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/* Routines for reading trees from a file stream. Copyright 2011 Free Software Foundation, Inc. Contributed by Diego Novillo <dnovillo@google.com> This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config.h" #include "system.h" #include "coretypes.h" #include "diagnostic.h" #include "tree.h" #include "tree-flow.h" #include "tree-streamer.h" #include "data-streamer.h" #include "streamer-hooks.h" #include "lto-streamer.h" /* Read a STRING_CST from the string table in DATA_IN using input block IB. */ tree streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib) { unsigned int len; const char * ptr; ptr = streamer_read_indexed_string (data_in, ib, &len); if (!ptr) return NULL; return build_string (len, ptr); } /* Read an IDENTIFIER from the string table in DATA_IN using input block IB. */ static tree input_identifier (struct data_in *data_in, struct lto_input_block *ib) { unsigned int len; const char *ptr; ptr = streamer_read_indexed_string (data_in, ib, &len); if (!ptr) return NULL; return get_identifier_with_length (ptr, len); } /* Read a chain of tree nodes from input block IB. DATA_IN contains tables and descriptors for the file being read. */ tree streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in) { int i, count; tree first, prev, curr; first = prev = NULL_TREE; count = streamer_read_hwi (ib); for (i = 0; i < count; i++) { curr = stream_read_tree (ib, data_in); if (prev) TREE_CHAIN (prev) = curr; else first = curr; TREE_CHAIN (curr) = NULL_TREE; prev = curr; } return first; } /* Unpack all the non-pointer fields of the TS_BASE structure of expression EXPR from bitpack BP. */ static void unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr) { /* Note that the code for EXPR has already been unpacked to create EXPR in streamer_alloc_tree. */ if (!TYPE_P (expr)) { TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1); /* TREE_PUBLIC is used on types to indicate that the type has a TYPE_CACHED_VALUES vector. This is not streamed out, so we skip it here. */ TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1); } else bp_unpack_value (bp, 4); TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1); if (DECL_P (expr)) DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1); else if (TYPE_P (expr)) TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1); else bp_unpack_value (bp, 1); TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1); if (TYPE_P (expr)) TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1); else TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_USED (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1); if (TYPE_P (expr)) { TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8); } else if (TREE_CODE (expr) == SSA_NAME) SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1); else bp_unpack_value (bp, 1); } /* Unpack all the non-pointer fields of the TS_REAL_CST structure of expression EXPR from bitpack BP. */ static void unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr) { unsigned i; REAL_VALUE_TYPE r; REAL_VALUE_TYPE *rp; r.cl = (unsigned) bp_unpack_value (bp, 2); r.decimal = (unsigned) bp_unpack_value (bp, 1); r.sign = (unsigned) bp_unpack_value (bp, 1); r.signalling = (unsigned) bp_unpack_value (bp, 1); r.canonical = (unsigned) bp_unpack_value (bp, 1); r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS); for (i = 0; i < SIGSZ; i++) r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG); rp = ggc_alloc_real_value (); memcpy (rp, &r, sizeof (REAL_VALUE_TYPE)); TREE_REAL_CST_PTR (expr) = rp; } /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of expression EXPR from bitpack BP. */ static void unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr) { struct fixed_value fv; fv.mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE); fv.data.low = bp_unpack_var_len_int (bp); fv.data.high = bp_unpack_var_len_int (bp); TREE_FIXED_CST (expr) = fv; } /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure of expression EXPR from bitpack BP. */ static void unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr) { DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE); DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_DEBUG_EXPR_IS_FROM (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp); if (TREE_CODE (expr) == LABEL_DECL) { DECL_ERROR_ISSUED (expr) = (unsigned) bp_unpack_value (bp, 1); EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp); /* Always assume an initial value of -1 for LABEL_DECL_UID to force gimple_set_bb to recreate label_to_block_map. */ LABEL_DECL_UID (expr) = -1; } if (TREE_CODE (expr) == FIELD_DECL) { DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1); expr->decl_common.off_align = bp_unpack_value (bp, 8); } if (TREE_CODE (expr) == RESULT_DECL || TREE_CODE (expr) == PARM_DECL || TREE_CODE (expr) == VAR_DECL) { DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1); if (TREE_CODE (expr) == VAR_DECL || TREE_CODE (expr) == PARM_DECL) DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_RESTRICTED_P (expr) = (unsigned) bp_unpack_value (bp, 1); } } /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure of expression EXPR from bitpack BP. */ static void unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr) { DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1); } /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure of expression EXPR from bitpack BP. */ static void unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr) { DECL_DEFER_OUTPUT (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2); DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1); if (TREE_CODE (expr) == VAR_DECL) { DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IN_TEXT_SECTION (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp, 3); } if (VAR_OR_FUNCTION_DECL_P (expr)) { priority_type p; p = (priority_type) bp_unpack_var_len_unsigned (bp); SET_DECL_INIT_PRIORITY (expr, p); } } /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure of expression EXPR from bitpack BP. */ static void unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr) { DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class, BUILT_IN_LAST); DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1); if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN) { DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp, 11); if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL && DECL_FUNCTION_CODE (expr) >= END_BUILTINS) fatal_error ("machine independent builtin code out of range"); else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD) { tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true); if (!result || result == error_mark_node) fatal_error ("target specific builtin not available"); } } if (DECL_STATIC_DESTRUCTOR (expr)) { priority_type p; p = (priority_type) bp_unpack_var_len_unsigned (bp); SET_DECL_FINI_PRIORITY (expr, p); } } /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure of expression EXPR from bitpack BP. */ static void unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr) { enum machine_mode mode; mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE); SET_TYPE_MODE (expr, mode); TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1); if (RECORD_OR_UNION_TYPE_P (expr)) TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr) = (unsigned) bp_unpack_value (bp, 2); TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1); TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp); TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp); TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp); } /* Unpack all the non-pointer fields of the TS_BLOCK structure of expression EXPR from bitpack BP. */ static void unpack_ts_block_value_fields (struct bitpack_d *bp, tree expr) { BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1); /* BLOCK_NUMBER is recomputed. */ } /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL structure of expression EXPR from bitpack BP. */ static void unpack_ts_translation_unit_decl_value_fields (struct bitpack_d *bp ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED) { } /* Unpack all the non-pointer fields in EXPR into a bit pack. */ static void unpack_value_fields (struct bitpack_d *bp, tree expr) { enum tree_code code; code = TREE_CODE (expr); /* Note that all these functions are highly sensitive to changes in the types and sizes of each of the fields being packed. */ unpack_ts_base_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST)) unpack_ts_real_cst_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST)) unpack_ts_fixed_cst_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) unpack_ts_decl_common_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) unpack_ts_decl_wrtl_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) unpack_ts_decl_with_vis_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) unpack_ts_function_decl_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) unpack_ts_type_common_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) unpack_ts_block_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) unpack_ts_translation_unit_decl_value_fields (bp, expr); } /* Read all the language-independent bitfield values for EXPR from IB. Return the partially unpacked bitpack so the caller can unpack any other bitfield values that the writer may have written. */ struct bitpack_d streamer_read_tree_bitfields (struct lto_input_block *ib, tree expr) { enum tree_code code; struct bitpack_d bp; /* Read the bitpack of non-pointer values from IB. */ bp = streamer_read_bitpack (ib); /* The first word in BP contains the code of the tree that we are about to read. */ code = (enum tree_code) bp_unpack_value (&bp, 16); lto_tag_check (lto_tree_code_to_tag (code), lto_tree_code_to_tag (TREE_CODE (expr))); /* Unpack all the value fields from BP. */ unpack_value_fields (&bp, expr); return bp; } /* Materialize a new tree from input block IB using descriptors in DATA_IN. The code for the new tree should match TAG. Store in *IX_P the index into the reader cache where the new tree is stored. */ tree streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in, enum LTO_tags tag) { enum tree_code code; tree result; #ifdef LTO_STREAMER_DEBUG HOST_WIDEST_INT orig_address_in_writer; #endif result = NULL_TREE; #ifdef LTO_STREAMER_DEBUG /* Read the word representing the memory address for the tree as it was written by the writer. This is useful when debugging differences between the writer and reader. */ orig_address_in_writer = streamer_read_hwi (ib); gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer); #endif code = lto_tag_to_tree_code (tag); /* We should never see an SSA_NAME tree. Only the version numbers of SSA names are ever written out. See input_ssa_names. */ gcc_assert (code != SSA_NAME); /* Instantiate a new tree using the header data. */ if (CODE_CONTAINS_STRUCT (code, TS_STRING)) result = streamer_read_string_cst (data_in, ib); else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER)) result = input_identifier (data_in, ib); else if (CODE_CONTAINS_STRUCT (code, TS_VEC)) { HOST_WIDE_INT len = streamer_read_hwi (ib); result = make_tree_vec (len); } else if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) { unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib); result = make_tree_binfo (len); } else if (code == CALL_EXPR) { unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib); return build_vl_exp (CALL_EXPR, nargs + 3); } else { /* For all other nodes, materialize the tree with a raw make_node call. */ result = make_node (code); } #ifdef LTO_STREAMER_DEBUG /* Store the original address of the tree as seen by the writer in RESULT's aux field. This is useful when debugging streaming problems. This way, a debugging session can be started on both writer and reader with a breakpoint using this address value in both. */ lto_orig_address_map (result, (intptr_t) orig_address_in_writer); #endif return result; } /* Read all pointer fields in the TS_COMMON structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_common_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { if (TREE_CODE (expr) != IDENTIFIER_NODE) TREE_TYPE (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_VECTOR structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_vector_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { TREE_VECTOR_CST_ELTS (expr) = streamer_read_chain (ib, data_in); } /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_complex_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { TREE_REALPART (expr) = stream_read_tree (ib, data_in); TREE_IMAGPART (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { DECL_NAME (expr) = stream_read_tree (ib, data_in); DECL_CONTEXT (expr) = stream_read_tree (ib, data_in); DECL_SOURCE_LOCATION (expr) = lto_input_location (ib, data_in); } /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { DECL_SIZE (expr) = stream_read_tree (ib, data_in); DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in); DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in); /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information for early inlining so drop it on the floor instead of ICEing in dwarf2out.c. */ if (TREE_CODE (expr) == PARM_DECL) TREE_CHAIN (expr) = streamer_read_chain (ib, data_in); if ((TREE_CODE (expr) == VAR_DECL || TREE_CODE (expr) == PARM_DECL) && DECL_HAS_VALUE_EXPR_P (expr)) SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in)); if (TREE_CODE (expr) == VAR_DECL) { tree dexpr = stream_read_tree (ib, data_in); if (dexpr) SET_DECL_DEBUG_EXPR (expr, dexpr); } } /* Read all pointer fields in the TS_DECL_NON_COMMON structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { if (TREE_CODE (expr) == FUNCTION_DECL) { DECL_ARGUMENTS (expr) = stream_read_tree (ib, data_in); DECL_RESULT (expr) = stream_read_tree (ib, data_in); } else if (TREE_CODE (expr) == TYPE_DECL) DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in); DECL_VINDEX (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { tree id; id = stream_read_tree (ib, data_in); if (id) { gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE); SET_DECL_ASSEMBLER_NAME (expr, id); } DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in); DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in); DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in); /* Do not stream DECL_QUALIFIER, it is useless after gimplification. */ DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in); DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto, maybe it should be handled here? */ DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in); DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in); DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in); /* If the file contains a function with an EH personality set, then it was compiled with -fexceptions. In that case, initialize the backend EH machinery. */ if (DECL_FUNCTION_PERSONALITY (expr)) lto_init_eh (); } /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { TYPE_SIZE (expr) = stream_read_tree (ib, data_in); TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in); TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in); TYPE_NAME (expr) = stream_read_tree (ib, data_in); /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be reconstructed during fixup. */ /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists during fixup. */ TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in); TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in); /* TYPE_CANONICAL gets re-computed during type merging. */ TYPE_CANONICAL (expr) = NULL_TREE; TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { if (TREE_CODE (expr) == ENUMERAL_TYPE) TYPE_VALUES (expr) = stream_read_tree (ib, data_in); else if (TREE_CODE (expr) == ARRAY_TYPE) TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in); else if (RECORD_OR_UNION_TYPE_P (expr)) TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in); else if (TREE_CODE (expr) == FUNCTION_TYPE || TREE_CODE (expr) == METHOD_TYPE) TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in); if (!POINTER_TYPE_P (expr)) TYPE_MINVAL (expr) = stream_read_tree (ib, data_in); TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in); if (RECORD_OR_UNION_TYPE_P (expr)) TYPE_BINFO (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_LIST structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_list_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { TREE_PURPOSE (expr) = stream_read_tree (ib, data_in); TREE_VALUE (expr) = stream_read_tree (ib, data_in); TREE_CHAIN (expr) = streamer_read_chain (ib, data_in); } /* Read all pointer fields in the TS_VEC structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_vec_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { int i; /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to instantiate EXPR. */ for (i = 0; i < TREE_VEC_LENGTH (expr); i++) TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_EXP structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_exp_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { int i, length; location_t loc; length = streamer_read_hwi (ib); gcc_assert (length == TREE_OPERAND_LENGTH (expr)); for (i = 0; i < length; i++) TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in); loc = lto_input_location (ib, data_in); SET_EXPR_LOCATION (expr, loc); TREE_BLOCK (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_BLOCK structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_block_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information for early inlining so drop it on the floor instead of ICEing in dwarf2out.c. */ BLOCK_VARS (expr) = streamer_read_chain (ib, data_in); /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information for early inlining so drop it on the floor instead of ICEing in dwarf2out.c. */ BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in); /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information for early inlining so drop it on the floor instead of ICEing in dwarf2out.c. */ BLOCK_FRAGMENT_ORIGIN (expr) = stream_read_tree (ib, data_in); BLOCK_FRAGMENT_CHAIN (expr) = stream_read_tree (ib, data_in); /* We re-compute BLOCK_SUBBLOCKS of our parent here instead of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still stream the child relationship explicitly. */ if (BLOCK_SUPERCONTEXT (expr) && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK) { BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)); BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr; } /* The global block is rooted at the TU decl. Hook it here to avoid the need to stream in this block during WPA time. */ else if (BLOCK_SUPERCONTEXT (expr) && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL) DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr; /* The function-level block is connected at the time we read in function bodies for the same reason. */ } /* Read all pointer fields in the TS_BINFO structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { unsigned i, len; tree t; /* Note that the number of slots in EXPR was read in streamer_alloc_tree when instantiating EXPR. However, the vector is empty so we cannot rely on VEC_length to know how many elements to read. So, this list is emitted as a 0-terminated list on the writer side. */ do { t = stream_read_tree (ib, data_in); if (t) VEC_quick_push (tree, BINFO_BASE_BINFOS (expr), t); } while (t); BINFO_OFFSET (expr) = stream_read_tree (ib, data_in); BINFO_VTABLE (expr) = stream_read_tree (ib, data_in); BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in); len = streamer_read_uhwi (ib); if (len > 0) { VEC_reserve_exact (tree, gc, BINFO_BASE_ACCESSES (expr), len); for (i = 0; i < len; i++) { tree a = stream_read_tree (ib, data_in); VEC_quick_push (tree, BINFO_BASE_ACCESSES (expr), a); } } BINFO_INHERITANCE_CHAIN (expr) = stream_read_tree (ib, data_in); BINFO_SUBVTT_INDEX (expr) = stream_read_tree (ib, data_in); BINFO_VPTR_INDEX (expr) = stream_read_tree (ib, data_in); } /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { unsigned i, len; len = streamer_read_uhwi (ib); for (i = 0; i < len; i++) { tree index, value; index = stream_read_tree (ib, data_in); value = stream_read_tree (ib, data_in); CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (expr), index, value); } } /* Input a TS_TARGET_OPTION tree from IB into EXPR. */ static void lto_input_ts_target_option (struct lto_input_block *ib, tree expr) { unsigned i, len; struct bitpack_d bp; struct cl_target_option *t = TREE_TARGET_OPTION (expr); bp = streamer_read_bitpack (ib); len = sizeof (struct cl_target_option); for (i = 0; i < len; i++) ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8); if (bp_unpack_value (&bp, 32) != 0x12345678) fatal_error ("cl_target_option size mismatch in LTO reader and writer"); } /* Input a TS_OPTIMIZATION tree from IB into EXPR. */ static void lto_input_ts_optimization (struct lto_input_block *ib, tree expr) { unsigned i, len; struct bitpack_d bp; struct cl_optimization *t = TREE_OPTIMIZATION (expr); bp = streamer_read_bitpack (ib); len = sizeof (struct cl_optimization); for (i = 0; i < len; i++) ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8); if (bp_unpack_value (&bp, 32) != 0x12345678) fatal_error ("cl_optimization size mismatch in LTO reader and writer"); } /* Input a TS_TRANSLATION_UNIT_DECL tree from IB and DATA_IN into EXPR. */ static void lto_input_ts_translation_unit_decl_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (streamer_read_string (data_in, ib)); VEC_safe_push (tree, gc, all_translation_units, expr); } /* Read all pointer fields in EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ void streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in, tree expr) { enum tree_code code; code = TREE_CODE (expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) lto_input_ts_common_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) lto_input_ts_vector_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) lto_input_ts_complex_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) lto_input_ts_decl_common_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) lto_input_ts_field_decl_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) lto_input_ts_function_decl_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) lto_input_ts_type_common_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_LIST)) lto_input_ts_list_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_VEC)) lto_input_ts_vec_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_EXP)) lto_input_ts_exp_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) lto_input_ts_block_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) lto_input_ts_binfo_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) lto_input_ts_constructor_tree_pointers (ib, data_in, expr); if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION)) lto_input_ts_target_option (ib, expr); if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) lto_input_ts_optimization (ib, expr); if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) lto_input_ts_translation_unit_decl_tree_pointers (ib, data_in, expr); } /* Read and INTEGER_CST node from input block IB using the per-file context in DATA_IN. */ tree streamer_read_integer_cst (struct lto_input_block *ib, struct data_in *data_in) { tree result, type; HOST_WIDE_INT low, high; bool overflow_p; type = stream_read_tree (ib, data_in); overflow_p = (streamer_read_uchar (ib) != 0); low = streamer_read_uhwi (ib); high = streamer_read_uhwi (ib); result = build_int_cst_wide (type, low, high); /* If the original constant had overflown, build a replica of RESULT to avoid modifying the shared constant returned by build_int_cst_wide. */ if (overflow_p) { result = copy_node (result); TREE_OVERFLOW (result) = 1; } return result; } /* Read an index IX from input block IB and return the tree node at DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */ tree streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in) { unsigned HOST_WIDE_INT ix; tree result; enum LTO_tags expected_tag; ix = streamer_read_uhwi (ib); expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS); result = streamer_tree_cache_get (data_in->reader_cache, ix); gcc_assert (result && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag)); return result; } /* Read a code and class from input block IB and return the corresponding builtin. DATA_IN is as in stream_read_tree. */ tree streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in) { enum built_in_class fclass; enum built_in_function fcode; const char *asmname; tree result; fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST); gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD); fcode = (enum built_in_function) streamer_read_uhwi (ib); if (fclass == BUILT_IN_NORMAL) { if (fcode >= END_BUILTINS) fatal_error ("machine independent builtin code out of range"); result = builtin_decl_explicit (fcode); gcc_assert (result); } else if (fclass == BUILT_IN_MD) { result = targetm.builtin_decl (fcode, true); if (!result || result == error_mark_node) fatal_error ("target specific builtin not available"); } else gcc_unreachable (); asmname = streamer_read_string (data_in, ib); if (asmname) set_builtin_user_assembler_name (result, asmname); streamer_tree_cache_append (data_in->reader_cache, result); return result; }
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