/* Routines for reading trees from a file stream. Copyright (C) 2011-2015 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 "diagnostic.h" #include "tree.h" #include "stringpool.h" #include "predict.h" #include "vec.h" #include "hashtab.h" #include "hash-set.h" #include "machmode.h" #include "tm.h" #include "hard-reg-set.h" #include "input.h" #include "function.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 "hash-map.h" #include "plugin-api.h" #include "ipa-ref.h" #include "cgraph.h" #include "tree-streamer.h" #include "data-streamer.h" #include "streamer-hooks.h" #include "lto-streamer.h" #include "builtins.h" #include "ipa-chkp.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) { tree first, prev, curr; /* The chain is written as NULL terminated list of trees. */ first = prev = NULL_TREE; do { curr = stream_read_tree (ib, data_in); if (prev) TREE_CHAIN (prev) = curr; else first = curr; prev = curr; } while (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_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1); TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1); if (TREE_CODE (expr) != TREE_BINFO) 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_INT_CST structure of expression EXPR from bitpack BP. */ static void unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr) { int i; for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++) TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp); } /* 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; /* Clear all bits of the real value type so that we can later do bitwise comparisons to see if two values are the same. */ memset (&r, 0, sizeof r); 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 (); 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) { FIXED_VALUE_TYPE *fp = ggc_alloc (); fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE); fp->data.low = bp_unpack_var_len_int (bp); fp->data.high = bp_unpack_var_len_int (bp); TREE_FIXED_CST_PTR (expr) = fp; } /* 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_P (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_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) { 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) == VAR_DECL) { DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1); } 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); } } /* 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_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_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1); } if (TREE_CODE (expr) == FUNCTION_DECL) { DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1); DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1); } } /* 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, 12); 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"); } } } /* 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) { 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_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1); } else if (TREE_CODE (expr) == ARRAY_TYPE) TYPE_NONALIASED_COMPONENT (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_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 data_in *data_in, struct bitpack_d *bp, tree expr) { BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1); /* BLOCK_NUMBER is recomputed. */ BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in); } /* 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 data_in *data_in, struct bitpack_d *bp, tree expr) { TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp)); vec_safe_push (all_translation_units, expr); } /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE structure of expression EXPR from bitpack BP. */ static void unpack_ts_omp_clause_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr) { OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in); switch (OMP_CLAUSE_CODE (expr)) { case OMP_CLAUSE_DEFAULT: OMP_CLAUSE_DEFAULT_KIND (expr) = bp_unpack_enum (bp, omp_clause_default_kind, OMP_CLAUSE_DEFAULT_LAST); break; case OMP_CLAUSE_SCHEDULE: OMP_CLAUSE_SCHEDULE_KIND (expr) = bp_unpack_enum (bp, omp_clause_schedule_kind, OMP_CLAUSE_SCHEDULE_LAST); break; case OMP_CLAUSE_DEPEND: OMP_CLAUSE_DEPEND_KIND (expr) = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST); break; case OMP_CLAUSE_MAP: OMP_CLAUSE_MAP_KIND (expr) = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST); break; case OMP_CLAUSE_PROC_BIND: OMP_CLAUSE_PROC_BIND_KIND (expr) = bp_unpack_enum (bp, omp_clause_proc_bind_kind, OMP_CLAUSE_PROC_BIND_LAST); break; case OMP_CLAUSE_REDUCTION: OMP_CLAUSE_REDUCTION_CODE (expr) = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES); break; default: break; } } /* Unpack all the non-pointer fields in EXPR into a bit pack. */ static void unpack_value_fields (struct data_in *data_in, 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_INT_CST)) unpack_ts_int_cst_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_MINIMAL)) DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in); 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_EXP)) { SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in)); if (code == MEM_REF || code == TARGET_MEM_REF) { MR_DEPENDENCE_CLIQUE (expr) = (unsigned)bp_unpack_value (bp, sizeof (short) * 8); if (MR_DEPENDENCE_CLIQUE (expr) != 0) MR_DEPENDENCE_BASE (expr) = (unsigned)bp_unpack_value (bp, sizeof (short) * 8); } } if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) unpack_ts_block_value_fields (data_in, bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr); if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) cl_optimization_stream_in (bp, TREE_OPTIMIZATION (expr)); if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) { unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp); if (length > 0) vec_safe_grow (BINFO_BASE_ACCESSES (expr), length); } if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) { unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp); if (length > 0) vec_safe_grow (CONSTRUCTOR_ELTS (expr), length); } if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION)) cl_target_option_stream_in (data_in, bp, TREE_TARGET_OPTION (expr)); if (code == OMP_CLAUSE) unpack_ts_omp_clause_value_fields (data_in, 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, struct data_in *data_in, 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 (data_in, &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_WIDE_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_VECTOR)) { HOST_WIDE_INT len = streamer_read_hwi (ib); result = make_vector (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_CONTAINS_STRUCT (code, TS_INT_CST)) { unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib); unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib); result = make_int_cst (len, ext_len); } else if (code == CALL_EXPR) { unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib); return build_vl_exp (CALL_EXPR, nargs + 3); } else if (code == OMP_CLAUSE) { enum omp_clause_code subcode = (enum omp_clause_code) streamer_read_uhwi (ib); return build_omp_clause (UNKNOWN_LOCATION, subcode); } 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) { unsigned i; for (i = 0; i < VECTOR_CST_NELTS (expr); ++i) VECTOR_CST_ELT (expr, i) = stream_read_tree (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); } /* 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) == 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) == TYPE_DECL) DECL_ORIGINAL_TYPE (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); } } /* 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); DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in); 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_VINDEX (expr) = stream_read_tree (ib, data_in); /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */ 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) = stream_read_tree (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; for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++) TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in); TREE_SET_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) { BLOCK_VARS (expr) = streamer_read_chain (ib, data_in); BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in); /* Stream BLOCK_ABSTRACT_ORIGIN and 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. */ BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in); /* 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. */ /* 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; 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) BINFO_BASE_BINFOS (expr)->quick_push (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); /* The vector of BINFO_BASE_ACCESSES is pre-allocated during unpacking the bitfield section. */ for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++) { tree a = stream_read_tree (ib, data_in); (*BINFO_BASE_ACCESSES (expr))[i] = a; } /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX and BINFO_VPTR_INDEX; these are used by C++ FE only. */ } /* 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; for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++) { constructor_elt e; e.index = stream_read_tree (ib, data_in); e.value = stream_read_tree (ib, data_in); (*CONSTRUCTOR_ELTS (expr))[i] = e; } } /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from input block IB. DATA_IN contains tables and descriptors for the file being read. */ static void lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib, struct data_in *data_in, tree expr) { int i; for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++) OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in); OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in); } /* 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 == OMP_CLAUSE) lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr); } /* 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_tree (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); if (!result && fcode > BEGIN_CHKP_BUILTINS && fcode < END_CHKP_BUILTINS) { fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1); result = builtin_decl_explicit (fcode); result = chkp_maybe_clone_builtin_fndecl (result); } 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, 0); return result; }