Mercurial > hg > CbC > CbC_gcc
comparison gcc/statistics.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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1 /* Optimization statistics functions. | |
2 Copyright (C) 2008 | |
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 "tm.h" | |
30 #include "function.h" | |
31 | |
32 static int statistics_dump_nr; | |
33 static int statistics_dump_flags; | |
34 static FILE *statistics_dump_file; | |
35 | |
36 /* Statistics entry. A integer counter associated to a string ID | |
37 and value. */ | |
38 | |
39 typedef struct statistics_counter_s { | |
40 const char *id; | |
41 int val; | |
42 bool histogram_p; | |
43 unsigned HOST_WIDE_INT count; | |
44 unsigned HOST_WIDE_INT prev_dumped_count; | |
45 } statistics_counter_t; | |
46 | |
47 /* Array of statistic hashes, indexed by pass id. */ | |
48 static htab_t *statistics_hashes; | |
49 static unsigned nr_statistics_hashes; | |
50 | |
51 /* Hash a statistic counter by its string ID. */ | |
52 | |
53 static hashval_t | |
54 hash_statistics_hash (const void *p) | |
55 { | |
56 const statistics_counter_t *const c = (const statistics_counter_t *)p; | |
57 return htab_hash_string (c->id) + c->val; | |
58 } | |
59 | |
60 /* Compare two statistic counters by their string IDs. */ | |
61 | |
62 static int | |
63 hash_statistics_eq (const void *p, const void *q) | |
64 { | |
65 const statistics_counter_t *const c1 = (const statistics_counter_t *)p; | |
66 const statistics_counter_t *const c2 = (const statistics_counter_t *)q; | |
67 return c1->val == c2->val && strcmp (c1->id, c2->id) == 0; | |
68 } | |
69 | |
70 /* Free a statistics entry. */ | |
71 | |
72 static void | |
73 hash_statistics_free (void *p) | |
74 { | |
75 free (CONST_CAST(char *, ((statistics_counter_t *)p)->id)); | |
76 free (p); | |
77 } | |
78 | |
79 /* Return the current hashtable to be used for recording or printing | |
80 statistics. */ | |
81 | |
82 static htab_t | |
83 curr_statistics_hash (void) | |
84 { | |
85 unsigned idx = current_pass->static_pass_number; | |
86 | |
87 if (idx < nr_statistics_hashes | |
88 && statistics_hashes[idx] != NULL) | |
89 return statistics_hashes[idx]; | |
90 | |
91 if (idx >= nr_statistics_hashes) | |
92 { | |
93 statistics_hashes = XRESIZEVEC (struct htab *, statistics_hashes, idx+1); | |
94 memset (statistics_hashes + nr_statistics_hashes, 0, | |
95 (idx + 1 - nr_statistics_hashes) * sizeof (htab_t)); | |
96 nr_statistics_hashes = idx + 1; | |
97 } | |
98 | |
99 statistics_hashes[idx] = htab_create (15, hash_statistics_hash, | |
100 hash_statistics_eq, | |
101 hash_statistics_free); | |
102 | |
103 return statistics_hashes[idx]; | |
104 } | |
105 | |
106 /* Helper for statistics_fini_pass. Print the counter difference | |
107 since the last dump for the pass dump files. */ | |
108 | |
109 static int | |
110 statistics_fini_pass_1 (void **slot, void *data ATTRIBUTE_UNUSED) | |
111 { | |
112 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
113 unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; | |
114 if (count == 0) | |
115 return 1; | |
116 if (counter->histogram_p) | |
117 fprintf (dump_file, "%s == %d: " HOST_WIDE_INT_PRINT_DEC "\n", | |
118 counter->id, counter->val, count); | |
119 else | |
120 fprintf (dump_file, "%s: " HOST_WIDE_INT_PRINT_DEC "\n", | |
121 counter->id, count); | |
122 counter->prev_dumped_count = counter->count; | |
123 return 1; | |
124 } | |
125 | |
126 /* Helper for statistics_fini_pass. Print the counter difference | |
127 since the last dump for the statistics dump. */ | |
128 | |
129 static int | |
130 statistics_fini_pass_2 (void **slot, void *data ATTRIBUTE_UNUSED) | |
131 { | |
132 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
133 unsigned HOST_WIDE_INT count = counter->count - counter->prev_dumped_count; | |
134 if (count == 0) | |
135 return 1; | |
136 counter->prev_dumped_count = counter->count; | |
137 if (counter->histogram_p) | |
138 fprintf (statistics_dump_file, | |
139 "%d %s \"%s == %d\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
140 current_pass->static_pass_number, | |
141 current_pass->name, | |
142 counter->id, counter->val, | |
143 cfun ? IDENTIFIER_POINTER (DECL_NAME (cfun->decl)) : "(nofn)", | |
144 count); | |
145 else | |
146 fprintf (statistics_dump_file, | |
147 "%d %s \"%s\" \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
148 current_pass->static_pass_number, | |
149 current_pass->name, | |
150 counter->id, | |
151 cfun ? IDENTIFIER_POINTER (DECL_NAME (cfun->decl)) : "(nofn)", | |
152 count); | |
153 counter->prev_dumped_count = counter->count; | |
154 return 1; | |
155 } | |
156 | |
157 /* Helper for statistics_fini_pass, reset the counters. */ | |
158 | |
159 static int | |
160 statistics_fini_pass_3 (void **slot, void *data ATTRIBUTE_UNUSED) | |
161 { | |
162 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
163 counter->prev_dumped_count = counter->count; | |
164 return 1; | |
165 } | |
166 | |
167 /* Dump the current statistics incrementally. */ | |
168 | |
169 void | |
170 statistics_fini_pass (void) | |
171 { | |
172 if (current_pass->static_pass_number == -1) | |
173 return; | |
174 | |
175 if (dump_file | |
176 && dump_flags & TDF_STATS) | |
177 { | |
178 fprintf (dump_file, "\n"); | |
179 fprintf (dump_file, "Pass statistics:\n"); | |
180 fprintf (dump_file, "----------------\n"); | |
181 htab_traverse_noresize (curr_statistics_hash (), | |
182 statistics_fini_pass_1, NULL); | |
183 fprintf (dump_file, "\n"); | |
184 } | |
185 if (statistics_dump_file | |
186 && !(statistics_dump_flags & TDF_STATS | |
187 || statistics_dump_flags & TDF_DETAILS)) | |
188 htab_traverse_noresize (curr_statistics_hash (), | |
189 statistics_fini_pass_2, NULL); | |
190 htab_traverse_noresize (curr_statistics_hash (), | |
191 statistics_fini_pass_3, NULL); | |
192 } | |
193 | |
194 /* Helper for printing summary information. */ | |
195 | |
196 static int | |
197 statistics_fini_1 (void **slot, void *data) | |
198 { | |
199 struct opt_pass *pass = (struct opt_pass *)data; | |
200 statistics_counter_t *counter = (statistics_counter_t *)*slot; | |
201 if (counter->count == 0) | |
202 return 1; | |
203 if (counter->histogram_p) | |
204 fprintf (statistics_dump_file, | |
205 "%d %s \"%s == %d\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
206 pass->static_pass_number, | |
207 pass->name, | |
208 counter->id, counter->val, | |
209 counter->count); | |
210 else | |
211 fprintf (statistics_dump_file, | |
212 "%d %s \"%s\" " HOST_WIDE_INT_PRINT_DEC "\n", | |
213 pass->static_pass_number, | |
214 pass->name, | |
215 counter->id, | |
216 counter->count); | |
217 return 1; | |
218 } | |
219 | |
220 /* Finish the statistics and dump summary information. */ | |
221 | |
222 void | |
223 statistics_fini (void) | |
224 { | |
225 if (!statistics_dump_file) | |
226 return; | |
227 | |
228 if (statistics_dump_flags & TDF_STATS) | |
229 { | |
230 unsigned i; | |
231 for (i = 0; i < nr_statistics_hashes; ++i) | |
232 if (statistics_hashes[i] != NULL | |
233 && get_pass_for_id (i) != NULL) | |
234 htab_traverse_noresize (statistics_hashes[i], | |
235 statistics_fini_1, get_pass_for_id (i)); | |
236 } | |
237 | |
238 dump_end (statistics_dump_nr, statistics_dump_file); | |
239 } | |
240 | |
241 /* Register the statistics dump file. */ | |
242 | |
243 void | |
244 statistics_early_init (void) | |
245 { | |
246 statistics_dump_nr = dump_register (".statistics", "statistics", | |
247 "statistics", TDF_TREE); | |
248 } | |
249 | |
250 /* Init the statistics. */ | |
251 | |
252 void | |
253 statistics_init (void) | |
254 { | |
255 statistics_dump_file = dump_begin (statistics_dump_nr, NULL); | |
256 statistics_dump_flags = get_dump_file_info (statistics_dump_nr)->flags; | |
257 } | |
258 | |
259 /* Lookup or add a statistics counter in the hashtable HASH with ID, VAL | |
260 and HISTOGRAM_P. */ | |
261 | |
262 static statistics_counter_t * | |
263 lookup_or_add_counter (htab_t hash, const char *id, int val, | |
264 bool histogram_p) | |
265 { | |
266 statistics_counter_t **counter; | |
267 statistics_counter_t c; | |
268 c.id = id; | |
269 c.val = val; | |
270 counter = (statistics_counter_t **) htab_find_slot (hash, &c, INSERT); | |
271 if (!*counter) | |
272 { | |
273 *counter = XNEW (struct statistics_counter_s); | |
274 (*counter)->id = xstrdup (id); | |
275 (*counter)->val = val; | |
276 (*counter)->histogram_p = histogram_p; | |
277 (*counter)->prev_dumped_count = 0; | |
278 (*counter)->count = 0; | |
279 } | |
280 return *counter; | |
281 } | |
282 | |
283 /* Add statistics information about event ID in function FN. | |
284 This will increment the counter associated with ID by INCR. | |
285 It will also dump the event to the global statistics file if requested. */ | |
286 | |
287 void | |
288 statistics_counter_event (struct function *fn, const char *id, int incr) | |
289 { | |
290 statistics_counter_t *counter; | |
291 | |
292 if ((!(dump_flags & TDF_STATS) | |
293 && !statistics_dump_file) | |
294 || incr == 0) | |
295 return; | |
296 | |
297 counter = lookup_or_add_counter (curr_statistics_hash (), id, 0, false); | |
298 gcc_assert (!counter->histogram_p); | |
299 counter->count += incr; | |
300 | |
301 if (!statistics_dump_file | |
302 || !(statistics_dump_flags & TDF_DETAILS)) | |
303 return; | |
304 | |
305 fprintf (statistics_dump_file, | |
306 "%d %s \"%s\" \"%s\" %d\n", | |
307 current_pass->static_pass_number, | |
308 current_pass->name, | |
309 id, | |
310 fn ? IDENTIFIER_POINTER (DECL_NAME (fn->decl)) : "(nofn)", | |
311 incr); | |
312 } | |
313 | |
314 /* Add statistics information about event ID in function FN with the | |
315 histogram value VAL. | |
316 It will dump the event to the global statistics file if requested. */ | |
317 | |
318 void | |
319 statistics_histogram_event (struct function *fn, const char *id, int val) | |
320 { | |
321 statistics_counter_t *counter; | |
322 | |
323 if (!(dump_flags & TDF_STATS) | |
324 && !statistics_dump_file) | |
325 return; | |
326 | |
327 counter = lookup_or_add_counter (curr_statistics_hash (), id, val, true); | |
328 gcc_assert (counter->histogram_p); | |
329 counter->count += 1; | |
330 | |
331 if (!statistics_dump_file | |
332 || !(statistics_dump_flags & TDF_DETAILS)) | |
333 return; | |
334 | |
335 fprintf (statistics_dump_file, | |
336 "%d %s \"%s == %d\" \"%s\" 1\n", | |
337 current_pass->static_pass_number, | |
338 current_pass->name, | |
339 id, val, | |
340 fn ? IDENTIFIER_POINTER (DECL_NAME (fn->decl)) : "(nofn)"); | |
341 } |