| /* Optimization statistics functions. |
| Copyright (C) 2008-2017 Free Software Foundation, Inc. |
| Contributed by Richard Guenther <rguenther@suse.de> |
| |
| 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 "function.h" |
| #include "tree-pass.h" |
| #include "context.h" |
| #include "pass_manager.h" |
| |
| static int statistics_dump_nr; |
| static int statistics_dump_flags; |
| static FILE *statistics_dump_file; |
| |
| /* Statistics entry. A integer counter associated to a string ID |
| and value. */ |
| |
| struct statistics_counter { |
| const char *id; |
| int val; |
| bool histogram_p; |
| unsigned HOST_WIDE_INT count; |
| unsigned HOST_WIDE_INT prev_dumped_count; |
| }; |
| |
| /* Hashtable helpers. */ |
| |
| struct stats_counter_hasher : pointer_hash <statistics_counter> |
| { |
| static inline hashval_t hash (const statistics_counter *); |
| static inline bool equal (const statistics_counter *, |
| const statistics_counter *); |
| static inline void remove (statistics_counter *); |
| }; |
| |
| /* Hash a statistic counter by its string ID. */ |
| |
| inline hashval_t |
| stats_counter_hasher::hash (const statistics_counter *c) |
| { |
| return htab_hash_string (c->id) + c->val; |
| } |
| |
| /* Compare two statistic counters by their string IDs. */ |
| |
| inline bool |
| stats_counter_hasher::equal (const statistics_counter *c1, |
| const statistics_counter *c2) |
| { |
| return c1->val == c2->val && strcmp (c1->id, c2->id) == 0; |
| } |
| |
| /* Free a statistics entry. */ |
| |
| inline void |
| stats_counter_hasher::remove (statistics_counter *v) |
| { |
| free (CONST_CAST (char *, v->id)); |
| free (v); |
| } |
| |
| typedef hash_table<stats_counter_hasher> stats_counter_table_type; |
| |
| /* Array of statistic hashes, indexed by pass id. */ |
| static stats_counter_table_type **statistics_hashes; |
| static unsigned nr_statistics_hashes; |
| |
| /* Return the current hashtable to be used for recording or printing |
| statistics. */ |
| |
| static stats_counter_table_type * |
| curr_statistics_hash (void) |
| { |
| unsigned idx; |
| |
| gcc_assert (current_pass->static_pass_number >= 0); |
| idx = current_pass->static_pass_number; |
| |
| if (idx < nr_statistics_hashes |
| && statistics_hashes[idx]) |
| return statistics_hashes[idx]; |
| |
| if (idx >= nr_statistics_hashes) |
| { |
| statistics_hashes = XRESIZEVEC (stats_counter_table_type *, |
| statistics_hashes, idx+1); |
| memset (statistics_hashes + nr_statistics_hashes, 0, |
| (idx + 1 - nr_statistics_hashes) |
| * sizeof (stats_counter_table_type *)); |
| nr_statistics_hashes = idx + 1; |
| } |
| |
| statistics_hashes[idx] = new stats_counter_table_type (15); |
| |
| return statistics_hashes[idx]; |
| } |
| |
| /* Helper for statistics_fini_pass. Print the counter difference |
| since the last dump for the pass dump files. */ |
| |
| int |
| statistics_fini_pass_1 (statistics_counter **slot, |
| void *data ATTRIBUTE_UNUSED) |
| { |
| statistics_counter *counter = *slot; |
| unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; |
| if (count == 0) |
| return 1; |
| if (counter->histogram_p) |
| fprintf (dump_file, "%s == %d: " HOST_WIDE_INT_PRINT_DEC "\n", |
| counter->id, counter->val, count); |
| else |
| fprintf (dump_file, "%s: " HOST_WIDE_INT_PRINT_DEC "\n", |
| counter->id, count); |
| counter->prev_dumped_count = counter->count; |
| return 1; |
| } |
| |
| /* Helper for statistics_fini_pass. Print the counter difference |
| since the last dump for the statistics dump. */ |
| |
| int |
| statistics_fini_pass_2 (statistics_counter **slot, |
| void *data ATTRIBUTE_UNUSED) |
| { |
| statistics_counter *counter = *slot; |
| unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; |
| if (count == 0) |
| return 1; |
| counter->prev_dumped_count = counter->count; |
| if (counter->histogram_p) |
| fprintf (statistics_dump_file, |
| "%d %s \"%s == %d\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", |
| current_pass->static_pass_number, |
| current_pass->name, |
| counter->id, counter->val, |
| current_function_name (), |
| count); |
| else |
| fprintf (statistics_dump_file, |
| "%d %s \"%s\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", |
| current_pass->static_pass_number, |
| current_pass->name, |
| counter->id, |
| current_function_name (), |
| count); |
| counter->prev_dumped_count = counter->count; |
| return 1; |
| } |
| |
| /* Helper for statistics_fini_pass, reset the counters. */ |
| |
| int |
| statistics_fini_pass_3 (statistics_counter **slot, |
| void *data ATTRIBUTE_UNUSED) |
| { |
| statistics_counter *counter = *slot; |
| counter->prev_dumped_count = counter->count; |
| return 1; |
| } |
| |
| /* Dump the current statistics incrementally. */ |
| |
| void |
| statistics_fini_pass (void) |
| { |
| if (current_pass->static_pass_number == -1) |
| return; |
| |
| if (dump_file |
| && dump_flags & TDF_STATS) |
| { |
| fprintf (dump_file, "\n"); |
| fprintf (dump_file, "Pass statistics of \"%s\": ", current_pass->name); |
| fprintf (dump_file, "----------------\n"); |
| curr_statistics_hash () |
| ->traverse_noresize <void *, statistics_fini_pass_1> (NULL); |
| fprintf (dump_file, "\n"); |
| } |
| if (statistics_dump_file |
| && !(statistics_dump_flags & TDF_STATS |
| || statistics_dump_flags & TDF_DETAILS)) |
| curr_statistics_hash () |
| ->traverse_noresize <void *, statistics_fini_pass_2> (NULL); |
| curr_statistics_hash () |
| ->traverse_noresize <void *, statistics_fini_pass_3> (NULL); |
| } |
| |
| /* Helper for printing summary information. */ |
| |
| int |
| statistics_fini_1 (statistics_counter **slot, opt_pass *pass) |
| { |
| statistics_counter *counter = *slot; |
| if (counter->count == 0) |
| return 1; |
| if (counter->histogram_p) |
| fprintf (statistics_dump_file, |
| "%d %s \"%s == %d\" " HOST_WIDE_INT_PRINT_DEC "\n", |
| pass->static_pass_number, |
| pass->name, |
| counter->id, counter->val, |
| counter->count); |
| else |
| fprintf (statistics_dump_file, |
| "%d %s \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", |
| pass->static_pass_number, |
| pass->name, |
| counter->id, |
| counter->count); |
| return 1; |
| } |
| |
| /* Finish the statistics and dump summary information. */ |
| |
| void |
| statistics_fini (void) |
| { |
| gcc::pass_manager *passes = g->get_passes (); |
| if (!statistics_dump_file) |
| return; |
| |
| if (statistics_dump_flags & TDF_STATS) |
| { |
| unsigned i; |
| for (i = 0; i < nr_statistics_hashes; ++i) |
| if (statistics_hashes[i] |
| && passes->get_pass_for_id (i) != NULL) |
| statistics_hashes[i] |
| ->traverse_noresize <opt_pass *, statistics_fini_1> |
| (passes->get_pass_for_id (i)); |
| } |
| |
| dump_end (statistics_dump_nr, statistics_dump_file); |
| } |
| |
| /* Register the statistics dump file. */ |
| |
| void |
| statistics_early_init (void) |
| { |
| gcc::dump_manager *dumps = g->get_dumps (); |
| statistics_dump_nr = dumps->dump_register (".statistics", "statistics", |
| "statistics", TDF_TREE, |
| OPTGROUP_NONE, |
| false); |
| } |
| |
| /* Init the statistics. */ |
| |
| void |
| statistics_init (void) |
| { |
| gcc::dump_manager *dumps = g->get_dumps (); |
| statistics_dump_file = dump_begin (statistics_dump_nr, NULL); |
| statistics_dump_flags = dumps->get_dump_file_info (statistics_dump_nr)->pflags; |
| } |
| |
| /* Lookup or add a statistics counter in the hashtable HASH with ID, VAL |
| and HISTOGRAM_P. */ |
| |
| static statistics_counter * |
| lookup_or_add_counter (stats_counter_table_type *hash, const char *id, int val, |
| bool histogram_p) |
| { |
| statistics_counter **counter; |
| statistics_counter c; |
| c.id = id; |
| c.val = val; |
| counter = hash->find_slot (&c, INSERT); |
| if (!*counter) |
| { |
| *counter = XNEW (statistics_counter); |
| (*counter)->id = xstrdup (id); |
| (*counter)->val = val; |
| (*counter)->histogram_p = histogram_p; |
| (*counter)->prev_dumped_count = 0; |
| (*counter)->count = 0; |
| } |
| return *counter; |
| } |
| |
| /* Add statistics information about event ID in function FN. |
| This will increment the counter associated with ID by INCR. |
| It will also dump the event to the global statistics file if requested. */ |
| |
| void |
| statistics_counter_event (struct function *fn, const char *id, int incr) |
| { |
| statistics_counter *counter; |
| |
| if ((!(dump_flags & TDF_STATS) |
| && !statistics_dump_file) |
| || incr == 0) |
| return; |
| |
| if (current_pass |
| && current_pass->static_pass_number != -1) |
| { |
| counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, false); |
| gcc_assert (!counter->histogram_p); |
| counter->count += incr; |
| } |
| |
| if (!statistics_dump_file |
| || !(statistics_dump_flags & TDF_DETAILS)) |
| return; |
| |
| fprintf (statistics_dump_file, |
| "%d %s \"%s\" \"%s\" %d\n", |
| current_pass ? current_pass->static_pass_number : -1, |
| current_pass ? current_pass->name : "none", |
| id, |
| function_name (fn), |
| incr); |
| } |
| |
| /* Add statistics information about event ID in function FN with the |
| histogram value VAL. |
| It will dump the event to the global statistics file if requested. */ |
| |
| void |
| statistics_histogram_event (struct function *fn, const char *id, int val) |
| { |
| statistics_counter *counter; |
| |
| if (!(dump_flags & TDF_STATS) |
| && !statistics_dump_file) |
| return; |
| |
| counter = lookup_or_add_counter (curr_statistics_hash (), id, val, true); |
| gcc_assert (counter->histogram_p); |
| counter->count += 1; |
| |
| if (!statistics_dump_file |
| || !(statistics_dump_flags & TDF_DETAILS)) |
| return; |
| |
| fprintf (statistics_dump_file, |
| "%d %s \"%s == %d\" \"%s\" 1\n", |
| current_pass->static_pass_number, |
| current_pass->name, |
| id, val, |
| function_name (fn)); |
| } |