]>
Commit | Line | Data |
---|---|---|
50924be0 | 1 | /* Optimization statistics functions. |
fbd26352 | 2 | Copyright (C) 2008-2019 Free Software Foundation, Inc. |
50924be0 | 3 | Contributed by Richard Guenther <rguenther@suse.de> |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
50924be0 | 24 | #include "function.h" |
7c29e30e | 25 | #include "tree-pass.h" |
3ea50c01 | 26 | #include "context.h" |
27 | #include "pass_manager.h" | |
50924be0 | 28 | |
29 | static int statistics_dump_nr; | |
3f6e5ced | 30 | static dump_flags_t statistics_dump_flags; |
50924be0 | 31 | static FILE *statistics_dump_file; |
32 | ||
33 | /* Statistics entry. A integer counter associated to a string ID | |
34 | and value. */ | |
35 | ||
04009ada | 36 | struct statistics_counter { |
50924be0 | 37 | const char *id; |
38 | int val; | |
39 | bool histogram_p; | |
40 | unsigned HOST_WIDE_INT count; | |
41 | unsigned HOST_WIDE_INT prev_dumped_count; | |
04009ada | 42 | }; |
50924be0 | 43 | |
3e871d4d | 44 | /* Hashtable helpers. */ |
45 | ||
04009ada | 46 | struct stats_counter_hasher : pointer_hash <statistics_counter> |
3e871d4d | 47 | { |
04009ada | 48 | static inline hashval_t hash (const statistics_counter *); |
49 | static inline bool equal (const statistics_counter *, | |
50 | const statistics_counter *); | |
51 | static inline void remove (statistics_counter *); | |
3e871d4d | 52 | }; |
50924be0 | 53 | |
54 | /* Hash a statistic counter by its string ID. */ | |
55 | ||
3e871d4d | 56 | inline hashval_t |
04009ada | 57 | stats_counter_hasher::hash (const statistics_counter *c) |
50924be0 | 58 | { |
50924be0 | 59 | return htab_hash_string (c->id) + c->val; |
60 | } | |
61 | ||
62 | /* Compare two statistic counters by their string IDs. */ | |
63 | ||
3e871d4d | 64 | inline bool |
04009ada | 65 | stats_counter_hasher::equal (const statistics_counter *c1, |
66 | const statistics_counter *c2) | |
50924be0 | 67 | { |
50924be0 | 68 | return c1->val == c2->val && strcmp (c1->id, c2->id) == 0; |
69 | } | |
70 | ||
71 | /* Free a statistics entry. */ | |
72 | ||
3e871d4d | 73 | inline void |
04009ada | 74 | stats_counter_hasher::remove (statistics_counter *v) |
50924be0 | 75 | { |
9af5ce0c | 76 | free (CONST_CAST (char *, v->id)); |
3e871d4d | 77 | free (v); |
50924be0 | 78 | } |
79 | ||
c1f445d2 | 80 | typedef hash_table<stats_counter_hasher> stats_counter_table_type; |
3e871d4d | 81 | |
82 | /* Array of statistic hashes, indexed by pass id. */ | |
c1f445d2 | 83 | static stats_counter_table_type **statistics_hashes; |
3e871d4d | 84 | static unsigned nr_statistics_hashes; |
85 | ||
50924be0 | 86 | /* Return the current hashtable to be used for recording or printing |
87 | statistics. */ | |
88 | ||
c1f445d2 | 89 | static stats_counter_table_type * |
50924be0 | 90 | curr_statistics_hash (void) |
91 | { | |
2dfe9981 | 92 | unsigned idx; |
93 | ||
94 | gcc_assert (current_pass->static_pass_number >= 0); | |
95 | idx = current_pass->static_pass_number; | |
50924be0 | 96 | |
97 | if (idx < nr_statistics_hashes | |
c1f445d2 | 98 | && statistics_hashes[idx]) |
50924be0 | 99 | return statistics_hashes[idx]; |
100 | ||
101 | if (idx >= nr_statistics_hashes) | |
102 | { | |
c1f445d2 | 103 | statistics_hashes = XRESIZEVEC (stats_counter_table_type *, |
3e871d4d | 104 | statistics_hashes, idx+1); |
50924be0 | 105 | memset (statistics_hashes + nr_statistics_hashes, 0, |
3e871d4d | 106 | (idx + 1 - nr_statistics_hashes) |
c1f445d2 | 107 | * sizeof (stats_counter_table_type *)); |
50924be0 | 108 | nr_statistics_hashes = idx + 1; |
109 | } | |
110 | ||
c1f445d2 | 111 | statistics_hashes[idx] = new stats_counter_table_type (15); |
50924be0 | 112 | |
113 | return statistics_hashes[idx]; | |
114 | } | |
115 | ||
116 | /* Helper for statistics_fini_pass. Print the counter difference | |
117 | since the last dump for the pass dump files. */ | |
118 | ||
3e871d4d | 119 | int |
04009ada | 120 | statistics_fini_pass_1 (statistics_counter **slot, |
3e871d4d | 121 | void *data ATTRIBUTE_UNUSED) |
50924be0 | 122 | { |
04009ada | 123 | statistics_counter *counter = *slot; |
50924be0 | 124 | unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; |
125 | if (count == 0) | |
126 | return 1; | |
127 | if (counter->histogram_p) | |
128 | fprintf (dump_file, "%s == %d: " HOST_WIDE_INT_PRINT_DEC "\n", | |
129 | counter->id, counter->val, count); | |
130 | else | |
131 | fprintf (dump_file, "%s: " HOST_WIDE_INT_PRINT_DEC "\n", | |
132 | counter->id, count); | |
133 | counter->prev_dumped_count = counter->count; | |
134 | return 1; | |
135 | } | |
136 | ||
137 | /* Helper for statistics_fini_pass. Print the counter difference | |
138 | since the last dump for the statistics dump. */ | |
139 | ||
3e871d4d | 140 | int |
04009ada | 141 | statistics_fini_pass_2 (statistics_counter **slot, |
3e871d4d | 142 | void *data ATTRIBUTE_UNUSED) |
50924be0 | 143 | { |
04009ada | 144 | statistics_counter *counter = *slot; |
50924be0 | 145 | unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; |
146 | if (count == 0) | |
147 | return 1; | |
148 | counter->prev_dumped_count = counter->count; | |
149 | if (counter->histogram_p) | |
150 | fprintf (statistics_dump_file, | |
151 | "%d %s \"%s == %d\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
152 | current_pass->static_pass_number, | |
153 | current_pass->name, | |
154 | counter->id, counter->val, | |
4a020a8c | 155 | current_function_name (), |
50924be0 | 156 | count); |
157 | else | |
158 | fprintf (statistics_dump_file, | |
159 | "%d %s \"%s\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
160 | current_pass->static_pass_number, | |
161 | current_pass->name, | |
162 | counter->id, | |
4a020a8c | 163 | current_function_name (), |
50924be0 | 164 | count); |
165 | counter->prev_dumped_count = counter->count; | |
166 | return 1; | |
167 | } | |
168 | ||
169 | /* Helper for statistics_fini_pass, reset the counters. */ | |
170 | ||
3e871d4d | 171 | int |
04009ada | 172 | statistics_fini_pass_3 (statistics_counter **slot, |
3e871d4d | 173 | void *data ATTRIBUTE_UNUSED) |
50924be0 | 174 | { |
04009ada | 175 | statistics_counter *counter = *slot; |
50924be0 | 176 | counter->prev_dumped_count = counter->count; |
177 | return 1; | |
178 | } | |
179 | ||
180 | /* Dump the current statistics incrementally. */ | |
181 | ||
182 | void | |
183 | statistics_fini_pass (void) | |
184 | { | |
185 | if (current_pass->static_pass_number == -1) | |
186 | return; | |
187 | ||
188 | if (dump_file | |
189 | && dump_flags & TDF_STATS) | |
190 | { | |
191 | fprintf (dump_file, "\n"); | |
53d04190 | 192 | fprintf (dump_file, "Pass statistics of \"%s\": ", current_pass->name); |
50924be0 | 193 | fprintf (dump_file, "----------------\n"); |
3e871d4d | 194 | curr_statistics_hash () |
c1f445d2 | 195 | ->traverse_noresize <void *, statistics_fini_pass_1> (NULL); |
50924be0 | 196 | fprintf (dump_file, "\n"); |
197 | } | |
198 | if (statistics_dump_file | |
199 | && !(statistics_dump_flags & TDF_STATS | |
200 | || statistics_dump_flags & TDF_DETAILS)) | |
3e871d4d | 201 | curr_statistics_hash () |
c1f445d2 | 202 | ->traverse_noresize <void *, statistics_fini_pass_2> (NULL); |
3e871d4d | 203 | curr_statistics_hash () |
c1f445d2 | 204 | ->traverse_noresize <void *, statistics_fini_pass_3> (NULL); |
50924be0 | 205 | } |
206 | ||
207 | /* Helper for printing summary information. */ | |
208 | ||
3e871d4d | 209 | int |
04009ada | 210 | statistics_fini_1 (statistics_counter **slot, opt_pass *pass) |
50924be0 | 211 | { |
04009ada | 212 | statistics_counter *counter = *slot; |
50924be0 | 213 | if (counter->count == 0) |
214 | return 1; | |
215 | if (counter->histogram_p) | |
216 | fprintf (statistics_dump_file, | |
217 | "%d %s \"%s == %d\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
218 | pass->static_pass_number, | |
219 | pass->name, | |
220 | counter->id, counter->val, | |
221 | counter->count); | |
222 | else | |
223 | fprintf (statistics_dump_file, | |
224 | "%d %s \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
225 | pass->static_pass_number, | |
226 | pass->name, | |
227 | counter->id, | |
228 | counter->count); | |
229 | return 1; | |
230 | } | |
231 | ||
232 | /* Finish the statistics and dump summary information. */ | |
233 | ||
234 | void | |
235 | statistics_fini (void) | |
236 | { | |
3ea50c01 | 237 | gcc::pass_manager *passes = g->get_passes (); |
50924be0 | 238 | if (!statistics_dump_file) |
239 | return; | |
240 | ||
241 | if (statistics_dump_flags & TDF_STATS) | |
242 | { | |
243 | unsigned i; | |
244 | for (i = 0; i < nr_statistics_hashes; ++i) | |
c1f445d2 | 245 | if (statistics_hashes[i] |
3ea50c01 | 246 | && passes->get_pass_for_id (i) != NULL) |
3e871d4d | 247 | statistics_hashes[i] |
c1f445d2 | 248 | ->traverse_noresize <opt_pass *, statistics_fini_1> |
3ea50c01 | 249 | (passes->get_pass_for_id (i)); |
50924be0 | 250 | } |
251 | ||
252 | dump_end (statistics_dump_nr, statistics_dump_file); | |
253 | } | |
254 | ||
255 | /* Register the statistics dump file. */ | |
256 | ||
257 | void | |
258 | statistics_early_init (void) | |
259 | { | |
41142c53 | 260 | gcc::dump_manager *dumps = g->get_dumps (); |
261 | statistics_dump_nr = dumps->dump_register (".statistics", "statistics", | |
ffdaf8f1 | 262 | "statistics", DK_tree, |
33c6d8ad | 263 | OPTGROUP_NONE, |
264 | false); | |
50924be0 | 265 | } |
266 | ||
267 | /* Init the statistics. */ | |
268 | ||
269 | void | |
270 | statistics_init (void) | |
271 | { | |
41142c53 | 272 | gcc::dump_manager *dumps = g->get_dumps (); |
50924be0 | 273 | statistics_dump_file = dump_begin (statistics_dump_nr, NULL); |
41142c53 | 274 | statistics_dump_flags = dumps->get_dump_file_info (statistics_dump_nr)->pflags; |
50924be0 | 275 | } |
276 | ||
277 | /* Lookup or add a statistics counter in the hashtable HASH with ID, VAL | |
278 | and HISTOGRAM_P. */ | |
279 | ||
04009ada | 280 | static statistics_counter * |
c1f445d2 | 281 | lookup_or_add_counter (stats_counter_table_type *hash, const char *id, int val, |
50924be0 | 282 | bool histogram_p) |
283 | { | |
04009ada | 284 | statistics_counter **counter; |
285 | statistics_counter c; | |
50924be0 | 286 | c.id = id; |
287 | c.val = val; | |
c1f445d2 | 288 | counter = hash->find_slot (&c, INSERT); |
50924be0 | 289 | if (!*counter) |
290 | { | |
04009ada | 291 | *counter = XNEW (statistics_counter); |
50924be0 | 292 | (*counter)->id = xstrdup (id); |
293 | (*counter)->val = val; | |
294 | (*counter)->histogram_p = histogram_p; | |
295 | (*counter)->prev_dumped_count = 0; | |
296 | (*counter)->count = 0; | |
297 | } | |
298 | return *counter; | |
299 | } | |
300 | ||
301 | /* Add statistics information about event ID in function FN. | |
302 | This will increment the counter associated with ID by INCR. | |
303 | It will also dump the event to the global statistics file if requested. */ | |
304 | ||
305 | void | |
306 | statistics_counter_event (struct function *fn, const char *id, int incr) | |
307 | { | |
04009ada | 308 | statistics_counter *counter; |
50924be0 | 309 | |
310 | if ((!(dump_flags & TDF_STATS) | |
311 | && !statistics_dump_file) | |
312 | || incr == 0) | |
313 | return; | |
314 | ||
8a54720a | 315 | if (current_pass |
316 | && current_pass->static_pass_number != -1) | |
2dfe9981 | 317 | { |
318 | counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, false); | |
319 | gcc_assert (!counter->histogram_p); | |
320 | counter->count += incr; | |
321 | } | |
50924be0 | 322 | |
323 | if (!statistics_dump_file | |
324 | || !(statistics_dump_flags & TDF_DETAILS)) | |
325 | return; | |
326 | ||
327 | fprintf (statistics_dump_file, | |
328 | "%d %s \"%s\" \"%s\" %d\n", | |
8a54720a | 329 | current_pass ? current_pass->static_pass_number : -1, |
330 | current_pass ? current_pass->name : "none", | |
50924be0 | 331 | id, |
4a020a8c | 332 | function_name (fn), |
50924be0 | 333 | incr); |
334 | } | |
335 | ||
336 | /* Add statistics information about event ID in function FN with the | |
337 | histogram value VAL. | |
338 | It will dump the event to the global statistics file if requested. */ | |
339 | ||
340 | void | |
341 | statistics_histogram_event (struct function *fn, const char *id, int val) | |
342 | { | |
04009ada | 343 | statistics_counter *counter; |
50924be0 | 344 | |
345 | if (!(dump_flags & TDF_STATS) | |
346 | && !statistics_dump_file) | |
347 | return; | |
348 | ||
349 | counter = lookup_or_add_counter (curr_statistics_hash (), id, val, true); | |
350 | gcc_assert (counter->histogram_p); | |
351 | counter->count += 1; | |
352 | ||
353 | if (!statistics_dump_file | |
354 | || !(statistics_dump_flags & TDF_DETAILS)) | |
355 | return; | |
356 | ||
357 | fprintf (statistics_dump_file, | |
358 | "%d %s \"%s == %d\" \"%s\" 1\n", | |
359 | current_pass->static_pass_number, | |
360 | current_pass->name, | |
361 | id, val, | |
4a020a8c | 362 | function_name (fn)); |
50924be0 | 363 | } |