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c77556a5 RX |
1 | /* Utility functions for reading gcda files into in-memory |
2 | gcov_info structures and offline profile processing. */ | |
8d9254fc | 3 | /* Copyright (C) 2014-2020 Free Software Foundation, Inc. |
c77556a5 RX |
4 | Contributed by Rong Xu <xur@google.com>. |
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 | Under Section 7 of GPL version 3, you are granted additional | |
19 | permissions described in the GCC Runtime Library Exception, version | |
20 | 3.1, as published by the Free Software Foundation. | |
21 | ||
22 | You should have received a copy of the GNU General Public License and | |
23 | a copy of the GCC Runtime Library Exception along with this program; | |
24 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 | <http://www.gnu.org/licenses/>. */ | |
26 | ||
27 | ||
28 | #define IN_GCOV_TOOL 1 | |
29 | ||
30 | #include "libgcov.h" | |
31 | #include "intl.h" | |
32 | #include "diagnostic.h" | |
33 | #include "version.h" | |
34 | #include "demangle.h" | |
512cc015 | 35 | #include "gcov-io.h" |
c77556a5 RX |
36 | |
37 | /* Borrowed from basic-block.h. */ | |
38 | #define RDIV(X,Y) (((X) + (Y) / 2) / (Y)) | |
39 | ||
40 | extern gcov_position_t gcov_position(); | |
41 | extern int gcov_is_error(); | |
c77556a5 RX |
42 | |
43 | /* Verbose mode for debug. */ | |
44 | static int verbose; | |
45 | ||
46 | /* Set verbose flag. */ | |
47 | void gcov_set_verbose (void) | |
48 | { | |
49 | verbose = 1; | |
50 | } | |
51 | ||
52 | /* The following part is to read Gcda and reconstruct GCOV_INFO. */ | |
53 | ||
54 | #include "obstack.h" | |
55 | #include <unistd.h> | |
0e4a0def | 56 | #ifdef HAVE_FTW_H |
c77556a5 | 57 | #include <ftw.h> |
0e4a0def | 58 | #endif |
c77556a5 RX |
59 | |
60 | static void tag_function (unsigned, unsigned); | |
61 | static void tag_blocks (unsigned, unsigned); | |
62 | static void tag_arcs (unsigned, unsigned); | |
63 | static void tag_lines (unsigned, unsigned); | |
64 | static void tag_counters (unsigned, unsigned); | |
65 | static void tag_summary (unsigned, unsigned); | |
66 | ||
67 | /* The gcov_info for the first module. */ | |
68 | static struct gcov_info *curr_gcov_info; | |
69 | /* The gcov_info being processed. */ | |
70 | static struct gcov_info *gcov_info_head; | |
71 | /* This variable contains all the functions in current module. */ | |
72 | static struct obstack fn_info; | |
73 | /* The function being processed. */ | |
74 | static struct gcov_fn_info *curr_fn_info; | |
75 | /* The number of functions seen so far. */ | |
76 | static unsigned num_fn_info; | |
77 | /* This variable contains all the counters for current module. */ | |
78 | static int k_ctrs_mask[GCOV_COUNTERS]; | |
79 | /* The kind of counters that have been seen. */ | |
80 | static struct gcov_ctr_info k_ctrs[GCOV_COUNTERS]; | |
81 | /* Number of kind of counters that have been seen. */ | |
82 | static int k_ctrs_types; | |
512cc015 ML |
83 | /* The object summary being processed. */ |
84 | static struct gcov_summary *curr_object_summary; | |
c77556a5 RX |
85 | |
86 | /* Merge functions for counters. */ | |
87 | #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) __gcov_merge ## FN_TYPE, | |
88 | static gcov_merge_fn ctr_merge_functions[GCOV_COUNTERS] = { | |
89 | #include "gcov-counter.def" | |
90 | }; | |
91 | #undef DEF_GCOV_COUNTER | |
92 | ||
93 | /* Set the ctrs field in gcov_fn_info object FN_INFO. */ | |
94 | ||
95 | static void | |
96 | set_fn_ctrs (struct gcov_fn_info *fn_info) | |
97 | { | |
98 | int j = 0, i; | |
99 | ||
100 | for (i = 0; i < GCOV_COUNTERS; i++) | |
101 | { | |
102 | if (k_ctrs_mask[i] == 0) | |
103 | continue; | |
104 | fn_info->ctrs[j].num = k_ctrs[i].num; | |
105 | fn_info->ctrs[j].values = k_ctrs[i].values; | |
106 | j++; | |
107 | } | |
108 | if (k_ctrs_types == 0) | |
109 | k_ctrs_types = j; | |
110 | else | |
111 | gcc_assert (j == k_ctrs_types); | |
112 | } | |
113 | ||
114 | /* For each tag in gcda file, we have an entry here. | |
115 | TAG is the tag value; NAME is the tag name; and | |
116 | PROC is the handler function. */ | |
117 | ||
118 | typedef struct tag_format | |
119 | { | |
120 | unsigned tag; | |
121 | char const *name; | |
122 | void (*proc) (unsigned, unsigned); | |
123 | } tag_format_t; | |
124 | ||
125 | /* Handler table for various Tags. */ | |
126 | ||
127 | static const tag_format_t tag_table[] = | |
128 | { | |
129 | {0, "NOP", NULL}, | |
130 | {0, "UNKNOWN", NULL}, | |
131 | {0, "COUNTERS", tag_counters}, | |
132 | {GCOV_TAG_FUNCTION, "FUNCTION", tag_function}, | |
133 | {GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks}, | |
134 | {GCOV_TAG_ARCS, "ARCS", tag_arcs}, | |
135 | {GCOV_TAG_LINES, "LINES", tag_lines}, | |
136 | {GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary}, | |
c77556a5 RX |
137 | {0, NULL, NULL} |
138 | }; | |
139 | ||
140 | /* Handler for reading function tag. */ | |
141 | ||
142 | static void | |
143 | tag_function (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED) | |
144 | { | |
145 | int i; | |
146 | ||
147 | /* write out previous fn_info. */ | |
148 | if (num_fn_info) | |
149 | { | |
150 | set_fn_ctrs (curr_fn_info); | |
151 | obstack_ptr_grow (&fn_info, curr_fn_info); | |
152 | } | |
153 | ||
154 | /* Here we over allocate a bit, using GCOV_COUNTERS instead of the actual active | |
155 | counter types. */ | |
156 | curr_fn_info = (struct gcov_fn_info *) xcalloc (sizeof (struct gcov_fn_info) | |
157 | + GCOV_COUNTERS * sizeof (struct gcov_ctr_info), 1); | |
158 | ||
159 | for (i = 0; i < GCOV_COUNTERS; i++) | |
160 | k_ctrs[i].num = 0; | |
161 | k_ctrs_types = 0; | |
162 | ||
163 | curr_fn_info->key = curr_gcov_info; | |
164 | curr_fn_info->ident = gcov_read_unsigned (); | |
165 | curr_fn_info->lineno_checksum = gcov_read_unsigned (); | |
166 | curr_fn_info->cfg_checksum = gcov_read_unsigned (); | |
167 | num_fn_info++; | |
168 | ||
169 | if (verbose) | |
170 | fnotice (stdout, "tag one function id=%d\n", curr_fn_info->ident); | |
171 | } | |
172 | ||
173 | /* Handler for reading block tag. */ | |
174 | ||
175 | static void | |
176 | tag_blocks (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED) | |
177 | { | |
178 | /* TBD: gcov-tool currently does not handle gcno files. Assert here. */ | |
179 | gcc_unreachable (); | |
180 | } | |
181 | ||
182 | /* Handler for reading flow arc tag. */ | |
183 | ||
184 | static void | |
185 | tag_arcs (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED) | |
186 | { | |
187 | /* TBD: gcov-tool currently does not handle gcno files. Assert here. */ | |
188 | gcc_unreachable (); | |
189 | } | |
190 | ||
191 | /* Handler for reading line tag. */ | |
192 | ||
193 | static void | |
194 | tag_lines (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED) | |
195 | { | |
196 | /* TBD: gcov-tool currently does not handle gcno files. Assert here. */ | |
197 | gcc_unreachable (); | |
198 | } | |
199 | ||
200 | /* Handler for reading counters array tag with value as TAG and length of LENGTH. */ | |
201 | ||
202 | static void | |
203 | tag_counters (unsigned tag, unsigned length) | |
204 | { | |
205 | unsigned n_counts = GCOV_TAG_COUNTER_NUM (length); | |
206 | gcov_type *values; | |
207 | unsigned ix; | |
208 | unsigned tag_ix; | |
209 | ||
210 | tag_ix = GCOV_COUNTER_FOR_TAG (tag); | |
211 | gcc_assert (tag_ix < GCOV_COUNTERS); | |
212 | k_ctrs_mask [tag_ix] = 1; | |
213 | gcc_assert (k_ctrs[tag_ix].num == 0); | |
214 | k_ctrs[tag_ix].num = n_counts; | |
215 | ||
216 | k_ctrs[tag_ix].values = values = (gcov_type *) xmalloc (n_counts * sizeof (gcov_type)); | |
217 | gcc_assert (values); | |
218 | ||
219 | for (ix = 0; ix != n_counts; ix++) | |
220 | values[ix] = gcov_read_counter (); | |
221 | } | |
222 | ||
223 | /* Handler for reading summary tag. */ | |
224 | ||
225 | static void | |
226 | tag_summary (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED) | |
227 | { | |
512cc015 ML |
228 | curr_object_summary = (gcov_summary *) xcalloc (sizeof (gcov_summary), 1); |
229 | gcov_read_summary (curr_object_summary); | |
c77556a5 RX |
230 | } |
231 | ||
232 | /* This function is called at the end of reading a gcda file. | |
233 | It flushes the contents in curr_fn_info to gcov_info object OBJ_INFO. */ | |
234 | ||
235 | static void | |
236 | read_gcda_finalize (struct gcov_info *obj_info) | |
237 | { | |
238 | int i; | |
239 | ||
240 | set_fn_ctrs (curr_fn_info); | |
241 | obstack_ptr_grow (&fn_info, curr_fn_info); | |
242 | ||
512cc015 ML |
243 | /* We set the following fields: merge, n_functions, functions |
244 | and summary. */ | |
c77556a5 RX |
245 | obj_info->n_functions = num_fn_info; |
246 | obj_info->functions = (const struct gcov_fn_info**) obstack_finish (&fn_info); | |
247 | ||
248 | /* wrap all the counter array. */ | |
249 | for (i=0; i< GCOV_COUNTERS; i++) | |
250 | { | |
251 | if (k_ctrs_mask[i]) | |
252 | obj_info->merge[i] = ctr_merge_functions[i]; | |
253 | } | |
254 | } | |
255 | ||
256 | /* Read the content of a gcda file FILENAME, and return a gcov_info data structure. | |
257 | Program level summary CURRENT_SUMMARY will also be updated. */ | |
258 | ||
259 | static struct gcov_info * | |
260 | read_gcda_file (const char *filename) | |
261 | { | |
262 | unsigned tags[4]; | |
263 | unsigned depth = 0; | |
17d1594b | 264 | unsigned version; |
c77556a5 RX |
265 | struct gcov_info *obj_info; |
266 | int i; | |
267 | ||
268 | for (i=0; i< GCOV_COUNTERS; i++) | |
269 | k_ctrs_mask[i] = 0; | |
270 | k_ctrs_types = 0; | |
271 | ||
272 | if (!gcov_open (filename)) | |
273 | { | |
274 | fnotice (stderr, "%s:cannot open\n", filename); | |
275 | return NULL; | |
276 | } | |
277 | ||
278 | /* Read magic. */ | |
17d1594b | 279 | if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC)) |
c77556a5 RX |
280 | { |
281 | fnotice (stderr, "%s:not a gcov data file\n", filename); | |
282 | gcov_close (); | |
283 | return NULL; | |
284 | } | |
285 | ||
286 | /* Read version. */ | |
287 | version = gcov_read_unsigned (); | |
288 | if (version != GCOV_VERSION) | |
289 | { | |
290 | fnotice (stderr, "%s:incorrect gcov version %d vs %d \n", filename, version, GCOV_VERSION); | |
291 | gcov_close (); | |
292 | return NULL; | |
293 | } | |
294 | ||
295 | /* Instantiate a gcov_info object. */ | |
296 | curr_gcov_info = obj_info = (struct gcov_info *) xcalloc (sizeof (struct gcov_info) + | |
297 | sizeof (struct gcov_ctr_info) * GCOV_COUNTERS, 1); | |
298 | ||
299 | obj_info->version = version; | |
300 | obstack_init (&fn_info); | |
301 | num_fn_info = 0; | |
302 | curr_fn_info = 0; | |
512cc015 | 303 | curr_object_summary = NULL; |
c77556a5 | 304 | { |
6dc33097 NS |
305 | size_t len = strlen (filename) + 1; |
306 | char *str_dup = (char*) xmalloc (len); | |
c77556a5 | 307 | |
6dc33097 | 308 | memcpy (str_dup, filename, len); |
c77556a5 | 309 | obj_info->filename = str_dup; |
c77556a5 RX |
310 | } |
311 | ||
312 | /* Read stamp. */ | |
313 | obj_info->stamp = gcov_read_unsigned (); | |
314 | ||
315 | while (1) | |
316 | { | |
317 | gcov_position_t base; | |
318 | unsigned tag, length; | |
319 | tag_format_t const *format; | |
320 | unsigned tag_depth; | |
321 | int error; | |
322 | unsigned mask; | |
323 | ||
324 | tag = gcov_read_unsigned (); | |
325 | if (!tag) | |
9b84e7a8 | 326 | break; |
c77556a5 RX |
327 | length = gcov_read_unsigned (); |
328 | base = gcov_position (); | |
329 | mask = GCOV_TAG_MASK (tag) >> 1; | |
330 | for (tag_depth = 4; mask; mask >>= 8) | |
9b84e7a8 RX |
331 | { |
332 | if (((mask & 0xff) != 0xff)) | |
333 | { | |
a9c697b8 | 334 | warning (0, "%s:tag %qx is invalid", filename, tag); |
9b84e7a8 RX |
335 | break; |
336 | } | |
337 | tag_depth--; | |
338 | } | |
c77556a5 | 339 | for (format = tag_table; format->name; format++) |
9b84e7a8 RX |
340 | if (format->tag == tag) |
341 | goto found; | |
c77556a5 RX |
342 | format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1]; |
343 | found:; | |
344 | if (tag) | |
9b84e7a8 RX |
345 | { |
346 | if (depth && depth < tag_depth) | |
347 | { | |
348 | if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag)) | |
a9c697b8 | 349 | warning (0, "%s:tag %qx is incorrectly nested", |
9b84e7a8 RX |
350 | filename, tag); |
351 | } | |
352 | depth = tag_depth; | |
353 | tags[depth - 1] = tag; | |
354 | } | |
c77556a5 RX |
355 | |
356 | if (format->proc) | |
357 | { | |
9b84e7a8 | 358 | unsigned long actual_length; |
c77556a5 | 359 | |
9b84e7a8 | 360 | (*format->proc) (tag, length); |
c77556a5 | 361 | |
9b84e7a8 RX |
362 | actual_length = gcov_position () - base; |
363 | if (actual_length > length) | |
a9c697b8 | 364 | warning (0, "%s:record size mismatch %lu bytes overread", |
9b84e7a8 RX |
365 | filename, actual_length - length); |
366 | else if (length > actual_length) | |
a9c697b8 | 367 | warning (0, "%s:record size mismatch %lu bytes unread", |
9b84e7a8 RX |
368 | filename, length - actual_length); |
369 | } | |
c77556a5 RX |
370 | |
371 | gcov_sync (base, length); | |
372 | if ((error = gcov_is_error ())) | |
9b84e7a8 | 373 | { |
a9c697b8 MS |
374 | warning (0, error < 0 ? "%s:counter overflow at %lu" : |
375 | "%s:read error at %lu", filename, | |
9b84e7a8 RX |
376 | (long unsigned) gcov_position ()); |
377 | break; | |
378 | } | |
c77556a5 RX |
379 | } |
380 | ||
381 | read_gcda_finalize (obj_info); | |
382 | gcov_close (); | |
383 | ||
384 | return obj_info; | |
385 | } | |
386 | ||
0e4a0def | 387 | #ifdef HAVE_FTW_H |
c77556a5 RX |
388 | /* This will be called by ftw(). It opens and read a gcda file FILENAME. |
389 | Return a non-zero value to stop the tree walk. */ | |
390 | ||
391 | static int | |
392 | ftw_read_file (const char *filename, | |
393 | const struct stat *status ATTRIBUTE_UNUSED, | |
394 | int type) | |
395 | { | |
396 | int filename_len; | |
397 | int suffix_len; | |
398 | struct gcov_info *obj_info; | |
399 | ||
400 | /* Only read regular files. */ | |
401 | if (type != FTW_F) | |
402 | return 0; | |
403 | ||
404 | filename_len = strlen (filename); | |
405 | suffix_len = strlen (GCOV_DATA_SUFFIX); | |
406 | ||
407 | if (filename_len <= suffix_len) | |
408 | return 0; | |
409 | ||
410 | if (strcmp(filename + filename_len - suffix_len, GCOV_DATA_SUFFIX)) | |
411 | return 0; | |
412 | ||
413 | if (verbose) | |
414 | fnotice (stderr, "reading file: %s\n", filename); | |
415 | ||
416 | obj_info = read_gcda_file (filename); | |
417 | if (!obj_info) | |
418 | return 0; | |
419 | ||
420 | obj_info->next = gcov_info_head; | |
421 | gcov_info_head = obj_info; | |
422 | ||
423 | return 0; | |
424 | } | |
0e4a0def | 425 | #endif |
c77556a5 RX |
426 | |
427 | /* Initializer for reading a profile dir. */ | |
428 | ||
429 | static inline void | |
430 | read_profile_dir_init (void) | |
431 | { | |
432 | gcov_info_head = 0; | |
433 | } | |
434 | ||
435 | /* Driver for read a profile directory and convert into gcov_info list in memory. | |
436 | Return NULL on error, | |
6dc33097 | 437 | Return the head of gcov_info list on success. */ |
c77556a5 RX |
438 | |
439 | struct gcov_info * | |
440 | gcov_read_profile_dir (const char* dir_name, int recompute_summary ATTRIBUTE_UNUSED) | |
441 | { | |
442 | char *pwd; | |
443 | int ret; | |
444 | ||
445 | read_profile_dir_init (); | |
446 | ||
447 | if (access (dir_name, R_OK) != 0) | |
448 | { | |
449 | fnotice (stderr, "cannot access directory %s\n", dir_name); | |
450 | return NULL; | |
451 | } | |
452 | pwd = getcwd (NULL, 0); | |
453 | gcc_assert (pwd); | |
454 | ret = chdir (dir_name); | |
455 | if (ret !=0) | |
456 | { | |
457 | fnotice (stderr, "%s is not a directory\n", dir_name); | |
458 | return NULL; | |
459 | } | |
0e4a0def | 460 | #ifdef HAVE_FTW_H |
c77556a5 | 461 | ftw (".", ftw_read_file, 50); |
0e4a0def | 462 | #endif |
45309d28 | 463 | chdir (pwd); |
c77556a5 RX |
464 | free (pwd); |
465 | ||
c77556a5 RX |
466 | return gcov_info_head;; |
467 | } | |
468 | ||
469 | /* This part of the code is to merge profile counters. These | |
470 | variables are set in merge_wrapper and to be used by | |
471 | global function gcov_read_counter_mem() and gcov_get_merge_weight. */ | |
472 | ||
473 | /* We save the counter value address to this variable. */ | |
474 | static gcov_type *gcov_value_buf; | |
475 | ||
476 | /* The number of counter values to be read by current merging. */ | |
477 | static gcov_unsigned_t gcov_value_buf_size; | |
478 | ||
479 | /* The index of counter values being read. */ | |
480 | static gcov_unsigned_t gcov_value_buf_pos; | |
481 | ||
482 | /* The weight of current merging. */ | |
483 | static unsigned gcov_merge_weight; | |
484 | ||
485 | /* Read a counter value from gcov_value_buf array. */ | |
486 | ||
487 | gcov_type | |
488 | gcov_read_counter_mem (void) | |
489 | { | |
490 | gcov_type ret; | |
491 | gcc_assert (gcov_value_buf_pos < gcov_value_buf_size); | |
492 | ret = *(gcov_value_buf + gcov_value_buf_pos); | |
493 | ++gcov_value_buf_pos; | |
494 | return ret; | |
495 | } | |
496 | ||
497 | /* Return the recorded merge weight. */ | |
498 | ||
499 | unsigned | |
500 | gcov_get_merge_weight (void) | |
501 | { | |
502 | return gcov_merge_weight; | |
503 | } | |
504 | ||
505 | /* A wrapper function for merge functions. It sets up the | |
506 | value buffer and weights and then calls the merge function. */ | |
507 | ||
508 | static void | |
509 | merge_wrapper (gcov_merge_fn f, gcov_type *v1, gcov_unsigned_t n, | |
510 | gcov_type *v2, unsigned w) | |
511 | { | |
512 | gcov_value_buf = v2; | |
513 | gcov_value_buf_pos = 0; | |
514 | gcov_value_buf_size = n; | |
515 | gcov_merge_weight = w; | |
516 | (*f) (v1, n); | |
517 | } | |
518 | ||
519 | /* Offline tool to manipulate profile data. | |
520 | This tool targets on matched profiles. But it has some tolerance on | |
521 | unmatched profiles. | |
522 | When merging p1 to p2 (p2 is the dst), | |
523 | * m.gcda in p1 but not in p2: append m.gcda to p2 with specified weight; | |
524 | emit warning | |
525 | * m.gcda in p2 but not in p1: keep m.gcda in p2 and multiply by | |
526 | specified weight; emit warning. | |
527 | * m.gcda in both p1 and p2: | |
528 | ** p1->m.gcda->f checksum matches p2->m.gcda->f: simple merge. | |
529 | ** p1->m.gcda->f checksum does not matches p2->m.gcda->f: keep | |
530 | p2->m.gcda->f and | |
531 | drop p1->m.gcda->f. A warning is emitted. */ | |
532 | ||
533 | /* Add INFO2's counter to INFO1, multiplying by weight W. */ | |
534 | ||
535 | static int | |
536 | gcov_merge (struct gcov_info *info1, struct gcov_info *info2, int w) | |
537 | { | |
538 | unsigned f_ix; | |
539 | unsigned n_functions = info1->n_functions; | |
540 | int has_mismatch = 0; | |
541 | ||
542 | gcc_assert (info2->n_functions == n_functions); | |
543 | for (f_ix = 0; f_ix < n_functions; f_ix++) | |
544 | { | |
545 | unsigned t_ix; | |
546 | const struct gcov_fn_info *gfi_ptr1 = info1->functions[f_ix]; | |
547 | const struct gcov_fn_info *gfi_ptr2 = info2->functions[f_ix]; | |
548 | const struct gcov_ctr_info *ci_ptr1, *ci_ptr2; | |
549 | ||
550 | if (!gfi_ptr1 || gfi_ptr1->key != info1) | |
551 | continue; | |
552 | if (!gfi_ptr2 || gfi_ptr2->key != info2) | |
553 | continue; | |
554 | ||
555 | if (gfi_ptr1->cfg_checksum != gfi_ptr2->cfg_checksum) | |
556 | { | |
557 | fnotice (stderr, "in %s, cfg_checksum mismatch, skipping\n", | |
558 | info1->filename); | |
559 | has_mismatch = 1; | |
560 | continue; | |
561 | } | |
562 | ci_ptr1 = gfi_ptr1->ctrs; | |
563 | ci_ptr2 = gfi_ptr2->ctrs; | |
564 | for (t_ix = 0; t_ix != GCOV_COUNTERS; t_ix++) | |
565 | { | |
566 | gcov_merge_fn merge1 = info1->merge[t_ix]; | |
567 | gcov_merge_fn merge2 = info2->merge[t_ix]; | |
568 | ||
569 | gcc_assert (merge1 == merge2); | |
570 | if (!merge1) | |
571 | continue; | |
572 | gcc_assert (ci_ptr1->num == ci_ptr2->num); | |
573 | merge_wrapper (merge1, ci_ptr1->values, ci_ptr1->num, ci_ptr2->values, w); | |
574 | ci_ptr1++; | |
575 | ci_ptr2++; | |
576 | } | |
577 | } | |
578 | ||
579 | return has_mismatch; | |
580 | } | |
581 | ||
582 | /* Find and return the match gcov_info object for INFO from ARRAY. | |
583 | SIZE is the length of ARRAY. | |
584 | Return NULL if there is no match. */ | |
585 | ||
586 | static struct gcov_info * | |
9b84e7a8 RX |
587 | find_match_gcov_info (struct gcov_info **array, int size, |
588 | struct gcov_info *info) | |
c77556a5 RX |
589 | { |
590 | struct gcov_info *gi_ptr; | |
591 | struct gcov_info *ret = NULL; | |
592 | int i; | |
593 | ||
594 | for (i = 0; i < size; i++) | |
595 | { | |
596 | gi_ptr = array[i]; | |
597 | if (gi_ptr == 0) | |
598 | continue; | |
599 | if (!strcmp (gi_ptr->filename, info->filename)) | |
600 | { | |
601 | ret = gi_ptr; | |
602 | array[i] = 0; | |
603 | break; | |
604 | } | |
605 | } | |
606 | ||
607 | if (ret && ret->n_functions != info->n_functions) | |
608 | { | |
609 | fnotice (stderr, "mismatched profiles in %s (%d functions" | |
610 | " vs %d functions)\n", | |
611 | ret->filename, | |
612 | ret->n_functions, | |
613 | info->n_functions); | |
614 | ret = NULL; | |
615 | } | |
616 | return ret; | |
617 | } | |
618 | ||
619 | /* Merge the list of gcov_info objects from SRC_PROFILE to TGT_PROFILE. | |
620 | Return 0 on success: without mismatch. | |
621 | Reutrn 1 on error. */ | |
622 | ||
623 | int | |
624 | gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile, | |
625 | int w1, int w2) | |
626 | { | |
627 | struct gcov_info *gi_ptr; | |
628 | struct gcov_info **tgt_infos; | |
629 | struct gcov_info *tgt_tail; | |
630 | struct gcov_info **in_src_not_tgt; | |
631 | unsigned tgt_cnt = 0, src_cnt = 0; | |
632 | unsigned unmatch_info_cnt = 0; | |
633 | unsigned int i; | |
634 | ||
635 | for (gi_ptr = tgt_profile; gi_ptr; gi_ptr = gi_ptr->next) | |
636 | tgt_cnt++; | |
637 | for (gi_ptr = src_profile; gi_ptr; gi_ptr = gi_ptr->next) | |
638 | src_cnt++; | |
639 | tgt_infos = (struct gcov_info **) xmalloc (sizeof (struct gcov_info *) | |
640 | * tgt_cnt); | |
641 | gcc_assert (tgt_infos); | |
642 | in_src_not_tgt = (struct gcov_info **) xmalloc (sizeof (struct gcov_info *) | |
643 | * src_cnt); | |
644 | gcc_assert (in_src_not_tgt); | |
645 | ||
646 | for (gi_ptr = tgt_profile, i = 0; gi_ptr; gi_ptr = gi_ptr->next, i++) | |
647 | tgt_infos[i] = gi_ptr; | |
648 | ||
649 | tgt_tail = tgt_infos[tgt_cnt - 1]; | |
650 | ||
651 | /* First pass on tgt_profile, we multiply w1 to all counters. */ | |
652 | if (w1 > 1) | |
653 | { | |
654 | for (i = 0; i < tgt_cnt; i++) | |
655 | gcov_merge (tgt_infos[i], tgt_infos[i], w1-1); | |
656 | } | |
657 | ||
658 | /* Second pass, add src_profile to the tgt_profile. */ | |
659 | for (gi_ptr = src_profile; gi_ptr; gi_ptr = gi_ptr->next) | |
660 | { | |
661 | struct gcov_info *gi_ptr1; | |
662 | ||
663 | gi_ptr1 = find_match_gcov_info (tgt_infos, tgt_cnt, gi_ptr); | |
664 | if (gi_ptr1 == NULL) | |
665 | { | |
666 | in_src_not_tgt[unmatch_info_cnt++] = gi_ptr; | |
667 | continue; | |
668 | } | |
669 | gcov_merge (gi_ptr1, gi_ptr, w2); | |
670 | } | |
671 | ||
672 | /* For modules in src but not in tgt. We adjust the counter and append. */ | |
673 | for (i = 0; i < unmatch_info_cnt; i++) | |
674 | { | |
675 | gi_ptr = in_src_not_tgt[i]; | |
676 | gcov_merge (gi_ptr, gi_ptr, w2 - 1); | |
2e6fc1ac | 677 | gi_ptr->next = NULL; |
c77556a5 RX |
678 | tgt_tail->next = gi_ptr; |
679 | tgt_tail = gi_ptr; | |
680 | } | |
681 | ||
c2f7a665 ML |
682 | free (in_src_not_tgt); |
683 | free (tgt_infos); | |
684 | ||
c77556a5 RX |
685 | return 0; |
686 | } | |
687 | ||
688 | typedef gcov_type (*counter_op_fn) (gcov_type, void*, void*); | |
689 | ||
690 | /* Performing FN upon arc counters. */ | |
691 | ||
692 | static void | |
693 | __gcov_add_counter_op (gcov_type *counters, unsigned n_counters, | |
694 | counter_op_fn fn, void *data1, void *data2) | |
695 | { | |
696 | for (; n_counters; counters++, n_counters--) | |
697 | { | |
698 | gcov_type val = *counters; | |
699 | *counters = fn(val, data1, data2); | |
700 | } | |
701 | } | |
702 | ||
703 | /* Performing FN upon ior counters. */ | |
704 | ||
705 | static void | |
706 | __gcov_ior_counter_op (gcov_type *counters ATTRIBUTE_UNUSED, | |
707 | unsigned n_counters ATTRIBUTE_UNUSED, | |
708 | counter_op_fn fn ATTRIBUTE_UNUSED, | |
709 | void *data1 ATTRIBUTE_UNUSED, | |
710 | void *data2 ATTRIBUTE_UNUSED) | |
711 | { | |
712 | /* Do nothing. */ | |
713 | } | |
714 | ||
715 | /* Performing FN upon time-profile counters. */ | |
716 | ||
717 | static void | |
718 | __gcov_time_profile_counter_op (gcov_type *counters ATTRIBUTE_UNUSED, | |
719 | unsigned n_counters ATTRIBUTE_UNUSED, | |
720 | counter_op_fn fn ATTRIBUTE_UNUSED, | |
721 | void *data1 ATTRIBUTE_UNUSED, | |
722 | void *data2 ATTRIBUTE_UNUSED) | |
723 | { | |
724 | /* Do nothing. */ | |
725 | } | |
726 | ||
596341c7 | 727 | /* Performing FN upon TOP N counters. */ |
c77556a5 RX |
728 | |
729 | static void | |
596341c7 ML |
730 | __gcov_topn_counter_op (gcov_type *counters, unsigned n_counters, |
731 | counter_op_fn fn, void *data1, void *data2) | |
c77556a5 RX |
732 | { |
733 | unsigned i, n_measures; | |
734 | ||
735 | gcc_assert (!(n_counters % 3)); | |
736 | n_measures = n_counters / 3; | |
737 | for (i = 0; i < n_measures; i++, counters += 3) | |
738 | { | |
739 | counters[1] = fn (counters[1], data1, data2); | |
740 | counters[2] = fn (counters[2], data1, data2); | |
741 | } | |
742 | } | |
743 | ||
744 | /* Scaling the counter value V by multiplying *(float*) DATA1. */ | |
745 | ||
746 | static gcov_type | |
747 | fp_scale (gcov_type v, void *data1, void *data2 ATTRIBUTE_UNUSED) | |
748 | { | |
749 | float f = *(float *) data1; | |
750 | return (gcov_type) (v * f); | |
751 | } | |
752 | ||
753 | /* Scaling the counter value V by multiplying DATA2/DATA1. */ | |
754 | ||
755 | static gcov_type | |
756 | int_scale (gcov_type v, void *data1, void *data2) | |
757 | { | |
758 | int n = *(int *) data1; | |
759 | int d = *(int *) data2; | |
760 | return (gcov_type) ( RDIV (v,d) * n); | |
761 | } | |
762 | ||
763 | /* Type of function used to process counters. */ | |
764 | typedef void (*gcov_counter_fn) (gcov_type *, gcov_unsigned_t, | |
765 | counter_op_fn, void *, void *); | |
766 | ||
767 | /* Function array to process profile counters. */ | |
768 | #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) \ | |
769 | __gcov ## FN_TYPE ## _counter_op, | |
770 | static gcov_counter_fn ctr_functions[GCOV_COUNTERS] = { | |
771 | #include "gcov-counter.def" | |
772 | }; | |
773 | #undef DEF_GCOV_COUNTER | |
774 | ||
775 | /* Driver for scaling profile counters. */ | |
776 | ||
777 | int | |
778 | gcov_profile_scale (struct gcov_info *profile, float scale_factor, int n, int d) | |
779 | { | |
780 | struct gcov_info *gi_ptr; | |
781 | unsigned f_ix; | |
782 | ||
783 | if (verbose) | |
784 | fnotice (stdout, "scale_factor is %f or %d/%d\n", scale_factor, n, d); | |
785 | ||
786 | /* Scaling the counters. */ | |
787 | for (gi_ptr = profile; gi_ptr; gi_ptr = gi_ptr->next) | |
788 | for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++) | |
789 | { | |
790 | unsigned t_ix; | |
791 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
792 | const struct gcov_ctr_info *ci_ptr; | |
793 | ||
794 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
795 | continue; | |
796 | ||
797 | ci_ptr = gfi_ptr->ctrs; | |
798 | for (t_ix = 0; t_ix != GCOV_COUNTERS; t_ix++) | |
799 | { | |
800 | gcov_merge_fn merge = gi_ptr->merge[t_ix]; | |
801 | ||
802 | if (!merge) | |
803 | continue; | |
804 | if (d == 0) | |
805 | (*ctr_functions[t_ix]) (ci_ptr->values, ci_ptr->num, | |
806 | fp_scale, &scale_factor, NULL); | |
807 | else | |
808 | (*ctr_functions[t_ix]) (ci_ptr->values, ci_ptr->num, | |
809 | int_scale, &n, &d); | |
810 | ci_ptr++; | |
811 | } | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | /* Driver to normalize profile counters. */ | |
818 | ||
819 | int | |
820 | gcov_profile_normalize (struct gcov_info *profile, gcov_type max_val) | |
821 | { | |
822 | struct gcov_info *gi_ptr; | |
823 | gcov_type curr_max_val = 0; | |
824 | unsigned f_ix; | |
825 | unsigned int i; | |
826 | float scale_factor; | |
827 | ||
828 | /* Find the largest count value. */ | |
829 | for (gi_ptr = profile; gi_ptr; gi_ptr = gi_ptr->next) | |
830 | for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++) | |
831 | { | |
832 | unsigned t_ix; | |
833 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
834 | const struct gcov_ctr_info *ci_ptr; | |
835 | ||
836 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
837 | continue; | |
838 | ||
839 | ci_ptr = gfi_ptr->ctrs; | |
840 | for (t_ix = 0; t_ix < 1; t_ix++) | |
841 | { | |
842 | for (i = 0; i < ci_ptr->num; i++) | |
843 | if (ci_ptr->values[i] > curr_max_val) | |
844 | curr_max_val = ci_ptr->values[i]; | |
845 | ci_ptr++; | |
846 | } | |
847 | } | |
848 | ||
849 | scale_factor = (float)max_val / curr_max_val; | |
850 | if (verbose) | |
98b5dc61 | 851 | fnotice (stdout, "max_val is %" PRId64 "\n", curr_max_val); |
c77556a5 RX |
852 | |
853 | return gcov_profile_scale (profile, scale_factor, 0, 0); | |
854 | } | |
9b84e7a8 RX |
855 | |
856 | /* The following variables are defined in gcc/gcov-tool.c. */ | |
857 | extern int overlap_func_level; | |
858 | extern int overlap_obj_level; | |
859 | extern int overlap_hot_only; | |
860 | extern int overlap_use_fullname; | |
861 | extern double overlap_hot_threshold; | |
862 | ||
863 | /* Compute the overlap score of two values. The score is defined as: | |
864 | min (V1/SUM_1, V2/SUM_2) */ | |
865 | ||
866 | static double | |
867 | calculate_2_entries (const unsigned long v1, const unsigned long v2, | |
868 | const double sum_1, const double sum_2) | |
869 | { | |
870 | double val1 = (sum_1 == 0.0 ? 0.0 : v1/sum_1); | |
871 | double val2 = (sum_2 == 0.0 ? 0.0 : v2/sum_2); | |
872 | ||
873 | if (val2 < val1) | |
874 | val1 = val2; | |
875 | ||
876 | return val1; | |
877 | } | |
878 | ||
879 | /* Compute the overlap score between GCOV_INFO1 and GCOV_INFO2. | |
9b84e7a8 RX |
880 | This function also updates cumulative score CUM_1_RESULT and |
881 | CUM_2_RESULT. */ | |
882 | ||
883 | static double | |
884 | compute_one_gcov (const struct gcov_info *gcov_info1, | |
885 | const struct gcov_info *gcov_info2, | |
886 | const double sum_1, const double sum_2, | |
887 | double *cum_1_result, double *cum_2_result) | |
888 | { | |
889 | unsigned f_ix; | |
890 | double ret = 0; | |
891 | double cum_1 = 0, cum_2 = 0; | |
892 | const struct gcov_info *gcov_info = 0; | |
893 | double *cum_p; | |
894 | double sum; | |
895 | ||
896 | gcc_assert (gcov_info1 || gcov_info2); | |
897 | if (!gcov_info1) | |
898 | { | |
899 | gcov_info = gcov_info2; | |
900 | cum_p = cum_2_result; | |
901 | sum = sum_2; | |
902 | *cum_1_result = 0; | |
903 | } else | |
904 | if (!gcov_info2) | |
905 | { | |
906 | gcov_info = gcov_info1; | |
907 | cum_p = cum_1_result; | |
908 | sum = sum_1; | |
909 | *cum_2_result = 0; | |
910 | } | |
911 | ||
912 | if (gcov_info) | |
913 | { | |
914 | for (f_ix = 0; f_ix < gcov_info->n_functions; f_ix++) | |
915 | { | |
9b84e7a8 RX |
916 | const struct gcov_fn_info *gfi_ptr = gcov_info->functions[f_ix]; |
917 | if (!gfi_ptr || gfi_ptr->key != gcov_info) | |
918 | continue; | |
919 | const struct gcov_ctr_info *ci_ptr = gfi_ptr->ctrs; | |
7f3577f5 ML |
920 | unsigned c_num; |
921 | for (c_num = 0; c_num < ci_ptr->num; c_num++) | |
922 | cum_1 += ci_ptr->values[c_num] / sum; | |
9b84e7a8 RX |
923 | } |
924 | *cum_p = cum_1; | |
925 | return 0.0; | |
926 | } | |
927 | ||
928 | for (f_ix = 0; f_ix < gcov_info1->n_functions; f_ix++) | |
929 | { | |
9b84e7a8 RX |
930 | double func_cum_1 = 0.0; |
931 | double func_cum_2 = 0.0; | |
932 | double func_val = 0.0; | |
933 | int nonzero = 0; | |
934 | int hot = 0; | |
935 | const struct gcov_fn_info *gfi_ptr1 = gcov_info1->functions[f_ix]; | |
936 | const struct gcov_fn_info *gfi_ptr2 = gcov_info2->functions[f_ix]; | |
937 | ||
938 | if (!gfi_ptr1 || gfi_ptr1->key != gcov_info1) | |
939 | continue; | |
940 | if (!gfi_ptr2 || gfi_ptr2->key != gcov_info2) | |
941 | continue; | |
942 | ||
943 | const struct gcov_ctr_info *ci_ptr1 = gfi_ptr1->ctrs; | |
944 | const struct gcov_ctr_info *ci_ptr2 = gfi_ptr2->ctrs; | |
7f3577f5 ML |
945 | unsigned c_num; |
946 | for (c_num = 0; c_num < ci_ptr1->num; c_num++) | |
947 | { | |
948 | if (ci_ptr1->values[c_num] | ci_ptr2->values[c_num]) | |
949 | { | |
950 | func_val += calculate_2_entries (ci_ptr1->values[c_num], | |
951 | ci_ptr2->values[c_num], | |
952 | sum_1, sum_2); | |
953 | ||
954 | func_cum_1 += ci_ptr1->values[c_num] / sum_1; | |
955 | func_cum_2 += ci_ptr2->values[c_num] / sum_2; | |
956 | nonzero = 1; | |
957 | if (ci_ptr1->values[c_num] / sum_1 >= overlap_hot_threshold | |
958 | || ci_ptr2->values[c_num] / sum_2 >= overlap_hot_threshold) | |
959 | hot = 1; | |
960 | } | |
961 | } | |
9b84e7a8 | 962 | |
9b84e7a8 RX |
963 | ret += func_val; |
964 | cum_1 += func_cum_1; | |
965 | cum_2 += func_cum_2; | |
966 | if (overlap_func_level && nonzero && (!overlap_hot_only || hot)) | |
967 | { | |
968 | printf(" \tfunc_id=%10d \toverlap =%6.5f%% (%5.5f%% %5.5f%%)\n", | |
969 | gfi_ptr1->ident, func_val*100, func_cum_1*100, func_cum_2*100); | |
970 | } | |
971 | } | |
972 | *cum_1_result = cum_1; | |
973 | *cum_2_result = cum_2; | |
974 | return ret; | |
975 | } | |
976 | ||
977 | /* Test if all counter values in this GCOV_INFO are cold. | |
978 | "Cold" is defined as the counter value being less than | |
979 | or equal to THRESHOLD. */ | |
980 | ||
981 | static bool | |
982 | gcov_info_count_all_cold (const struct gcov_info *gcov_info, | |
983 | gcov_type threshold) | |
984 | { | |
985 | unsigned f_ix; | |
986 | ||
987 | for (f_ix = 0; f_ix < gcov_info->n_functions; f_ix++) | |
988 | { | |
9b84e7a8 RX |
989 | const struct gcov_fn_info *gfi_ptr = gcov_info->functions[f_ix]; |
990 | ||
991 | if (!gfi_ptr || gfi_ptr->key != gcov_info) | |
992 | continue; | |
993 | const struct gcov_ctr_info *ci_ptr = gfi_ptr->ctrs; | |
7f3577f5 ML |
994 | for (unsigned c_num = 0; c_num < ci_ptr->num; c_num++) |
995 | if (ci_ptr->values[c_num] > threshold) | |
996 | return false; | |
9b84e7a8 RX |
997 | } |
998 | ||
999 | return true; | |
1000 | } | |
1001 | ||
1002 | /* Test if all counter values in this GCOV_INFO are 0. */ | |
1003 | ||
1004 | static bool | |
1005 | gcov_info_count_all_zero (const struct gcov_info *gcov_info) | |
1006 | { | |
1007 | return gcov_info_count_all_cold (gcov_info, 0); | |
1008 | } | |
1009 | ||
1010 | /* A pair of matched GCOV_INFO. | |
1011 | The flag is a bitvector: | |
1012 | b0: obj1's all counts are 0; | |
1013 | b1: obj1's all counts are cold (but no 0); | |
1014 | b2: obj1 is hot; | |
1015 | b3: no obj1 to match obj2; | |
1016 | b4: obj2's all counts are 0; | |
1017 | b5: obj2's all counts are cold (but no 0); | |
1018 | b6: obj2 is hot; | |
1019 | b7: no obj2 to match obj1; | |
1020 | */ | |
1021 | struct overlap_t { | |
1022 | const struct gcov_info *obj1; | |
1023 | const struct gcov_info *obj2; | |
1024 | char flag; | |
1025 | }; | |
1026 | ||
1027 | #define FLAG_BOTH_ZERO(flag) ((flag & 0x1) && (flag & 0x10)) | |
1028 | #define FLAG_BOTH_COLD(flag) ((flag & 0x2) && (flag & 0x20)) | |
1029 | #define FLAG_ONE_HOT(flag) ((flag & 0x4) || (flag & 0x40)) | |
1030 | ||
1031 | /* Cumlative overlap dscore for profile1 and profile2. */ | |
1032 | static double overlap_sum_1, overlap_sum_2; | |
1033 | ||
9b84e7a8 RX |
1034 | /* The number of gcda files in the profiles. */ |
1035 | static unsigned gcda_files[2]; | |
1036 | ||
1037 | /* The number of unique gcda files in the profiles | |
1038 | (not existing in the other profile). */ | |
1039 | static unsigned unique_gcda_files[2]; | |
1040 | ||
1041 | /* The number of gcda files that all counter values are 0. */ | |
1042 | static unsigned zero_gcda_files[2]; | |
1043 | ||
1044 | /* The number of gcda files that all counter values are cold (but not 0). */ | |
1045 | static unsigned cold_gcda_files[2]; | |
1046 | ||
1047 | /* The number of gcda files that includes hot counter values. */ | |
1048 | static unsigned hot_gcda_files[2]; | |
1049 | ||
1050 | /* The number of gcda files with hot count value in either profiles. */ | |
1051 | static unsigned both_hot_cnt; | |
1052 | ||
1053 | /* The number of gcda files with all counts cold (but not 0) in | |
1054 | both profiles. */ | |
1055 | static unsigned both_cold_cnt; | |
1056 | ||
1057 | /* The number of gcda files with all counts 0 in both profiles. */ | |
1058 | static unsigned both_zero_cnt; | |
1059 | ||
1060 | /* Extract the basename of the filename NAME. */ | |
1061 | ||
1062 | static char * | |
1063 | extract_file_basename (const char *name) | |
1064 | { | |
1065 | char *str; | |
1066 | int len = 0; | |
1067 | char *path = xstrdup (name); | |
1068 | char sep_str[2]; | |
1069 | ||
1070 | sep_str[0] = DIR_SEPARATOR; | |
1071 | sep_str[1] = 0; | |
1072 | str = strstr(path, sep_str); | |
1073 | do{ | |
1074 | len = strlen(str) + 1; | |
1075 | path = &path[strlen(path) - len + 2]; | |
1076 | str = strstr(path, sep_str); | |
1077 | } while(str); | |
1078 | ||
1079 | return path; | |
1080 | } | |
1081 | ||
1082 | /* Utility function to get the filename. */ | |
1083 | ||
1084 | static const char * | |
1085 | get_file_basename (const char *name) | |
1086 | { | |
1087 | if (overlap_use_fullname) | |
1088 | return name; | |
1089 | return extract_file_basename (name); | |
1090 | } | |
1091 | ||
1092 | /* A utility function to set the flag for the gcda files. */ | |
1093 | ||
1094 | static void | |
1095 | set_flag (struct overlap_t *e) | |
1096 | { | |
1097 | char flag = 0; | |
1098 | ||
1099 | if (!e->obj1) | |
1100 | { | |
1101 | unique_gcda_files[1]++; | |
1102 | flag = 0x8; | |
1103 | } | |
1104 | else | |
1105 | { | |
1106 | gcda_files[0]++; | |
1107 | if (gcov_info_count_all_zero (e->obj1)) | |
1108 | { | |
1109 | zero_gcda_files[0]++; | |
1110 | flag = 0x1; | |
1111 | } | |
1112 | else | |
1113 | if (gcov_info_count_all_cold (e->obj1, overlap_sum_1 | |
1114 | * overlap_hot_threshold)) | |
1115 | { | |
1116 | cold_gcda_files[0]++; | |
1117 | flag = 0x2; | |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | hot_gcda_files[0]++; | |
1122 | flag = 0x4; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | if (!e->obj2) | |
1127 | { | |
1128 | unique_gcda_files[0]++; | |
1129 | flag |= (0x8 << 4); | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | gcda_files[1]++; | |
1134 | if (gcov_info_count_all_zero (e->obj2)) | |
1135 | { | |
1136 | zero_gcda_files[1]++; | |
1137 | flag |= (0x1 << 4); | |
1138 | } | |
1139 | else | |
1140 | if (gcov_info_count_all_cold (e->obj2, overlap_sum_2 | |
1141 | * overlap_hot_threshold)) | |
1142 | { | |
1143 | cold_gcda_files[1]++; | |
1144 | flag |= (0x2 << 4); | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | hot_gcda_files[1]++; | |
1149 | flag |= (0x4 << 4); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | gcc_assert (flag); | |
1154 | e->flag = flag; | |
1155 | } | |
1156 | ||
1157 | /* Test if INFO1 and INFO2 are from the matched source file. | |
1158 | Return 1 if they match; return 0 otherwise. */ | |
1159 | ||
1160 | static int | |
1161 | matched_gcov_info (const struct gcov_info *info1, const struct gcov_info *info2) | |
1162 | { | |
1163 | /* For FDO, we have to match the name. This can be expensive. | |
1164 | Maybe we should use hash here. */ | |
1165 | if (strcmp (info1->filename, info2->filename)) | |
1166 | return 0; | |
1167 | ||
1168 | if (info1->n_functions != info2->n_functions) | |
1169 | { | |
1170 | fnotice (stderr, "mismatched profiles in %s (%d functions" | |
1171 | " vs %d functions)\n", | |
1172 | info1->filename, | |
1173 | info1->n_functions, | |
1174 | info2->n_functions); | |
1175 | return 0; | |
1176 | } | |
1177 | return 1; | |
1178 | } | |
1179 | ||
9b84e7a8 RX |
1180 | /* Compute the overlap score of two profiles with the head of GCOV_LIST1 and |
1181 | GCOV_LIST1. Return a number ranging from [0.0, 1.0], with 0.0 meaning no | |
1182 | match and 1.0 meaning a perfect match. */ | |
1183 | ||
1184 | static double | |
1185 | calculate_overlap (struct gcov_info *gcov_list1, | |
1186 | struct gcov_info *gcov_list2) | |
1187 | { | |
9b84e7a8 RX |
1188 | unsigned list1_cnt = 0, list2_cnt= 0, all_cnt; |
1189 | unsigned int i, j; | |
9b84e7a8 RX |
1190 | const struct gcov_info *gi_ptr; |
1191 | struct overlap_t *all_infos; | |
1192 | ||
9b84e7a8 RX |
1193 | for (gi_ptr = gcov_list1; gi_ptr; gi_ptr = gi_ptr->next) |
1194 | list1_cnt++; | |
1195 | for (gi_ptr = gcov_list2; gi_ptr; gi_ptr = gi_ptr->next) | |
1196 | list2_cnt++; | |
1197 | all_cnt = list1_cnt + list2_cnt; | |
1198 | all_infos = (struct overlap_t *) xmalloc (sizeof (struct overlap_t) | |
1199 | * all_cnt * 2); | |
1200 | gcc_assert (all_infos); | |
1201 | ||
1202 | i = 0; | |
1203 | for (gi_ptr = gcov_list1; gi_ptr; gi_ptr = gi_ptr->next, i++) | |
1204 | { | |
1205 | all_infos[i].obj1 = gi_ptr; | |
1206 | all_infos[i].obj2 = 0; | |
1207 | } | |
1208 | ||
1209 | for (gi_ptr = gcov_list2; gi_ptr; gi_ptr = gi_ptr->next, i++) | |
1210 | { | |
1211 | all_infos[i].obj1 = 0; | |
1212 | all_infos[i].obj2 = gi_ptr; | |
1213 | } | |
1214 | ||
1215 | for (i = list1_cnt; i < all_cnt; i++) | |
1216 | { | |
1217 | if (all_infos[i].obj2 == 0) | |
1218 | continue; | |
1219 | for (j = 0; j < list1_cnt; j++) | |
1220 | { | |
1221 | if (all_infos[j].obj2 != 0) | |
1222 | continue; | |
1223 | if (matched_gcov_info (all_infos[i].obj2, all_infos[j].obj1)) | |
1224 | { | |
1225 | all_infos[j].obj2 = all_infos[i].obj2; | |
1226 | all_infos[i].obj2 = 0; | |
1227 | break; | |
1228 | } | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | for (i = 0; i < all_cnt; i++) | |
1233 | if (all_infos[i].obj1 || all_infos[i].obj2) | |
1234 | { | |
1235 | set_flag (all_infos + i); | |
1236 | if (FLAG_ONE_HOT (all_infos[i].flag)) | |
1237 | both_hot_cnt++; | |
1238 | if (FLAG_BOTH_COLD(all_infos[i].flag)) | |
1239 | both_cold_cnt++; | |
1240 | if (FLAG_BOTH_ZERO(all_infos[i].flag)) | |
1241 | both_zero_cnt++; | |
1242 | } | |
1243 | ||
1244 | double prg_val = 0; | |
1245 | double sum_val = 0; | |
1246 | double sum_cum_1 = 0; | |
1247 | double sum_cum_2 = 0; | |
1248 | ||
1249 | for (i = 0; i < all_cnt; i++) | |
1250 | { | |
1251 | double val; | |
1252 | double cum_1, cum_2; | |
1253 | const char *filename; | |
1254 | ||
1255 | if (all_infos[i].obj1 == 0 && all_infos[i].obj2 == 0) | |
1256 | continue; | |
1257 | if (FLAG_BOTH_ZERO (all_infos[i].flag)) | |
1258 | continue; | |
1259 | ||
1260 | if (all_infos[i].obj1) | |
1261 | filename = get_file_basename (all_infos[i].obj1->filename); | |
1262 | else | |
1263 | filename = get_file_basename (all_infos[i].obj2->filename); | |
1264 | ||
1265 | if (overlap_func_level) | |
1266 | printf("\n processing %36s:\n", filename); | |
1267 | ||
1268 | val = compute_one_gcov (all_infos[i].obj1, all_infos[i].obj2, | |
1269 | overlap_sum_1, overlap_sum_2, &cum_1, &cum_2); | |
1270 | ||
1271 | if (overlap_obj_level && (!overlap_hot_only || FLAG_ONE_HOT (all_infos[i].flag))) | |
1272 | { | |
1273 | printf(" obj=%36s overlap = %6.2f%% (%5.2f%% %5.2f%%)\n", | |
1274 | filename, val*100, cum_1*100, cum_2*100); | |
1275 | sum_val += val; | |
1276 | sum_cum_1 += cum_1; | |
1277 | sum_cum_2 += cum_2; | |
1278 | } | |
1279 | ||
1280 | prg_val += val; | |
1281 | ||
1282 | } | |
1283 | ||
c2f7a665 ML |
1284 | free (all_infos); |
1285 | ||
9b84e7a8 RX |
1286 | if (overlap_obj_level) |
1287 | printf(" SUM:%36s overlap = %6.2f%% (%5.2f%% %5.2f%%)\n", | |
1288 | "", sum_val*100, sum_cum_1*100, sum_cum_2*100); | |
1289 | ||
1290 | printf (" Statistics:\n" | |
1291 | " profile1_# profile2_# overlap_#\n"); | |
1292 | printf (" gcda files: %12u\t%12u\t%12u\n", gcda_files[0], gcda_files[1], | |
98b5dc61 | 1293 | gcda_files[0]-unique_gcda_files[0]); |
9b84e7a8 | 1294 | printf (" unique files: %12u\t%12u\n", unique_gcda_files[0], |
98b5dc61 | 1295 | unique_gcda_files[1]); |
9b84e7a8 | 1296 | printf (" hot files: %12u\t%12u\t%12u\n", hot_gcda_files[0], |
98b5dc61 | 1297 | hot_gcda_files[1], both_hot_cnt); |
9b84e7a8 | 1298 | printf (" cold files: %12u\t%12u\t%12u\n", cold_gcda_files[0], |
98b5dc61 | 1299 | cold_gcda_files[1], both_cold_cnt); |
9b84e7a8 | 1300 | printf (" zero files: %12u\t%12u\t%12u\n", zero_gcda_files[0], |
98b5dc61 | 1301 | zero_gcda_files[1], both_zero_cnt); |
9b84e7a8 RX |
1302 | |
1303 | return prg_val; | |
1304 | } | |
1305 | ||
e0c8eebf ML |
1306 | /* Compute the overlap score of two lists of gcov_info objects PROFILE1 and |
1307 | PROFILE2. | |
9b84e7a8 RX |
1308 | Return 0 on success: without mismatch. Reutrn 1 on error. */ |
1309 | ||
1310 | int | |
1311 | gcov_profile_overlap (struct gcov_info *profile1, struct gcov_info *profile2) | |
1312 | { | |
1313 | double result; | |
1314 | ||
1315 | result = calculate_overlap (profile1, profile2); | |
1316 | ||
1317 | if (result > 0) | |
1318 | { | |
1319 | printf("\nProgram level overlap result is %3.2f%%\n\n", result*100); | |
1320 | return 0; | |
1321 | } | |
1322 | return 1; | |
1323 | } |