Subversion Repositories openrisc

2007-06-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 125733

2007-06-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-vrp.c (compare_values_warnv): Fix spelling/grammer
        mistakes
        (extract_range_from_binary_expr): Likewise.
        * doc/c-tree.texi (POINTER_PLUS_EXPR): Likewise.
        * tree-ssa-loop-niter.c (assert_loop_rolls_lt): Add vertical
        whitespace.
        * tree-pretty-print.c (op_symbol_code <case POINTER_PLUS_EXPR>):
        Change print out to "+".
        * tree-scalar-evolution.c (instantiate_parameters_1):
        Use chrec_type instead of TREE_TYPE.
        * builtins.c (expand_builtin_strcat): Fix vertical whitespace.
        (std_expand_builtin_va_start): Fix whitespace.
        (fold_builtin_strstr): Use size_int instead of build_int_cst (sizetype.
        (fold_builtin_strchr): Likewise.
        (fold_builtin_strrchr): Likewise.
        (fold_builtin_strpbrk): Likewise.
        * fold-const.c (try_move_mult_to_index): Fix spelling/grammer
        mistakes.
        (fold_to_nonsharp_ineq_using_bound): Merge the two ifs at the end.
        (fold_binary): Fix spelling/grammer mistakes.
        * tree-ssa-ccp.c (maybe_fold_stmt_addition): Assert that only
        a POINTER_PLUS_EXPR is passed in.
        * tree-ssa-loop-ivopts.c (determine_base_object):
        Fix spelling/grammer mistakes.
        * expr.c (expand_expr_real_1): Likewise.
        * tree-data-ref.c (split_constant_offset): Likewise.
        * c-typeck.c (build_unary_op): Use fold_convert instead of convert
        for converting to sizetype.
        * tree.def (POINTER_PLUS_EXPR): Fix comment.
        * tree-ssa-forwprop.c (forward_propagate_addr_expr_1):
        Fix spelling/grammer mistakes.
        (phiprop_insert_phi): Likewise.
        * c-common.c (pointer_int_sum): Remove FIXME about
        POINTER_MINUS_EXPR.

2007-06-13  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * expr.c (expand_expr_real_1 <case POINTER_PLUS_EXPR>): Remove assert
        for checking the modes of the operands are the same.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/sparc/sparc.c (sparc_gimplify_va_arg): Use POINTER_PLUS_EXPR
        instead of PLUS_EXPR when the operand was a pointer.  Don't create a
        BIT_AND_EXPR for pointer types.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/mips/mips.c (mips_va_start): Use POINTER_PLUS_EXPR
        for pointers.
        (mips_gimplify_va_arg_expr): Likewise.
        Don't create BIT_AND_EXPR in a pointer type.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 125658 

2007-06-11  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 125611

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * matrix-reorg.c (collect_data_for_malloc_call): Stmt
        will now only be either INDIRECT_REF and POINTER_PLUS_EXPR.
        Offset only holds something for PLUS_EXPR.
        (ssa_accessed_in_tree): Handle POINTER_PLUS_EXPR just as
        a PLUS_EXPR.
        (analyze_transpose): POINTER_PLUS_EXPR will only show up now
        and not PLUS_EXPR.
        (analyze_accesses_for_modify_stmt): Likewise.
        Remove comment about the type being integral type as it is
        wrong now.
        (analyze_matrix_accesses): Handle POINTER_PLUS_EXPR as
        PLUS_EXPR.
        (transform_access_sites): POINTER_PLUS_EXPR will only show up now
        and not PLUS_EXPR.
        Correct the type which the artimentic is done in (is now
        sizetype).
        Reindent one loop.

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/ia64/ia64.c (ia64_gimplify_va_arg): Use
        POINTER_PLUS_EXPR for pointers and create the
        BIT_AND_EXPR in sizetype.
        * config/s390/s390.c (s390_va_start): Use POINTER_PLUS_EXPR
        for pointers instead of PLUS_EXPR.
        (s390_gimplify_va_arg): Likewise.

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/frv/frv.c (frv_expand_builtin_va_start): Use sizetype
        with make_tree, instead of a pointer type.
        * config/pa/pa.c (reloc_needed): Handle POINTER_PLUS_EXPR
        as PLUS_EXPR/MINUS_EXPR.
        (hppa_gimplify_va_arg_expr): Don't create MINUS_EXPR or
        PLUS_EXPR for pointers, instead use POINTER_PLUS_EXPR.
        Don't use BIT_AND_EXPR on a pointer type, convert the
        expression to sizetype first.

2007-06-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-ssa-forwprop.c
        (forward_propagate_addr_into_variable_array_index):
        Don't expect a statement for the size 1 case.
        Use the offset variable for the size 1 case.
        Look through use-def chains to find the mutliply
        for the non size 1 case.
        (forward_propagate_addr_expr_1): Call
        forward_propagate_addr_into_variable_array_index with
        the SSA_NAME instead of the statement.

2007-06-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR tree-opt/32225
        * tree-scalar-evolution.c (follow_ssa_edge_in_rhs <case
        POINTER_PLUS_EXPR>): Do not change type_rhs.
        (follow_ssa_edge_in_rhs <case POINTER_PLUS_EXPR, case PLUS_EXPR>):
        Use the code of the orginal expression instead of just PLUS_EXPR.
        Also use type_rhs where TREE_TYPE (rhs) was used (reverting back
        to the trunk).

2007-06-03  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-predcom.c (ref_at_iteration): If we have a pointer
        type do the multiplication in sizetype.

2007-06-01  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 125285

2007-05-31  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-vrp.c (extract_range_from_binary_expr): Handle
        MIN_EXPR/MAX_EXPR for pointers type.

        PR tree-opt/32167
        * tree-chrec.c (chrec_fold_plus): When either
        operand is zero, convert the other operand.

2007-05-30  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * builtins.c (std_expand_builtin_va_start): Use
        sizetype for the call to make_tree and then convert
        to the pointer type.

2007-05-30  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR tree-op/32145
        * tree-vrp.c (extract_range_from_assert): Create
        POINTER_PLUS_EXPR for pointer types.

        PR tree-opt/32144
        * tree-chrec.c (chrec_fold_plus_poly_poly): If the
        first chrec is a pointer type, then the second should
        be sizetype and not the first's type.   

2007-05-28  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * fold-const.c (try_move_mult_to_index):
        Say why we strip the nops.
        (fold_unary <case NOP_EXPR>): Remove
        TODO as we cannot get that case.
        * tree-chrec.c (chrec_fold_plus):
        Cleanup the code to chose which
        tree code is used.
        (chrec_convert_rhs): Add comment on
        why the increment is sizetype for
        pointers.
        * tree-mudflap.c (mf_xform_derefs_1):
        Use size_int instead of build_int_cst.
        * tree-ssa-loop-prefetch.c (issue_prefetch_ref): Likewise.

2007-05-21  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR tree-opt/32015
        * tree.c (build2_stat): Make sure that
        MULT_EXPR is not used with pointers.
        * tree-chrec.c (chrec_apply): Use chrec_convert_rhs
        on the argument x instead of chrec_convert.

2007-05-20  Kaz Kojima  <kkojima@gcc.gnu.org>

        * config/sh/sh.c (sh_va_start): Call make_tree with sizetype
        and convert its result to a pointer type.  Use POINTER_PLUS_EXPR
        for the pointer additions and also use size_int for the offsets.
        (sh_gimplify_va_arg_expr): Use POINTER_PLUS_EXPR for the pointer
        additions and also use size_int for the offsets.  Perform
        BIT_AND_EXPR on sizetype arguments.

2007-05-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-ssa-forwprop (forward_propagate_addr_into_variable_array_index):
        Don't expect there to be a cast for the index as that
        does not exist anymore.
        (forward_propagate_addr_expr_1): Check for
        POINTER_PLUS_EXPR instead of PLUS_EXPR.
        Don't check for the first operand of the
        POINTER_PLUS_EXPR was the index as it
        cannot be.

2007-05-15  Richard Guenther  <rguenther@suse.de>

        * config/i386/i386.c (ix86_gimplify_va_arg): Use POINTER_PLUS_EXPR,
        perform BIT_AND_EXPR on sizetype arguments.

2007-05-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/rs6000/rs6000.c (rs6000_va_start): Use POINTER_PLUS_EXPR
        instead of PLUS_EXPR for pointer addition.
        (rs6000_va_start): Likewise.
        Also use sizetype for the offset.
        * tree-stdarg.c (va_list_counter_bump): Check for PLUS_EXPR
        and POINTER_PLUS_EXPR.
        (check_va_list_escapes): Likewise.

2007-05-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/i386/i386.c (ix86_va_start): Use POINTER_PLUS_EXPR
        for the pointer addition and also use size_int/sizetype
        for the offset.
        (ix86_gimplify_va_arg): Likewise.

2007-05-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 124657
        * tree-data-ref.c (split_constant_offset): Handle
        POINTER_PLUS_EXPR
        exactly the same as PLUS_EXPR/MINUS_EXPR except for the offset
        needs to be calcuated using PLUS_EXPR instead of
        POINTER_PLUS_EXPR.
        * builtins.c (fold_builtin_memchr): Use POINTER_PLUS_EXPR
        instead of PLUS_EXPR for adding to a pointer.

2006-05-15  Zdenek Dvorak <dvorakz@suse.cz>

        * tree-ssa-loop-ivopts.c (determine_base_object): Abort for PLUS_EXPR
        in pointer type.

2007-05-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-ssa-address.c (tree_mem_ref_addr): When adding
        the offset to the base, use POINTER_PLUS_EXPR.

2007-05-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * expr.c (expand_expr_addr_expr_1): Call expand_expr
        for the offset with the modifier as EXPAND_INITIALIZER
        if the modifier is EXPAND_INITIALIZER.
        (expand_expr_real_1 <case INTEGER_CST>): Don't force to
        a register if we had an overflow.

2007-05-10  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 124602.

        * fold-const.c  (extract_array_ref): Make sure the offset
        is converted to sizetype.
        (try_move_mult_to_index): Strip the NOPs from the offset.
        (fold_binary <case POINTER_PLUS_EXPR>): Convert the second
        operand to sizetype before calling try_move_mult_to_index.
        * tree-ssa-loop-niter.c (number_of_iterations_lt_to_ne):
        For pointer types, use sizetype when
        creating MINUS_EXPR/PLUS_EXPRs.
        * tree-ssa-ccp.c (maybe_fold_stmt_indirect): Make sure
        the offset is converted to sizetype.

2007-05-11  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * config/spu/spu.c (spu_va_start): Create POINTER_PLUS_EXPR
        instead of PLUS_EXPR when doing addition on pointer
        types.  Use sizetype for the second operand.
        (spu_gimplify_va_arg_expr): Likewise.
        * tree-ssa.c (tree_ssa_useless_type_conversion_1):
        Convert the MIN/MAX of the inner type to the outer
        type before comparing them.

2007-05-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Zdenek Dvorak  <dvorakz@suse.cz>

        * fold-const.c  (fold_to_nonsharp_ineq_using_bound): Don't
        use a pointer type for MINUS_EXPR.
        (fold_binary <case MINUS_EXPR>): Fold (PTR0 p+ A) - (PTR1 p+ B)
        into (PTR0 - PTR1) + (A - B). Fold (PTR0 p+ A) - PTR1 into
        (PTR0 - PTR1) + A iff (PTR0 - PTR1) simplifies.
        * tree-chrec.c (chrec_fold_plus_poly_poly): For
        POINTER_PLUS_EXPR, use a different right hand side type.
        Handle POINTER_PLUS_EXPR like PLUS_EXPR.
        (chrec_fold_plus_1): Likewise.
        (convert_affine_scev): Likewise.
        (chrec_convert_aggressive): Likewise.
        (chrec_fold_plus): For pointer types, use POINTER_PLUS_EXPR
        instead of PLUS_EXPR.
        (reset_evolution_in_loop): For pointer types, the new_evol
        should be sizetype.
        (chrec_convert_rhs): New function.
        * tree-chrec.h (chrec_convert_rhs): New prototype.
        (build_polynomial_chrec): For pointer types, the right hand
        side should be sizetype and not the same as the left hand side.
        * tree-scalar-evolution.c (add_to_evolution_1): Convert the
        increment using chrec_convert_rhs instead of chrec_convert.
        (follow_ssa_edge_in_rhs): Handle POINTER_PLUS_EXPR like
        PLUS_EXPR except for the right hand side's type will be
        sizetype.
        (interpret_rhs_modify_stmt): Handle POINTER_PLUS_EXPR.
        (fold_used_pointer_cast): Kill.
        (pointer_offset_p): Kill.
        (fold_used_pointer): Kill.
        (pointer_used_p): Kill.
        (analyze_scalar_evolution_1 <case GIMPLE_MODIFY_STMT>): Don't
        call fold_used_pointer.
        (instantiate_parameters_1): Convert the increment
        using chrec_convert_rhs instead of chrec_convert.
        Handle POINTER_PLUS_EXPR as PLUS_EXPR.
        * tree-ssa-loop-niter.c (split_to_var_and_offset): Handle
        POINTER_PLUS_EXPR as PLUS_EXPR.
        (assert_loop_rolls_lt): For pointer types, use sizetype when
        creating MINUS_EXPR/PLUS_EXPRs.
        (number_of_iterations_le): Likewise.
        (expand_simple_operations): POINTER_PLUS_EXPR are simple also.
        (derive_constant_upper_bound): Handle POINTER_PLUS_EXPR just
        like PLUS_EXPR and MINUS_EXPR.
        * tree-data-ref.c (analyze_offset_expr): Likewise.
        (address_analysis): Handle POINTER_PLUS_EXPR as PLUS_EXPR.
        (analyze_offset): Handle POINTER_PLUS_EXPR also.
        (create_data_ref): Convert the increment
        using chrec_convert_rhs instead of chrec_convert.
        * tree-vect-transform.c (vect_update_ivs_after_vectorizer):
        For pointer types, create POINTER_PLUS_EXPR instead of
        PLUS_EXPR and also create MULT_EXPR in sizetype.

2007-05-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * builtins.c (std_gimplify_va_arg_expr): Use fold_build2 for
        the creating of POINTER_PLUS_EXPR.  For the BIT_AND_EXPR, cast
        the operands to sizetype first and then cast the BIT_AND_EXPR
        back to the pointer type.
        * tree-ssa-address.c (create_mem_ref): Create A
        POINTER_PLUS_EXPR for one case.
        * tree.c (const_hash_1): Handle POINTER_PLUS_EXPR same as
        PLUS_EXPR.
        (compare_constant): Likewise.
        (copy_constant): Likewise.
        (compute_reloc_for_constant): Likewise.
        (output_addressed_constants): Likewise.

2007-05-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree.def (POINTER_PLUS_EXPR): The second operand
        is of type sizetype and not ssizetype.
        * doc/c-tree.texi (POINTER_PLUS_EXPR): Document.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-mudflap.c (mf_xform_derefs_1 <case BIT_FIELD_REF>):
        Add a conversion of ofs to sizetype.
        (mf_decl_eligible_p): Reformat for length issues.
        (mf_xform_derefs_1): Likewise.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree.c (build2_stat): Check to make sure the
        second operand is compatiable with sizetype.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-cfg.c (verify_expr): Change error
        message about sizetype to be correct.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 124478.
        * fold-const.c (fold_unary): Handle for (T1)(X op Y),
        only p+ as that is the only as that can be handled for
        binary operators now.  Add a TODO for non pointer type
        op's.
        * gimplifier.c (gimplify_expr): Don't special case
        PLUS_EXPR.  Special case POINTER_PLUS_EXPR instead,
        remove check for pointer type as it will always be
        a pointer type now.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-vrp.c (extract_range_from_binary_expr): Handle
        POINTER_PLUS_EXPRs.  Assert POINTER_PLUS_EXPR is
        the only expression for pointer types.
        * tree-vect-transform.c (vect_gen_niters_for_prolog_loop):
        Add a cast when creating byte_misalign.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * fold-const.c (fold_binary <case POINTER_PLUS_EXPR>);
        Add comment on why you get INT +p INT.
        (fold_binary <case PLUS_EXPR>): Add folding of PTR+INT into
        PTR p+ INT.
        * dwarf2out.c (loc_descriptor_from_tree_1):
        Handle POINT_PLUS_EXPR as a PLUS_EXPR.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree-vrp.c  (compare_values_warnv): Convert val2 to
        the type of val1.
        * fold-const.c (extract_array_ref): Look for
        POINTER_PLUS_EXPR instead of PLUS_EXPR's.
        * tree-ssa-ccp.c (maybe_fold_stmt_indirect): Likewise.

2007-05-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * c-format.c (check_format_arg): Handle POINTER_PLUS_EXPR
        instead of PLUS_EXPR of pointer types.

2007-05-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * fold-const.c (try_move_mult_to_index): Remove code argument
        and replace all uses with PLUS_EXPR.
        (fold_binary <case POINTER_PLUS_EXR>): Remove code argument.
        (fold_binary <case PLUS_EXPR>): Don't call try_move_mult_to_index.
        (fold_binary <case MINUS_EXPR>): Likewise.
        * tree-ssa-ccp.c (maybe_fold_stmt_indirect): Remove subtraction
        case as it is always addition now.
        (fold_stmt_r): Don't handle PLUS_EXPR/MINUS_EXPR specially.
        Handle POINTER_PLUS_EXPR like PLUS_EXPR was handled before.

2007-05-01  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 124343.
        * tree-vect-transform.c (bump_vector_ptr): Create a POINTER_PLUS_EXPR
        instead of PLUS_EXPR for the pointer increment statement.
        * expr.c (expand_expr_real_1): Add FIXME/assert for the unhandle case
        where the modes of the two operands are different.

2007-02-25  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        Merge mainline, revision 122323.

2006-12-14  Zdenek Dvorak <dvorakz@suse.cz>

        Merge mainline, revision 119860.

2006-11-23  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * tree.def (POINTER_PLUS_EXPR): New tree code.
        * tree-pretty-print.c (dump_generic_node): Handle
        POINTER_PLUS_EXPR.
        (op_prio): Likewise.
        (op_symbol_1): Likewise.
        * optabs.c (optab_for_tree_code): Likewise.
        * tree-ssa-loop-manip.c (create_iv): Handle pointer base
        specially.
        * tree-tailcall.c (process_assignment): Mention
        POINTER_PLUS_EXPR in a TODO comment.
        * tree.c (build2_stat): Assert when trying to use PLUS_EXPR or 
        MINUS_EXPR with a pointer. Also assert for POINTER_PLUS_EXPR
        not used with a pointer and an integer type.
        *  tree-scalar-evolution.c (fold_used_pointer): Mention
        POINTER_PLUS_EXPR is what this needs to handle.
        * builtins.c (get_pointer_alignment): Handle POINTER_PLUS_EXPR
        instead of PLUS_EXPR.
        (expand_builtin_strcat): Create a POINTER_PLUS_EXPR instead of
        PLUS_EXPR for pointers.
        (std_gimplify_va_arg_expr): Likewise.
        (fold_builtin_memory_op): Likewise.
        (fold_builtin_strstr): Likewise.
        (fold_builtin_strchr): Likewise.
        (fold_builtin_strrchr): Likewise.
        (fold_builtin_strpbrk): Likewise.
        (expand_builtin_memory_chk): Likewise.
        (fold_builtin_memory_chk): Likewise.
        * fold-const.c (build_range_check): Handle pointer types
        specially.
        (fold_to_nonsharp_ineq_using_bound): Likewise.
        (fold_binary): Handle simple POINTER_PLUS_EXPR cases.
        (tree_expr_nonnegative_p): Handle POINTER_PLUS_EXPR.
        (tree_expr_nonzero_p): Likewise.
        (fold_indirect_ref_1): Look at POINTER_PLUS_EXPR instead
        of PLUS_EXPR for the complex expression folding.
        * tree-ssa-loop-ivopts.c (determine_base_object): Handle
        POINTER_PLUS_EXPR.
        (tree_to_aff_combination): Likewise.
        (force_expr_to_var_cost): Likewise.
        (force_expr_to_var_cost): Likewise. Create a POINTER_PLUS_EXPR
        instead of PLUS_EXPR for pointers.
        * c-format.c (check_format_arg): Mention this should be handling
        POINTER_PLUS_EXPR.
        * tree-stdarg.c (va_list_counter_bump): Handle POINTER_PLUS_EXPR
        instead of PLUS_EXPR.
        (check_va_list_escapes): Likewise.
        (check_all_va_list_escapes): Likewise.
        * expr.c (expand_expr_real_1): Handle POINTER_PLUS_EXPR.
        (string_constant): Likewise.
        * tree-ssa-address.c (add_to_parts): Create a POINTER_PLUS_EXPR
        instead of PLUS_EXPR for pointers.
        (most_expensive_mult_to_index): Likewise.
        (addr_to_parts): Use the correct type for the index.
        * c-typeck.c (build_unary_op): For pointers create the increment
        as a sizetype. Create a POINTER_PLUS_EXPR instead of PLUS_EXPR
        for pointers.
        * gimplify.c (gimplify_self_mod_expr): Create a
        POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
        (gimplify_omp_atomic_fetch_op): Handle POINTER_PLUS_EXPR.
        * tree-mudflap.c (mf_xform_derefs_1): Create a
        POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
        * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Add a
        note this should be handling POINTER_PLUS_EXPR.
        * varasm.c (initializer_constant_valid_p): Handle
        POINTER_PLUS_EXPR.
        * tree-ssa-loop-prefetch.c (idx_analyze_ref):  Handle
        POINTER_PLUS_EXPR instead of PLUS_EXPR.
        (issue_prefetch_ref): Create a POINTER_PLUS_EXPR instead
        of PLUS_EXPR for pointers.
        * tree-vect-transform.c (vect_create_addr_base_for_vector_ref):
        Likewise.
        * tree-inline.c (estimate_num_insns_1): Handle
        POINTER_PLUS_EXPR.
        * tree-object-size.c (plus_expr_object_size): Handle
        POINTER_PLUS_EXPR instead of PLUS_EXPR.  Removing all the extra
        code which is trying to figure out which side is a pointer and 
        is the index.
        (check_for_plus_in_loops_1): Likewise.
        (check_for_plus_in_loops): Likewise.
        * c-common.c (pointer_int_sum): Create a
        POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
        * tree-ssa-structalias.c (handle_ptr_arith): Handle
        only POINTER_PLUS_EXPR.  Removing all the extra
        code which is trying to figure out which side is a pointer and 
        is the index.
        * tree-cfg.c (verify_expr): Add extra checking for pointers and
        PLUS_EXPR and MINUS_EXPR.
        Also add checking to make sure the operands of POINTER_PLUS_EXPR
        are correct.


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