Add ssapre dump.
        * tree-dump.c (dump_files): Add ssapre dump.
        * tree-optimize.c (optimize_tree): Do SSAPRE if requested.
        * tree-optimize.c (optimize_tree): Do SSAPRE if requested.
        * tree.h (dump_index): Add TDI_ssa_pre.
        * tree.h (dump_index): Add TDI_ssa_pre.
        * tree-dfa.c (create_ref): Add support for creating the EXPR*'s refs.
        * tree-dfa.c (create_ref): Add support for creating the EXPR*'s refs.
        (dump_varref): Add support for dumping EXPR* refs.
        (dump_varref): Add support for dumping EXPR* refs.
        * tree-ssa.c (search_fud_chains): Add BB to VARDEF_PHI_CHAIN_BB.
        * tree-ssa.c (search_fud_chains): Add BB to VARDEF_PHI_CHAIN_BB.
2002-05-07  Diego Novillo  
2002-05-07  Diego Novillo  
        * c-pretty-print.c (op_prio): Handle ABS_EXPR.
        * c-pretty-print.c (op_prio): Handle ABS_EXPR.
        Don't abort when the operand is not recognized.
        Don't abort when the operand is not recognized.
        (op_symbol): Don't abort when the operand is not recognized.
        (op_symbol): Don't abort when the operand is not recognized.
        * c-simplify.c (simplify_expr): Remove 'const' qualifier from first
        * c-simplify.c (simplify_expr): Remove 'const' qualifier from first
        argument.
        argument.
        Do not copy incoming expression.
        Do not copy incoming expression.
        Exclude handling of MODIFY_EXPR, INIT_EXPR, SAVE_EXPR and binary
        Exclude handling of MODIFY_EXPR, INIT_EXPR, SAVE_EXPR and binary
        expression nodes.
        expression nodes.
        (simplify_array_ref): Remove 'const' qualifier from first argument.
        (simplify_array_ref): Remove 'const' qualifier from first argument.
        Do not copy the incoming expression.
        Do not copy the incoming expression.
        (simplify_self_mod_expr): Ditto.
        (simplify_self_mod_expr): Ditto.
        Do not simplify the first operand twice.
        Do not simplify the first operand twice.
        (simplify_component_ref): Remove 'const' qualifier from first
        (simplify_component_ref): Remove 'const' qualifier from first
        argument.  Do not copy the incoming expression.
        argument.  Do not copy the incoming expression.
        (simplify_call_expr): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_modify_expr): Ditto.
        (simplify_modify_expr): Ditto.
        (simplify_boolean_expr): Ditto.
        (simplify_boolean_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_save_expr): Ditto.
        (simplify_save_expr): Ditto.
        (simplify_expr_wfl): Ditto.
        (simplify_expr_wfl): Ditto.
        (tree_build_scope): Re-write.  Do nothing if block already contains
        (tree_build_scope): Re-write.  Do nothing if block already contains
        a scope.  Use chainon to chain the body with the scope closing
        a scope.  Use chainon to chain the body with the scope closing
        node.
        node.
        (deep_copy_node): Do not check for NULL nodes.  Do not deep copy
        (deep_copy_node): Do not check for NULL nodes.  Do not deep copy
        declarations, types and constants.
        declarations, types and constants.
2002-05-06  Daniel Berlin  
2002-05-06  Daniel Berlin  
        * c-simplify.c (deep_copy_node): Don't copy DECL_STMT_DECL's.
        * c-simplify.c (deep_copy_node): Don't copy DECL_STMT_DECL's.
2002-05-06  Daniel Berlin  
2002-05-06  Daniel Berlin  
        * tree-simple.c (is_simple_compstmt): Don't post-initialize
        * tree-simple.c (is_simple_compstmt): Don't post-initialize
        statics or aggregate initializers.
        statics or aggregate initializers.
        * c-simplify.c (simplify_decl_stmt): Ditto.
        * c-simplify.c (simplify_decl_stmt): Ditto.
2002-05-06  Sebastian Pop  
2002-05-06  Sebastian Pop  
        * Makefile.in (simple-break-elim.o, simple-goto-elim.o, tree-dchain.o):
        * Makefile.in (simple-break-elim.o, simple-goto-elim.o, tree-dchain.o):
        Added.
        Added.
        * c-decl.c: Include tree-dchain.h
        * c-decl.c: Include tree-dchain.h
        (c_expand_body): Add entry point to the goto, break elimination
        (c_expand_body): Add entry point to the goto, break elimination
        after the simplification pass.
        after the simplification pass.
        * simple-break-elim.c: New file.
        * simple-break-elim.c: New file.
        * simple-goto-elim.c: New file.
        * simple-goto-elim.c: New file.
        * tree-dchain.h: New file.
        * tree-dchain.h: New file.
        * tree-dchain.c: New file.
        * tree-dchain.c: New file.
2002-05-02  Diego Novillo  
2002-05-02  Diego Novillo  
        * c-simplify.c (simplify_expr): Constify first argument.
        * c-simplify.c (simplify_expr): Constify first argument.
        Always work on a copy of the input expression.
        Always work on a copy of the input expression.
        Do not simplify COMPOUND_LITERAL_EXPR nor CONSTRUCTOR nodes.
        Do not simplify COMPOUND_LITERAL_EXPR nor CONSTRUCTOR nodes.
        (simplify_array_ref): Constify first argument.  Always work on a
        (simplify_array_ref): Constify first argument.  Always work on a
        copy of the input expression.
        copy of the input expression.
        (simplify_self_mod_expr): Ditto.
        (simplify_self_mod_expr): Ditto.
        (simplify_component_ref): Ditto.
        (simplify_component_ref): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_cond_expr): Ditto.
        When building the THEN_CLAUSE and ELSE_CLAUSE for the new IF_STMT,
        When building the THEN_CLAUSE and ELSE_CLAUSE for the new IF_STMT,
        create a scope for them and simplify the scope, not the expression.
        create a scope for them and simplify the scope, not the expression.
        (simplify_modify_expr): Constify first argument.  Always work on a
        (simplify_modify_expr): Constify first argument.  Always work on a
        copy of the input expression.
        copy of the input expression.
        (simplify_boolean_expr): Ditto.
        (simplify_boolean_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_save_expr): Ditto.
        (simplify_save_expr): Ditto.
        (simplify_expr_wfl): Ditto.
        (simplify_expr_wfl): Ditto.
        * tree-cfg.c (tree_find_basic_blocks): Update comments for
        * tree-cfg.c (tree_find_basic_blocks): Update comments for
        -fdump-tree-dot.
        -fdump-tree-dot.
        (tree_dump_cfg): Ditto.
        (tree_dump_cfg): Ditto.
        * tree-dump.c (dump_files): Rename -fdump-tree-graphviz to
        * tree-dump.c (dump_files): Rename -fdump-tree-graphviz to
        -fdump-tree-dot.
        -fdump-tree-dot.
        * tree-simple.c (is_simple_unary_expr): Do not handle &CONST
        * tree-simple.c (is_simple_unary_expr): Do not handle &CONST
        expressions.
        expressions.
        Handle COMPOUND_LITERAL_EXPR and CONSTRUCTOR nodes.
        Handle COMPOUND_LITERAL_EXPR and CONSTRUCTOR nodes.
        (is_simple_const): Strip NOPS and handle &CONST expressions.
        (is_simple_const): Strip NOPS and handle &CONST expressions.
        * tree.h (enum tree_dump_index): Remove references to GraphViz.
        * tree.h (enum tree_dump_index): Remove references to GraphViz.
        * doc/invoke.texi: Update documentation for -fdump-tree-dot.
        * doc/invoke.texi: Update documentation for -fdump-tree-dot.
2002-05-02  Sebastian Pop  
2002-05-02  Sebastian Pop  
        * c-pretty-print.c (dump_c_node): Don't print declarations
        * c-pretty-print.c (dump_c_node): Don't print declarations
        from the SCOPE_STMT_BLOCK, use the DECL_STMT instead.
        from the SCOPE_STMT_BLOCK, use the DECL_STMT instead.
2002-04-30  Diego Novillo  
2002-04-30  Diego Novillo  
        * c-pretty-print.c (NIY): Display an error string instead of aborting.
        * c-pretty-print.c (NIY): Display an error string instead of aborting.
        (op_prio): Add support for COMPOUND_EXPR, TRUTH_XOR_EXPR, MIN_EXPR,
        (op_prio): Add support for COMPOUND_EXPR, TRUTH_XOR_EXPR, MIN_EXPR,
        MAX_EXPR and NON_LVALUE_EXPR.
        MAX_EXPR and NON_LVALUE_EXPR.
        For EXPR_WITH_FILE_LOCATION nodes, return the priority of
        For EXPR_WITH_FILE_LOCATION nodes, return the priority of
        the internal node.
        the internal node.
        (op_symbol): Add support for TRUTH_XOR_EXPR.
        (op_symbol): Add support for TRUTH_XOR_EXPR.
        * c-simplify.c (simplify_stmt): Only remove null statements that
        * c-simplify.c (simplify_stmt): Only remove null statements that
        have been nullified by simplification.
        have been nullified by simplification.
        Call debug_tree() dump unhandled tree nodes.
        Call debug_tree() dump unhandled tree nodes.
        (simplify_for_stmt): Always deep-copy PRE_COND_S before adding it
        (simplify_for_stmt): Always deep-copy PRE_COND_S before adding it
        to PRE_P.
        to PRE_P.
        (simplify_expr): When simplifying a MODIFY_EXPR node into an
        (simplify_expr): When simplifying a MODIFY_EXPR node into an
        rvalue, return operand 0.
        rvalue, return operand 0.
        Handle VA_ARG_EXPR, BIT_FIELD_REF and NON_LVALUE_EXPR nodes.
        Handle VA_ARG_EXPR, BIT_FIELD_REF and NON_LVALUE_EXPR nodes.
        Treat TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR nodes as
        Treat TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR nodes as
        regular binary expressions.
        regular binary expressions.
        Call debug_tree() to dump an unhandled expression.
        Call debug_tree() to dump an unhandled expression.
        (simplify_array_ref): Do not simplify the base of an array.
        (simplify_array_ref): Do not simplify the base of an array.
        (simplify_call_expr): Do not simplify calls to builtins.
        (simplify_call_expr): Do not simplify calls to builtins.
        (simplify_cond_expr): Handle conditional expressions of type void.
        (simplify_cond_expr): Handle conditional expressions of type void.
        (simplify_boolean_expr): Return 'T != 0' instead of 'T'.
        (simplify_boolean_expr): Return 'T != 0' instead of 'T'.
        (simplify_save_expr): Do not wrap statement trees inside SAVE_EXPR
        (simplify_save_expr): Do not wrap statement trees inside SAVE_EXPR
        nodes.
        nodes.
        (tree_last_decl): Ignore FILE_STMT nodes preceding a SCOPE_STMT.
        (tree_last_decl): Ignore FILE_STMT nodes preceding a SCOPE_STMT.
        * tree-simple.c: Update grammar to accept any valid C array as the
        * tree-simple.c: Update grammar to accept any valid C array as the
        array base.
        array base.
        (is_simple_compstmt): Accept DECL_INITIAL expressions for read-only
        (is_simple_compstmt): Accept DECL_INITIAL expressions for read-only
        variables.
        variables.
        (is_simple_expr): Do not abort if the incoming tree is NULL.
        (is_simple_expr): Do not abort if the incoming tree is NULL.
        (is_simple_modify_expr): Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION
        (is_simple_modify_expr): Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION
        and NON_LVALUE_EXPR wrappers.
        and NON_LVALUE_EXPR wrappers.
        (is_simple_binary_expr): Ditto.
        (is_simple_binary_expr): Ditto.
        (is_simple_condexpr): Ditto.
        (is_simple_condexpr): Ditto.
        Accept TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR.
        Accept TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR.
        (is_simple_unary_expr): Do not abort it the incoming tree is NULL.
        (is_simple_unary_expr): Do not abort it the incoming tree is NULL.
        Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR
        Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR
        wrappers.
        wrappers.
        Handle BIT_FIELD_REF and VA_ARG_EXPR nodes.
        Handle BIT_FIELD_REF and VA_ARG_EXPR nodes.
        (is_simple_call_expr): Always return 1 for builtin calls.
        (is_simple_call_expr): Always return 1 for builtin calls.
        (is_simple_arrayref): Do not check the array base.
        (is_simple_arrayref): Do not check the array base.
2002-04-30  Daniel Berlin  
2002-04-30  Daniel Berlin  
        * c-simplify.c (simplify_call_expr): Don't try to simplify
        * c-simplify.c (simplify_call_expr): Don't try to simplify
        call_expr arglist if it's not there.
        call_expr arglist if it's not there.
2002-04-27  Diego Novillo  
2002-04-27  Diego Novillo  
        * c-decl.c (c_expand_body): Call simplify_tree to simplify a
        * c-decl.c (c_expand_body): Call simplify_tree to simplify a
        FUNCTION_DECL node.
        FUNCTION_DECL node.
        * c-simplify.c (simplify_tree): New function.
        * c-simplify.c (simplify_tree): New function.
        (simplify_stmt): Remove variable 'new_vars'.  Update all called
        (simplify_stmt): Remove variable 'new_vars'.  Update all called
        functions.
        functions.
        Remove argument 'scope'.  Update all callers.
        Remove argument 'scope'.  Update all callers.
        Do not keep track of new scope statements as they are entered.
        Do not keep track of new scope statements as they are entered.
        Do not call declare_tmp_vars().
        Do not call declare_tmp_vars().
        (simplify_for_stmt): Remove argument new_vars_p.  Update all callers.
        (simplify_for_stmt): Remove argument new_vars_p.  Update all callers.
        (simplify_while_stmt): Ditto.
        (simplify_while_stmt): Ditto.
        (simplify_do_stmt): Ditto.
        (simplify_do_stmt): Ditto.
        (simplify_if_stmt): Ditto.
        (simplify_if_stmt): Ditto.
        (simplify_switch_stmt): Ditto.
        (simplify_switch_stmt): Ditto.
        (simplify_decl_stmt): Reformat comments.
        (simplify_decl_stmt): Reformat comments.
        (simplify_expr): Remove argument new_vars_p.  Update all callers.
        (simplify_expr): Remove argument new_vars_p.  Update all callers.
        Call simplify_save_expr() to simplify SAVE_EXPR nodes.
        Call simplify_save_expr() to simplify SAVE_EXPR nodes.
        Call simplify_expr_wfl() to simplify EXPR_WITH_FILE_LOCATION nodes.
        Call simplify_expr_wfl() to simplify EXPR_WITH_FILE_LOCATION nodes.
        Do not call is_unop() and is_binop() when checking for unary and
        Do not call is_unop() and is_binop() when checking for unary and
        binary operators.
        binary operators.
        Do not return early after simplify statement-expressions.
        Do not return early after simplify statement-expressions.
        Do not call add_modify_stmt() to create assignment expressions.
        Do not call add_modify_stmt() to create assignment expressions.
        (simplify_array_ref): Remove argument new_vars_p.  Update all callers.
        (simplify_array_ref): Remove argument new_vars_p.  Update all callers.
        (simplify_self_mod_expr): Ditto.
        (simplify_self_mod_expr): Ditto.
        (simplify_component_ref): Ditto.
        (simplify_component_ref): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_call_expr): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_tree_list): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_cond_expr): Ditto.
        (simplify_modify_expr): Ditto.
        (simplify_modify_expr): Ditto.
        (simplify_boolean_expr): Ditto.
        (simplify_boolean_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_compound_expr): Ditto.
        (simplify_save_expr): New function.
        (simplify_save_expr): New function.
        (simplify_expr_wfl): New function.
        (simplify_expr_wfl): New function.
        (tree_build_scope): Reformat.
        (tree_build_scope): Reformat.
        (add_tree): Call stmt_has_effect() and expr_has_effect() to decide
        (add_tree): Call stmt_has_effect() and expr_has_effect() to decide
        whether or not to add a new tree to the list.
        whether or not to add a new tree to the list.
        (add_modify_stmt): Remove.
        (add_modify_stmt): Remove.
        (create_tmp_var): Remove 'new_vars_p' argument.
        (create_tmp_var): Remove 'new_vars_p' argument.
        Call pushdecl() to insert the newly created variable in the current
        Call pushdecl() to insert the newly created variable in the current
        binding scope.
        binding scope.
        (declare_tmp_vars): Do not create a BLOCK_VARS for the scope.
        (declare_tmp_vars): Do not create a BLOCK_VARS for the scope.
        (is_binop): Remove.
        (is_binop): Remove.
        (is_unop): Remove.
        (is_unop): Remove.
        (expr_has_effect): New function.
        (expr_has_effect): New function.
        * c-tree.h (simplify_tree): Remove second argument.
        * c-tree.h (simplify_tree): Remove second argument.
        * stmt.c (warn_if_unused_value): Check operand 0 of SAVE_EXPR
        * stmt.c (warn_if_unused_value): Check operand 0 of SAVE_EXPR
        nodes.
        nodes.
        * tree-dfa.c (find_refs_in_expr): Call find_refs_in_expr() to look
        * tree-dfa.c (find_refs_in_expr): Call find_refs_in_expr() to look
        inside an EXPR_WITH_FILE_LOCATION node.
        inside an EXPR_WITH_FILE_LOCATION node.
        * tree-simple.c (is_simple_stmt): Add a case for SCOPE_STMT nodes.
        * tree-simple.c (is_simple_stmt): Add a case for SCOPE_STMT nodes.
        (is_simple_compstmt): Assume that T is the first tree in the
        (is_simple_compstmt): Assume that T is the first tree in the
        compound statement's body.
        compound statement's body.
        Stop when a scope ending SCOPE_STMT node is found.
        Stop when a scope ending SCOPE_STMT node is found.
        (is_simple_binary_expr): Don't call is_simple_binop().
        (is_simple_binary_expr): Don't call is_simple_binop().
        (is_simple_condexpr): Don't call is_simple_relop().
        (is_simple_condexpr): Don't call is_simple_relop().
        (is_simple_binop): Remove.
        (is_simple_binop): Remove.
        (is_simple_relop): Remove.
        (is_simple_relop): Remove.
        (is_simple_unary_expr): Accept any operator with tree code class
        (is_simple_unary_expr): Accept any operator with tree code class
        '1' followed by a simple value.
        '1' followed by a simple value.
        Accept simple unary expressions wrapped inside SAVE_EXPR,
        Accept simple unary expressions wrapped inside SAVE_EXPR,
        EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
        EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
        (is_simple_id): Accept simple identifiers wrapped inside SAVE_EXPR,
        (is_simple_id): Accept simple identifiers wrapped inside SAVE_EXPR,
        EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
        EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
        * tree-simple.h (create_tmp_var): Remove second argument.
        * tree-simple.h (create_tmp_var): Remove second argument.
        (is_simple_binop): Remove.
        (is_simple_binop): Remove.
        (is_simple_relop): Remove.
        (is_simple_relop): Remove.
2002-04-22  Diego Novillo  
2002-04-22  Diego Novillo  
        * c-simplify.c (stmt_has_effect): New function.
        * c-simplify.c (stmt_has_effect): New function.
        (simplify_stmt): Fix example code in comment.
        (simplify_stmt): Fix example code in comment.
        Use EXPR_STMT_EXPR to access the expression in an expression
        Use EXPR_STMT_EXPR to access the expression in an expression
        statement.
        statement.
        Call debug_c_node to display unhandled statements.
        Call debug_c_node to display unhandled statements.
        Call stmt_has_effect to determine whether the statement has been
        Call stmt_has_effect to determine whether the statement has been
        nullified by the simplification process.
        nullified by the simplification process.
        (simplify_for_stmt): Do not simplify the initialization expression
        (simplify_for_stmt): Do not simplify the initialization expression
        if it's NULL.
        if it's NULL.
        Do not convert post_cond_s into a statement chain.
        Do not convert post_cond_s into a statement chain.
        Do not simplify the expression if it's NULL.
        Do not simplify the expression if it's NULL.
        (simplify_switch_stmt): initialize post_cond_s to NULL before
        (simplify_switch_stmt): initialize post_cond_s to NULL before
        simplifying the expression.
        simplifying the expression.
        (simplify_expr): Rename argument IS_LHS to NEEDS_LVALUE.  Update
        (simplify_expr): Rename argument IS_LHS to NEEDS_LVALUE.  Update
        all uses.
        all uses.
        When simplifying assignments, return the LHS of the assignment if
        When simplifying assignments, return the LHS of the assignment if
        the caller wants to use the assignment as an rvalue.
        the caller wants to use the assignment as an rvalue.
        Do not simplify ADDR_EXPR nodes.
        Do not simplify ADDR_EXPR nodes.
        Handle NOP_EXPR, CONVERT_EXPR, FIX_TRUNC_EXPR, FIX_CEIL_EXPR,
        Handle NOP_EXPR, CONVERT_EXPR, FIX_TRUNC_EXPR, FIX_CEIL_EXPR,
        FIX_ROUND_EXPR, INDIRECT_REF, NEGATE_EXPR, INTEGER_CST, STRING_CST,
        FIX_ROUND_EXPR, INDIRECT_REF, NEGATE_EXPR, INTEGER_CST, STRING_CST,
        COMPLEX_CST.
        COMPLEX_CST.
        Abort if the expression has not been simplified and cannot be used
        Abort if the expression has not been simplified and cannot be used
        as an rvalue to assign it to a temporary.
        as an rvalue to assign it to a temporary.
        When creating a new temporary to hold an lvalue, if the expression
        When creating a new temporary to hold an lvalue, if the expression
        is an indirect reference, use the address of the referenced object.
        is an indirect reference, use the address of the referenced object.
        When creating an indirect reference, use the pointed-to type as the
        When creating an indirect reference, use the pointed-to type as the
        type of the reference.
        type of the reference.
        (simplify_self_mod_expr): If the LHS operand needs to be
        (simplify_self_mod_expr): If the LHS operand needs to be
        simplified, simplify twice.  Once to produce an lvalue and another
        simplified, simplify twice.  Once to produce an lvalue and another
        to produce a simple value.
        to produce a simple value.
        (simplify_modify_expr): Break assignment chains (a = b = c = ...)
        (simplify_modify_expr): Break assignment chains (a = b = c = ...)
        into individual assignments.
        into individual assignments.
        (simplify_compound_expr):
        (simplify_compound_expr):
        (create_tmp_var): If the type is an array, use TYPE_POINTER_TO as
        (create_tmp_var): If the type is an array, use TYPE_POINTER_TO as
        the pointer type.
        the pointer type.
        (update_line_number): Fix typo in comment.
        (update_line_number): Fix typo in comment.
        (is_unop): Ditto.
        (is_unop): Ditto.
        (convert_to_stmt_chain): Only add statements that comply with
        (convert_to_stmt_chain): Only add statements that comply with
        stmt_has_effect().
        stmt_has_effect().
        * tree-dfa.c (find_declaration): Fix typo in comment.
        * tree-dfa.c (find_declaration): Fix typo in comment.
        (debug_varref): Ditto.
        (debug_varref): Ditto.
        * tree-flow.h: Ditto.
        * tree-flow.h: Ditto.
        * tree-simple.c (is_simple_stmt): New function.
        * tree-simple.c (is_simple_stmt): New function.
        (is_simple_compstmt): New function.
        (is_simple_compstmt): New function.
        (is_simple_expr): Fix typo in comment.
        (is_simple_expr): Fix typo in comment.
        (is_simple_rhs): Allow conditional expressions.
        (is_simple_rhs): Allow conditional expressions.
        (is_simple_modify_expr): Fix typo in comment.
        (is_simple_modify_expr): Fix typo in comment.
        (is_simple_modify_expr_lhs): Ditto.
        (is_simple_modify_expr_lhs): Ditto.
        (is_simple_binary_expr): Ditto.
        (is_simple_binary_expr): Ditto.
        (is_simple_condexpr): Ditto.
        (is_simple_condexpr): Ditto.
        (is_simple_relop): Ditto.
        (is_simple_relop): Ditto.
        (is_simple_unary_expr): Ditto.
        (is_simple_unary_expr): Ditto.
        Allow taking the address of a constant (for strings).
        Allow taking the address of a constant (for strings).
        (is_simple_call_expr): Fix typo in comment.
        (is_simple_call_expr): Fix typo in comment.
        Call is_simple_id to determine if the first operand is a SIMPLE
        Call is_simple_id to determine if the first operand is a SIMPLE
        function identifier.
        function identifier.
        (is_simple_arglist): Fix typo in comment.
        (is_simple_arglist): Fix typo in comment.
        (is_simple_varname): Ditto.
        (is_simple_varname): Ditto.
        (is_simple_const): Don't accept casts of SIMPLE constants.
        (is_simple_const): Don't accept casts of SIMPLE constants.
        (is_simple_id): Don't accept casts of SIMPLE identifiers.
        (is_simple_id): Don't accept casts of SIMPLE identifiers.
        (is_simple_val): Fix typo in comment.
        (is_simple_val): Fix typo in comment.
        (is_simple_arrayref): Ditto.
        (is_simple_arrayref): Ditto.
        (is_simple_compref): Ditto.
        (is_simple_compref): Ditto.
        (is_simple_compref_lhs): Ditto.
        (is_simple_compref_lhs): Ditto.
        (is_simple_cast_op): Ditto.
        (is_simple_cast_op): Ditto.
        (is_simple_exprseq): Allow NULL expression sequences.
        (is_simple_exprseq): Allow NULL expression sequences.
        * tree-simple.h (is_simple_stmt): Declare
        * tree-simple.h (is_simple_stmt): Declare
        (is_simple_compstmt): Declare.
        (is_simple_compstmt): Declare.
        * tree-ssa.c (follow_chain): Fix typo in comment.
        * tree-ssa.c (follow_chain): Fix typo in comment.
2002-04-22  Diego Novillo  
2002-04-22  Diego Novillo  
        * c-pretty-print.c (dump_c_node): Don't print function
        * c-pretty-print.c (dump_c_node): Don't print function
        bodies of FUNCTION_DECL nodes.
        bodies of FUNCTION_DECL nodes.
2002-04-19  Andreas Jaeger  
2002-04-19  Andreas Jaeger  
        * Makefile.in (c-call-graph.o): New.
        * Makefile.in (c-call-graph.o): New.
2002-04-18  Sebastian Pop  
2002-04-18  Sebastian Pop  
        * c-pretty-print.c (PRINT_FUNCTION_NAME): Define.
        * c-pretty-print.c (PRINT_FUNCTION_NAME): Define.
        (dump_c_node): Call pretty_print_string to print string.
        (dump_c_node): Call pretty_print_string to print string.
        Call print_call_name to print function names.
        Call print_call_name to print function names.
        (pretty_print_string): New function.
        (pretty_print_string): New function.
        (print_call_name): New function.
        (print_call_name): New function.
2002-04-17  Diego Novillo  
2002-04-17  Diego Novillo  
        * c-simplify.c (simplify_do_stmt): Call is_simple_condexpr to test
        * c-simplify.c (simplify_do_stmt): Call is_simple_condexpr to test
        if the conditional is in SIMPLE form.
        if the conditional is in SIMPLE form.
        (simplify_if_stmt): Ditto.
        (simplify_if_stmt): Ditto.
2002-04-17  Diego Novillo  
2002-04-17  Diego Novillo  
        * c-pretty-print.c (dump_c_node): Handle escape sequences in strings.
        * c-pretty-print.c (dump_c_node): Handle escape sequences in strings.
        (op_symbol): Handle TRUTH_NOT_EXPR.
        (op_symbol): Handle TRUTH_NOT_EXPR.
        * c-simplify.c: Rename 'after' with 'post' and 'before' with 'pre'
        * c-simplify.c: Rename 'after' with 'post' and 'before' with 'pre'
        everywhere.
        everywhere.
        Re-group some functions and add comments.
        Re-group some functions and add comments.
        (simplify_stmt): Update calls to simplify_for_stmt,
        (simplify_stmt): Update calls to simplify_for_stmt,
        simplify_while_stmt, simplify_do_stmt and simplify_switch_stmt.
        simplify_while_stmt, simplify_do_stmt and simplify_switch_stmt.
        Call simplify_if_stmt.
        Call simplify_if_stmt.
        Do not test if expression is in SIMPLE form before calling
        Do not test if expression is in SIMPLE form before calling
        simplify_expr.
        simplify_expr.
        Call convert_to_stmt_chain to emit statement trees for side effects
        Call convert_to_stmt_chain to emit statement trees for side effects
        found while simplifying.
        found while simplifying.
        (simplify_for_stmt): Re-implement.  Do not change structure of the
        (simplify_for_stmt): Re-implement.  Do not change structure of the
        statement.  Simplify each header expression and emit side effects
        statement.  Simplify each header expression and emit side effects
        at sequence points.
        at sequence points.
        (simplify_while_stmt): Ditto.
        (simplify_while_stmt): Ditto.
        (simplify_do_stmt): Ditto.
        (simplify_do_stmt): Ditto.
        (simplify_switch_stmt): Ditto.
        (simplify_switch_stmt): Ditto.
        (new_simplified_if): Rename to simplify_if_stmt.
        (new_simplified_if): Rename to simplify_if_stmt.
        Call simplify_expr to simplify the conditional.
        Call simplify_expr to simplify the conditional.
        (simplify_if_stmt): New name for new_simplified_if.
        (simplify_if_stmt): New name for new_simplified_if.
        (simplify_expr): Do not default simple_test_f to is_simple_expr.
        (simplify_expr): Do not default simple_test_f to is_simple_expr.
        If simple_test_f is not set, abort.
        If simple_test_f is not set, abort.
        Handle COMPOUND_EXPR, MODIFY_EXPR, TRUTH_ANDIF_EXPR,
        Handle COMPOUND_EXPR, MODIFY_EXPR, TRUTH_ANDIF_EXPR,
        TRUTH_ORIF_EXPR, SAVE_EXPR and EXPR_WITH_FILE_LOCATION.
        TRUTH_ORIF_EXPR, SAVE_EXPR and EXPR_WITH_FILE_LOCATION.
        (simplify_arglist): Rename to simplify_tree_list.
        (simplify_arglist): Rename to simplify_tree_list.
        (simplify_tree_list): New name for simplify_arglist.
        (simplify_tree_list): New name for simplify_arglist.
        (simplify_boolean_expr): New function.
        (simplify_boolean_expr): New function.
        (simplify_compound_expr): New function.
        (simplify_compound_expr): New function.
        (tree_build_scope): Use SCOPE_BEGIN_P instead of TREE_LANG_FLAG_0
        (tree_build_scope): Use SCOPE_BEGIN_P instead of TREE_LANG_FLAG_0
        to access scope operands.  Use COMPOUND_BODY instead of
        to access scope operands.  Use COMPOUND_BODY instead of
        TREE_OPERAND to access the body of the compound statement.
        TREE_OPERAND to access the body of the compound statement.
        (add_tree): Use a TREE_LIST container instead of directly chaining the
        (add_tree): Use a TREE_LIST container instead of directly chaining the
        trees.
        trees.
        (add_assignment_tree): Rename to add_modify_stmt.  Update all
        (add_assignment_tree): Rename to add_modify_stmt.  Update all
        callers.
        callers.
        (add_modify_stmt): New name for add_assignment_tree.
        (add_modify_stmt): New name for add_assignment_tree.
        (insert_before_continue_end): Do nothing it the tree to insert is
        (insert_before_continue_end): Do nothing it the tree to insert is
        NULL.
        NULL.
        (copy_stmt_chain): Rename to deep_copy_list.  Update all callers.
        (copy_stmt_chain): Rename to deep_copy_list.  Update all callers.
        (deep_copy_list): New name for copy_stmt_chain.
        (deep_copy_list): New name for copy_stmt_chain.
        (copy_stmt): Rename to deep_copy_node.  Update all callers.
        (copy_stmt): Rename to deep_copy_node.  Update all callers.
        (deep_copy_node): New name for copy_stmt.  Handle TREE_LIST
        (deep_copy_node): New name for copy_stmt.  Handle TREE_LIST
        trees.
        trees.
        (insert_before_first): New function.
        (insert_before_first): New function.
        (is_binop): Add COMPOUND_EXPR.
        (is_binop): Add COMPOUND_EXPR.
        (convert_to_stmt_chain): New function.
        (convert_to_stmt_chain): New function.
        * tree-cfg.c (make_for_stmt_blocks): Fix comment.
        * tree-cfg.c (make_for_stmt_blocks): Fix comment.
        * tree-simple.c (is_simple_condexpr): New function.
        * tree-simple.c (is_simple_condexpr): New function.
        (is_simple_const): Allow casts of SIMPLE constants.
        (is_simple_const): Allow casts of SIMPLE constants.
        (is_simple_id): Allow casts of SIMPLE identifiers.
        (is_simple_id): Allow casts of SIMPLE identifiers.
        (is_simple_cast): Call is_simple_cast_op.
        (is_simple_cast): Call is_simple_cast_op.
        (is_simple_cast_op): New function.
        (is_simple_cast_op): New function.
        (is_simple_exprseq): New function.
        (is_simple_exprseq): New function.
        * tree-simple.h (deep_copy_list): Declare.
        * tree-simple.h (deep_copy_list): Declare.
        (deep_copy_node): Declare.
        (deep_copy_node): Declare.
        (is_simple_cast_op): Declare.
        (is_simple_cast_op): Declare.
        (is_simple_exprseq): Declare.
        (is_simple_exprseq): Declare.
2002-04-03  Diego Novillo  
2002-04-03  Diego Novillo  
        * c-simplify.c (simplify_expr): Add arguments simple_tree_f and
        * c-simplify.c (simplify_expr): Add arguments simple_tree_f and
        is_lhs.  Update all callers.
        is_lhs.  Update all callers.
        Call simplify_call_expr, simplify_cond_expr, simplify_arglist and
        Call simplify_call_expr, simplify_cond_expr, simplify_arglist and
        simplify_modify_expr.
        simplify_modify_expr.
        Call is_unop and is_binop to check for unary and binary operators.
        Call is_unop and is_binop to check for unary and binary operators.
        (simplify_binary_expr): Remove.
        (simplify_binary_expr): Remove.
        (simplify_call_expr): New function.
        (simplify_call_expr): New function.
        (simplify_arglist): New function.
        (simplify_arglist): New function.
        (simplify_cond_expr): New function.
        (simplify_cond_expr): New function.
        (simplify_modify_expr): New function.
        (simplify_modify_expr): New function.
        (keep_stmt_p): Remove.
        (keep_stmt_p): Remove.
        (is_binop): New function.
        (is_binop): New function.
        (is_unop): New function.
        (is_unop): New function.
        (simplify_stmt): Don't call keep_stmt_p.
        (simplify_stmt): Don't call keep_stmt_p.
        (simplify_decl_stmt): Call add_assignment_tree.
        (simplify_decl_stmt): Call add_assignment_tree.
        * tree-simple.c: Include c-tree.h
        * tree-simple.c: Include c-tree.h
        Add expression-statements to the SIMPLE grammar.
        Add expression-statements to the SIMPLE grammar.
        (is_simple_modify_expr_lhs): New function.
        (is_simple_modify_expr_lhs): New function.
        (is_simple_modify_expr): Call it.
        (is_simple_modify_expr): Call it.
        (is_simple_relop): Update comment.
        (is_simple_relop): Update comment.
        (is_simple_unary_expr): Allow expression-statements.
        (is_simple_unary_expr): Allow expression-statements.
        (is_simple_arglist): New function.
        (is_simple_arglist): New function.
        (is_simple_call_expr): Call it.
        (is_simple_call_expr): Call it.
        (is_simple_id): Accept expressions taking the address of a
        (is_simple_id): Accept expressions taking the address of a
        function.
        function.
        * tree-simple.h (is_simple_modify_expr_lhs): Declare.
        * tree-simple.h (is_simple_modify_expr_lhs): Declare.
        (is_simple_arglist): Declare.
        (is_simple_arglist): Declare.
2002-03-21  Diego Novillo  
2002-03-21  Diego Novillo  
        * Makefile.in (c-simplify.o): Add dependency on varray.h.
        * Makefile.in (c-simplify.o): Add dependency on varray.h.
        * c-simplify.c: Include varray.h.
        * c-simplify.c: Include varray.h.
        Remove comments with SIMPLE grammar.
        Remove comments with SIMPLE grammar.
        (simplify_array_ref): New.
        (simplify_array_ref): New.
        (simplify_self_mod_expr): New.
        (simplify_self_mod_expr): New.
        (simplify_component_ref): New.
        (simplify_component_ref): New.
        (add_assignment_tree): New.
        (add_assignment_tree): New.
        (simplify_expr): Call simplify_array_ref to simplify array
        (simplify_expr): Call simplify_array_ref to simplify array
        references.
        references.
        Call simplify_self_mod_expr to simplify ++, --, += and -=
        Call simplify_self_mod_expr to simplify ++, --, += and -=
        expressions.
        expressions.
        Call simplify_component_ref to simplify references to structures.
        Call simplify_component_ref to simplify references to structures.
        (simplify_binary_expr): Do not check whether the expression is
        (simplify_binary_expr): Do not check whether the expression is
        already in SIMPLE form.
        already in SIMPLE form.
        * tree-simple.c: Document changes from original SIMPLE grammar.
        * tree-simple.c: Document changes from original SIMPLE grammar.
        (is_simple_unary_expr): Add check for *ID.
        (is_simple_unary_expr): Add check for *ID.
        (is_simple_call_expr): Update comments.
        (is_simple_call_expr): Update comments.
        (is_simple_const): Ditto.
        (is_simple_const): Ditto.
        (is_simple_id): Do not accept *ID expressions.
        (is_simple_id): Do not accept *ID expressions.
        (is_simple_val): Update comments.
        (is_simple_val): Update comments.
        (is_simple_arrayref): Accept any variable name as the base address.
        (is_simple_arrayref): Accept any variable name as the base address.
        (is_simple_compref_lhs): New.
        (is_simple_compref_lhs): New.
        (is_simple_compref): Call it.
        (is_simple_compref): Call it.
        * tree-simple.h (is_simple_compref_lhs): Declare.
        * tree-simple.h (is_simple_compref_lhs): Declare.
2002-03-18  Diego Novillo  
2002-03-18  Diego Novillo  
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-simple.o
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-simple.o
        (tree-simple.o): New rule.
        (tree-simple.o): New rule.
        * c-simplify.c (simplified_p): Remove.
        * c-simplify.c (simplified_p): Remove.
        (simplified_rec_p): Remove.
        (simplified_rec_p): Remove.
        (simplified_condition_p): Remove.
        (simplified_condition_p): Remove.
        (simplify_for_stmt): Call is_simple_expr instead of
        (simplify_for_stmt): Call is_simple_expr instead of
        simplified_condition_p.
        simplified_condition_p.
        (simplify_while_stmt): Ditto.
        (simplify_while_stmt): Ditto.
        (simplify_do_stmt): Call is_simple_expr instead of simplified_p.
        (simplify_do_stmt): Call is_simple_expr instead of simplified_p.
        (new_simplified_if): Call is_simple_expr instead of
        (new_simplified_if): Call is_simple_expr instead of
        simplified_rec_p.
        simplified_rec_p.
        (simplify_decl_stmt): Update comment.
        (simplify_decl_stmt): Update comment.
        (simplify_expr): Return the original expression if it's already
        (simplify_expr): Return the original expression if it's already
        in SIMPLE form.
        in SIMPLE form.
        Do not special case most binary and unary expressions.
        Do not special case most binary and unary expressions.
        When simplifying array references, create temporary variables to
        When simplifying array references, create temporary variables to
        hold the base address for the array.
        hold the base address for the array.
        Simplify COMPONENT_REF expressions separately.
        Simplify COMPONENT_REF expressions separately.
        Call simplify_binary_expr to handle most binary expressions.
        Call simplify_binary_expr to handle most binary expressions.
        (simplify_binary_expr): New function.
        (simplify_binary_expr): New function.
        (keep_stmt_p): Call is_simple_unary_expr to determine whether the
        (keep_stmt_p): Call is_simple_unary_expr to determine whether the
        statement should be kept or not.
        statement should be kept or not.
        * tree-simple.c: New file.
        * tree-simple.c: New file.
        * tree-simple.h (is_simple_expr): Declare.
        * tree-simple.h (is_simple_expr): Declare.
        (is_simple_rhs): Declare.
        (is_simple_rhs): Declare.
        (is_simple_modify_expr): Declare.
        (is_simple_modify_expr): Declare.
        (is_simple_binary_expr): Declare.
        (is_simple_binary_expr): Declare.
        (is_simple_binop): Declare.
        (is_simple_binop): Declare.
        (is_simple_relop): Declare.
        (is_simple_relop): Declare.
        (is_simple_unary_expr): Declare.
        (is_simple_unary_expr): Declare.
        (is_simple_call_expr): Declare.
        (is_simple_call_expr): Declare.
        (is_simple_const): Declare.
        (is_simple_const): Declare.
        (is_simple_id): Declare.
        (is_simple_id): Declare.
        (is_simple_varname): Declare.
        (is_simple_varname): Declare.
        (is_simple_val): Declare.
        (is_simple_val): Declare.
        (is_simple_arrayref): Declare.
        (is_simple_arrayref): Declare.
        (is_simple_compref): Declare.
        (is_simple_compref): Declare.
        (is_simple_cast): Declare.
        (is_simple_cast): Declare.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-simple.o
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-simple.o
2002-03-18  Diego Novillo  
2002-03-18  Diego Novillo  
        * tree-simple.h: New file.
        * tree-simple.h: New file.
        * Makefile.in (c-simplify.o): Add dependency on tree-simple.h
        * Makefile.in (c-simplify.o): Add dependency on tree-simple.h
        * c-simplify.c: Reformat some comments.
        * c-simplify.c: Reformat some comments.
        (tree_last_decl): Declare.
        (tree_last_decl): Declare.
2002-03-18  Sebastian Pop  
2002-03-18  Sebastian Pop  
        * c-simplify.c (insert_stmt_chain): Delete.
        * c-simplify.c (insert_stmt_chain): Delete.
        (simplified_condition_p, insert_after_case_labels): New.
        (simplified_condition_p, insert_after_case_labels): New.
        (simplify_stmt, simplify_for_stmt, simplify_while_stmt,
        (simplify_stmt, simplify_for_stmt, simplify_while_stmt,
        simplify_do_stmt, new_simplified_if, simplify_switch_stmt):
        simplify_do_stmt, new_simplified_if, simplify_switch_stmt):
        Returns a single node, generate a chain of statements to be executed
        Returns a single node, generate a chain of statements to be executed
        before the if, and a list of new variables.
        before the if, and a list of new variables.
        (new_simplified_if): Simplify clauses.
        (new_simplified_if): Simplify clauses.
        (simplify_expr): Remove unused parameter scope.
        (simplify_expr): Remove unused parameter scope.
2002-03-14  Sebastian Pop  
2002-03-14  Sebastian Pop  
        * c-simplify.c (simplify_switch_stmt, simplify_expr): Add scope
        * c-simplify.c (simplify_switch_stmt, simplify_expr): Add scope
        parameter.
        parameter.
        (simplify_while_stmt, simplify_do_stmt, simplify_for_stmt): Avoid
        (simplify_while_stmt, simplify_do_stmt, simplify_for_stmt): Avoid
        negating loop condition during simplification.
        negating loop condition during simplification.
        (new_simplified_if): Don't simplify the IF_BODY.
        (new_simplified_if): Don't simplify the IF_BODY.
        (copy_stmt_chain): Use copy_stmt.
        (copy_stmt_chain): Use copy_stmt.
        (copy_stmt): New function.
        (copy_stmt): New function.
2002-02-28  Sebastian Pop  
2002-02-28  Sebastian Pop  
        * tree-dfa.c (find_refs_in_stmt): Changed if/else statements in
        * tree-dfa.c (find_refs_in_stmt): Changed if/else statements in
        a switch.
        a switch.
2002-02-28  Sebastian Pop  
2002-02-28  Sebastian Pop  
        * c-simplify.c (simplify_if_stmt): Deleted.
        * c-simplify.c (simplify_if_stmt): Deleted.
        (new_simplified_if): New function.
        (new_simplified_if): New function.
        (make_type_writable): New function.
        (make_type_writable): New function.
        (insert_before_continue_end): New function.
        (insert_before_continue_end): New function.
        (insert_before_continue): New function.
        (insert_before_continue): New function.
        (copy_stmt_chain): New function.
        (copy_stmt_chain): New function.
        (insert_stmt_chain): New function.
        (insert_stmt_chain): New function.
        (update_line_number): New function.
        (update_line_number): New function.
        (simplified_p): New function.
        (simplified_p): New function.
        (simplified_rec_p) New function.
        (simplified_rec_p) New function.
        (simplify_stmt): Modify the way to call simplification
        (simplify_stmt): Modify the way to call simplification
        of COMPOUND_STMT, FOR_STMT, WHILE_STMT, DO_STMT, IF_STMT,
        of COMPOUND_STMT, FOR_STMT, WHILE_STMT, DO_STMT, IF_STMT,
        and SCOPE_STMT in order to avoid to execute the code after
        and SCOPE_STMT in order to avoid to execute the code after
        the switch.  Add FILE_STMT, LABEL_STMT, GOTO_STMT, ASM_STMT cases.
        the switch.  Add FILE_STMT, LABEL_STMT, GOTO_STMT, ASM_STMT cases.
        Simplified a little the code after the switch.
        Simplified a little the code after the switch.
        (simplify_for_stmt): Change functions parameters.
        (simplify_for_stmt): Change functions parameters.
        Add code to simplify the FOR_INIT_STMT, FOR_COND, FOR_EXPR.
        Add code to simplify the FOR_INIT_STMT, FOR_COND, FOR_EXPR.
        (simplify_while_stmt): Change functions parameters.
        (simplify_while_stmt): Change functions parameters.
        Add code to simplify the WHILE_COND.
        Add code to simplify the WHILE_COND.
        (simplify_do_stmt): Change functions parameters.
        (simplify_do_stmt): Change functions parameters.
        Add code to simplify the DO_COND.
        Add code to simplify the DO_COND.
        (simplify_switch_stmt): Change functions parameters.
        (simplify_switch_stmt): Change functions parameters.
        (simplify_expr): Remove scope parameter.
        (simplify_expr): Remove scope parameter.
        Avoid to introduce a new temporary variable for an expression
        Avoid to introduce a new temporary variable for an expression
        that is already simplified.
        that is already simplified.
        ([ARRAY|COMPONENT]_REF, COND_EXPR): Handle them apart.
        ([ARRAY|COMPONENT]_REF, COND_EXPR): Handle them apart.
        (TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR): Avoid to evaluate the second
        (TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR): Avoid to evaluate the second
        operand if the value can be deduced from the first one.
        operand if the value can be deduced from the first one.
        (keep_stmt_p): Add some other cases in which we don't need to keep
        (keep_stmt_p): Add some other cases in which we don't need to keep
        a statement after its simplification.
        a statement after its simplification.
2002-02-28  Sebastian Pop  
2002-02-28  Sebastian Pop  
        * Makefile.in: Add c-call-graph.o dependence.
        * Makefile.in: Add c-call-graph.o dependence.
        * c-call-graph.c: New file.
        * c-call-graph.c: New file.
        * c-decl.c (c_expand_body): Add an entry point for call-graph.
        * c-decl.c (c_expand_body): Add an entry point for call-graph.
        * tree-dump.c (dump_files): Add the flag dump-call-graph.
        * tree-dump.c (dump_files): Add the flag dump-call-graph.
        * tree.h (tree_dump_index): Add TDI_xml.
        * tree.h (tree_dump_index): Add TDI_xml.
2002-02-28  Sebastian Pop  
2002-02-28  Sebastian Pop  
        * c-pretty-print.c (dump_c_tree): Declare it extern.
        * c-pretty-print.c (dump_c_tree): Declare it extern.
        (dump_c_node): Declare it extern.
        (dump_c_node): Declare it extern.
        (dump_c_scope_vars): Deleted, some code moved in print_declaration ().
        (dump_c_scope_vars): Deleted, some code moved in print_declaration ().
        (print_declaration): New function.
        (print_declaration): New function.
        (print_function_decl): New function.
        (print_function_decl): New function.
        (print_struct_decl): New function.
        (print_struct_decl): New function.
        (INDENT_PRINT_C_NODE): Deleted.
        (INDENT_PRINT_C_NODE): Deleted.
        (INDENT): New macro.
        (INDENT): New macro.
        (NIY): Define the macro body in a block.
        (NIY): Define the macro body in a block.
        (dump_c_node): Add dumping for TREE_PURPOSE operand in TREE_LIST.
        (dump_c_node): Add dumping for TREE_PURPOSE operand in TREE_LIST.
        [VOID|INTEGER|REAL|COMPLEX|VECTOR|ENUMERAL|BOOLEAN|CHAR]_TYPE nodes:
        [VOID|INTEGER|REAL|COMPLEX|VECTOR|ENUMERAL|BOOLEAN|CHAR]_TYPE nodes:
        insert some code from print-tree.c:print_node_brief () in order to
        insert some code from print-tree.c:print_node_brief () in order to
        stabilise the type printing.
        stabilise the type printing.
        [RECORD|UNION]_TYPE nodes: Don't print their contents by default,
        [RECORD|UNION]_TYPE nodes: Don't print their contents by default,
        move the existing code in print_struct_decl ().
        move the existing code in print_struct_decl ().
        [POSTDECREMENT|POSTINCREMENT]_EXPR: Print the operand in post postion.
        [POSTDECREMENT|POSTINCREMENT]_EXPR: Print the operand in post postion.
        [MIN|MAX|ABS]_EXPR: New code for printing these nodes.
        [MIN|MAX|ABS]_EXPR: New code for printing these nodes.
        FOR_STMT: Don't print the FOR_BODY if it is not present.
        FOR_STMT: Don't print the FOR_BODY if it is not present.
        RETURN_STMT: Don't print the return expression for a void function.
        RETURN_STMT: Don't print the return expression for a void function.
        ASM_STMT: New code for printing this node.
        ASM_STMT: New code for printing this node.
        SCOPE_STMT: Use print_declaration instead of dump_c_scope_vars.
        SCOPE_STMT: Use print_declaration instead of dump_c_scope_vars.
        COMPOUND_LITERAL_EXPR: Add the node as not implemented yet.
        COMPOUND_LITERAL_EXPR: Add the node as not implemented yet.
        (op_prio): Fix switch indent.
        (op_prio): Fix switch indent.
        Add node EXPR_WITH_FILE_LOCATION with priority 16.
        Add node EXPR_WITH_FILE_LOCATION with priority 16.
        (op_symbol): Fix switch indent.
        (op_symbol): Fix switch indent.
2002-01-25  Diego Novillo  
2002-01-25  Diego Novillo  
        * Makefile.in (c-pretty-print.o): Add dependency on errors.h.
        * Makefile.in (c-pretty-print.o): Add dependency on errors.h.
        * c-decl.c (c_expand_body): React to -ftree-dump-simple.
        * c-decl.c (c_expand_body): React to -ftree-dump-simple.
        * c-pretty-print.c: Fix typo in header comment.
        * c-pretty-print.c: Fix typo in header comment.
        (NYI): Flush output buffer, dump the tree and abort.
        (NYI): Flush output buffer, dump the tree and abort.
        (dump_c_node): Add unparsing code for ERROR_MARK, IDENTIFIER_NODE,
        (dump_c_node): Add unparsing code for ERROR_MARK, IDENTIFIER_NODE,
        ARRAY_TYPE, UNION_TYPE, STRING_CST, CEIL_DIV_EXPR, FLOOR_DIV_EXPR,
        ARRAY_TYPE, UNION_TYPE, STRING_CST, CEIL_DIV_EXPR, FLOOR_DIV_EXPR,
        ROUND_DIV_EXPR, TRUNC_MOD_EXPR, FLOOR_MOD_EXPR, ROUND_MOD_EXPR,
        ROUND_DIV_EXPR, TRUNC_MOD_EXPR, FLOOR_MOD_EXPR, ROUND_MOD_EXPR,
        RDIV_EXPR, EXACT_DIV_EXPR, LROTATE_EXPR, RROTATE_EXPR,
        RDIV_EXPR, EXACT_DIV_EXPR, LROTATE_EXPR, RROTATE_EXPR,
        BIT_ANDTC_EXPR, BIT_NOT_EXPR, UNORDERED_EXPR, SAVE_EXPR and
        BIT_ANDTC_EXPR, BIT_NOT_EXPR, UNORDERED_EXPR, SAVE_EXPR and
        EXPR_WITH_FILE_LOCATION.
        EXPR_WITH_FILE_LOCATION.
        Unify unparsing code for common binary and unary expressions.
        Unify unparsing code for common binary and unary expressions.
        Handle indirect references like any other unary expression.
        Handle indirect references like any other unary expression.
        (dump_c_scope_vars): Remove unused variable 'context'.
        (dump_c_scope_vars): Remove unused variable 'context'.
        Call dump_c_node to print the type.
        Call dump_c_node to print the type.
        (dump_c_indirect_ref): Remove.
        (dump_c_indirect_ref): Remove.
        (op_prio): New function.
        (op_prio): New function.
        (op_symbol): New function.
        (op_symbol): New function.
        * c-simplify.c (simplify_stmt): Do not simplify a return
        * c-simplify.c (simplify_stmt): Do not simplify a return
        expression, only its second operand.
        expression, only its second operand.
        Fix capitalization in error message.
        Fix capitalization in error message.
        (simplify_expr): Add documentation.
        (simplify_expr): Add documentation.
        Fix capitalization in error message.
        Fix capitalization in error message.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-simple.
        * tree-dump.c (dump_files): Add entry for -fdump-tree-simple.
        (dump_options): Add entry for -unparse.
        (dump_options): Add entry for -unparse.
        * tree.h (TDI_simple): Define.
        * tree.h (TDI_simple): Define.
        (TDF_UNPARSE): Define.
        (TDF_UNPARSE): Define.
        * doc/invoke.texi: Document -fdump-tree-simple.
        * doc/invoke.texi: Document -fdump-tree-simple.
2002-01-23  Sebastian Pop  
2002-01-23  Sebastian Pop  
        * c-pretty-print.c: Clean C++ comments.
        * c-pretty-print.c: Clean C++ comments.
        (debug_output_buffer): Remove declaration and definition.
        (debug_output_buffer): Remove declaration and definition.
        * diagnostic.h (debug_output_buffer): Add declaration.
        * diagnostic.h (debug_output_buffer): Add declaration.
        * diagnostic.c (debug_output_buffer): Add definition.
        * diagnostic.c (debug_output_buffer): Add definition.
2002-01-21  Diego Novillo  
2002-01-21  Diego Novillo  
        * tree-dfa.c (find_refs_in_stmt): Fix capitalization in error
        * tree-dfa.c (find_refs_in_stmt): Fix capitalization in error
        message.
        message.
        (find_refs_in_expr): Ditto.
        (find_refs_in_expr): Ditto.
2002-01-20  Diego Novillo  
2002-01-20  Diego Novillo  
            Sebastian Pop  
            Sebastian Pop  
        * Makefile.in: Add c-simplify.o.
        * Makefile.in: Add c-simplify.o.
        * cp/Make-lang.in: Ditto.
        * cp/Make-lang.in: Ditto.
        * c-decl.c (c_expand_body): Call simplify_stmt() before
        * c-decl.c (c_expand_body): Call simplify_stmt() before
        calling optimize_tree().
        calling optimize_tree().
        * c-simplify.c: New file.
        * c-simplify.c: New file.
        * c-tree.h (simplify_stmt): Declare.
        * c-tree.h (simplify_stmt): Declare.
        (print_c_tree)
        (print_c_tree)
        * tree-dfa.c (find_refs_in_stmt): Fix error message for unhandled
        * tree-dfa.c (find_refs_in_stmt): Fix error message for unhandled
        statement codes.
        statement codes.
2002-01-20  Sebastian Pop  
2002-01-20  Sebastian Pop  
        * Makefile.in: Add c-pretty-print.o.
        * Makefile.in: Add c-pretty-print.o.
        * cp/Make-lang.in: Ditto.
        * cp/Make-lang.in: Ditto.
        * c-pretty-print.c: New file.
        * c-pretty-print.c: New file.
        * c-tree.h (print_c_tree): Declare.
        * c-tree.h (print_c_tree): Declare.
        (print_c_node): Declare.
        (print_c_node): Declare.
        (debug_c_tree): Declare.
        (debug_c_tree): Declare.
        (debug_c_node): Declare.
        (debug_c_node): Declare.
2001-12-29  Diego Novillo  
2001-12-29  Diego Novillo  
        * c-lang.c (c_post_options): Move code to enable tree-ssa
        * c-lang.c (c_post_options): Move code to enable tree-ssa
        if -Wuninitialized is used ...
        if -Wuninitialized is used ...
        * c-common.c (c_common_post_options): ... here.
        * c-common.c (c_common_post_options): ... here.
2001-12-29  Diego Novillo  
2001-12-29  Diego Novillo  
        * Makefile.in (tree-optimize.o): Don't depend on c-common.h
        * Makefile.in (tree-optimize.o): Don't depend on c-common.h
        * tree-cfg.c: Don't include c-tree.h.  Explain why we need to
        * tree-cfg.c: Don't include c-tree.h.  Explain why we need to
        include c-common.h.
        include c-common.h.
        * tree-dfa.c: Explain why we need to include c-common.h.
        * tree-dfa.c: Explain why we need to include c-common.h.
        * tree-ssa.c: Ditto.
        * tree-ssa.c: Ditto.
        * tree-optimize.c: Don't include c-common.h
        * tree-optimize.c: Don't include c-common.h
2001-12-21  Nathan Sidwell  
2001-12-21  Nathan Sidwell  
        Revert my patch of 2001-07-23 for the moment.
        Revert my patch of 2001-07-23 for the moment.
2001-10-15  Diego Novillo  
2001-10-15  Diego Novillo  
        * tree-dfa.c (create_varref): If the new reference is inside a
        * tree-dfa.c (create_varref): If the new reference is inside a
        statement, add it to the list of references for that statement.
        statement, add it to the list of references for that statement.
2001-10-14  Diego Novillo  
2001-10-14  Diego Novillo  
        * Merge from mainline:
        * Merge from mainline:
        Tue Sep 11 11:37:52 CEST 2001  Jan Hubicka  
        Tue Sep 11 11:37:52 CEST 2001  Jan Hubicka  
                * basic-block.h (cached_make_edge): New.
                * basic-block.h (cached_make_edge): New.
                (make_edge): Remove first parameter.
                (make_edge): Remove first parameter.
                * flow.c (cached_make_edge): Rename from make_edge; return
                * flow.c (cached_make_edge): Rename from make_edge; return
                newly created edge; use obstack allocation.
                newly created edge; use obstack allocation.
                (make_edge): New.
                (make_edge): New.
                (flow_call_edges_add): Updaet make_edge call.
                (flow_call_edges_add): Updaet make_edge call.
                (add_noreturn_fake_exit_edges): Likewise.
                (add_noreturn_fake_exit_edges): Likewise.
                (connect_infinite_loops_to_exit): Liekwise.
                (connect_infinite_loops_to_exit): Liekwise.
                (make_label_edge, make_edges, find_sub_basic_blocks): Use
                (make_label_edge, make_edges, find_sub_basic_blocks): Use
                cached_make_edge.
                cached_make_edge.
                * profile.c (branch_prob): Update make_edge call.
                * profile.c (branch_prob): Update make_edge call.
                * ssa-dce.c (ssa_eliminate_dead_code): Likewise.
                * ssa-dce.c (ssa_eliminate_dead_code): Likewise.
2001-10-14  Diego Novillo  
2001-10-14  Diego Novillo  
        * Makefile.in (tree-ssa.o): Remove dependency on flags.h.
        * Makefile.in (tree-ssa.o): Remove dependency on flags.h.
        (tree-optimize.o): Add dependency on flags.h.
        (tree-optimize.o): Add dependency on flags.h.
        * bb-reorder.c (fixup_reorder_chain): Update call to make_edge.
        * bb-reorder.c (fixup_reorder_chain): Update call to make_edge.
        * c-lang.c (c_post_options): Set flag_tree_ssa if -Wuninitialized
        * c-lang.c (c_post_options): Set flag_tree_ssa if -Wuninitialized
        is given.
        is given.
        * ifcvt.c (find_if_case_1): Update call to make_edge.
        * ifcvt.c (find_if_case_1): Update call to make_edge.
        * toplev.c (toplev_main): Do not warn about -Wuninitialized without
        * toplev.c (toplev_main): Do not warn about -Wuninitialized without
        -O if -ftree-ssa is used.
        -O if -ftree-ssa is used.
        * tree-cfg.c (dot_dump_file): Remove.
        * tree-cfg.c (dot_dump_file): Remove.
        (dot_dump_flags): Remove.
        (dot_dump_flags): Remove.
        (cfg_dump_file): Rename to dump_file.
        (cfg_dump_file): Rename to dump_file.
        (cfg_dump_flags): Rename to dump_flags.
        (cfg_dump_flags): Rename to dump_flags.
        (remove_bb_ann): New function.
        (remove_bb_ann): New function.
        (tree_find_basic_blocks): Do not open dump files at the beginning
        (tree_find_basic_blocks): Do not open dump files at the beginning
        of the function.
        of the function.
        Do not call delete_cfg.
        Do not call delete_cfg.
        Create annotations for ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        Create annotations for ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        (make_for_stmt_blocks): Update FOR_INIT_STMT_BB and FOR_COND_BB
        (make_for_stmt_blocks): Update FOR_INIT_STMT_BB and FOR_COND_BB
        when creating the header blocks.
        when creating the header blocks.
        Create the blocks for the loop body before the expression block.
        Create the blocks for the loop body before the expression block.
        (make_while_stmt_blocks): Update END_WHILE_BB when creating the
        (make_while_stmt_blocks): Update END_WHILE_BB when creating the
        header blocks.
        header blocks.
        Create the blocks for the loop body before the end-while block.
        Create the blocks for the loop body before the end-while block.
        (make_do_stmt_blocks): Update DO_COND_BB when creating header
        (make_do_stmt_blocks): Update DO_COND_BB when creating header
        blocks.
        blocks.
        Create the blocks for the loop body before the block for DO_COND.
        Create the blocks for the loop body before the block for DO_COND.
        (create_bb): When creating loop header blocks, allocate space for
        (create_bb): When creating loop header blocks, allocate space for
        the header_blocks union.
        the header_blocks union.
        Call create_bb_ann to create a new annotation.
        Call create_bb_ann to create a new annotation.
        (remove_bb_ann): New function.
        (remove_bb_ann): New function.
        (tree_split_bb): New function.
        (tree_split_bb): New function.
        (make_edges): Remove first argument from call to make_edge,
        (make_edges): Remove first argument from call to make_edge,
        make_ctrl_stmt_edges, make_exit_edges, make_for_stmt_edges,
        make_ctrl_stmt_edges, make_exit_edges, make_for_stmt_edges,
        make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
        make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
        make_goto_stmt_edges, make_break_stmt_edges and
        make_goto_stmt_edges, make_break_stmt_edges and
        make_continue_stmt_edges.
        make_continue_stmt_edges.
        When creating edges for the default label, remove the fallthru edge
        When creating edges for the default label, remove the fallthru edge
        that was created for the associated SWITCH_STMT entry block.
        that was created for the associated SWITCH_STMT entry block.
        Do not call delete_unreachable_blocks.
        Do not call delete_unreachable_blocks.
        Call tree_cleanup_cfg.
        Call tree_cleanup_cfg.
        (make_ctrl_stmt_edges): Remove first argument.
        (make_ctrl_stmt_edges): Remove first argument.
        (make_exit_edges): Remove first argument.
        (make_exit_edges): Remove first argument.
        If the last element of the block is an EXPR_STMT, assume that it is
        If the last element of the block is an EXPR_STMT, assume that it is
        the call to a non-returning function and make an edge to the exit
        the call to a non-returning function and make an edge to the exit
        block.
        block.
        Do not call make_return_stmt_edges.  Call make_edge directly.
        Do not call make_return_stmt_edges.  Call make_edge directly.
        (make_for_stmt_edges): Remove first argument.
        (make_for_stmt_edges): Remove first argument.
        Simplify the graph for infinite and zero-iteration loops.
        Simplify the graph for infinite and zero-iteration loops.
        (make_while_stmt_edges): Remove first argument.
        (make_while_stmt_edges): Remove first argument.
        Simplify the graph for infinite and zero-iteration loops.
        Simplify the graph for infinite and zero-iteration loops.
        (make_do_stmt_edges): Remove first argument.
        (make_do_stmt_edges): Remove first argument.
        Simplify the graph for infinite and one-iteration loops.
        Simplify the graph for infinite and one-iteration loops.
        (make_if_stmt_edges): Remove first argument.
        (make_if_stmt_edges): Remove first argument.
        Simplify the graph for always-true and always-false conditionals.
        Simplify the graph for always-true and always-false conditionals.
        (make_goto_stmt_edges): Remove first argument.
        (make_goto_stmt_edges): Remove first argument.
        (make_break_stmt_edges): Remove first argument.
        (make_break_stmt_edges): Remove first argument.
        (make_continue_stmt_edges): Remove first argument.
        (make_continue_stmt_edges): Remove first argument.
        (make_return_stmt_edges): Remove.
        (make_return_stmt_edges): Remove.
        (tree_cleanup_cfg): New function.
        (tree_cleanup_cfg): New function.
        (delete_unreachable_blocks): Do not react to -Wunreachable-code.
        (delete_unreachable_blocks): Do not react to -Wunreachable-code.
        Write to dump file blocks that have been removed.
        Write to dump file blocks that have been removed.
        Call remove_edge.
        Call remove_edge.
        (is_ctrl_altering_stmt): If the statement contains a call to a
        (is_ctrl_altering_stmt): If the statement contains a call to a
        non-returning function, return 1.
        non-returning function, return 1.
        (delete_cfg): Call remove_bb_ann.  Also remove annotations for
        (delete_cfg): Call remove_bb_ann.  Also remove annotations for
        ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
        (latch_block): Use WHILE_COND_BB instead of END_WHILE_BB.
        (latch_block): Use WHILE_COND_BB instead of END_WHILE_BB.
        (insert_stmt_tree_before): Use cfg_dump_file instead of dump_file.
        (insert_stmt_tree_before): Use cfg_dump_file instead of dump_file.
        (insert_before_ctrl_stmt): Ditto.
        (insert_before_ctrl_stmt): Ditto.
        (insert_before_normal_stmt): Ditto.
        (insert_before_normal_stmt): Ditto.
        (insert_stmt_tree_after): Ditto.
        (insert_stmt_tree_after): Ditto.
        (insert_after_ctrl_stmt): Ditto.
        (insert_after_ctrl_stmt): Ditto.
        (insert_after_normal_stmt): Ditto.
        (insert_after_normal_stmt): Ditto.
        (replace_expr_in_tree): Ditto.
        (replace_expr_in_tree): Ditto.
        (insert_bb_before): Ditto.
        (insert_bb_before): Ditto.
        * tree-dfa.c (tree_find_varrefs): Call find_refs_in_expr when the
        * tree-dfa.c (tree_find_varrefs): Call find_refs_in_expr when the
        tree is not a statement.
        tree is not a statement.
        (find_refs_in_stmt): Update comments.
        (find_refs_in_stmt): Update comments.
        Do not deal with FOR_STMT and DO_STMT trees separately.
        Do not deal with FOR_STMT and DO_STMT trees separately.
        When processing VAR_DECLs, call find_refs_in_expr with the
        When processing VAR_DECLs, call find_refs_in_expr with the
        declaration, not its initial value.
        declaration, not its initial value.
        (find_refs_in_expr): When processing COMPONENT_REFs and ARRAY_REFs,
        (find_refs_in_expr): When processing COMPONENT_REFs and ARRAY_REFs,
        recurse using the same reference type that was given by the
        recurse using the same reference type that was given by the
        original caller.
        original caller.
        (create_varref): Insert new PHI terms at the beginning of the
        (create_varref): Insert new PHI terms at the beginning of the
        BB_REFS array, not the end.
        BB_REFS array, not the end.
        * tree-flow.h (struct for_header_blocks): Declare.
        * tree-flow.h (struct for_header_blocks): Declare.
        (union header_blocks): Declare.
        (union header_blocks): Declare.
        (struct bb_ann_def): Add new field 'loop_hdr'.
        (struct bb_ann_def): Add new field 'loop_hdr'.
        (BB_ANN): Re-define so that it can be used as an lvalue.
        (BB_ANN): Re-define so that it can be used as an lvalue.
        (BB_PARENT): Ditto.
        (BB_PARENT): Ditto.
        (BB_REFS): Ditto.
        (BB_REFS): Ditto.
        (BB_PREV_CHAIN): Ditto.
        (BB_PREV_CHAIN): Ditto.
        (BB_BINDING_SCOPE): Ditto.
        (BB_BINDING_SCOPE): Ditto.
        (BB_LOOP_HDR): Define.
        (BB_LOOP_HDR): Define.
        (FOR_INIT_STMT_BB): Redefine using BB_LOOP_HDR.
        (FOR_INIT_STMT_BB): Redefine using BB_LOOP_HDR.
        (FOR_COND_BB): Ditto.
        (FOR_COND_BB): Ditto.
        (FOR_EXPR_BB): Ditto.
        (FOR_EXPR_BB): Ditto.
        (DO_COND_BB): Ditto.
        (DO_COND_BB): Ditto.
        (END_WHILE_BB): New name for WHILE_COND_BB.
        (END_WHILE_BB): New name for WHILE_COND_BB.
        (tree_warn_uninitialized): Declare.
        (tree_warn_uninitialized): Declare.
        (tree_cleanup_cfg): Declare.
        (tree_cleanup_cfg): Declare.
        (tree_split_bb): Declare.
        (tree_split_bb): Declare.
        * tree-optimize.c: Include flags.h.
        * tree-optimize.c: Include flags.h.
        (init_tree_flow): New function.
        (init_tree_flow): New function.
        (optimize_tree): Call build_tree_ssa instead of building SSA
        (optimize_tree): Call build_tree_ssa instead of building SSA
        in-place.
        in-place.
        (build_tree_ssa): New function.
        (build_tree_ssa): New function.
        * tree-optimize.h (build_tree_ssa): Declare.
        * tree-optimize.h (build_tree_ssa): Declare.
        * tree-ssa.c: Don't include toplev.h
        * tree-ssa.c: Don't include toplev.h
        (tree_warn_uninitialized): Define.
        (tree_warn_uninitialized): Define.
        (tree_compute_rdefs): Do not call is_upward_exposed.  Instead
        (tree_compute_rdefs): Do not call is_upward_exposed.  Instead
        traverse all the uses of each variable and warn if the use is
        traverse all the uses of each variable and warn if the use is
        reached by the ghost definition.
        reached by the ghost definition.
2001-10-10  Graham Stott  
2001-10-10  Graham Stott  
        * tree-cfg.c (create_bb): Add new binding_scope parameter which allows
        * tree-cfg.c (create_bb): Add new binding_scope parameter which allows
        the binding scope either to be explicitly specified if non-zero.
        the binding scope either to be explicitly specified if non-zero.
        (make_blocks): Update call to create_bb.
        (make_blocks): Update call to create_bb.
        (make_for_stmt_blocks): Ditto.
        (make_for_stmt_blocks): Ditto.
        (make_while_stmt_blocks): Ditto.
        (make_while_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (make_if_stmt_blocks): Ditto.
        (make_if_stmt_blocks): Ditto.
        (make_switch_stmt_blocks): Ditto.
        (make_switch_stmt_blocks): Ditto.
        (create_maximal_bb): Ditto.
        (create_maximal_bb): Ditto.
        (make_edges): If a statement expression is in the last basic
        (make_edges): If a statement expression is in the last basic
        block create an edge to EXIT_BLOCK_PTR and not the next block.
        block create an edge to EXIT_BLOCK_PTR and not the next block.
        (insert_before_normal_stmt): Pass the appropriate binding scope to
        (insert_before_normal_stmt): Pass the appropriate binding scope to
        create_bb.
        create_bb.
2001-10-01  Graham Stott  
2001-10-01  Graham Stott  
            Diego Novillo  
            Diego Novillo  
        * tree-optimize.c (optimize_tree): Early return if the program has
        * tree-optimize.c (optimize_tree): Early return if the program has
        errors.
        errors.
2001-09-30  Diego Novillo  
2001-09-30  Diego Novillo  
        * tree-optimize.c (optimize_tree): Compute reaching definitions
        * tree-optimize.c (optimize_tree): Compute reaching definitions
        after building SSA.
        after building SSA.
2001-09-30  Diego Novillo  
2001-09-30  Diego Novillo  
        * tree-cfg.c (insert_after_ctrl_stmt): Remove unused argument.
        * tree-cfg.c (insert_after_ctrl_stmt): Remove unused argument.
        (make_blocks): Pop top element from scope binding stack when an end
        (make_blocks): Pop top element from scope binding stack when an end
        of scope statement is found.
        of scope statement is found.
        (create_bb): Remove code for popping top element from scope binding
        (create_bb): Remove code for popping top element from scope binding
        stack.
        stack.
        Do not push basic block 0 to initialize scope binding stack.
        Do not push basic block 0 to initialize scope binding stack.
        (insert_stmt_tree_after): Remove unused argument from call to
        (insert_stmt_tree_after): Remove unused argument from call to
        insert_after_ctrl_stmt.
        insert_after_ctrl_stmt.
        (tree_dump_bb): Dump BB_BINDING_SCOPE if defined.
        (tree_dump_bb): Dump BB_BINDING_SCOPE if defined.
        * doc/invoke.texi: Document debugging option -ftree-dump-ssa-rdefs.
        * doc/invoke.texi: Document debugging option -ftree-dump-ssa-rdefs.
2001-09-29  Diego Novillo  
2001-09-29  Diego Novillo  
        * Makefile.in (tree-ssa.o): Update dependencies.
        * Makefile.in (tree-ssa.o): Update dependencies.
        (tree-cfg.o): Ditto.
        (tree-cfg.o): Ditto.
        (tree-optimize.o): Ditto.
        (tree-optimize.o): Ditto.
        * basic-block.h (BB_CONTROL_EXPR): Define.
        * basic-block.h (BB_CONTROL_EXPR): Define.
        (BB_CONTROL_ENTRY): Define.
        (BB_CONTROL_ENTRY): Define.
        * c-common.h (TDF_RDEFS): Define.
        * c-common.h (TDF_RDEFS): Define.
        * c-dump.c (dump_option_value_in): Add entry for TDF_RDEFS.
        * c-dump.c (dump_option_value_in): Add entry for TDF_RDEFS.
        * tree-cfg.c: Include flags.h and c-tree.h
        * tree-cfg.c: Include flags.h and c-tree.h
        (binding_stack): New local variable.
        (binding_stack): New local variable.
        (delete_block): Rename to delete_bb.
        (delete_block): Rename to delete_bb.
        (tree_find_basic_blocks): Initialize varray 'binding_stack'.
        (tree_find_basic_blocks): Initialize varray 'binding_stack'.
        Call make_blocks with an additional argument.
        Call make_blocks with an additional argument.
        Adjust size of varray 'basic_block_info' after building CFG.
        Adjust size of varray 'basic_block_info' after building CFG.
        (make_blocks): Add new argument prev_chain_p.
        (make_blocks): Add new argument prev_chain_p.
        Update all callers and callees.
        Update all callers and callees.
        Create sub-graphs for statement-expressions.
        Create sub-graphs for statement-expressions.
        Update prev_chain_p when accessing the next tree in the chain.
        Update prev_chain_p when accessing the next tree in the chain.
        (make_for_stmt_blocks): Add new argument prev_chain_p.
        (make_for_stmt_blocks): Add new argument prev_chain_p.
        Update all callers and callees.
        Update all callers and callees.
        Update flags for control header blocks with BB_CONTROL_ENTRY and/or
        Update flags for control header blocks with BB_CONTROL_ENTRY and/or
        BB_CONTROL_EXPR.
        BB_CONTROL_EXPR.
        (make_while_stmt_blocks): Ditto.
        (make_while_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (make_do_stmt_blocks): Ditto.
        (make_if_stmt_blocks): Ditto.
        (make_if_stmt_blocks): Ditto.
        (make_switch_stmt_blocks): Ditto.
        (make_switch_stmt_blocks): Ditto.
        (create_maximal_bb): Add new argument prev_chain_p.
        (create_maximal_bb): Add new argument prev_chain_p.
        Update all callers and callees.
        Update all callers and callees.
        (create_bb): Add new argument prev_chain_p.
        (create_bb): Add new argument prev_chain_p.
        Push basic block 0 the first time into the binding scope stack.
        Push basic block 0 the first time into the binding scope stack.
        Associate the new basic block to the binding scope at the top of
        Associate the new basic block to the binding scope at the top of
        the binding stack.
        the binding stack.
        Push new binding scopes when a SCOPE_BEGIN statement is found.
        Push new binding scopes when a SCOPE_BEGIN statement is found.
        Pop the top binding scope when a SCOPE_END statement is found.
        Pop the top binding scope when a SCOPE_END statement is found.
        (make_edges): Handle statement expressions.
        (make_edges): Handle statement expressions.
        Handle case labels preceded by scope statements in switch
        Handle case labels preceded by scope statements in switch
        statements.
        statements.
        (make_for_stmt_edges): Use FOR_INIT_STMT_BB, FOR_COND_BB and
        (make_for_stmt_edges): Use FOR_INIT_STMT_BB, FOR_COND_BB and
        FOR_EXPR_BB to access the header basic blocks.
        FOR_EXPR_BB to access the header basic blocks.
        (delete_unreachable_blocks): Call delete_bb instead of
        (delete_unreachable_blocks): Call delete_bb instead of
        delete_block.
        delete_block.
        (delete_block): Rename to delete_bb.
        (delete_block): Rename to delete_bb.
        (block_invalidates_loop): Use data references to find calls to
        (block_invalidates_loop): Use data references to find calls to
        non-pure functions.
        non-pure functions.
        (is_ctrl_stmt): Reformat.
        (is_ctrl_stmt): Reformat.
        (loop_body): New function.
        (loop_body): New function.
        (set_loop_body): New function.
        (set_loop_body): New function.
        (stmt_starts_bb_p): Statement expression trees also start a new
        (stmt_starts_bb_p): Statement expression trees also start a new
        basic block.
        basic block.
        (delete_cfg): Call VARRAY_FREE to delete all the references in each
        (delete_cfg): Call VARRAY_FREE to delete all the references in each
        basic block.
        basic block.
        (latch_block): Use FOR_EXPR_BB, WHILE_COND_BB and DO_COND_BB to
        (latch_block): Use FOR_EXPR_BB, WHILE_COND_BB and DO_COND_BB to
        find out the latch block for the loop.
        find out the latch block for the loop.
        (last_exec_stmt): New function.
        (last_exec_stmt): New function.
        (is_exec_stmt): Scope statements that begin a scope are also
        (is_exec_stmt): Scope statements that begin a scope are also
        considered executables.
        considered executables.
        (is_statement_expression): New function.
        (is_statement_expression): New function.
        (first_non_decl_stmt): New function.
        (first_non_decl_stmt): New function.
        (first_decl_stmt): New function.
        (first_decl_stmt): New function.
        (first_non_label_in_bb): New function.
        (first_non_label_in_bb): New function.
        (insert_stmt_tree_before): New function.
        (insert_stmt_tree_before): New function.
        (insert_before_ctrl_stmt): New function.
        (insert_before_ctrl_stmt): New function.
        (insert_before_normal_stmt): New function.
        (insert_before_normal_stmt): New function.
        (insert_stmt_tree_after): New function.
        (insert_stmt_tree_after): New function.
        (insert_after_ctrl_stmt): New function.
        (insert_after_ctrl_stmt): New function.
        (insert_after_normal_stmt): New function.
        (insert_after_normal_stmt): New function.
        (insert_after_loop_body): New function.
        (insert_after_loop_body): New function.
        (replace_expr_in_tree): New function.
        (replace_expr_in_tree): New function.
        (find_expr_in_tree): New function.
        (find_expr_in_tree): New function.
        (insert_bb_before): New function.
        (insert_bb_before): New function.
        (tree_dump_bb): Display the contents of BB_PREV_CHAIN_P.
        (tree_dump_bb): Display the contents of BB_PREV_CHAIN_P.
        * tree-dfa.c (tree_find_varrefs): Use accessor macros for array
        * tree-dfa.c (tree_find_varrefs): Use accessor macros for array
        'referenced_symbols'.
        'referenced_symbols'.
        (find_refs_in_stmt): Do not process error_mark_node trees.
        (find_refs_in_stmt): Do not process error_mark_node trees.
        Handle statement-expression nodes as any other statement tree.
        Handle statement-expression nodes as any other statement tree.
        Do not call find_refs_in_stmt_expr.
        Do not call find_refs_in_stmt_expr.
        (find_refs_in_stmt_expr): Remove.
        (find_refs_in_stmt_expr): Remove.
        (add_ref_to_sym): Remove.
        (add_ref_to_sym): Remove.
        (add_ref_to_bb): Remove.
        (add_ref_to_bb): Remove.
        (find_refs_in_expr): Do not process error_mark_node trees.
        (find_refs_in_expr): Do not process error_mark_node trees.
        ADDR_EXPR trees are not variable references except if used in a
        ADDR_EXPR trees are not variable references except if used in a
        CALL_EXPR node.
        CALL_EXPR node.
        Handle EXPR_WITH_FILE_LOCATION nodes.
        Handle EXPR_WITH_FILE_LOCATION nodes.
        (create_varref): Remove variable 'is_new'.
        (create_varref): Remove variable 'is_new'.
        Initialize data-flow arrays VARDEF_IMM_USES, VARDEF_RUSES,
        Initialize data-flow arrays VARDEF_IMM_USES, VARDEF_RUSES,
        VARDEF_PHI_CHAIN and VARUSE_RDEFS.
        VARDEF_PHI_CHAIN and VARUSE_RDEFS.
        Do not call add_ref_to_sym and add_ref_to_bb.
        Do not call add_ref_to_sym and add_ref_to_bb.
        (add_ref_symbol): Use accessor macros for varray
        (add_ref_symbol): Use accessor macros for varray
        'referenced_symbols'.
        'referenced_symbols'.
        (function_may_recurse_p): New function.
        (function_may_recurse_p): New function.
        (get_fcalls): New function.
        (get_fcalls): New function.
        (find_declaration): New function.
        (find_declaration): New function.
        (dump_varref): Handle NULL values of VARREF_EXPR.
        (dump_varref): Handle NULL values of VARREF_EXPR.
        Use VARDEF_PHI_CHAIN instead of VARPHI_CHAIN.
        Use VARDEF_PHI_CHAIN instead of VARPHI_CHAIN.
        (dump_varref_list): Check if the list is NULL before traversing it.
        (dump_varref_list): Check if the list is NULL before traversing it.
        * tree-flow.h (struct vardef): Add fields 'ruses', 'marked' and
        * tree-flow.h (struct vardef): Add fields 'ruses', 'marked' and
        'phi_chain'.
        'phi_chain'.
        (VARDEF_RUSES): Define.
        (VARDEF_RUSES): Define.
        (VARDEF_MARKED): Define.
        (VARDEF_MARKED): Define.
        (VARDEF_PHI_CHAIN): Define.
        (VARDEF_PHI_CHAIN): Define.
        (VARPHI_CHAIN): Remove.
        (VARPHI_CHAIN): Remove.
        (struct varphi): Remove.
        (struct varphi): Remove.
        (struct varuse): Add field 'rdefs'.
        (struct varuse): Add field 'rdefs'.
        (VARUSE_RDEFS): Define.
        (VARUSE_RDEFS): Define.
        (union varref_def): Remove field 'phi'.
        (union varref_def): Remove field 'phi'.
        (IS_GHOST_DEF): Define.
        (IS_GHOST_DEF): Define.
        (IS_ARTIFICIAL_REF): Define.
        (IS_ARTIFICIAL_REF): Define.
        (struct bb_ann_def): Add fields 'prev_chain_p' and 'binding_scope'.
        (struct bb_ann_def): Add fields 'prev_chain_p' and 'binding_scope'.
        (BB_PREV_CHAIN_P): Define.
        (BB_PREV_CHAIN_P): Define.
        (BB_BINDING_SCOPE): Define.
        (BB_BINDING_SCOPE): Define.
        (FOR_INIT_STMT_BB): Define.
        (FOR_INIT_STMT_BB): Define.
        (FOR_COND_BB): Define.
        (FOR_COND_BB): Define.
        (FOR_EXPR_BB): Define.
        (FOR_EXPR_BB): Define.
        (WHILE_COND_BB): Define.
        (WHILE_COND_BB): Define.
        (DO_COND_BB): Define.
        (DO_COND_BB): Define.
        (IF_COND_BB): Define.
        (IF_COND_BB): Define.
        (CASE_COND_BB): Define.
        (CASE_COND_BB): Define.
        (NREF_SYMBOLS): Define.
        (NREF_SYMBOLS): Define.
        (REF_SYMBOL): Define.
        (REF_SYMBOL): Define.
        (ADD_REF_SYMBOL): Define.
        (ADD_REF_SYMBOL): Define.
        (FCALL_NON_PURE): Define.
        (FCALL_NON_PURE): Define.
        (FCALL_PURE): Define.
        (FCALL_PURE): Define.
        (FCALL_BUILT_IN): Define.
        (FCALL_BUILT_IN): Define.
        (loop_body): Declare.
        (loop_body): Declare.
        (set_loop_body): Declare.
        (set_loop_body): Declare.
        (last_exec_stmt): Declare.
        (last_exec_stmt): Declare.
        (is_statement_expression): Declare.
        (is_statement_expression): Declare.
        (first_non_decl_stmt): Declare.
        (first_non_decl_stmt): Declare.
        (first_decl_stmt): Declare.
        (first_decl_stmt): Declare.
        (first_non_label_in_bb): Declare.
        (first_non_label_in_bb): Declare.
        (insert_stmt_tree_before): Declare.
        (insert_stmt_tree_before): Declare.
        (insert_stmt_tree_after): Declare.
        (insert_stmt_tree_after): Declare.
        (replace_expr_in_tree): Declare.
        (replace_expr_in_tree): Declare.
        (find_expr_in_tree): Declare.
        (find_expr_in_tree): Declare.
        (insert_bb_before): Declare.
        (insert_bb_before): Declare.
        (function_may_recurse_p): Declare.
        (function_may_recurse_p): Declare.
        (get_fcalls): Declare.
        (get_fcalls): Declare.
        (find_declaration): Declare.
        (find_declaration): Declare.
        (tree_compute_rdefs): Declare.
        (tree_compute_rdefs): Declare.
        (analyze_rdefs): Declare.
        (analyze_rdefs): Declare.
        (is_upward_exposed): Declare.
        (is_upward_exposed): Declare.
        * tree-optimize.c (optimize_tree): Update name for varray
        * tree-optimize.c (optimize_tree): Update name for varray
        referenced_symbols.
        referenced_symbols.
        Free varray referenced_symbols and call delete_ssa on exit.
        Free varray referenced_symbols and call delete_ssa on exit.
        * tree-ssa.c: Include flags.h, diagnostic.h and toplev.h.
        * tree-ssa.c: Include flags.h, diagnostic.h and toplev.h.
        (tree_build_ssa): Create ghost definitions before building FUD
        (tree_build_ssa): Create ghost definitions before building FUD
        chains.
        chains.
        (insert_phi_terms): Use accessor macros for 'referenced_symbols'.
        (insert_phi_terms): Use accessor macros for 'referenced_symbols'.
        Ignore ghost definitions when placing PHI terms.
        Ignore ghost definitions when placing PHI terms.
        (build_fud_chains): Call get_tree_ann to create an annotation for
        (build_fud_chains): Call get_tree_ann to create an annotation for
        the symbol if it doesn't already have one.
        the symbol if it doesn't already have one.
        (search_fud_chains): Reformat comments.
        (search_fud_chains): Reformat comments.
        Do not initialize varray VARDEF_IMM_USES.
        Do not initialize varray VARDEF_IMM_USES.
        If a successor basic block does not have references, continue on to
        If a successor basic block does not have references, continue on to
        the next one, do not stop.
        the next one, do not stop.
        Do not initialize varray VARDEF_PHI_CHAIN.
        Do not initialize varray VARDEF_PHI_CHAIN.
        (delete_ssa): New function.
        (delete_ssa): New function.
        (delete_refs): New function.
        (delete_refs): New function.
        (tree_compute_rdefs): New function.
        (tree_compute_rdefs): New function.
        (analyze_rdefs): New function.
        (analyze_rdefs): New function.
        (follow_chain): New function.
        (follow_chain): New function.
        (is_upward_exposed): New function.
        (is_upward_exposed): New function.
2001-09-14  Diego Novillo  
2001-09-14  Diego Novillo  
        * tree-cfg.c (tree_find_basic_blocks): Remove call to
        * tree-cfg.c (tree_find_basic_blocks): Remove call to
        mark_critical_edges.
        mark_critical_edges.
        (create_maximal_bb): Do not create annotations for non-executable
        (create_maximal_bb): Do not create annotations for non-executable
        statements.
        statements.
        (map_stmt_to_bb): Rename basic_block_ann with bb_ann.
        (map_stmt_to_bb): Rename basic_block_ann with bb_ann.
        (delete_cfg): Ditto.
        (delete_cfg): Ditto.
        (is_exec_stmt): Reformat.
        (is_exec_stmt): Reformat.
        (create_bb_ann): New function.
        (create_bb_ann): New function.
        * tree-dfa.c (create_node): Remove.
        * tree-dfa.c (create_node): Remove.
        (ref_symbols_list): Remove.
        (ref_symbols_list): Remove.
        (create_tree_ann): Declare.
        (create_tree_ann): Declare.
        (referenced_symbols): Declare.
        (referenced_symbols): Declare.
        (tree_find_varrefs): Replace usage of linked lists with variable
        (tree_find_varrefs): Replace usage of linked lists with variable
        arrays.
        arrays.
        (create_varref): Remove second argument from call to
        (create_varref): Remove second argument from call to
        add_ref_symbol.
        add_ref_symbol.
        Update comments.
        Update comments.
        (add_ref_to_sym): Replace usage of linked lists with variable
        (add_ref_to_sym): Replace usage of linked lists with variable
        arrays.
        arrays.
        Declare static.
        Declare static.
        (add_ref_to_bb): Ditto.
        (add_ref_to_bb): Ditto.
        (add_ref_symbol): Ditto.
        (add_ref_symbol): Ditto.
        (dump_varref_list): Ditto.
        (dump_varref_list): Ditto.
        (debug_varref_list): Ditto.
        (debug_varref_list): Ditto.
        (create_varref_list): Remove.
        (create_varref_list): Remove.
        (push_ref): Remove.
        (push_ref): Remove.
        (create_node): Remove.
        (create_node): Remove.
        (delete_varref_list): Remove.
        (delete_varref_list): Remove.
        (get_tree_ann): Call create_tree_ann if the tree doesn't have an
        (get_tree_ann): Call create_tree_ann if the tree doesn't have an
        annotation already.
        annotation already.
        (create_tree_ann): New function.
        (create_tree_ann): New function.
        * tree-flow.h (varref_list_def): Remove.
        * tree-flow.h (varref_list_def): Remove.
        (vardef): Change type of field 'imm_uses' to 'varray_type'.
        (vardef): Change type of field 'imm_uses' to 'varray_type'.
        (varphi): Change type of field 'phi_chain' to 'varray_type'.
        (varphi): Change type of field 'phi_chain' to 'varray_type'.
        (varref_node_def): Remove.
        (varref_node_def): Remove.
        (varref_node): Remove.
        (varref_node): Remove.
        (VARREF_NODE_ELEM): Remove.
        (VARREF_NODE_ELEM): Remove.
        (VARREF_NODE_NEXT): Remove.
        (VARREF_NODE_NEXT): Remove.
        (VARREF_NODE_PREV): Remove.
        (VARREF_NODE_PREV): Remove.
        (varref_list_def): Remove.
        (varref_list_def): Remove.
        (varref_list): Remove.
        (varref_list): Remove.
        (VARREF_LIST_FIRST): Remove.
        (VARREF_LIST_FIRST): Remove.
        (VARREF_LIST_LAST): Remove.
        (VARREF_LIST_LAST): Remove.
        (tree_ann_def): Change type of field 'refs' to 'varray_type'.
        (tree_ann_def): Change type of field 'refs' to 'varray_type'.
        (basic_block_ann_def): Rename to 'bb_ann_def'.
        (basic_block_ann_def): Rename to 'bb_ann_def'.
        Change type of field 'refs' to 'varray_type'.
        Change type of field 'refs' to 'varray_type'.
        (basic_block_ann): Rename to 'bb_ann'.
        (basic_block_ann): Rename to 'bb_ann'.
        (ref_symbols_list): Remove.
        (ref_symbols_list): Remove.
        (referenced_symbols): Declare.
        (referenced_symbols): Declare.
        (add_ref_to_sym): Remove.
        (add_ref_to_sym): Remove.
        (add_ref_to_bb): Remove.
        (add_ref_to_bb): Remove.
        (add_ref_symbol): Remove.
        (add_ref_symbol): Remove.
        (remove_ann_from_sym): Remove.
        (remove_ann_from_sym): Remove.
        (create_varref_list): Remove.
        (create_varref_list): Remove.
        (push_ref): Remove.
        (push_ref): Remove.
        (delete_varref_list): Remove.
        (delete_varref_list): Remove.
        (debug_varref_list): Update argument type to be 'varray_type'.
        (debug_varref_list): Update argument type to be 'varray_type'.
        (dump_varref_list): Ditto.
        (dump_varref_list): Ditto.
        * tree-optimize.c: Include 'basic-block.h'.
        * tree-optimize.c: Include 'basic-block.h'.
        (optimize_tree): Replace references to 'ref_symbols_list' with
        (optimize_tree): Replace references to 'ref_symbols_list' with
        'referenced_symbols'.
        'referenced_symbols'.
        Remove call to delete_varref_list.
        Remove call to delete_varref_list.
        * tree-ssa.c (insert_phi_terms): Rename 'work_list' to
        * tree-ssa.c (insert_phi_terms): Rename 'work_list' to
        'work_stack'.
        'work_stack'.
        Use VARRAY_PUSH and VARRAY_TOP to access 'work_stack' instead of
        Use VARRAY_PUSH and VARRAY_TOP to access 'work_stack' instead of
        maintaining the stack pointer in 'work_list_top'.
        maintaining the stack pointer in 'work_list_top'.
        Remove code to grow 'work_stack'.
        Remove code to grow 'work_stack'.
        Remove references to 'work_list_top'.
        Remove references to 'work_list_top'.
        Replace references to 'ref_symbols_list' with 'referenced_symbols'.
        Replace references to 'ref_symbols_list' with 'referenced_symbols'.
        (build_fud_chains): Replace references to 'ref_symbols_list' with
        (build_fud_chains): Replace references to 'ref_symbols_list' with
        'referenced_symbols'.
        'referenced_symbols'.
        (search_fud_chains): If there are no variable references in the
        (search_fud_chains): If there are no variable references in the
        basic block, return early.
        basic block, return early.
        Change usage of linked lists with variable arrays.
        Change usage of linked lists with variable arrays.
2001-09-07  Diego Novillo  
2001-09-07  Diego Novillo  
        * tree-cfg.c (tree_find_basic_blocks): Document how to traverse
        * tree-cfg.c (tree_find_basic_blocks): Document how to traverse
        trees inside a basic block.
        trees inside a basic block.
        (make_for_stmt_blocks): Make sure that there is always a block for
        (make_for_stmt_blocks): Make sure that there is always a block for
        FOR_EXPR, even if the loop does not have an expression.
        FOR_EXPR, even if the loop does not have an expression.
        Create a separate block for FOR_INIT_STMT.
        Create a separate block for FOR_INIT_STMT.
        (make_while_stmt_blocks): Always create an "end_while" block.
        (make_while_stmt_blocks): Always create an "end_while" block.
        (make_if_stmt_blocks): Do not store IF_COND in the header block of
        (make_if_stmt_blocks): Do not store IF_COND in the header block of
        an IF statement.
        an IF statement.
        (make_for_stmt_edges): Create an edge from the block header to the
        (make_for_stmt_edges): Create an edge from the block header to the
        block for FOR_INIT_STMT.
        block for FOR_INIT_STMT.
        Determine the first block of the loop body calling BB_FOR_STMT on
        Determine the first block of the loop body calling BB_FOR_STMT on
        the first executable statement in the body.
        the first executable statement in the body.
        Remove the special case for missing FOR_EXPR trees.
        Remove the special case for missing FOR_EXPR trees.
        (make_while_stmt_edges): Create a back edge from the end_while
        (make_while_stmt_edges): Create a back edge from the end_while
        block to the header block.
        block to the header block.
        Determine the first block of the loop body calling BB_FOR_STMT on
        Determine the first block of the loop body calling BB_FOR_STMT on
        the first executable statement in the body.
        the first executable statement in the body.
        (make_do_stmt_edges): Determine the first block of the loop body
        (make_do_stmt_edges): Determine the first block of the loop body
        calling BB_FOR_STMT on the first executable statement in the body.
        calling BB_FOR_STMT on the first executable statement in the body.
        (condition_block): Rename to latch_block.  Return the latch
        (condition_block): Rename to latch_block.  Return the latch
        block for the given loop header.
        block for the given loop header.
        (make_continue_stmt_edges): Rename condition_block to
        (make_continue_stmt_edges): Rename condition_block to
        latch_block.
        latch_block.
        (successor_block): Ditto.
        (successor_block): Ditto.
        * tree-flow.h (condition_block): Rename to latch_block.
        * tree-flow.h (condition_block): Rename to latch_block.
2001-09-06  Diego Novillo  
2001-09-06  Diego Novillo  
        * tree-dfa.c (tree_find_varrefs): Use TDF_REFS instead of TDF_VARREF.
        * tree-dfa.c (tree_find_varrefs): Use TDF_REFS instead of TDF_VARREF.
        * tree-flow.h (TDF_VARREF): Remove.
        * tree-flow.h (TDF_VARREF): Remove.
2001-09-04  Nathan Sidwell  
2001-09-04  Nathan Sidwell  
        * c-common.h (tree_dump_index): Add more comments.
        * c-common.h (tree_dump_index): Add more comments.
        (TDF_REFS): New dump flag.
        (TDF_REFS): New dump flag.
        * c-dump.c (dump_files): Name flags `tree' rather than `ast'.
        * c-dump.c (dump_files): Name flags `tree' rather than `ast'.
        (dump_option_value_info): New struct.
        (dump_option_value_info): New struct.
        (dump_options): New array.
        (dump_options): New array.
        (dump_switch_p): Parse switch options symbolically.
        (dump_switch_p): Parse switch options symbolically.
        * doc/invoke.texi (-fdump-ast): Rename to ...
        * doc/invoke.texi (-fdump-ast): Rename to ...
        (-fdump-tree): ... here. Document options are symbolic, and
        (-fdump-tree): ... here. Document options are symbolic, and
        not all are applicable. Combine ssa related flags into the other
        not all are applicable. Combine ssa related flags into the other
        tree dump flags.
        tree dump flags.
2001-08-27  Diego Novillo  
2001-08-27  Diego Novillo  
        * Makefile.in (tree-ssa.o): Update dependencies.
        * Makefile.in (tree-ssa.o): Update dependencies.
        (tree-cfg.o): Ditto.
        (tree-cfg.o): Ditto.
        (tree-dfa.o): Ditto.
        (tree-dfa.o): Ditto.
        (tree-optimize.o): Ditto.
        (tree-optimize.o): Ditto.
2001-08-26  Diego Novillo  
2001-08-26  Diego Novillo  
        * Makefile.in (C_AND_OBJC_OBJS): Replace tree-opt.o with
        * Makefile.in (C_AND_OBJC_OBJS): Replace tree-opt.o with
        tree-optimize.o.
        tree-optimize.o.
        (c-decl.o): Ditto.
        (c-decl.o): Ditto.
        (tree-ssa.o): Ditto.
        (tree-ssa.o): Ditto.
        (tree-cfg.o): Ditto.
        (tree-cfg.o): Ditto.
        (tree-dfa.o): Ditto.
        (tree-dfa.o): Ditto.
        (tree-opt.o): Ditto.
        (tree-opt.o): Ditto.
        * c-decl.c: Replace tree-opt.h with tree-optimize.h.
        * c-decl.c: Replace tree-opt.h with tree-optimize.h.
        (c_expand_body): Remove call to init_tree_opt.
        (c_expand_body): Remove call to init_tree_opt.
        * flow.c (flow_loop_dump): Do not display insn UIDs if this is not
        * flow.c (flow_loop_dump): Do not display insn UIDs if this is not
        an RTL basic block.
        an RTL basic block.
        * tree-cfg.c: Replace tree-opt.h with tree-optimize.h.
        * tree-cfg.c: Replace tree-opt.h with tree-optimize.h.
        (block_invalidates_loop): New local function.
        (block_invalidates_loop): New local function.
        (validate_loops): New function.
        (validate_loops): New function.
        (tree_dump_bb): Display the loop depth of the block.
        (tree_dump_bb): Display the loop depth of the block.
        * tree-dfa.c: Replace tree-opt.h with tree-optimize.h.
        * tree-dfa.c: Replace tree-opt.h with tree-optimize.h.
        * tree-flow.h (validate_loops): Declare.
        * tree-flow.h (validate_loops): Declare.
        * tree-opt.c: Rename to tree-optimize.c.
        * tree-opt.c: Rename to tree-optimize.c.
        * tree-opt.h: Rename to tree-optimize.h.
        * tree-opt.h: Rename to tree-optimize.h.
        * tree-optimize.c: Rename from tree-opt.c.
        * tree-optimize.c: Rename from tree-opt.c.
        * tree-optimize.h: Rename from tree-opt.h.
        * tree-optimize.h: Rename from tree-opt.h.
        * tree-ssa.c: Replace tree-opt.h with tree-optimize.h.
        * tree-ssa.c: Replace tree-opt.h with tree-optimize.h.
        (tree_build_ssa): Call tree_dump_bb instead of tree_debug_bb.
        (tree_build_ssa): Call tree_dump_bb instead of tree_debug_bb.
        * cp/Make-lang.in: Replace tree-opt.h with tree-optimize.h.
        * cp/Make-lang.in: Replace tree-opt.h with tree-optimize.h.
2001-08-20  Diego Novillo  
2001-08-20  Diego Novillo  
        * basic-block.h (basic_block): Remove field 'reachable'.
        * basic-block.h (basic_block): Remove field 'reachable'.
        Add new field 'flags'.
        Add new field 'flags'.
        (BB_REACHABLE): Define.
        (BB_REACHABLE): Define.
        * c-common.h (tree_dump_index): Add TDI_cfg, TDI_dot, TDI_ssa.
        * c-common.h (tree_dump_index): Add TDI_cfg, TDI_dot, TDI_ssa.
        * c-decl.c (c_decode_option): Skip '-f' prefix before calling
        * c-decl.c (c_decode_option): Skip '-f' prefix before calling
        dump_switch_p.
        dump_switch_p.
        * c-dump.c (dump_file_info): Add entries for -fdump-tree-cfg,
        * c-dump.c (dump_file_info): Add entries for -fdump-tree-cfg,
        -fdump-tree-graphviz and -fdump-tree-ssa.
        -fdump-tree-graphviz and -fdump-tree-ssa.
        * flow.c (find_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
        * flow.c (find_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
        instead of bb->reachable.
        instead of bb->reachable.
        (delete_unreachable_blocks): Ditto.
        (delete_unreachable_blocks): Ditto.
        * tree-cfg.c: Minor formatting changes throughout the file.
        * tree-cfg.c: Minor formatting changes throughout the file.
        (DEBUG_TREE_FLOW): Remove.
        (DEBUG_TREE_FLOW): Remove.
        (debug_tree_flow): Remove.
        (debug_tree_flow): Remove.
        (cfg_dump_file): New local variable.
        (cfg_dump_file): New local variable.
        (dot_dump_file): New local variable.
        (dot_dump_file): New local variable.
        (cfg_dump_flags): New local variable.
        (cfg_dump_flags): New local variable.
        (dot_dump_flags): New local variable.
        (dot_dump_flags): New local variable.
        (tree_find_basic_blocks): Remove unused arguments.
        (tree_find_basic_blocks): Remove unused arguments.
        Add code to react to -fdump-tree-cfg and -fdump-tree-graphviz.
        Add code to react to -fdump-tree-cfg and -fdump-tree-graphviz.
        Remove uses of DEBUG_TREE_FLOW.
        Remove uses of DEBUG_TREE_FLOW.
        (delete_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
        (delete_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
        instead of bb->reachable.
        instead of bb->reachable.
        (tree_dump_cfg): New.
        (tree_dump_cfg): New.
        (tree_debug_cfg): Call tree_dump_cfg().
        (tree_debug_cfg): Call tree_dump_cfg().
        (tree_cfg2dot): Accept a FILE pointer instead of a file name as
        (tree_cfg2dot): Accept a FILE pointer instead of a file name as
        argument.
        argument.
        Name the graph with the current function name.
        Name the graph with the current function name.
        * tree-dfa.c: Minor formatting changes throughout the file.
        * tree-dfa.c: Minor formatting changes throughout the file.
        (DEBUG_TREE_DFA): Remove.
        (DEBUG_TREE_DFA): Remove.
        (debug_tree_dfa): Remove.
        (debug_tree_dfa): Remove.
        (dump_file): New local variable.
        (dump_file): New local variable.
        (dump_flags): New local variable.
        (dump_flags): New local variable.
        (tree_find_varrefs): Add code to react to -fdump-tree-ssa.
        (tree_find_varrefs): Add code to react to -fdump-tree-ssa.
        Remove uses of DEBUG_TREE_DFA.
        Remove uses of DEBUG_TREE_DFA.
        (find_refs_in_expr): Remove uses of DEBUG_TREE_DFA.
        (find_refs_in_expr): Remove uses of DEBUG_TREE_DFA.
        (create_varref): Replace VARREF_BLOCK with VARREF_BB.
        (create_varref): Replace VARREF_BLOCK with VARREF_BB.
        * tree-flow.h: Minor formatting changes throughout the file.
        * tree-flow.h: Minor formatting changes throughout the file.
        (VARREF_BLOCK): Rename to VARREF_BB.
        (VARREF_BLOCK): Rename to VARREF_BB.
        (VARREF_NEXT): Remove.
        (VARREF_NEXT): Remove.
        (VARREF_PREV): Remove.
        (VARREF_PREV): Remove.
        (TDF_VARREF): Define.
        (TDF_VARREF): Define.
        (tree_find_basic_blocks): Remove unused arguments.
        (tree_find_basic_blocks): Remove unused arguments.
        (tree_dump_cfg): Declare.
        (tree_dump_cfg): Declare.
        (tree_cfg2dot): Change argument to FILE *.
        (tree_cfg2dot): Change argument to FILE *.
        * tree-opt.c: Minor formatting changes throughout the file.
        * tree-opt.c: Minor formatting changes throughout the file.
        (optimize_tree): Remove unused arguments in call to
        (optimize_tree): Remove unused arguments in call to
        tree_find_basic_blocks().
        tree_find_basic_blocks().
        * tree-opt.h: Ditto.
        * tree-opt.h: Ditto.
        * tree-ssa.c: Minor formatting changes throughout the file.
        * tree-ssa.c: Minor formatting changes throughout the file.
        (DEBUG_TREE_SSA): Remove.
        (DEBUG_TREE_SSA): Remove.
        (debug_tree_ssa): Remove.
        (debug_tree_ssa): Remove.
        (dump_file): New local variable.
        (dump_file): New local variable.
        (dump_flags): New local variable.
        (dump_flags): New local variable.
        (tree_build_ssa): Add code to react to -fdump-tree-ssa.
        (tree_build_ssa): Add code to react to -fdump-tree-ssa.
        Remove uses of DEBUG_TREE_SSA.
        Remove uses of DEBUG_TREE_SSA.
        (insert_phi_terms): Remove uses of DEBUG_TREE_SSA.
        (insert_phi_terms): Remove uses of DEBUG_TREE_SSA.
        * doc/invoke.texi: Add documentation for -fdump-tree-cfg,
        * doc/invoke.texi: Add documentation for -fdump-tree-cfg,
        -fdump-tree-graphviz and -fdump-tree-ssa.
        -fdump-tree-graphviz and -fdump-tree-ssa.
        Replace existing references to -fdump-tree with -fdump-ast.
        Replace existing references to -fdump-tree with -fdump-ast.
2001-08-10  Diego Novillo  
2001-08-10  Diego Novillo  
        * basic-block.h (basic_block): Add new field 'reachable'.
        * basic-block.h (basic_block): Add new field 'reachable'.
        (expunge_block): Declare.
        (expunge_block): Declare.
        * flow.c (ENTRY_BLOCK_PTR): Initialize field 'reachable'.
        * flow.c (ENTRY_BLOCK_PTR): Initialize field 'reachable'.
        (EXIT_BLOCK_PTR): Ditto.
        (EXIT_BLOCK_PTR): Ditto.
        (expunge_block): Remove static declaration.
        (expunge_block): Remove static declaration.
        (cleanup_cfg): Clear bb->aux on every basic block.
        (cleanup_cfg): Clear bb->aux on every basic block.
        (find_unreachable_blocks): Use field 'reachable' when computing
        (find_unreachable_blocks): Use field 'reachable' when computing
        reachability.
        reachability.
        (delete_unreachable_blocks): Use field 'reachable'.
        (delete_unreachable_blocks): Use field 'reachable'.
        * tree-cfg.c: Rename all instance of 'node' with 'block.
        * tree-cfg.c: Rename all instance of 'node' with 'block.
        (get_successor_block): Rename to successor_block.
        (get_successor_block): Rename to successor_block.
        (make_compound_stmt_edges): Remove.
        (make_compound_stmt_edges): Remove.
        (make_switch_stmt_edges): Remove.
        (make_switch_stmt_edges): Remove.
        (delete_unreachable_blocks): New.
        (delete_unreachable_blocks): New.
        (delete_block): New.
        (delete_block): New.
        (make_blocks): Add new argument 'compound_stmt'.  Do not include
        (make_blocks): Add new argument 'compound_stmt'.  Do not include
        COMPOUND_STMT trees in the flowgraph.
        COMPOUND_STMT trees in the flowgraph.
        (make_for_stmt_blocks): Include FOR_INIT_STMT in the entry block of
        (make_for_stmt_blocks): Include FOR_INIT_STMT in the entry block of
        the loop.
        the loop.
        If FOR_COND does not exist, create a tree holding the constant 1.
        If FOR_COND does not exist, create a tree holding the constant 1.
        Add new argument 'compound_stmt'.
        Add new argument 'compound_stmt'.
        (make_while_stmt_blocks): Include WHILE_COND in the entry block of
        (make_while_stmt_blocks): Include WHILE_COND in the entry block of
        the loop.
        the loop.
        Add new argument 'compound_stmt'.
        Add new argument 'compound_stmt'.
        (make_do_stmt_blocks): Add new argument 'compound_stmt'.
        (make_do_stmt_blocks): Add new argument 'compound_stmt'.
        (make_if_stmt_blocks): Add new argument 'compound_stmt'.
        (make_if_stmt_blocks): Add new argument 'compound_stmt'.
        Include IF_COND in the IF header block.
        Include IF_COND in the IF header block.
        (make_switch_stmt_blocks): Add new argument 'compound_stmt'.
        (make_switch_stmt_blocks): Add new argument 'compound_stmt'.
        Include SWITCH_COND in the SWITCH header block.
        Include SWITCH_COND in the SWITCH header block.
        (create_maximal_bb): Remove argument 'is_loop_header'.
        (create_maximal_bb): Remove argument 'is_loop_header'.
        Add new argument 'compound_stmt'.
        Add new argument 'compound_stmt'.
        Update all callers.
        Update all callers.
        Return the newly created basic block instead of its last statement.
        Return the newly created basic block instead of its last statement.
        Update comments.
        Update comments.
        Do not store control flow altering statements in bb->exit_stmt.
        Do not store control flow altering statements in bb->exit_stmt.
        Only add executable statements to the block.
        Only add executable statements to the block.
        Annotate with 'compound_stmt' each tree added to the block.
        Annotate with 'compound_stmt' each tree added to the block.
        (create_bb): Do not update annotation 'is_loop_header'.
        (create_bb): Do not update annotation 'is_loop_header'.
        (make_edges): Remove naive reachability analysis.
        (make_edges): Remove naive reachability analysis.
        When a label node is found, add an edge from the immediately
        When a label node is found, add an edge from the immediately
        enclosing switch statement.
        enclosing switch statement.
        Call delete_unreachable_blocks() after adding all the edges.
        Call delete_unreachable_blocks() after adding all the edges.
        (make_ctrl_stmt_edges): Do not consider COMPOUND_STMT trees.
        (make_ctrl_stmt_edges): Do not consider COMPOUND_STMT trees.
        Do nothing for SWITCH_STMT trees.
        Do nothing for SWITCH_STMT trees.
        (make_exit_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        (make_exit_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        (make_for_stmt_edges): Remove code that added edges for the block
        (make_for_stmt_edges): Remove code that added edges for the block
        holding FOR_INIT_STMT.
        holding FOR_INIT_STMT.
        Update comments.
        Update comments.
        Do not consider the case where FOR_COND is NULL.
        Do not consider the case where FOR_COND is NULL.
        Call first_exec_stmt() to determine if FOR_BODY is empty.
        Call first_exec_stmt() to determine if FOR_BODY is empty.
        Only create an edge from expr_bb to cond_bb if FOR_EXPR is
        Only create an edge from expr_bb to cond_bb if FOR_EXPR is
        non-null.
        non-null.
        (make_while_stmt_edges): Remove code that added edges for the block
        (make_while_stmt_edges): Remove code that added edges for the block
        holding WHILE_COND.
        holding WHILE_COND.
        Update comments.
        Update comments.
        Call first_exec_stmt() to determine if WHILE_BODY is empty.
        Call first_exec_stmt() to determine if WHILE_BODY is empty.
        (make_do_stmt_edges): Call first_exec_stmt() to determine if
        (make_do_stmt_edges): Call first_exec_stmt() to determine if
        DO_BODY is empty.
        DO_BODY is empty.
        (make_if_stmt_edges): Remove code that added edges for the block
        (make_if_stmt_edges): Remove code that added edges for the block
        holding IF_COND.
        holding IF_COND.
        Call first_exec_stmt() to determine if THEN_CLAUSE or ELSE_CLAUSE
        Call first_exec_stmt() to determine if THEN_CLAUSE or ELSE_CLAUSE
        are empty.
        are empty.
        (make_switch_stmt_edges): Remove.
        (make_switch_stmt_edges): Remove.
        (make_goto_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        (make_goto_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        (make_break_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        (make_break_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
        Call switch_parent() and loop_parent() to determine if the
        Call switch_parent() and loop_parent() to determine if the
        statement is inside an appropriate control structure.
        statement is inside an appropriate control structure.
        (make_continue_stmt_edges): Use bb->end_tree instead of
        (make_continue_stmt_edges): Use bb->end_tree instead of
        BB_EXIT_STMT.
        BB_EXIT_STMT.
        (make_return_stmt_edges): Ditto.
        (make_return_stmt_edges): Ditto.
        (get_successor_block): Rename to successor_block.
        (get_successor_block): Rename to successor_block.
        Call first_exec_stmt() to find the first executable statement in
        Call first_exec_stmt() to find the first executable statement in
        TREE_CHAIN.
        TREE_CHAIN.
        (is_ctrl_stmt): Do not consider COMPOUND_STMT trees.
        (is_ctrl_stmt): Do not consider COMPOUND_STMT trees.
        (stmt_starts_bb_p): Ditto.
        (stmt_starts_bb_p): Ditto.
        (stmt_ends_bb_p): Reformat comments.
        (stmt_ends_bb_p): Reformat comments.
        (delete_cfg): Reformat comments.
        (delete_cfg): Reformat comments.
        (find_loop_parent): Rename to loop_parent.
        (find_loop_parent): Rename to loop_parent.
        (get_condition_block): Rename to condition_block.
        (get_condition_block): Rename to condition_block.
        Update to use new index numbers for control structure header
        Update to use new index numbers for control structure header
        blocks.
        blocks.
        (switch_parent): New.
        (switch_parent): New.
        (first_exec_stmt): New.
        (first_exec_stmt): New.
        (is_exec_stmt): New.
        (is_exec_stmt): New.
        (tree_cfg2dot): Reformat comments.
        (tree_cfg2dot): Reformat comments.
        * tree-dfa.c (find_refs): Remove.
        * tree-dfa.c (find_refs): Remove.
        (find_refs_in_stmt): New
        (find_refs_in_stmt): New
        (find_refs_in_stmt_expr): New.
        (find_refs_in_stmt_expr): New.
        (tree_find_varrefs): Look for variables doing a CFG traversal
        (tree_find_varrefs): Look for variables doing a CFG traversal
        instead of the trees.  Remove both arguments.
        instead of the trees.  Remove both arguments.
        (find_refs_in_expr): Add new argument 'bb'.
        (find_refs_in_expr): Add new argument 'bb'.
        Update all recursive calls.
        Update all recursive calls.
        (create_varref): Abort if the basic block 'bb' is NULL.
        (create_varref): Abort if the basic block 'bb' is NULL.
        (add_ref_to_sym): Reformat comments.
        (add_ref_to_sym): Reformat comments.
        (add_ref_symbol): Ditto.
        (add_ref_symbol): Ditto.
        (delete_varref_list): Ditto.
        (delete_varref_list): Ditto.
        * tree-flow.h (struct tree_ann_def): Add 'compound_stmt'.
        * tree-flow.h (struct tree_ann_def): Add 'compound_stmt'.
        (TREE_COMPOUND_STMT): New macro.
        (TREE_COMPOUND_STMT): New macro.
        (struct basic_block_ann_def): Remove 'exit_stmt' and
        (struct basic_block_ann_def): Remove 'exit_stmt' and
        'is_loop_header'.
        'is_loop_header'.
        (BB_EXIT_STMT): Remove.
        (BB_EXIT_STMT): Remove.
        (BB_IS_LOOP_HEADER): Remove.
        (BB_IS_LOOP_HEADER): Remove.
        * tree-opt.c (optimize_tree): Call tree_find_varrefs() with no
        * tree-opt.c (optimize_tree): Call tree_find_varrefs() with no
        arguments.
        arguments.
        Only build DFA and SSA information if n_basic_blocks is greater
        Only build DFA and SSA information if n_basic_blocks is greater
        than zero.
        than zero.
        * tree-ssa.c: Rename all instances of 'node' with 'block'.
        * tree-ssa.c: Rename all instances of 'node' with 'block'.
        (tree_build_ssa): Reformat comments.
        (tree_build_ssa): Reformat comments.
        (insert_phi_terms): Ditto.
        (insert_phi_terms): Ditto.
2001-08-01  Diego Novillo  
2001-08-01  Diego Novillo  
        * tree-cfg.c (USE_TREE_IL): Remove.
        * tree-cfg.c (USE_TREE_IL): Remove.
        (make_back_edges): Remove.
        (make_back_edges): Remove.
        (make_fallthru_edge): Remove.
        (make_fallthru_edge): Remove.
        (get_outermost_scope_block): Remove.
        (get_outermost_scope_block): Remove.
        (is_last_block_of_loop): Remove.
        (is_last_block_of_loop): Remove.
        (tree_find_basic_blocks): Do not return early if 'errorcount' is set.
        (tree_find_basic_blocks): Do not return early if 'errorcount' is set.
        (make_edges): Do not treat back edges as a separate case.
        (make_edges): Do not treat back edges as a separate case.
        Do not call make_fallthru_edge to create fall-through edges.
        Do not call make_fallthru_edge to create fall-through edges.
        Do not emit a warning for unreachable blocks containing a single
        Do not emit a warning for unreachable blocks containing a single
        closing brace.
        closing brace.
        (make_do_stmt_edges): Update comment.
        (make_do_stmt_edges): Update comment.
        (make_goto_stmt_edges): Do not call get_outermost_scope_block().
        (make_goto_stmt_edges): Do not call get_outermost_scope_block().
        (make_break_stmt_edges): Do not call get_outermost_scope_block().
        (make_break_stmt_edges): Do not call get_outermost_scope_block().
        Do not call make_back_edges().
        Do not call make_back_edges().
        (make_continue_stmt_edges): Call find_loop_parent().  Emit an error
        (make_continue_stmt_edges): Call find_loop_parent().  Emit an error
        if the 'continue' statement is not inside a loop.  Call
        if the 'continue' statement is not inside a loop.  Call
        get_condition_block() to find the target node.
        get_condition_block() to find the target node.
        (make_return_stmt_edges): Do not call get_outermost_scope_block().
        (make_return_stmt_edges): Do not call get_outermost_scope_block().
        (get_successor_block): Return EXIT_BLOCK_PTR if 'bb' is the last
        (get_successor_block): Return EXIT_BLOCK_PTR if 'bb' is the last
        block in the graph.
        block in the graph.
        Return the condition node of the loop if 'bb' doesn't have a
        Return the condition node of the loop if 'bb' doesn't have a
        natural successor and its parent is a loop header.
        natural successor and its parent is a loop header.
        (tree_cfg2dot): Output fake edges with dotted lines.
        (tree_cfg2dot): Output fake edges with dotted lines.
        * tree-dfa.c (USE_TREE_IL): Remove.
        * tree-dfa.c (USE_TREE_IL): Remove.
        * tree-opt.c (USE_TREE_IL): Remove.
        * tree-opt.c (USE_TREE_IL): Remove.
        * tree-ssa.c (USE_TREE_IL): Remove.
        * tree-ssa.c (USE_TREE_IL): Remove.
        * tree-flow.h (is_last_block_of_loop): Remove.
        * tree-flow.h (is_last_block_of_loop): Remove.
2001-07-23  Diego Novillo  
2001-07-23  Diego Novillo  
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-cfg.o, tree-dfa.o,
        * Makefile.in (C_AND_OBJC_OBJS): Add tree-cfg.o, tree-dfa.o,
        tree-ssa.o and tree-opt.o.
        tree-ssa.o and tree-opt.o.
        (c-decl.o): Add dependency on tree-opt.h
        (c-decl.o): Add dependency on tree-opt.h
        (tree-ssa.o): New rule.
        (tree-ssa.o): New rule.
        (tree-cfg.o): New rule.
        (tree-cfg.o): New rule.
        (tree-dfa.o): New rule.
        (tree-dfa.o): New rule.
        (tree-opt.o): New rule.
        (tree-opt.o): New rule.
        * c-decl.c: Include tree-opt.h.
        * c-decl.c: Include tree-opt.h.
        (c_expand_body): Call optimize_tree() when the -ftree-ssa flag is
        (c_expand_body): Call optimize_tree() when the -ftree-ssa flag is
        given.
        given.
        * flags.h (flag_tree_ssa): Declare.
        * flags.h (flag_tree_ssa): Declare.
        * toplev.c (flag_tree_ssa): Define.
        * toplev.c (flag_tree_ssa): Define.
        (lang_independent_options): Add -ftree-ssa.
        (lang_independent_options): Add -ftree-ssa.
        * tree-cfg.c: New file.
        * tree-cfg.c: New file.
        * tree-dfa.c: New file.
        * tree-dfa.c: New file.
        * tree-flow.h: New file.
        * tree-flow.h: New file.
        * tree-opt.c: New file.
        * tree-opt.c: New file.
        * tree-opt.h: New file.
        * tree-opt.h: New file.
        * tree-ssa.c: New file.
        * tree-ssa.c: New file.
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-cfg.o, tree-dfa.o,
        * cp/Make-lang.in (CXX_C_OBJS): Add tree-cfg.o, tree-dfa.o,
        tree-opt.o and tree-ssa.o.
        tree-opt.o and tree-ssa.o.
        * doc/invoke.texi: Add documentation for -ftree-ssa.
        * doc/invoke.texi: Add documentation for -ftree-ssa.
2001-07-23  Nathan Sidwell  
2001-07-23  Nathan Sidwell  
        * Makefile.in (calls.o): Depend on intl.h.
        * Makefile.in (calls.o): Depend on intl.h.
        * calls.c: Include intl.h.
        * calls.c: Include intl.h.
        (ECF_NEED_STACK_FRAME, ECF_NEED_ARG_FRAME): New flags.
        (ECF_NEED_STACK_FRAME, ECF_NEED_ARG_FRAME): New flags.
        (special_function_p): Detect when we need a stack or arg
        (special_function_p): Detect when we need a stack or arg
        frame. Don't optimize on length.
        frame. Don't optimize on length.
        (setjmp_call_p): Remove.
        (setjmp_call_p): Remove.
        (uninlinable_call_p): New function.
        (uninlinable_call_p): New function.
        * tree.h (setjmp_call_p): Remove.
        * tree.h (setjmp_call_p): Remove.
        (uninlinable_call_p): Declare.
        (uninlinable_call_p): Declare.
2001-07-22  Nathan Sidwell  
2001-07-22  Nathan Sidwell  
        * params.def (PARAM_MAX_INLINE_AST): New parameter.
        * params.def (PARAM_MAX_INLINE_AST): New parameter.
        (PARAM_ARG_INLINE_AST): New parameter.
        (PARAM_ARG_INLINE_AST): New parameter.
        * doc/invoke.texi (max-inline-ast, arg-inline-ast): Document
        * doc/invoke.texi (max-inline-ast, arg-inline-ast): Document
        parameters.
        parameters.
Local Variables:
Local Variables:
mode: change-log
mode: change-log
change-log-default-name: "ChangeLog.tree-ssa"
change-log-default-name: "ChangeLog.tree-ssa"
End:
End:
 
 

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