URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [lto-streamer.c] - Rev 702
Go to most recent revision | Compare with Previous | Blame | View Log
/* Miscellaneous utilities for GIMPLE streaming. Things that are used in both input and output are here. Copyright 2009, 2010 Free Software Foundation, Inc. Contributed by Doug Kwan <dougkwan@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 "tm.h" #include "toplev.h" #include "flags.h" #include "tree.h" #include "gimple.h" #include "tree-flow.h" #include "diagnostic-core.h" #include "bitmap.h" #include "vec.h" #include "tree-streamer.h" #include "lto-streamer.h" #include "streamer-hooks.h" /* Statistics gathered during LTO, WPA and LTRANS. */ struct lto_stats_d lto_stats; /* LTO uses bitmaps with different life-times. So use a seperate obstack for all LTO bitmaps. */ static bitmap_obstack lto_obstack; static bool lto_obstack_initialized; /* Return a string representing LTO tag TAG. */ const char * lto_tag_name (enum LTO_tags tag) { if (lto_tag_is_tree_code_p (tag)) { /* For tags representing tree nodes, return the name of the associated tree code. */ return tree_code_name[lto_tag_to_tree_code (tag)]; } if (lto_tag_is_gimple_code_p (tag)) { /* For tags representing gimple statements, return the name of the associated gimple code. */ return gimple_code_name[lto_tag_to_gimple_code (tag)]; } switch (tag) { case LTO_null: return "LTO_null"; case LTO_bb0: return "LTO_bb0"; case LTO_bb1: return "LTO_bb1"; case LTO_eh_region: return "LTO_eh_region"; case LTO_function: return "LTO_function"; case LTO_eh_table: return "LTO_eh_table"; case LTO_ert_cleanup: return "LTO_ert_cleanup"; case LTO_ert_try: return "LTO_ert_try"; case LTO_ert_allowed_exceptions: return "LTO_ert_allowed_exceptions"; case LTO_ert_must_not_throw: return "LTO_ert_must_not_throw"; case LTO_tree_pickle_reference: return "LTO_tree_pickle_reference"; case LTO_field_decl_ref: return "LTO_field_decl_ref"; case LTO_function_decl_ref: return "LTO_function_decl_ref"; case LTO_label_decl_ref: return "LTO_label_decl_ref"; case LTO_namespace_decl_ref: return "LTO_namespace_decl_ref"; case LTO_result_decl_ref: return "LTO_result_decl_ref"; case LTO_ssa_name_ref: return "LTO_ssa_name_ref"; case LTO_type_decl_ref: return "LTO_type_decl_ref"; case LTO_type_ref: return "LTO_type_ref"; case LTO_global_decl_ref: return "LTO_global_decl_ref"; default: return "LTO_UNKNOWN"; } } /* Allocate a bitmap from heap. Initializes the LTO obstack if necessary. */ bitmap lto_bitmap_alloc (void) { if (!lto_obstack_initialized) { bitmap_obstack_initialize (<o_obstack); lto_obstack_initialized = true; } return BITMAP_ALLOC (<o_obstack); } /* Free bitmap B. */ void lto_bitmap_free (bitmap b) { BITMAP_FREE (b); } /* Get a section name for a particular type or name. The NAME field is only used if SECTION_TYPE is LTO_section_function_body. For all others it is ignored. The callee of this function is responsible to free the returned name. */ char * lto_get_section_name (int section_type, const char *name, struct lto_file_decl_data *f) { const char *add; char post[32]; const char *sep; if (section_type == LTO_section_function_body) { gcc_assert (name != NULL); if (name[0] == '*') name++; add = name; sep = ""; } else if (section_type < LTO_N_SECTION_TYPES) { add = lto_section_name[section_type]; sep = "."; } else internal_error ("bytecode stream: unexpected LTO section %s", name); /* Make the section name unique so that ld -r combining sections doesn't confuse the reader with merged sections. For options don't add a ID, the option reader cannot deal with them and merging should be ok here. */ if (section_type == LTO_section_opts) strcpy (post, ""); else if (f != NULL) sprintf (post, "." HOST_WIDE_INT_PRINT_HEX_PURE, f->id); else sprintf (post, "." HOST_WIDE_INT_PRINT_HEX_PURE, get_random_seed (false)); return concat (LTO_SECTION_NAME_PREFIX, sep, add, post, NULL); } /* Show various memory usage statistics related to LTO. */ void print_lto_report (void) { const char *s = (flag_lto) ? "LTO" : (flag_wpa) ? "WPA" : "LTRANS"; unsigned i; fprintf (stderr, "%s statistics\n", s); fprintf (stderr, "[%s] # of input files: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_input_files); fprintf (stderr, "[%s] # of input cgraph nodes: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_input_cgraph_nodes); fprintf (stderr, "[%s] # of function bodies: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_function_bodies); fprintf (stderr, "[%s] ", s); print_gimple_types_stats (); for (i = 0; i < NUM_TREE_CODES; i++) if (lto_stats.num_trees[i]) fprintf (stderr, "[%s] # of '%s' objects read: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, tree_code_name[i], lto_stats.num_trees[i]); if (flag_lto) { fprintf (stderr, "[%s] Compression: " HOST_WIDE_INT_PRINT_UNSIGNED " output bytes, " HOST_WIDE_INT_PRINT_UNSIGNED " compressed bytes", s, lto_stats.num_output_il_bytes, lto_stats.num_compressed_il_bytes); if (lto_stats.num_output_il_bytes > 0) { const float dividend = (float) lto_stats.num_compressed_il_bytes; const float divisor = (float) lto_stats.num_output_il_bytes; fprintf (stderr, " (ratio: %f)", dividend / divisor); } fprintf (stderr, "\n"); } if (flag_wpa) { fprintf (stderr, "[%s] # of output files: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_output_files); fprintf (stderr, "[%s] # of output cgraph nodes: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_output_cgraph_nodes); fprintf (stderr, "[%s] # callgraph partitions: " HOST_WIDE_INT_PRINT_UNSIGNED "\n", s, lto_stats.num_cgraph_partitions); fprintf (stderr, "[%s] Compression: " HOST_WIDE_INT_PRINT_UNSIGNED " input bytes, " HOST_WIDE_INT_PRINT_UNSIGNED " uncompressed bytes", s, lto_stats.num_input_il_bytes, lto_stats.num_uncompressed_il_bytes); if (lto_stats.num_input_il_bytes > 0) { const float dividend = (float) lto_stats.num_uncompressed_il_bytes; const float divisor = (float) lto_stats.num_input_il_bytes; fprintf (stderr, " (ratio: %f)", dividend / divisor); } fprintf (stderr, "\n"); } for (i = 0; i < LTO_N_SECTION_TYPES; i++) fprintf (stderr, "[%s] Size of mmap'd section %s: " HOST_WIDE_INT_PRINT_UNSIGNED " bytes\n", s, lto_section_name[i], lto_stats.section_size[i]); } #ifdef LTO_STREAMER_DEBUG static htab_t tree_htab; struct tree_hash_entry { tree key; intptr_t value; }; static hashval_t hash_tree (const void *p) { const struct tree_hash_entry *e = (const struct tree_hash_entry *) p; return htab_hash_pointer (e->key); } static int eq_tree (const void *p1, const void *p2) { const struct tree_hash_entry *e1 = (const struct tree_hash_entry *) p1; const struct tree_hash_entry *e2 = (const struct tree_hash_entry *) p2; return (e1->key == e2->key); } #endif /* Initialization common to the LTO reader and writer. */ void lto_streamer_init (void) { /* Check that all the TS_* handled by the reader and writer routines match exactly the structures defined in treestruct.def. When a new TS_* astructure is added, the streamer should be updated to handle it. */ streamer_check_handled_ts_structures (); #ifdef LTO_STREAMER_DEBUG tree_htab = htab_create (31, hash_tree, eq_tree, NULL); #endif } /* Gate function for all LTO streaming passes. */ bool gate_lto_out (void) { return ((flag_generate_lto || in_lto_p) /* Don't bother doing anything if the program has errors. */ && !seen_error ()); } #ifdef LTO_STREAMER_DEBUG /* Add a mapping between T and ORIG_T, which is the numeric value of the original address of T as it was seen by the LTO writer. This mapping is useful when debugging streaming problems. A debugging session can be started on both reader and writer using ORIG_T as a breakpoint value in both sessions. Note that this mapping is transient and only valid while T is being reconstructed. Once T is fully built, the mapping is removed. */ void lto_orig_address_map (tree t, intptr_t orig_t) { struct tree_hash_entry ent; struct tree_hash_entry **slot; ent.key = t; ent.value = orig_t; slot = (struct tree_hash_entry **) htab_find_slot (tree_htab, &ent, INSERT); gcc_assert (!*slot); *slot = XNEW (struct tree_hash_entry); **slot = ent; } /* Get the original address of T as it was seen by the writer. This is only valid while T is being reconstructed. */ intptr_t lto_orig_address_get (tree t) { struct tree_hash_entry ent; struct tree_hash_entry **slot; ent.key = t; slot = (struct tree_hash_entry **) htab_find_slot (tree_htab, &ent, NO_INSERT); return (slot ? (*slot)->value : 0); } /* Clear the mapping of T to its original address. */ void lto_orig_address_remove (tree t) { struct tree_hash_entry ent; struct tree_hash_entry **slot; ent.key = t; slot = (struct tree_hash_entry **) htab_find_slot (tree_htab, &ent, NO_INSERT); gcc_assert (slot); free (*slot); htab_clear_slot (tree_htab, (PTR *)slot); } #endif /* Check that the version MAJOR.MINOR is the correct version number. */ void lto_check_version (int major, int minor) { if (major != LTO_major_version || minor != LTO_minor_version) fatal_error ("bytecode stream generated with LTO version %d.%d instead " "of the expected %d.%d", major, minor, LTO_major_version, LTO_minor_version); } /* Initialize all the streamer hooks used for streaming GIMPLE. */ void lto_streamer_hooks_init (void) { streamer_hooks_init (); streamer_hooks.write_tree = lto_output_tree; streamer_hooks.read_tree = lto_input_tree; }
Go to most recent revision | Compare with Previous | Blame | View Log