/* Routines for emitting trees to a file stream. Copyright (C) 2011-2013 Free Software Foundation, Inc. Contributed by Diego Novillo 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 . */ #include "config.h" #include "system.h" #include "coretypes.h" #include "tm.h" #include "diagnostic.h" #include "tree.h" #include "stor-layout.h" #include "basic-block.h" #include "tree-ssa-alias.h" #include "internal-fn.h" #include "gimple-expr.h" #include "is-a.h" #include "gimple.h" #include "tree-streamer.h" #include "data-streamer.h" #include "streamer-hooks.h" /* Output the STRING constant to the string table in OB. Then put the index onto the INDEX_STREAM. */ void streamer_write_string_cst (struct output_block *ob, struct lto_output_stream *index_stream, tree string) { streamer_write_string_with_length (ob, index_stream, string ? TREE_STRING_POINTER (string) : NULL, string ? TREE_STRING_LENGTH (string) : 0, true); } /* Output the identifier ID to the string table in OB. Then put the index onto the INDEX_STREAM. */ static void write_identifier (struct output_block *ob, struct lto_output_stream *index_stream, tree id) { streamer_write_string_with_length (ob, index_stream, IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id), true); } /* Pack all the non-pointer fields of the TS_BASE structure of expression EXPR into bitpack BP. */ static void pack_ts_base_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_value (bp, TREE_CODE (expr), 16); if (!TYPE_P (expr)) { bp_pack_value (bp, TREE_SIDE_EFFECTS (expr), 1); bp_pack_value (bp, TREE_CONSTANT (expr), 1); bp_pack_value (bp, TREE_READONLY (expr), 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. */ bp_pack_value (bp, TREE_PUBLIC (expr), 1); } else bp_pack_value (bp, 0, 4); bp_pack_value (bp, TREE_ADDRESSABLE (expr), 1); bp_pack_value (bp, TREE_THIS_VOLATILE (expr), 1); if (DECL_P (expr)) bp_pack_value (bp, DECL_UNSIGNED (expr), 1); else if (TYPE_P (expr)) bp_pack_value (bp, TYPE_UNSIGNED (expr), 1); else bp_pack_value (bp, 0, 1); /* We write debug info two times, do not confuse the second one. The only relevant TREE_ASM_WRITTEN use is on SSA names. */ bp_pack_value (bp, (TREE_CODE (expr) != SSA_NAME ? 0 : TREE_ASM_WRITTEN (expr)), 1); if (TYPE_P (expr)) bp_pack_value (bp, TYPE_ARTIFICIAL (expr), 1); else bp_pack_value (bp, TREE_NO_WARNING (expr), 1); bp_pack_value (bp, TREE_NOTHROW (expr), 1); bp_pack_value (bp, TREE_STATIC (expr), 1); if (TREE_CODE (expr) != TREE_BINFO) bp_pack_value (bp, TREE_PRIVATE (expr), 1); bp_pack_value (bp, TREE_PROTECTED (expr), 1); bp_pack_value (bp, TREE_DEPRECATED (expr), 1); if (TYPE_P (expr)) { bp_pack_value (bp, TYPE_SATURATING (expr), 1); bp_pack_value (bp, TYPE_ADDR_SPACE (expr), 8); } else if (TREE_CODE (expr) == SSA_NAME) bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1); else bp_pack_value (bp, 0, 1); } /* Pack all the non-pointer fields of the TS_INTEGER_CST structure of expression EXPR into bitpack BP. */ static void pack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_var_len_unsigned (bp, TREE_INT_CST_LOW (expr)); bp_pack_var_len_int (bp, TREE_INT_CST_HIGH (expr)); } /* Pack all the non-pointer fields of the TS_REAL_CST structure of expression EXPR into bitpack BP. */ static void pack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr) { unsigned i; REAL_VALUE_TYPE r; r = TREE_REAL_CST (expr); bp_pack_value (bp, r.cl, 2); bp_pack_value (bp, r.decimal, 1); bp_pack_value (bp, r.sign, 1); bp_pack_value (bp, r.signalling, 1); bp_pack_value (bp, r.canonical, 1); bp_pack_value (bp, r.uexp, EXP_BITS); for (i = 0; i < SIGSZ; i++) bp_pack_value (bp, r.sig[i], HOST_BITS_PER_LONG); } /* Pack all the non-pointer fields of the TS_FIXED_CST structure of expression EXPR into bitpack BP. */ static void pack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr) { struct fixed_value fv = TREE_FIXED_CST (expr); bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, fv.mode); bp_pack_var_len_int (bp, fv.data.low); bp_pack_var_len_int (bp, fv.data.high); } /* Pack all the non-pointer fields of the TS_DECL_COMMON structure of expression EXPR into bitpack BP. */ static void pack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, DECL_MODE (expr)); bp_pack_value (bp, DECL_NONLOCAL (expr), 1); bp_pack_value (bp, DECL_VIRTUAL_P (expr), 1); bp_pack_value (bp, DECL_IGNORED_P (expr), 1); bp_pack_value (bp, DECL_ABSTRACT (expr), 1); bp_pack_value (bp, DECL_ARTIFICIAL (expr), 1); bp_pack_value (bp, DECL_USER_ALIGN (expr), 1); bp_pack_value (bp, DECL_PRESERVE_P (expr), 1); bp_pack_value (bp, DECL_EXTERNAL (expr), 1); bp_pack_value (bp, DECL_GIMPLE_REG_P (expr), 1); bp_pack_var_len_unsigned (bp, DECL_ALIGN (expr)); if (TREE_CODE (expr) == LABEL_DECL) { /* Note that we do not write LABEL_DECL_UID. The reader will always assume an initial value of -1 so that the label_to_block_map is recreated by gimple_set_bb. */ bp_pack_var_len_unsigned (bp, EH_LANDING_PAD_NR (expr)); } if (TREE_CODE (expr) == FIELD_DECL) { bp_pack_value (bp, DECL_PACKED (expr), 1); bp_pack_value (bp, DECL_NONADDRESSABLE_P (expr), 1); bp_pack_value (bp, expr->decl_common.off_align, 8); } if (TREE_CODE (expr) == VAR_DECL) { bp_pack_value (bp, DECL_HAS_DEBUG_EXPR_P (expr), 1); bp_pack_value (bp, DECL_NONLOCAL_FRAME (expr), 1); } if (TREE_CODE (expr) == RESULT_DECL || TREE_CODE (expr) == PARM_DECL || TREE_CODE (expr) == VAR_DECL) { bp_pack_value (bp, DECL_BY_REFERENCE (expr), 1); if (TREE_CODE (expr) == VAR_DECL || TREE_CODE (expr) == PARM_DECL) bp_pack_value (bp, DECL_HAS_VALUE_EXPR_P (expr), 1); } } /* Pack all the non-pointer fields of the TS_DECL_WRTL structure of expression EXPR into bitpack BP. */ static void pack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_value (bp, DECL_REGISTER (expr), 1); } /* Pack all the non-pointer fields of the TS_DECL_WITH_VIS structure of expression EXPR into bitpack BP. */ static void pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_value (bp, DECL_COMMON (expr), 1); bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1); bp_pack_value (bp, DECL_WEAK (expr), 1); bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1); bp_pack_value (bp, DECL_COMDAT (expr), 1); bp_pack_value (bp, DECL_VISIBILITY (expr), 2); bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1); if (TREE_CODE (expr) == VAR_DECL) { bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1); /* DECL_IN_TEXT_SECTION is set during final asm output only. */ bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1); bp_pack_value (bp, DECL_TLS_MODEL (expr), 3); } if (TREE_CODE (expr) == FUNCTION_DECL) { bp_pack_value (bp, DECL_FINAL_P (expr), 1); bp_pack_value (bp, DECL_CXX_CONSTRUCTOR_P (expr), 1); bp_pack_value (bp, DECL_CXX_DESTRUCTOR_P (expr), 1); } if (VAR_OR_FUNCTION_DECL_P (expr)) bp_pack_var_len_unsigned (bp, DECL_INIT_PRIORITY (expr)); } /* Pack all the non-pointer fields of the TS_FUNCTION_DECL structure of expression EXPR into bitpack BP. */ static void pack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr) { /* For normal/md builtins we only write the class and code, so they should never be handled here. */ gcc_assert (!streamer_handle_as_builtin_p (expr)); bp_pack_enum (bp, built_in_class, BUILT_IN_LAST, DECL_BUILT_IN_CLASS (expr)); bp_pack_value (bp, DECL_STATIC_CONSTRUCTOR (expr), 1); bp_pack_value (bp, DECL_STATIC_DESTRUCTOR (expr), 1); bp_pack_value (bp, DECL_UNINLINABLE (expr), 1); bp_pack_value (bp, DECL_POSSIBLY_INLINED (expr), 1); bp_pack_value (bp, DECL_IS_NOVOPS (expr), 1); bp_pack_value (bp, DECL_IS_RETURNS_TWICE (expr), 1); bp_pack_value (bp, DECL_IS_MALLOC (expr), 1); bp_pack_value (bp, DECL_IS_OPERATOR_NEW (expr), 1); bp_pack_value (bp, DECL_DECLARED_INLINE_P (expr), 1); bp_pack_value (bp, DECL_STATIC_CHAIN (expr), 1); bp_pack_value (bp, DECL_NO_INLINE_WARNING_P (expr), 1); bp_pack_value (bp, DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr), 1); bp_pack_value (bp, DECL_NO_LIMIT_STACK (expr), 1); bp_pack_value (bp, DECL_DISREGARD_INLINE_LIMITS (expr), 1); bp_pack_value (bp, DECL_PURE_P (expr), 1); bp_pack_value (bp, DECL_LOOPING_CONST_OR_PURE_P (expr), 1); if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN) bp_pack_value (bp, DECL_FUNCTION_CODE (expr), 11); if (DECL_STATIC_DESTRUCTOR (expr)) bp_pack_var_len_unsigned (bp, DECL_FINI_PRIORITY (expr)); } /* Pack all the non-pointer fields of the TS_TYPE_COMMON structure of expression EXPR into bitpack BP. */ static void pack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr) { bp_pack_enum (bp, machine_mode, MAX_MACHINE_MODE, TYPE_MODE (expr)); bp_pack_value (bp, TYPE_STRING_FLAG (expr), 1); bp_pack_value (bp, TYPE_NO_FORCE_BLK (expr), 1); bp_pack_value (bp, TYPE_NEEDS_CONSTRUCTING (expr), 1); if (RECORD_OR_UNION_TYPE_P (expr)) { bp_pack_value (bp, TYPE_TRANSPARENT_AGGR (expr), 1); bp_pack_value (bp, TYPE_FINAL_P (expr), 1); } else if (TREE_CODE (expr) == ARRAY_TYPE) bp_pack_value (bp, TYPE_NONALIASED_COMPONENT (expr), 1); bp_pack_value (bp, TYPE_PACKED (expr), 1); bp_pack_value (bp, TYPE_RESTRICT (expr), 1); bp_pack_value (bp, TYPE_USER_ALIGN (expr), 1); bp_pack_value (bp, TYPE_READONLY (expr), 1); bp_pack_var_len_unsigned (bp, TYPE_PRECISION (expr)); bp_pack_var_len_unsigned (bp, TYPE_ALIGN (expr)); /* Make sure to preserve the fact whether the frontend would assign alias-set zero to this type. */ bp_pack_var_len_int (bp, (TYPE_ALIAS_SET (expr) == 0 || (!in_lto_p && get_alias_set (expr) == 0)) ? 0 : -1); } /* Pack all the non-pointer fields of the TS_BLOCK structure of expression EXPR into bitpack BP. */ static void pack_ts_block_value_fields (struct output_block *ob, struct bitpack_d *bp, tree expr) { bp_pack_value (bp, BLOCK_ABSTRACT (expr), 1); /* BLOCK_NUMBER is recomputed. */ /* Stream BLOCK_SOURCE_LOCATION for the limited cases we can handle - those that represent inlined function scopes. For the rest them on the floor instead of ICEing in dwarf2out.c. */ if (inlined_function_outer_scope_p (expr)) stream_output_location (ob, bp, BLOCK_SOURCE_LOCATION (expr)); else stream_output_location (ob, bp, UNKNOWN_LOCATION); } /* Pack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL structure of expression EXPR into bitpack BP. */ static void pack_ts_translation_unit_decl_value_fields (struct output_block *ob, struct bitpack_d *bp, tree expr) { bp_pack_string (ob, bp, TRANSLATION_UNIT_LANGUAGE (expr), true); } /* Pack a TS_TARGET_OPTION tree in EXPR to BP. */ static void pack_ts_target_option (struct bitpack_d *bp, tree expr) { struct cl_target_option *t = TREE_TARGET_OPTION (expr); unsigned i, len; /* The cl_target_option is target specific and generated by the options awk script, so we just recreate a byte-by-byte copy here. */ len = sizeof (struct cl_target_option); for (i = 0; i < len; i++) bp_pack_value (bp, ((unsigned char *)t)[i], 8); /* Catch struct size mismatches between reader and writer. */ bp_pack_value (bp, 0x12345678, 32); } /* Pack a TS_OPTIMIZATION tree in EXPR to BP. */ static void pack_ts_optimization (struct bitpack_d *bp, tree expr) { struct cl_optimization *t = TREE_OPTIMIZATION (expr); unsigned i, len; /* The cl_optimization is generated by the options awk script, so we just recreate a byte-by-byte copy here. */ len = sizeof (struct cl_optimization); for (i = 0; i < len; i++) bp_pack_value (bp, ((unsigned char *)t)[i], 8); /* Catch struct size mismatches between reader and writer. */ bp_pack_value (bp, 0x12345678, 32); } /* Pack all the bitfields in EXPR into a bit pack. */ void streamer_pack_tree_bitfields (struct output_block *ob, 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. */ pack_ts_base_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_INT_CST)) pack_ts_int_cst_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST)) pack_ts_real_cst_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST)) pack_ts_fixed_cst_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) stream_output_location (ob, bp, DECL_SOURCE_LOCATION (expr)); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) pack_ts_decl_common_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) pack_ts_decl_wrtl_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) pack_ts_decl_with_vis_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) pack_ts_function_decl_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) pack_ts_type_common_value_fields (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_EXP)) stream_output_location (ob, bp, EXPR_LOCATION (expr)); if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) pack_ts_block_value_fields (ob, bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) pack_ts_translation_unit_decl_value_fields (ob, bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION)) pack_ts_target_option (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) pack_ts_optimization (bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) bp_pack_var_len_unsigned (bp, vec_safe_length (BINFO_BASE_ACCESSES (expr))); if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) bp_pack_var_len_unsigned (bp, CONSTRUCTOR_NELTS (expr)); } /* Write the code and class of builtin EXPR to output block OB. IX is the index into the streamer cache where EXPR is stored.*/ void streamer_write_builtin (struct output_block *ob, tree expr) { gcc_assert (streamer_handle_as_builtin_p (expr)); if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD && !targetm.builtin_decl) sorry ("tree bytecode streams do not support machine specific builtin " "functions on this target"); streamer_write_record_start (ob, LTO_builtin_decl); streamer_write_enum (ob->main_stream, built_in_class, BUILT_IN_LAST, DECL_BUILT_IN_CLASS (expr)); streamer_write_uhwi (ob, DECL_FUNCTION_CODE (expr)); if (DECL_ASSEMBLER_NAME_SET_P (expr)) { /* When the assembler name of a builtin gets a user name, the new name is always prefixed with '*' by set_builtin_user_assembler_name. So, to prevent the reader side from adding a second '*', we omit it here. */ const char *str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (expr)); if (strlen (str) > 1 && str[0] == '*') streamer_write_string (ob, ob->main_stream, &str[1], true); else streamer_write_string (ob, ob->main_stream, NULL, true); } else streamer_write_string (ob, ob->main_stream, NULL, true); } /* Emit the chain of tree nodes starting at T. OB is the output block to write to. REF_P is true if chain elements should be emitted as references. */ void streamer_write_chain (struct output_block *ob, tree t, bool ref_p) { while (t) { tree saved_chain; /* Clear TREE_CHAIN to avoid blindly recursing into the rest of the list. */ saved_chain = TREE_CHAIN (t); TREE_CHAIN (t) = NULL_TREE; /* We avoid outputting external vars or functions by reference to the global decls section as we do not want to have them enter decl merging. This is, of course, only for the call for streaming BLOCK_VARS, but other callers are safe. */ /* ??? FIXME wrt SCC streaming. Drop these for now. */ if (VAR_OR_FUNCTION_DECL_P (t) && DECL_EXTERNAL (t)) ; /* stream_write_tree_shallow_non_ref (ob, t, ref_p); */ else stream_write_tree (ob, t, ref_p); TREE_CHAIN (t) = saved_chain; t = TREE_CHAIN (t); } /* Write a sentinel to terminate the chain. */ stream_write_tree (ob, NULL_TREE, ref_p); } /* Write all pointer fields in the TS_COMMON structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { if (TREE_CODE (expr) != IDENTIFIER_NODE) stream_write_tree (ob, TREE_TYPE (expr), ref_p); } /* Write all pointer fields in the TS_VECTOR structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_vector_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { unsigned i; /* Note that the number of elements for EXPR has already been emitted in EXPR's header (see streamer_write_tree_header). */ for (i = 0; i < VECTOR_CST_NELTS (expr); ++i) stream_write_tree (ob, VECTOR_CST_ELT (expr, i), ref_p); } /* Write all pointer fields in the TS_COMPLEX structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_complex_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { stream_write_tree (ob, TREE_REALPART (expr), ref_p); stream_write_tree (ob, TREE_IMAGPART (expr), ref_p); } /* Write all pointer fields in the TS_DECL_MINIMAL structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_decl_minimal_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { /* Drop names that were created for anonymous entities. */ if (DECL_NAME (expr) && TREE_CODE (DECL_NAME (expr)) == IDENTIFIER_NODE && ANON_AGGRNAME_P (DECL_NAME (expr))) stream_write_tree (ob, NULL_TREE, ref_p); else stream_write_tree (ob, DECL_NAME (expr), ref_p); stream_write_tree (ob, DECL_CONTEXT (expr), ref_p); } /* Write all pointer fields in the TS_DECL_COMMON structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_decl_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { stream_write_tree (ob, DECL_SIZE (expr), ref_p); stream_write_tree (ob, DECL_SIZE_UNIT (expr), ref_p); /* Note, DECL_INITIAL is not handled here. Since DECL_INITIAL needs special handling in LTO, it must be handled by streamer hooks. */ stream_write_tree (ob, DECL_ATTRIBUTES (expr), ref_p); /* 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) == VAR_DECL || TREE_CODE (expr) == PARM_DECL) && DECL_HAS_VALUE_EXPR_P (expr)) stream_write_tree (ob, DECL_VALUE_EXPR (expr), ref_p); if (TREE_CODE (expr) == VAR_DECL) stream_write_tree (ob, DECL_DEBUG_EXPR (expr), ref_p); } /* Write all pointer fields in the TS_DECL_NON_COMMON structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_decl_non_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { if (TREE_CODE (expr) == TYPE_DECL) stream_write_tree (ob, DECL_ORIGINAL_TYPE (expr), ref_p); stream_write_tree (ob, DECL_VINDEX (expr), ref_p); } /* Write all pointer fields in the TS_DECL_WITH_VIS structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_decl_with_vis_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { /* Make sure we don't inadvertently set the assembler name. */ if (DECL_ASSEMBLER_NAME_SET_P (expr)) stream_write_tree (ob, DECL_ASSEMBLER_NAME (expr), ref_p); else stream_write_tree (ob, NULL_TREE, false); stream_write_tree (ob, DECL_SECTION_NAME (expr), ref_p); stream_write_tree (ob, DECL_COMDAT_GROUP (expr), ref_p); } /* Write all pointer fields in the TS_FIELD_DECL structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_field_decl_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { stream_write_tree (ob, DECL_FIELD_OFFSET (expr), ref_p); stream_write_tree (ob, DECL_BIT_FIELD_TYPE (expr), ref_p); stream_write_tree (ob, DECL_BIT_FIELD_REPRESENTATIVE (expr), ref_p); stream_write_tree (ob, DECL_FIELD_BIT_OFFSET (expr), ref_p); stream_write_tree (ob, DECL_FCONTEXT (expr), ref_p); } /* Write all pointer fields in the TS_FUNCTION_DECL structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_function_decl_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { /* DECL_STRUCT_FUNCTION is handled by lto_output_function. FIXME lto, maybe it should be handled here? */ stream_write_tree (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p); stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p); stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr), ref_p); } /* Write all pointer fields in the TS_TYPE_COMMON structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_type_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { stream_write_tree (ob, TYPE_SIZE (expr), ref_p); stream_write_tree (ob, TYPE_SIZE_UNIT (expr), ref_p); stream_write_tree (ob, TYPE_ATTRIBUTES (expr), ref_p); stream_write_tree (ob, TYPE_NAME (expr), ref_p); /* 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. */ stream_write_tree (ob, TYPE_MAIN_VARIANT (expr), ref_p); stream_write_tree (ob, TYPE_CONTEXT (expr), ref_p); /* TYPE_CANONICAL is re-computed during type merging, so no need to stream it here. */ stream_write_tree (ob, TYPE_STUB_DECL (expr), ref_p); } /* Write all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_type_non_common_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { if (TREE_CODE (expr) == ENUMERAL_TYPE) stream_write_tree (ob, TYPE_VALUES (expr), ref_p); else if (TREE_CODE (expr) == ARRAY_TYPE) stream_write_tree (ob, TYPE_DOMAIN (expr), ref_p); else if (RECORD_OR_UNION_TYPE_P (expr)) streamer_write_chain (ob, TYPE_FIELDS (expr), ref_p); else if (TREE_CODE (expr) == FUNCTION_TYPE || TREE_CODE (expr) == METHOD_TYPE) stream_write_tree (ob, TYPE_ARG_TYPES (expr), ref_p); if (!POINTER_TYPE_P (expr)) stream_write_tree (ob, TYPE_MINVAL (expr), ref_p); stream_write_tree (ob, TYPE_MAXVAL (expr), ref_p); if (RECORD_OR_UNION_TYPE_P (expr)) stream_write_tree (ob, TYPE_BINFO (expr), ref_p); } /* Write all pointer fields in the TS_LIST structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_list_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { stream_write_tree (ob, TREE_PURPOSE (expr), ref_p); stream_write_tree (ob, TREE_VALUE (expr), ref_p); stream_write_tree (ob, TREE_CHAIN (expr), ref_p); } /* Write all pointer fields in the TS_VEC structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_vec_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { int i; /* Note that the number of slots for EXPR has already been emitted in EXPR's header (see streamer_write_tree_header). */ for (i = 0; i < TREE_VEC_LENGTH (expr); i++) stream_write_tree (ob, TREE_VEC_ELT (expr, i), ref_p); } /* Write all pointer fields in the TS_EXP structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_exp_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { int i; for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++) stream_write_tree (ob, TREE_OPERAND (expr, i), ref_p); stream_write_tree (ob, TREE_BLOCK (expr), ref_p); } /* Write all pointer fields in the TS_BLOCK structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_block_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { streamer_write_chain (ob, BLOCK_VARS (expr), ref_p); stream_write_tree (ob, BLOCK_SUPERCONTEXT (expr), ref_p); /* Stream BLOCK_ABSTRACT_ORIGIN for the limited cases we can handle - those that represent inlined function scopes. For the rest them on the floor instead of ICEing in dwarf2out.c. */ if (inlined_function_outer_scope_p (expr)) { tree ultimate_origin = block_ultimate_origin (expr); stream_write_tree (ob, ultimate_origin, ref_p); } else stream_write_tree (ob, NULL_TREE, ref_p); /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information for early inlined BLOCKs so drop it on the floor instead of ICEing in dwarf2out.c. */ /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO streaming time. */ /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this list is re-constructed from BLOCK_SUPERCONTEXT. */ } /* Write all pointer fields in the TS_BINFO structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_binfo_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { unsigned i; tree t; /* Note that the number of BINFO slots has already been emitted in EXPR's header (see streamer_write_tree_header) because this length is needed to build the empty BINFO node on the reader side. */ FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (expr), i, t) stream_write_tree (ob, t, ref_p); stream_write_tree (ob, NULL_TREE, false); stream_write_tree (ob, BINFO_OFFSET (expr), ref_p); stream_write_tree (ob, BINFO_VTABLE (expr), ref_p); stream_write_tree (ob, BINFO_VPTR_FIELD (expr), ref_p); /* The number of BINFO_BASE_ACCESSES has already been emitted in EXPR's bitfield section. */ FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (expr), i, t) stream_write_tree (ob, t, ref_p); /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX and BINFO_VPTR_INDEX; these are used by C++ FE only. */ } /* Write all pointer fields in the TS_CONSTRUCTOR structure of EXPR to output block OB. If REF_P is true, write a reference to EXPR's pointer fields. */ static void write_ts_constructor_tree_pointers (struct output_block *ob, tree expr, bool ref_p) { unsigned i; tree index, value; FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (expr), i, index, value) { stream_write_tree (ob, index, ref_p); stream_write_tree (ob, value, ref_p); } } /* Write all pointer fields in EXPR to output block OB. If REF_P is true, the leaves of EXPR are emitted as references. */ void streamer_write_tree_body (struct output_block *ob, tree expr, bool ref_p) { enum tree_code code; lto_stats.num_tree_bodies_output++; code = TREE_CODE (expr); if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) write_ts_common_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) write_ts_vector_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) write_ts_complex_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) write_ts_decl_minimal_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) write_ts_decl_common_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) write_ts_decl_non_common_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) write_ts_decl_with_vis_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) write_ts_field_decl_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) write_ts_function_decl_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) write_ts_type_common_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) write_ts_type_non_common_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_LIST)) write_ts_list_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_VEC)) write_ts_vec_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_EXP)) write_ts_exp_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) write_ts_block_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) write_ts_binfo_tree_pointers (ob, expr, ref_p); if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) write_ts_constructor_tree_pointers (ob, expr, ref_p); } /* Emit header information for tree EXPR to output block OB. The header contains everything needed to instantiate an empty skeleton for EXPR on the reading side. IX is the index into the streamer cache where EXPR is stored. */ void streamer_write_tree_header (struct output_block *ob, tree expr) { enum LTO_tags tag; enum tree_code code; /* We should not see any tree nodes not handled by the streamer. */ code = TREE_CODE (expr); /* The header of a tree node consists of its tag, the size of the node, and any other information needed to instantiate EXPR on the reading side (such as the number of slots in variable sized nodes). */ tag = lto_tree_code_to_tag (code); streamer_write_record_start (ob, tag); /* The following will cause bootstrap miscomparisons. Enable with care. */ #ifdef LTO_STREAMER_DEBUG /* This is used mainly for debugging purposes. When the reader and the writer do not agree on a streamed node, the pointer value for EXPR can be used to track down the differences in the debugger. */ gcc_assert ((HOST_WIDEST_INT) (intptr_t) expr == (intptr_t) expr); streamer_write_hwi (ob, (HOST_WIDEST_INT) (intptr_t) expr); #endif /* The text in strings and identifiers are completely emitted in the header. */ if (CODE_CONTAINS_STRUCT (code, TS_STRING)) streamer_write_string_cst (ob, ob->main_stream, expr); else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER)) write_identifier (ob, ob->main_stream, expr); else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) streamer_write_hwi (ob, VECTOR_CST_NELTS (expr)); else if (CODE_CONTAINS_STRUCT (code, TS_VEC)) streamer_write_hwi (ob, TREE_VEC_LENGTH (expr)); else if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) streamer_write_uhwi (ob, BINFO_N_BASE_BINFOS (expr)); else if (TREE_CODE (expr) == CALL_EXPR) streamer_write_uhwi (ob, call_expr_nargs (expr)); } /* Emit the integer constant CST to output block OB. If REF_P is true, CST's type will be emitted as a reference. */ void streamer_write_integer_cst (struct output_block *ob, tree cst, bool ref_p) { gcc_assert (!TREE_OVERFLOW (cst)); streamer_write_record_start (ob, LTO_integer_cst); stream_write_tree (ob, TREE_TYPE (cst), ref_p); streamer_write_uhwi (ob, TREE_INT_CST_LOW (cst)); streamer_write_hwi (ob, TREE_INT_CST_HIGH (cst)); }