Mercurial > hg > CbC > CbC_gcc
annotate gcc/statistics.c @ 93:0b0b0782e795
modify c-parser.c:cbc_finish_nested_function
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 17 Jan 2012 02:50:46 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Optimization statistics functions. |
|
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2 Copyright (C) 2008, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 Contributed by Richard Guenther <rguenther@suse.de> | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "tree-pass.h" | |
| 26 #include "tree-dump.h" | |
| 27 #include "statistics.h" | |
| 28 #include "hashtab.h" | |
| 29 #include "function.h" | |
| 30 | |
| 31 static int statistics_dump_nr; | |
| 32 static int statistics_dump_flags; | |
| 33 static FILE *statistics_dump_file; | |
| 34 | |
| 35 /* Statistics entry. A integer counter associated to a string ID | |
| 36 and value. */ | |
| 37 | |
| 38 typedef struct statistics_counter_s { | |
| 39 const char *id; | |
| 40 int val; | |
| 41 bool histogram_p; | |
| 42 unsigned HOST_WIDE_INT count; | |
| 43 unsigned HOST_WIDE_INT prev_dumped_count; | |
| 44 } statistics_counter_t; | |
| 45 | |
| 46 /* Array of statistic hashes, indexed by pass id. */ | |
| 47 static htab_t *statistics_hashes; | |
| 48 static unsigned nr_statistics_hashes; | |
| 49 | |
| 50 /* Hash a statistic counter by its string ID. */ | |
| 51 | |
| 52 static hashval_t | |
| 53 hash_statistics_hash (const void *p) | |
| 54 { | |
| 55 const statistics_counter_t *const c = (const statistics_counter_t *)p; | |
| 56 return htab_hash_string (c->id) + c->val; | |
| 57 } | |
| 58 | |
| 59 /* Compare two statistic counters by their string IDs. */ | |
| 60 | |
| 61 static int | |
| 62 hash_statistics_eq (const void *p, const void *q) | |
| 63 { | |
| 64 const statistics_counter_t *const c1 = (const statistics_counter_t *)p; | |
| 65 const statistics_counter_t *const c2 = (const statistics_counter_t *)q; | |
| 66 return c1->val == c2->val && strcmp (c1->id, c2->id) == 0; | |
| 67 } | |
| 68 | |
| 69 /* Free a statistics entry. */ | |
| 70 | |
| 71 static void | |
| 72 hash_statistics_free (void *p) | |
| 73 { | |
| 74 free (CONST_CAST(char *, ((statistics_counter_t *)p)->id)); | |
| 75 free (p); | |
| 76 } | |
| 77 | |
| 78 /* Return the current hashtable to be used for recording or printing | |
| 79 statistics. */ | |
| 80 | |
| 81 static htab_t | |
| 82 curr_statistics_hash (void) | |
| 83 { | |
|
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84 unsigned idx; |
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85 |
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86 gcc_assert (current_pass->static_pass_number >= 0); |
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87 idx = current_pass->static_pass_number; |
| 0 | 88 |
| 89 if (idx < nr_statistics_hashes | |
| 90 && statistics_hashes[idx] != NULL) | |
| 91 return statistics_hashes[idx]; | |
| 92 | |
| 93 if (idx >= nr_statistics_hashes) | |
| 94 { | |
| 95 statistics_hashes = XRESIZEVEC (struct htab *, statistics_hashes, idx+1); | |
| 96 memset (statistics_hashes + nr_statistics_hashes, 0, | |
| 97 (idx + 1 - nr_statistics_hashes) * sizeof (htab_t)); | |
| 98 nr_statistics_hashes = idx + 1; | |
| 99 } | |
| 100 | |
| 101 statistics_hashes[idx] = htab_create (15, hash_statistics_hash, | |
| 102 hash_statistics_eq, | |
| 103 hash_statistics_free); | |
| 104 | |
| 105 return statistics_hashes[idx]; | |
| 106 } | |
| 107 | |
| 108 /* Helper for statistics_fini_pass. Print the counter difference | |
| 109 since the last dump for the pass dump files. */ | |
| 110 | |
| 111 static int | |
| 112 statistics_fini_pass_1 (void **slot, void *data ATTRIBUTE_UNUSED) | |
| 113 { | |
| 114 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
| 115 unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; | |
| 116 if (count == 0) | |
| 117 return 1; | |
| 118 if (counter->histogram_p) | |
| 119 fprintf (dump_file, "%s == %d: " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 120 counter->id, counter->val, count); | |
| 121 else | |
| 122 fprintf (dump_file, "%s: " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 123 counter->id, count); | |
| 124 counter->prev_dumped_count = counter->count; | |
| 125 return 1; | |
| 126 } | |
| 127 | |
| 128 /* Helper for statistics_fini_pass. Print the counter difference | |
| 129 since the last dump for the statistics dump. */ | |
| 130 | |
| 131 static int | |
| 132 statistics_fini_pass_2 (void **slot, void *data ATTRIBUTE_UNUSED) | |
| 133 { | |
| 134 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
| 135 unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; | |
| 136 if (count == 0) | |
| 137 return 1; | |
| 138 counter->prev_dumped_count = counter->count; | |
| 139 if (counter->histogram_p) | |
| 140 fprintf (statistics_dump_file, | |
| 141 "%d %s \"%s == %d\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 142 current_pass->static_pass_number, | |
| 143 current_pass->name, | |
| 144 counter->id, counter->val, | |
| 145 cfun ? IDENTIFIER_POINTER (DECL_NAME (cfun->decl)) : "(nofn)", | |
| 146 count); | |
| 147 else | |
| 148 fprintf (statistics_dump_file, | |
| 149 "%d %s \"%s\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 150 current_pass->static_pass_number, | |
| 151 current_pass->name, | |
| 152 counter->id, | |
| 153 cfun ? IDENTIFIER_POINTER (DECL_NAME (cfun->decl)) : "(nofn)", | |
| 154 count); | |
| 155 counter->prev_dumped_count = counter->count; | |
| 156 return 1; | |
| 157 } | |
| 158 | |
| 159 /* Helper for statistics_fini_pass, reset the counters. */ | |
| 160 | |
| 161 static int | |
| 162 statistics_fini_pass_3 (void **slot, void *data ATTRIBUTE_UNUSED) | |
| 163 { | |
| 164 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
| 165 counter->prev_dumped_count = counter->count; | |
| 166 return 1; | |
| 167 } | |
| 168 | |
| 169 /* Dump the current statistics incrementally. */ | |
| 170 | |
| 171 void | |
| 172 statistics_fini_pass (void) | |
| 173 { | |
| 174 if (current_pass->static_pass_number == -1) | |
| 175 return; | |
| 176 | |
| 177 if (dump_file | |
| 178 && dump_flags & TDF_STATS) | |
| 179 { | |
| 180 fprintf (dump_file, "\n"); | |
| 181 fprintf (dump_file, "Pass statistics:\n"); | |
| 182 fprintf (dump_file, "----------------\n"); | |
| 183 htab_traverse_noresize (curr_statistics_hash (), | |
| 184 statistics_fini_pass_1, NULL); | |
| 185 fprintf (dump_file, "\n"); | |
| 186 } | |
| 187 if (statistics_dump_file | |
| 188 && !(statistics_dump_flags & TDF_STATS | |
| 189 || statistics_dump_flags & TDF_DETAILS)) | |
| 190 htab_traverse_noresize (curr_statistics_hash (), | |
| 191 statistics_fini_pass_2, NULL); | |
| 192 htab_traverse_noresize (curr_statistics_hash (), | |
| 193 statistics_fini_pass_3, NULL); | |
| 194 } | |
| 195 | |
| 196 /* Helper for printing summary information. */ | |
| 197 | |
| 198 static int | |
| 199 statistics_fini_1 (void **slot, void *data) | |
| 200 { | |
| 201 struct opt_pass *pass = (struct opt_pass *)data; | |
| 202 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
| 203 if (counter->count == 0) | |
| 204 return 1; | |
| 205 if (counter->histogram_p) | |
| 206 fprintf (statistics_dump_file, | |
| 207 "%d %s \"%s == %d\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 208 pass->static_pass_number, | |
| 209 pass->name, | |
| 210 counter->id, counter->val, | |
| 211 counter->count); | |
| 212 else | |
| 213 fprintf (statistics_dump_file, | |
| 214 "%d %s \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
| 215 pass->static_pass_number, | |
| 216 pass->name, | |
| 217 counter->id, | |
| 218 counter->count); | |
| 219 return 1; | |
| 220 } | |
| 221 | |
| 222 /* Finish the statistics and dump summary information. */ | |
| 223 | |
| 224 void | |
| 225 statistics_fini (void) | |
| 226 { | |
| 227 if (!statistics_dump_file) | |
| 228 return; | |
| 229 | |
| 230 if (statistics_dump_flags & TDF_STATS) | |
| 231 { | |
| 232 unsigned i; | |
| 233 for (i = 0; i < nr_statistics_hashes; ++i) | |
| 234 if (statistics_hashes[i] != NULL | |
| 235 && get_pass_for_id (i) != NULL) | |
| 236 htab_traverse_noresize (statistics_hashes[i], | |
| 237 statistics_fini_1, get_pass_for_id (i)); | |
| 238 } | |
| 239 | |
| 240 dump_end (statistics_dump_nr, statistics_dump_file); | |
| 241 } | |
| 242 | |
| 243 /* Register the statistics dump file. */ | |
| 244 | |
| 245 void | |
| 246 statistics_early_init (void) | |
| 247 { | |
| 248 statistics_dump_nr = dump_register (".statistics", "statistics", | |
| 249 "statistics", TDF_TREE); | |
| 250 } | |
| 251 | |
| 252 /* Init the statistics. */ | |
| 253 | |
| 254 void | |
| 255 statistics_init (void) | |
| 256 { | |
| 257 statistics_dump_file = dump_begin (statistics_dump_nr, NULL); | |
| 258 statistics_dump_flags = get_dump_file_info (statistics_dump_nr)->flags; | |
| 259 } | |
| 260 | |
| 261 /* Lookup or add a statistics counter in the hashtable HASH with ID, VAL | |
| 262 and HISTOGRAM_P. */ | |
| 263 | |
| 264 static statistics_counter_t * | |
| 265 lookup_or_add_counter (htab_t hash, const char *id, int val, | |
| 266 bool histogram_p) | |
| 267 { | |
| 268 statistics_counter_t **counter; | |
| 269 statistics_counter_t c; | |
| 270 c.id = id; | |
| 271 c.val = val; | |
| 272 counter = (statistics_counter_t **) htab_find_slot (hash, &c, INSERT); | |
| 273 if (!*counter) | |
| 274 { | |
| 275 *counter = XNEW (struct statistics_counter_s); | |
| 276 (*counter)->id = xstrdup (id); | |
| 277 (*counter)->val = val; | |
| 278 (*counter)->histogram_p = histogram_p; | |
| 279 (*counter)->prev_dumped_count = 0; | |
| 280 (*counter)->count = 0; | |
| 281 } | |
| 282 return *counter; | |
| 283 } | |
| 284 | |
| 285 /* Add statistics information about event ID in function FN. | |
| 286 This will increment the counter associated with ID by INCR. | |
| 287 It will also dump the event to the global statistics file if requested. */ | |
| 288 | |
| 289 void | |
| 290 statistics_counter_event (struct function *fn, const char *id, int incr) | |
| 291 { | |
| 292 statistics_counter_t *counter; | |
| 293 | |
| 294 if ((!(dump_flags & TDF_STATS) | |
| 295 && !statistics_dump_file) | |
| 296 || incr == 0) | |
| 297 return; | |
| 298 | |
|
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299 if (current_pass->static_pass_number != -1) |
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300 { |
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301 counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, false); |
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302 gcc_assert (!counter->histogram_p); |
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303 counter->count += incr; |
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304 } |
| 0 | 305 |
| 306 if (!statistics_dump_file | |
| 307 || !(statistics_dump_flags & TDF_DETAILS)) | |
| 308 return; | |
| 309 | |
| 310 fprintf (statistics_dump_file, | |
| 311 "%d %s \"%s\" \"%s\" %d\n", | |
| 312 current_pass->static_pass_number, | |
| 313 current_pass->name, | |
| 314 id, | |
| 315 fn ? IDENTIFIER_POINTER (DECL_NAME (fn->decl)) : "(nofn)", | |
| 316 incr); | |
| 317 } | |
| 318 | |
| 319 /* Add statistics information about event ID in function FN with the | |
| 320 histogram value VAL. | |
| 321 It will dump the event to the global statistics file if requested. */ | |
| 322 | |
| 323 void | |
| 324 statistics_histogram_event (struct function *fn, const char *id, int val) | |
| 325 { | |
| 326 statistics_counter_t *counter; | |
| 327 | |
| 328 if (!(dump_flags & TDF_STATS) | |
| 329 && !statistics_dump_file) | |
| 330 return; | |
| 331 | |
| 332 counter = lookup_or_add_counter (curr_statistics_hash (), id, val, true); | |
| 333 gcc_assert (counter->histogram_p); | |
| 334 counter->count += 1; | |
| 335 | |
| 336 if (!statistics_dump_file | |
| 337 || !(statistics_dump_flags & TDF_DETAILS)) | |
| 338 return; | |
| 339 | |
| 340 fprintf (statistics_dump_file, | |
| 341 "%d %s \"%s == %d\" \"%s\" 1\n", | |
| 342 current_pass->static_pass_number, | |
| 343 current_pass->name, | |
| 344 id, val, | |
| 345 fn ? IDENTIFIER_POINTER (DECL_NAME (fn->decl)) : "(nofn)"); | |
| 346 } |