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ca29da43 | 1 | /* Read and write coverage files, and associated functionality. |
a945c346 | 2 | Copyright (C) 1990-2024 Free Software Foundation, Inc. |
ca29da43 NS |
3 | Contributed by James E. Wilson, UC Berkeley/Cygnus Support; |
4 | based on some ideas from Dain Samples of UC Berkeley. | |
5 | Further mangling by Bob Manson, Cygnus Support. | |
6 | Further mangled by Nathan Sidwell, CodeSourcery | |
7 | ||
8 | This file is part of GCC. | |
9 | ||
10 | GCC is free software; you can redistribute it and/or modify it under | |
11 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 12 | Software Foundation; either version 3, or (at your option) any later |
ca29da43 NS |
13 | version. |
14 | ||
15 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
21 | along with GCC; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
ca29da43 NS |
23 | |
24 | ||
25 | #define GCOV_LINKAGE | |
26 | ||
27 | #include "config.h" | |
28 | #include "system.h" | |
29 | #include "coretypes.h" | |
c7131fb2 | 30 | #include "backend.h" |
957060b5 | 31 | #include "target.h" |
ca29da43 NS |
32 | #include "rtl.h" |
33 | #include "tree.h" | |
957060b5 | 34 | #include "tree-pass.h" |
4d0cdd0c | 35 | #include "memmodel.h" |
957060b5 | 36 | #include "tm_p.h" |
d8a2d370 | 37 | #include "stringpool.h" |
957060b5 AM |
38 | #include "cgraph.h" |
39 | #include "coverage.h" | |
40 | #include "diagnostic-core.h" | |
957060b5 | 41 | #include "fold-const.h" |
d8a2d370 | 42 | #include "stor-layout.h" |
ca29da43 | 43 | #include "output.h" |
ca29da43 | 44 | #include "toplev.h" |
ca29da43 | 45 | #include "langhooks.h" |
c9b9aa64 | 46 | #include "tree-iterator.h" |
103ff0d6 TJ |
47 | #include "context.h" |
48 | #include "pass_manager.h" | |
650cfcab | 49 | #include "intl.h" |
be3c16c4 | 50 | #include "auto-profile.h" |
512cc015 | 51 | #include "profile.h" |
44b32683 | 52 | #include "diagnostic.h" |
f8884b9c | 53 | #include "varasm.h" |
cde87638 | 54 | #include "file-prefix-map.h" |
ca29da43 | 55 | |
e53b6e56 | 56 | #include "gcov-io.cc" |
ca29da43 | 57 | |
b724567e | 58 | struct GTY((chain_next ("%h.next"))) coverage_data |
ca29da43 | 59 | { |
b724567e | 60 | struct coverage_data *next; /* next function */ |
159b3be1 | 61 | unsigned ident; /* function ident */ |
10adac51 XDL |
62 | unsigned lineno_checksum; /* function lineno checksum */ |
63 | unsigned cfg_checksum; /* function cfg checksum */ | |
5366b186 NS |
64 | tree fn_decl; /* the function decl */ |
65 | tree ctr_vars[GCOV_COUNTERS]; /* counter variables. */ | |
ca29da43 NS |
66 | }; |
67 | ||
68 | /* Counts information for a function. */ | |
526ceb68 | 69 | struct counts_entry : pointer_hash <counts_entry> |
ca29da43 NS |
70 | { |
71 | /* We hash by */ | |
796621e8 | 72 | unsigned ident; |
cdb23767 | 73 | unsigned ctr; |
159b3be1 | 74 | |
ca29da43 | 75 | /* Store */ |
10adac51 XDL |
76 | unsigned lineno_checksum; |
77 | unsigned cfg_checksum; | |
ca29da43 | 78 | gcov_type *counts; |
0418f237 | 79 | unsigned n_counts; |
5deac340 RG |
80 | |
81 | /* hash_table support. */ | |
67f58944 TS |
82 | static inline hashval_t hash (const counts_entry *); |
83 | static int equal (const counts_entry *, const counts_entry *); | |
84 | static void remove (counts_entry *); | |
526ceb68 | 85 | }; |
ca29da43 | 86 | |
b724567e NS |
87 | static GTY(()) struct coverage_data *functions_head = 0; |
88 | static struct coverage_data **functions_tail = &functions_head; | |
6d70e6be | 89 | static unsigned no_coverage = 0; |
ca29da43 | 90 | |
cdb23767 NS |
91 | /* Cumulative counter information for whole program. */ |
92 | static unsigned prg_ctr_mask; /* Mask of counter types generated. */ | |
ca29da43 | 93 | |
cdb23767 | 94 | /* Counter information for current function. */ |
71c0e7fc | 95 | static unsigned fn_ctr_mask; /* Mask of counters used. */ |
5366b186 | 96 | static GTY(()) tree fn_v_ctrs[GCOV_COUNTERS]; /* counter variables. */ |
6d70e6be NS |
97 | static unsigned fn_n_ctrs[GCOV_COUNTERS]; /* Counters allocated. */ |
98 | static unsigned fn_b_ctrs[GCOV_COUNTERS]; /* Allocation base. */ | |
ca29da43 | 99 | |
b724567e NS |
100 | /* Coverage info VAR_DECL and function info type nodes. */ |
101 | static GTY(()) tree gcov_info_var; | |
102 | static GTY(()) tree gcov_fn_info_type; | |
103 | static GTY(()) tree gcov_fn_info_ptr_type; | |
104 | ||
efbb59b2 SB |
105 | /* Name of the notes (gcno) output file. The "bbg" prefix is for |
106 | historical reasons, when the notes file contained only the | |
107 | basic block graph notes. | |
108 | If this is NULL we're not writing to the notes file. */ | |
ca29da43 | 109 | static char *bbg_file_name; |
ca29da43 | 110 | |
efbb59b2 | 111 | /* File stamp for notes file. */ |
cb686b99 NS |
112 | static unsigned bbg_file_stamp; |
113 | ||
efbb59b2 | 114 | /* Name of the count data (gcda) file. */ |
ca29da43 NS |
115 | static char *da_file_name; |
116 | ||
09780dfb | 117 | /* The names of merge functions for counters. */ |
c77556a5 RX |
118 | #define STR(str) #str |
119 | #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) STR(__gcov_merge ## FN_TYPE), | |
120 | static const char *const ctr_merge_functions[GCOV_COUNTERS] = { | |
121 | #include "gcov-counter.def" | |
122 | }; | |
123 | #undef DEF_GCOV_COUNTER | |
124 | #undef STR | |
125 | ||
126 | #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) NAME, | |
127 | static const char *const ctr_names[GCOV_COUNTERS] = { | |
128 | #include "gcov-counter.def" | |
129 | }; | |
130 | #undef DEF_GCOV_COUNTER | |
09780dfb | 131 | |
ca29da43 | 132 | /* Forward declarations. */ |
5366b186 | 133 | static tree build_var (tree, tree, int); |
251e2ff2 RS |
134 | \f |
135 | /* Return the type node for gcov_type. */ | |
136 | ||
137 | tree | |
138 | get_gcov_type (void) | |
139 | { | |
f67f4dff | 140 | scalar_int_mode mode |
23d33775 | 141 | = smallest_int_mode_for_size (LONG_LONG_TYPE_SIZE > 32 ? 64 : 32); |
0f250839 | 142 | return lang_hooks.types.type_for_mode (mode, false); |
251e2ff2 RS |
143 | } |
144 | ||
145 | /* Return the type node for gcov_unsigned_t. */ | |
ca29da43 | 146 | |
251e2ff2 RS |
147 | static tree |
148 | get_gcov_unsigned_t (void) | |
149 | { | |
f67f4dff | 150 | scalar_int_mode mode = smallest_int_mode_for_size (32); |
0f250839 | 151 | return lang_hooks.types.type_for_mode (mode, true); |
251e2ff2 | 152 | } |
ca29da43 | 153 | \f |
0823efed | 154 | inline hashval_t |
67f58944 | 155 | counts_entry::hash (const counts_entry *entry) |
ca29da43 | 156 | { |
796621e8 | 157 | return entry->ident * GCOV_COUNTERS + entry->ctr; |
ca29da43 NS |
158 | } |
159 | ||
0823efed | 160 | inline int |
67f58944 | 161 | counts_entry::equal (const counts_entry *entry1, const counts_entry *entry2) |
ca29da43 | 162 | { |
796621e8 | 163 | return entry1->ident == entry2->ident && entry1->ctr == entry2->ctr; |
ca29da43 NS |
164 | } |
165 | ||
0823efed | 166 | inline void |
67f58944 | 167 | counts_entry::remove (counts_entry *entry) |
ca29da43 | 168 | { |
ca29da43 NS |
169 | free (entry->counts); |
170 | free (entry); | |
171 | } | |
172 | ||
0823efed | 173 | /* Hash table of count data. */ |
c203e8a7 | 174 | static hash_table<counts_entry> *counts_hash; |
0823efed | 175 | |
ca29da43 NS |
176 | /* Read in the counts file, if available. */ |
177 | ||
178 | static void | |
159b3be1 | 179 | read_counts_file (void) |
ca29da43 | 180 | { |
9b514d25 | 181 | gcov_unsigned_t fn_ident = 0; |
7d63a2fa | 182 | gcov_unsigned_t tag; |
24a4a033 | 183 | int is_error = 0; |
10adac51 XDL |
184 | unsigned lineno_checksum = 0; |
185 | unsigned cfg_checksum = 0; | |
7d63a2fa | 186 | |
ca29da43 NS |
187 | if (!gcov_open (da_file_name, 1)) |
188 | return; | |
159b3be1 | 189 | |
160e2e4f | 190 | if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC)) |
ca29da43 | 191 | { |
d4ee4d25 | 192 | warning (0, "%qs is not a gcov data file", da_file_name); |
ca29da43 NS |
193 | gcov_close (); |
194 | return; | |
195 | } | |
160e2e4f | 196 | else if ((tag = gcov_read_unsigned ()) != GCOV_VERSION) |
ca29da43 | 197 | { |
330d2e2a NS |
198 | char v[4], e[4]; |
199 | ||
200 | GCOV_UNSIGNED2STRING (v, tag); | |
201 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
159b3be1 | 202 | |
d4ee4d25 | 203 | warning (0, "%qs is version %q.*s, expected version %q.*s", |
cb83302c | 204 | da_file_name, 4, v, 4, e); |
ca29da43 NS |
205 | gcov_close (); |
206 | return; | |
207 | } | |
159b3be1 | 208 | |
cb686b99 NS |
209 | /* Read the stamp, used for creating a generation count. */ |
210 | tag = gcov_read_unsigned (); | |
211 | bbg_file_stamp = crc32_unsigned (bbg_file_stamp, tag); | |
b8698a0f | 212 | |
72e0c742 ML |
213 | /* Read checksum. */ |
214 | gcov_read_unsigned (); | |
215 | ||
c203e8a7 | 216 | counts_hash = new hash_table<counts_entry> (10); |
7d63a2fa | 217 | while ((tag = gcov_read_unsigned ())) |
ca29da43 | 218 | { |
7d63a2fa | 219 | gcov_unsigned_t length; |
9b514d25 | 220 | gcov_position_t offset; |
159b3be1 | 221 | |
ca29da43 NS |
222 | length = gcov_read_unsigned (); |
223 | offset = gcov_position (); | |
224 | if (tag == GCOV_TAG_FUNCTION) | |
225 | { | |
5366b186 | 226 | if (length) |
ca29da43 | 227 | { |
5366b186 NS |
228 | fn_ident = gcov_read_unsigned (); |
229 | lineno_checksum = gcov_read_unsigned (); | |
230 | cfg_checksum = gcov_read_unsigned (); | |
ca29da43 | 231 | } |
5366b186 NS |
232 | else |
233 | fn_ident = lineno_checksum = cfg_checksum = 0; | |
ca29da43 | 234 | } |
512cc015 | 235 | else if (tag == GCOV_TAG_OBJECT_SUMMARY) |
ca29da43 | 236 | { |
512cc015 ML |
237 | profile_info = XCNEW (gcov_summary); |
238 | profile_info->runs = gcov_read_unsigned (); | |
239 | profile_info->sum_max = gcov_read_unsigned (); | |
ca29da43 | 240 | } |
796621e8 | 241 | else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident) |
ca29da43 | 242 | { |
526ceb68 | 243 | counts_entry **slot, *entry, elt; |
ece21ff6 ML |
244 | int read_length = (int)length; |
245 | length = read_length > 0 ? read_length : 0; | |
246 | unsigned n_counts = GCOV_TAG_COUNTER_NUM (abs (read_length)); | |
ca29da43 NS |
247 | unsigned ix; |
248 | ||
796621e8 | 249 | elt.ident = fn_ident; |
cdb23767 | 250 | elt.ctr = GCOV_COUNTER_FOR_TAG (tag); |
ca29da43 | 251 | |
c203e8a7 | 252 | slot = counts_hash->find_slot (&elt, INSERT); |
ca29da43 NS |
253 | entry = *slot; |
254 | if (!entry) | |
255 | { | |
526ceb68 | 256 | *slot = entry = XCNEW (counts_entry); |
10adac51 | 257 | entry->ident = fn_ident; |
cdb23767 | 258 | entry->ctr = elt.ctr; |
10adac51 XDL |
259 | entry->lineno_checksum = lineno_checksum; |
260 | entry->cfg_checksum = cfg_checksum; | |
5ed6ace5 | 261 | entry->counts = XCNEWVEC (gcov_type, n_counts); |
0418f237 | 262 | entry->n_counts = n_counts; |
ca29da43 | 263 | } |
10adac51 XDL |
264 | else if (entry->lineno_checksum != lineno_checksum |
265 | || entry->cfg_checksum != cfg_checksum) | |
ca29da43 | 266 | { |
32387f76 | 267 | error ("profile data for function %u is corrupted", fn_ident); |
10adac51 XDL |
268 | error ("checksum is (%x,%x) instead of (%x,%x)", |
269 | entry->lineno_checksum, entry->cfg_checksum, | |
270 | lineno_checksum, cfg_checksum); | |
c203e8a7 TS |
271 | delete counts_hash; |
272 | counts_hash = NULL; | |
24a4a033 JH |
273 | break; |
274 | } | |
ece21ff6 ML |
275 | if (read_length > 0) |
276 | for (ix = 0; ix != n_counts; ix++) | |
277 | entry->counts[ix] = gcov_read_counter (); | |
ca29da43 | 278 | } |
474f141e | 279 | gcov_sync (offset, length); |
24a4a033 | 280 | if ((is_error = gcov_is_error ())) |
00cf2913 | 281 | { |
324ff1a0 JJ |
282 | error (is_error < 0 |
283 | ? G_("%qs has overflowed") | |
284 | : G_("%qs is corrupted"), | |
00cf2913 | 285 | da_file_name); |
c203e8a7 TS |
286 | delete counts_hash; |
287 | counts_hash = NULL; | |
00cf2913 NS |
288 | break; |
289 | } | |
7d63a2fa | 290 | } |
159b3be1 | 291 | |
ca29da43 NS |
292 | gcov_close (); |
293 | } | |
294 | ||
295 | /* Returns the counters for a particular tag. */ | |
296 | ||
297 | gcov_type * | |
512cc015 | 298 | get_coverage_counts (unsigned counter, unsigned cfg_checksum, |
0418f237 | 299 | unsigned lineno_checksum, unsigned int n_counts) |
ca29da43 | 300 | { |
526ceb68 | 301 | counts_entry *entry, elt; |
ca29da43 | 302 | |
71c0e7fc | 303 | /* No hash table, no counts. */ |
c203e8a7 | 304 | if (!counts_hash) |
ca29da43 NS |
305 | { |
306 | static int warned = 0; | |
307 | ||
bc162b0e | 308 | if (!warned++) |
4f5b9c80 | 309 | { |
bc162b0e IB |
310 | warning (OPT_Wmissing_profile, |
311 | "%qs profile count data file not found", | |
312 | da_file_name); | |
313 | if (dump_enabled_p ()) | |
314 | { | |
315 | dump_user_location_t loc | |
316 | = dump_user_location_t::from_location_t (input_location); | |
ed2d9d37 | 317 | dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, |
88307040 ML |
318 | "file %s not found, %s\n", da_file_name, |
319 | (flag_guess_branch_prob | |
320 | ? "execution counts estimated" | |
321 | : "execution counts assumed to be zero")); | |
bc162b0e | 322 | } |
4f5b9c80 | 323 | } |
ca29da43 NS |
324 | return NULL; |
325 | } | |
028d4092 | 326 | if (param_profile_func_internal_id) |
2243ba51 XDL |
327 | elt.ident = current_function_funcdef_no + 1; |
328 | else | |
329 | { | |
330 | gcc_assert (coverage_node_map_initialized_p ()); | |
962e88a9 | 331 | elt.ident = cgraph_node::get (current_function_decl)->profile_id; |
2243ba51 | 332 | } |
cdb23767 | 333 | elt.ctr = counter; |
c203e8a7 | 334 | entry = counts_hash->find (&elt); |
512cc015 | 335 | if (!entry) |
bc162b0e IB |
336 | { |
337 | if (counter == GCOV_COUNTER_ARCS) | |
338 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
339 | OPT_Wmissing_profile, | |
340 | "profile for function %qD not found in profile data", | |
341 | current_function_decl); | |
342 | /* The function was not emitted, or is weak and not chosen in the | |
343 | final executable. Silently fail, because there's nothing we | |
344 | can do about it. */ | |
345 | return NULL; | |
346 | } | |
871e5ada ML |
347 | |
348 | if (entry->cfg_checksum != cfg_checksum | |
349 | || (counter != GCOV_COUNTER_V_INDIR | |
350 | && counter != GCOV_COUNTER_V_TOPN | |
351 | && entry->n_counts != n_counts)) | |
24a4a033 | 352 | { |
16c1c158 | 353 | static int warned = 0; |
650cfcab | 354 | bool warning_printed = false; |
16c1c158 | 355 | |
0418f237 JH |
356 | if (entry->n_counts != n_counts) |
357 | warning_printed = | |
358 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
359 | OPT_Wcoverage_mismatch, | |
360 | "number of counters in profile data for function %qD " | |
361 | "does not match " | |
362 | "its profile data (counter %qs, expected %i and have %i)", | |
363 | current_function_decl, | |
364 | ctr_names[counter], entry->n_counts, n_counts); | |
365 | else | |
366 | warning_printed = | |
367 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
368 | OPT_Wcoverage_mismatch, | |
369 | "the control flow of function %qD does not match " | |
370 | "its profile data (counter %qs)", current_function_decl, | |
371 | ctr_names[counter]); | |
103ff0d6 | 372 | if (warning_printed && dump_enabled_p ()) |
16c1c158 | 373 | { |
4f5b9c80 | 374 | dump_user_location_t loc |
732779d0 | 375 | = dump_user_location_t::from_function_decl (current_function_decl); |
ed2d9d37 | 376 | dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, |
103ff0d6 TJ |
377 | "use -Wno-error=coverage-mismatch to tolerate " |
378 | "the mismatch but performance may drop if the " | |
e645e942 | 379 | "function is hot\n"); |
650cfcab | 380 | |
1da2ed5f | 381 | if (!seen_error () |
650cfcab NV |
382 | && !warned++) |
383 | { | |
ed2d9d37 | 384 | dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, |
e645e942 | 385 | "coverage mismatch ignored\n"); |
ed2d9d37 | 386 | dump_printf (MSG_MISSED_OPTIMIZATION, |
e645e942 TJ |
387 | flag_guess_branch_prob |
388 | ? G_("execution counts estimated\n") | |
389 | : G_("execution counts assumed to be zero\n")); | |
650cfcab | 390 | if (!flag_guess_branch_prob) |
ed2d9d37 | 391 | dump_printf (MSG_MISSED_OPTIMIZATION, |
e645e942 | 392 | "this can result in poorly optimized code\n"); |
650cfcab | 393 | } |
16c1c158 RG |
394 | } |
395 | ||
396 | return NULL; | |
ca29da43 | 397 | } |
5366b186 NS |
398 | else if (entry->lineno_checksum != lineno_checksum) |
399 | { | |
bda815c5 ML |
400 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), |
401 | OPT_Wcoverage_mismatch, | |
402 | "source locations for function %qD have changed," | |
403 | " the profile data may be out of date", | |
404 | current_function_decl); | |
5366b186 | 405 | } |
159b3be1 | 406 | |
ca29da43 NS |
407 | return entry->counts; |
408 | } | |
cdb23767 | 409 | |
6356f892 | 410 | /* Allocate NUM counters of type COUNTER. Returns nonzero if the |
6d70e6be | 411 | allocation succeeded. */ |
cdb23767 | 412 | |
6d70e6be NS |
413 | int |
414 | coverage_counter_alloc (unsigned counter, unsigned num) | |
cdb23767 | 415 | { |
6d70e6be NS |
416 | if (no_coverage) |
417 | return 0; | |
159b3be1 | 418 | |
6d70e6be NS |
419 | if (!num) |
420 | return 1; | |
159b3be1 | 421 | |
5366b186 | 422 | if (!fn_v_ctrs[counter]) |
cdb23767 | 423 | { |
5366b186 NS |
424 | tree array_type = build_array_type (get_gcov_type (), NULL_TREE); |
425 | ||
426 | fn_v_ctrs[counter] | |
427 | = build_var (current_function_decl, array_type, counter); | |
cdb23767 | 428 | } |
5366b186 | 429 | |
6d70e6be NS |
430 | fn_b_ctrs[counter] = fn_n_ctrs[counter]; |
431 | fn_n_ctrs[counter] += num; | |
5366b186 | 432 | |
6d70e6be NS |
433 | fn_ctr_mask |= 1 << counter; |
434 | return 1; | |
435 | } | |
cdb23767 | 436 | |
6de9cd9a DN |
437 | /* Generate a tree to access COUNTER NO. */ |
438 | ||
439 | tree | |
440 | tree_coverage_counter_ref (unsigned counter, unsigned no) | |
441 | { | |
070e3969 | 442 | tree gcov_type_node = get_gcov_type (); |
6de9cd9a | 443 | |
341c100f | 444 | gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); |
6de9cd9a | 445 | |
5366b186 NS |
446 | no += fn_b_ctrs[counter]; |
447 | ||
6de9cd9a | 448 | /* "no" here is an array index, scaled to bytes later. */ |
5366b186 | 449 | return build4 (ARRAY_REF, gcov_type_node, fn_v_ctrs[counter], |
f81b1a3d | 450 | build_int_cst (integer_type_node, no), NULL, NULL); |
6de9cd9a | 451 | } |
fc9161c1 RG |
452 | |
453 | /* Generate a tree to access the address of COUNTER NO. */ | |
454 | ||
455 | tree | |
456 | tree_coverage_counter_addr (unsigned counter, unsigned no) | |
457 | { | |
458 | tree gcov_type_node = get_gcov_type (); | |
459 | ||
460 | gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); | |
5366b186 | 461 | no += fn_b_ctrs[counter]; |
628c189e | 462 | |
fc9161c1 RG |
463 | /* "no" here is an array index, scaled to bytes later. */ |
464 | return build_fold_addr_expr (build4 (ARRAY_REF, gcov_type_node, | |
5366b186 | 465 | fn_v_ctrs[counter], |
f81b1a3d | 466 | build_int_cst (integer_type_node, no), |
fc9161c1 RG |
467 | NULL, NULL)); |
468 | } | |
ca29da43 | 469 | \f |
10adac51 | 470 | |
ca29da43 | 471 | /* Generate a checksum for a string. CHKSUM is the current |
71c0e7fc | 472 | checksum. */ |
ca29da43 NS |
473 | |
474 | static unsigned | |
20c361f3 | 475 | coverage_checksum_string (unsigned chksum, const char *string) |
ca29da43 | 476 | { |
20c361f3 JH |
477 | int i; |
478 | char *dup = NULL; | |
479 | ||
480 | /* Look for everything that looks if it were produced by | |
5880f14f | 481 | get_file_function_name and zero out the second part |
20c361f3 JH |
482 | that may result from flag_random_seed. This is not critical |
483 | as the checksums are used only for sanity checking. */ | |
484 | for (i = 0; string[i]; i++) | |
ca29da43 | 485 | { |
2b557972 | 486 | int offset = 0; |
6ba3079d | 487 | if (startswith (string + i, "_GLOBAL__N_")) |
2b557972 | 488 | offset = 11; |
6ba3079d | 489 | if (startswith (string + i, "_GLOBAL__")) |
2b557972 JH |
490 | offset = 9; |
491 | ||
492 | /* C++ namespaces do have scheme: | |
493 | _GLOBAL__N_<filename>_<wrongmagicnumber>_<magicnumber>functionname | |
494 | since filename might contain extra underscores there seems | |
495 | to be no better chance then walk all possible offsets looking | |
fa10beec | 496 | for magicnumber. */ |
2b557972 | 497 | if (offset) |
1f651229 JH |
498 | { |
499 | for (i = i + offset; string[i]; i++) | |
500 | if (string[i]=='_') | |
501 | { | |
502 | int y; | |
503 | ||
504 | for (y = 1; y < 9; y++) | |
505 | if (!(string[i + y] >= '0' && string[i + y] <= '9') | |
506 | && !(string[i + y] >= 'A' && string[i + y] <= 'F')) | |
507 | break; | |
508 | if (y != 9 || string[i + 9] != '_') | |
509 | continue; | |
510 | for (y = 10; y < 18; y++) | |
511 | if (!(string[i + y] >= '0' && string[i + y] <= '9') | |
512 | && !(string[i + y] >= 'A' && string[i + y] <= 'F')) | |
513 | break; | |
514 | if (y != 18) | |
515 | continue; | |
516 | if (!dup) | |
517 | string = dup = xstrdup (string); | |
518 | for (y = 10; y < 18; y++) | |
519 | dup[i + y] = '0'; | |
520 | } | |
521 | break; | |
522 | } | |
ca29da43 | 523 | } |
20c361f3 JH |
524 | |
525 | chksum = crc32_string (chksum, string); | |
04695783 | 526 | free (dup); |
159b3be1 | 527 | |
ca29da43 NS |
528 | return chksum; |
529 | } | |
530 | ||
531 | /* Compute checksum for the current function. We generate a CRC32. */ | |
532 | ||
10adac51 XDL |
533 | unsigned |
534 | coverage_compute_lineno_checksum (void) | |
ca29da43 | 535 | { |
a281759f PB |
536 | expanded_location xloc |
537 | = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); | |
538 | unsigned chksum = xloc.line; | |
ca29da43 | 539 | |
bc91c436 ML |
540 | if (xloc.file) |
541 | chksum = coverage_checksum_string (chksum, xloc.file); | |
20c361f3 | 542 | chksum = coverage_checksum_string |
ca29da43 NS |
543 | (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl))); |
544 | ||
545 | return chksum; | |
546 | } | |
10adac51 | 547 | |
2fa3d31b JH |
548 | /* Compute profile ID. This is better to be unique in whole program. */ |
549 | ||
550 | unsigned | |
551 | coverage_compute_profile_id (struct cgraph_node *n) | |
552 | { | |
cb90235d | 553 | unsigned chksum; |
2fa3d31b | 554 | |
cb90235d | 555 | /* Externally visible symbols have unique name. */ |
7e044261 | 556 | if (TREE_PUBLIC (n->decl) || DECL_EXTERNAL (n->decl) || n->unique_name) |
cb90235d JH |
557 | { |
558 | chksum = coverage_checksum_string | |
559 | (0, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); | |
560 | } | |
561 | else | |
562 | { | |
563 | expanded_location xloc | |
564 | = expand_location (DECL_SOURCE_LOCATION (n->decl)); | |
028d4092 | 565 | bool use_name_only = (param_profile_func_internal_id == 0); |
cb90235d | 566 | |
2243ba51 | 567 | chksum = (use_name_only ? 0 : xloc.line); |
bc91c436 ML |
568 | if (xloc.file) |
569 | chksum = coverage_checksum_string (chksum, xloc.file); | |
cb90235d JH |
570 | chksum = coverage_checksum_string |
571 | (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); | |
2243ba51 | 572 | if (!use_name_only && first_global_object_name) |
cb90235d JH |
573 | chksum = coverage_checksum_string |
574 | (chksum, first_global_object_name); | |
7553bd35 ML |
575 | char *base_name = xstrdup (aux_base_name); |
576 | if (endswith (base_name, ".gk")) | |
577 | base_name[strlen (base_name) - 3] = '\0'; | |
578 | chksum = coverage_checksum_string (chksum, base_name); | |
579 | free (base_name); | |
cb90235d | 580 | } |
2fa3d31b | 581 | |
7e044261 JH |
582 | /* Non-negative integers are hopefully small enough to fit in all targets. |
583 | Gcov file formats wants non-zero function IDs. */ | |
584 | chksum = chksum & 0x7fffffff; | |
585 | return chksum + (!chksum); | |
2fa3d31b JH |
586 | } |
587 | ||
a96bf0d3 | 588 | /* Compute cfg checksum for the function FN given as argument. |
10adac51 XDL |
589 | The checksum is calculated carefully so that |
590 | source code changes that doesn't affect the control flow graph | |
591 | won't change the checksum. | |
592 | This is to make the profile data useable across source code change. | |
593 | The downside of this is that the compiler may use potentially | |
594 | wrong profile data - that the source code change has non-trivial impact | |
595 | on the validity of profile data (e.g. the reversed condition) | |
596 | but the compiler won't detect the change and use the wrong profile data. */ | |
597 | ||
598 | unsigned | |
a96bf0d3 | 599 | coverage_compute_cfg_checksum (struct function *fn) |
10adac51 XDL |
600 | { |
601 | basic_block bb; | |
a96bf0d3 | 602 | unsigned chksum = n_basic_blocks_for_fn (fn); |
10adac51 | 603 | |
a96bf0d3 | 604 | FOR_EACH_BB_FN (bb, fn) |
10adac51 XDL |
605 | { |
606 | edge e; | |
607 | edge_iterator ei; | |
608 | chksum = crc32_byte (chksum, bb->index); | |
609 | FOR_EACH_EDGE (e, ei, bb->succs) | |
610 | { | |
611 | chksum = crc32_byte (chksum, e->dest->index); | |
612 | } | |
613 | } | |
614 | ||
615 | return chksum; | |
616 | } | |
ca29da43 | 617 | \f |
efbb59b2 | 618 | /* Begin output to the notes file for the current function. |
b724567e | 619 | Writes the function header. Returns nonzero if data should be output. */ |
ca29da43 NS |
620 | |
621 | int | |
b724567e | 622 | coverage_begin_function (unsigned lineno_checksum, unsigned cfg_checksum) |
ca29da43 | 623 | { |
2f908293 SP |
624 | /* We don't need to output .gcno file unless we're under -ftest-coverage |
625 | (e.g. -fprofile-arcs/generate/use don't need .gcno to work). */ | |
b724567e | 626 | if (no_coverage || !bbg_file_name) |
6d70e6be | 627 | return 0; |
159b3be1 | 628 | |
8bf728ae ML |
629 | expanded_location startloc |
630 | = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); | |
10adac51 | 631 | |
b724567e | 632 | /* Announce function */ |
8bf728ae | 633 | unsigned long offset = gcov_write_tag (GCOV_TAG_FUNCTION); |
028d4092 | 634 | if (param_profile_func_internal_id) |
2243ba51 XDL |
635 | gcov_write_unsigned (current_function_funcdef_no + 1); |
636 | else | |
637 | { | |
638 | gcc_assert (coverage_node_map_initialized_p ()); | |
639 | gcov_write_unsigned ( | |
640 | cgraph_node::get (current_function_decl)->profile_id); | |
641 | } | |
642 | ||
b724567e NS |
643 | gcov_write_unsigned (lineno_checksum); |
644 | gcov_write_unsigned (cfg_checksum); | |
645 | gcov_write_string (IDENTIFIER_POINTER | |
646 | (DECL_ASSEMBLER_NAME (current_function_decl))); | |
80dde427 | 647 | gcov_write_unsigned (DECL_ARTIFICIAL (current_function_decl) |
f2db4602 | 648 | && !DECL_FUNCTION_VERSIONED (current_function_decl) |
cb50701e | 649 | && !DECL_LAMBDA_FUNCTION_P (current_function_decl)); |
cde87638 | 650 | gcov_write_filename (remap_profile_filename (startloc.file)); |
8bf728ae ML |
651 | gcov_write_unsigned (startloc.line); |
652 | gcov_write_unsigned (startloc.column); | |
136ca74e ML |
653 | |
654 | expanded_location endloc = expand_location (cfun->function_end_locus); | |
655 | ||
656 | /* Function can start in a single file and end in another one. */ | |
8bf728ae ML |
657 | int end_line |
658 | = endloc.file == startloc.file ? endloc.line : startloc.line; | |
659 | int end_column | |
660 | = endloc.file == startloc.file ? endloc.column: startloc.column; | |
661 | ||
662 | if (startloc.line > end_line) | |
663 | { | |
664 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
665 | OPT_Wcoverage_invalid_line_number, | |
666 | "function starts on a higher line number than it ends"); | |
667 | end_line = startloc.line; | |
668 | end_column = startloc.column; | |
669 | } | |
670 | ||
390e529e | 671 | gcov_write_unsigned (end_line); |
b8154717 | 672 | gcov_write_unsigned (end_column); |
b724567e | 673 | gcov_write_length (offset); |
ca29da43 | 674 | |
ca29da43 NS |
675 | return !gcov_is_error (); |
676 | } | |
677 | ||
678 | /* Finish coverage data for the current function. Verify no output | |
679 | error has occurred. Save function coverage counts. */ | |
680 | ||
681 | void | |
10adac51 | 682 | coverage_end_function (unsigned lineno_checksum, unsigned cfg_checksum) |
ca29da43 NS |
683 | { |
684 | unsigned i; | |
159b3be1 | 685 | |
b724567e | 686 | if (bbg_file_name && gcov_is_error ()) |
159b3be1 | 687 | { |
d4ee4d25 | 688 | warning (0, "error writing %qs", bbg_file_name); |
b724567e NS |
689 | unlink (bbg_file_name); |
690 | bbg_file_name = NULL; | |
ca29da43 | 691 | } |
cdb23767 | 692 | |
2ac69a0c | 693 | if (fn_ctr_mask) |
cdb23767 | 694 | { |
2ac69a0c NS |
695 | struct coverage_data *item = 0; |
696 | ||
7e044261 | 697 | item = ggc_alloc<coverage_data> (); |
2243ba51 | 698 | |
028d4092 | 699 | if (param_profile_func_internal_id) |
7e044261 JH |
700 | item->ident = current_function_funcdef_no + 1; |
701 | else | |
702 | { | |
703 | gcc_assert (coverage_node_map_initialized_p ()); | |
704 | item->ident = cgraph_node::get (cfun->decl)->profile_id; | |
2ac69a0c | 705 | } |
10adac51 | 706 | |
7e044261 JH |
707 | item->lineno_checksum = lineno_checksum; |
708 | item->cfg_checksum = cfg_checksum; | |
709 | ||
710 | item->fn_decl = current_function_decl; | |
711 | item->next = 0; | |
712 | *functions_tail = item; | |
713 | functions_tail = &item->next; | |
714 | ||
cdb23767 NS |
715 | for (i = 0; i != GCOV_COUNTERS; i++) |
716 | { | |
5366b186 | 717 | tree var = fn_v_ctrs[i]; |
2ac69a0c NS |
718 | |
719 | if (item) | |
720 | item->ctr_vars[i] = var; | |
5366b186 NS |
721 | if (var) |
722 | { | |
723 | tree array_type = build_index_type (size_int (fn_n_ctrs[i] - 1)); | |
724 | array_type = build_array_type (get_gcov_type (), array_type); | |
725 | TREE_TYPE (var) = array_type; | |
726 | DECL_SIZE (var) = TYPE_SIZE (array_type); | |
727 | DECL_SIZE_UNIT (var) = TYPE_SIZE_UNIT (array_type); | |
9041d2e6 | 728 | varpool_node::finalize_decl (var); |
5366b186 | 729 | } |
2ac69a0c | 730 | |
5366b186 NS |
731 | fn_b_ctrs[i] = fn_n_ctrs[i] = 0; |
732 | fn_v_ctrs[i] = NULL_TREE; | |
cdb23767 NS |
733 | } |
734 | prg_ctr_mask |= fn_ctr_mask; | |
735 | fn_ctr_mask = 0; | |
736 | } | |
ca29da43 NS |
737 | } |
738 | ||
4ebcdc23 ML |
739 | /* Remove coverage file if opened. */ |
740 | ||
741 | void | |
742 | coverage_remove_note_file (void) | |
743 | { | |
744 | if (bbg_file_name) | |
745 | { | |
746 | gcov_close (); | |
747 | unlink (bbg_file_name); | |
748 | } | |
749 | } | |
750 | ||
5366b186 | 751 | /* Build a coverage variable of TYPE for function FN_DECL. If COUNTER |
0e485da0 | 752 | >= 0 it is a counter array, otherwise it is the function structure. */ |
ca29da43 | 753 | |
ca29da43 | 754 | static tree |
5366b186 NS |
755 | build_var (tree fn_decl, tree type, int counter) |
756 | { | |
757 | tree var = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, type); | |
9e66e106 JJ |
758 | const char *fn_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn_decl)); |
759 | char *buf; | |
760 | size_t fn_name_len, len; | |
761 | ||
762 | fn_name = targetm.strip_name_encoding (fn_name); | |
763 | fn_name_len = strlen (fn_name); | |
764 | buf = XALLOCAVEC (char, fn_name_len + 8 + sizeof (int) * 3); | |
5366b186 | 765 | |
5366b186 | 766 | if (counter < 0) |
9e66e106 | 767 | strcpy (buf, "__gcov__"); |
5366b186 | 768 | else |
9e66e106 JJ |
769 | sprintf (buf, "__gcov%u_", counter); |
770 | len = strlen (buf); | |
f8a1abf8 | 771 | buf[len - 1] = symbol_table::symbol_suffix_separator (); |
9e66e106 | 772 | memcpy (buf + len, fn_name, fn_name_len + 1); |
5366b186 | 773 | DECL_NAME (var) = get_identifier (buf); |
89b0c303 NS |
774 | TREE_STATIC (var) = 1; |
775 | TREE_ADDRESSABLE (var) = 1; | |
400a4f6c | 776 | DECL_NONALIASED (var) = 1; |
fe37c7af | 777 | SET_DECL_ALIGN (var, TYPE_ALIGN (type)); |
5366b186 NS |
778 | |
779 | return var; | |
780 | } | |
781 | ||
782 | /* Creates the gcov_fn_info RECORD_TYPE. */ | |
783 | ||
784 | static void | |
785 | build_fn_info_type (tree type, unsigned counters, tree gcov_info_type) | |
ca29da43 | 786 | { |
5366b186 | 787 | tree ctr_info = lang_hooks.types.make_type (RECORD_TYPE); |
ca29da43 | 788 | tree field, fields; |
cdb23767 | 789 | tree array_type; |
159b3be1 | 790 | |
5366b186 NS |
791 | gcc_assert (counters); |
792 | ||
793 | /* ctr_info::num */ | |
794 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
795 | get_gcov_unsigned_t ()); | |
796 | fields = field; | |
797 | ||
798 | /* ctr_info::values */ | |
799 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
800 | build_pointer_type (get_gcov_type ())); | |
801 | DECL_CHAIN (field) = fields; | |
802 | fields = field; | |
803 | ||
804 | finish_builtin_struct (ctr_info, "__gcov_ctr_info", fields, NULL_TREE); | |
805 | ||
806 | /* key */ | |
807 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
808 | build_pointer_type (build_qualified_type | |
809 | (gcov_info_type, TYPE_QUAL_CONST))); | |
810 | fields = field; | |
811 | ||
796621e8 | 812 | /* ident */ |
5366b186 NS |
813 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
814 | get_gcov_unsigned_t ()); | |
815 | DECL_CHAIN (field) = fields; | |
816 | fields = field; | |
817 | ||
10adac51 | 818 | /* lineno_checksum */ |
5366b186 NS |
819 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
820 | get_gcov_unsigned_t ()); | |
910ad8de | 821 | DECL_CHAIN (field) = fields; |
ca29da43 NS |
822 | fields = field; |
823 | ||
10adac51 | 824 | /* cfg checksum */ |
5366b186 NS |
825 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
826 | get_gcov_unsigned_t ()); | |
10adac51 XDL |
827 | DECL_CHAIN (field) = fields; |
828 | fields = field; | |
829 | ||
f81b1a3d | 830 | array_type = build_index_type (size_int (counters - 1)); |
5366b186 | 831 | array_type = build_array_type (ctr_info, array_type); |
159b3be1 | 832 | |
ca29da43 | 833 | /* counters */ |
5366b186 | 834 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, array_type); |
910ad8de | 835 | DECL_CHAIN (field) = fields; |
ca29da43 NS |
836 | fields = field; |
837 | ||
cdb23767 | 838 | finish_builtin_struct (type, "__gcov_fn_info", fields, NULL_TREE); |
ca29da43 NS |
839 | } |
840 | ||
b724567e NS |
841 | /* Returns a CONSTRUCTOR for a gcov_fn_info. DATA is |
842 | the coverage data for the function and TYPE is the gcov_fn_info | |
843 | RECORD_TYPE. KEY is the object file key. */ | |
cdb23767 | 844 | |
ca29da43 | 845 | static tree |
b724567e | 846 | build_fn_info (const struct coverage_data *data, tree type, tree key) |
ca29da43 | 847 | { |
cdb23767 | 848 | tree fields = TYPE_FIELDS (type); |
5366b186 | 849 | tree ctr_type; |
cdb23767 | 850 | unsigned ix; |
9771b263 DN |
851 | vec<constructor_elt, va_gc> *v1 = NULL; |
852 | vec<constructor_elt, va_gc> *v2 = NULL; | |
159b3be1 | 853 | |
5366b186 NS |
854 | /* key */ |
855 | CONSTRUCTOR_APPEND_ELT (v1, fields, | |
856 | build1 (ADDR_EXPR, TREE_TYPE (fields), key)); | |
857 | fields = DECL_CHAIN (fields); | |
858 | ||
796621e8 | 859 | /* ident */ |
f9b36bb3 KH |
860 | CONSTRUCTOR_APPEND_ELT (v1, fields, |
861 | build_int_cstu (get_gcov_unsigned_t (), | |
b724567e | 862 | data->ident)); |
910ad8de | 863 | fields = DECL_CHAIN (fields); |
159b3be1 | 864 | |
10adac51 XDL |
865 | /* lineno_checksum */ |
866 | CONSTRUCTOR_APPEND_ELT (v1, fields, | |
867 | build_int_cstu (get_gcov_unsigned_t (), | |
b724567e | 868 | data->lineno_checksum)); |
10adac51 XDL |
869 | fields = DECL_CHAIN (fields); |
870 | ||
871 | /* cfg_checksum */ | |
f9b36bb3 KH |
872 | CONSTRUCTOR_APPEND_ELT (v1, fields, |
873 | build_int_cstu (get_gcov_unsigned_t (), | |
b724567e | 874 | data->cfg_checksum)); |
910ad8de | 875 | fields = DECL_CHAIN (fields); |
159b3be1 | 876 | |
ca29da43 | 877 | /* counters */ |
5366b186 | 878 | ctr_type = TREE_TYPE (TREE_TYPE (fields)); |
cdb23767 NS |
879 | for (ix = 0; ix != GCOV_COUNTERS; ix++) |
880 | if (prg_ctr_mask & (1 << ix)) | |
5366b186 | 881 | { |
9771b263 | 882 | vec<constructor_elt, va_gc> *ctr = NULL; |
b724567e | 883 | tree var = data->ctr_vars[ix]; |
5366b186 NS |
884 | unsigned count = 0; |
885 | ||
886 | if (var) | |
887 | count | |
9439e9a1 | 888 | = tree_to_shwi (TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (var)))) |
5366b186 NS |
889 | + 1; |
890 | ||
891 | CONSTRUCTOR_APPEND_ELT (ctr, TYPE_FIELDS (ctr_type), | |
892 | build_int_cstu (get_gcov_unsigned_t (), | |
893 | count)); | |
894 | ||
895 | if (var) | |
896 | CONSTRUCTOR_APPEND_ELT (ctr, DECL_CHAIN (TYPE_FIELDS (ctr_type)), | |
897 | build_fold_addr_expr (var)); | |
898 | ||
899 | CONSTRUCTOR_APPEND_ELT (v2, NULL, build_constructor (ctr_type, ctr)); | |
900 | } | |
901 | ||
f9b36bb3 KH |
902 | CONSTRUCTOR_APPEND_ELT (v1, fields, |
903 | build_constructor (TREE_TYPE (fields), v2)); | |
159b3be1 | 904 | |
f9b36bb3 | 905 | return build_constructor (type, v1); |
ca29da43 NS |
906 | } |
907 | ||
b724567e NS |
908 | /* Create gcov_info struct. TYPE is the incomplete RECORD_TYPE to be |
909 | completed, and FN_INFO_PTR_TYPE is a pointer to the function info type. */ | |
cdb23767 | 910 | |
5366b186 | 911 | static void |
b724567e | 912 | build_info_type (tree type, tree fn_info_ptr_type) |
ca29da43 | 913 | { |
cdb23767 | 914 | tree field, fields = NULL_TREE; |
b724567e | 915 | tree merge_fn_type; |
9b514d25 | 916 | |
5366b186 NS |
917 | /* Version ident */ |
918 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
919 | get_gcov_unsigned_t ()); | |
910ad8de | 920 | DECL_CHAIN (field) = fields; |
ca29da43 NS |
921 | fields = field; |
922 | ||
5366b186 NS |
923 | /* next pointer */ |
924 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
925 | build_pointer_type (build_qualified_type | |
926 | (type, TYPE_QUAL_CONST))); | |
910ad8de | 927 | DECL_CHAIN (field) = fields; |
ca29da43 NS |
928 | fields = field; |
929 | ||
5366b186 NS |
930 | /* stamp */ |
931 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
932 | get_gcov_unsigned_t ()); | |
910ad8de | 933 | DECL_CHAIN (field) = fields; |
09780dfb ZD |
934 | fields = field; |
935 | ||
72e0c742 ML |
936 | /* Checksum. */ |
937 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
938 | get_gcov_unsigned_t ()); | |
939 | DECL_CHAIN (field) = fields; | |
940 | fields = field; | |
941 | ||
5366b186 NS |
942 | /* Filename */ |
943 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
944 | build_pointer_type (build_qualified_type | |
945 | (char_type_node, TYPE_QUAL_CONST))); | |
946 | DECL_CHAIN (field) = fields; | |
947 | fields = field; | |
ca29da43 | 948 | |
5366b186 NS |
949 | /* merge fn array */ |
950 | merge_fn_type | |
951 | = build_function_type_list (void_type_node, | |
952 | build_pointer_type (get_gcov_type ()), | |
953 | get_gcov_unsigned_t (), NULL_TREE); | |
954 | merge_fn_type | |
955 | = build_array_type (build_pointer_type (merge_fn_type), | |
956 | build_index_type (size_int (GCOV_COUNTERS - 1))); | |
957 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
958 | merge_fn_type); | |
959 | DECL_CHAIN (field) = fields; | |
960 | fields = field; | |
961 | ||
962 | /* n_functions */ | |
963 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, | |
964 | get_gcov_unsigned_t ()); | |
965 | DECL_CHAIN (field) = fields; | |
966 | fields = field; | |
967 | ||
b724567e NS |
968 | /* function_info pointer pointer */ |
969 | fn_info_ptr_type = build_pointer_type | |
970 | (build_qualified_type (fn_info_ptr_type, TYPE_QUAL_CONST)); | |
5366b186 | 971 | field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
b724567e | 972 | fn_info_ptr_type); |
5366b186 NS |
973 | DECL_CHAIN (field) = fields; |
974 | fields = field; | |
09780dfb | 975 | |
5366b186 | 976 | finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE); |
ca29da43 NS |
977 | } |
978 | ||
b724567e NS |
979 | /* Returns a CONSTRUCTOR for the gcov_info object. INFO_TYPE is the |
980 | gcov_info structure type, FN_ARY is the array of pointers to | |
981 | function info objects. */ | |
cdb23767 | 982 | |
ca29da43 | 983 | static tree |
72e0c742 | 984 | build_info (tree info_type, tree fn_ary, unsigned object_checksum) |
ca29da43 | 985 | { |
5366b186 | 986 | tree info_fields = TYPE_FIELDS (info_type); |
b724567e | 987 | tree merge_fn_type, n_funcs; |
5366b186 | 988 | unsigned ix; |
cdb23767 | 989 | tree filename_string; |
2f908293 | 990 | int da_file_name_len; |
9771b263 DN |
991 | vec<constructor_elt, va_gc> *v1 = NULL; |
992 | vec<constructor_elt, va_gc> *v2 = NULL; | |
159b3be1 | 993 | |
cdb23767 | 994 | /* Version ident */ |
5366b186 NS |
995 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
996 | build_int_cstu (TREE_TYPE (info_fields), | |
997 | GCOV_VERSION)); | |
998 | info_fields = DECL_CHAIN (info_fields); | |
159b3be1 | 999 | |
ca29da43 | 1000 | /* next -- NULL */ |
5366b186 NS |
1001 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, null_pointer_node); |
1002 | info_fields = DECL_CHAIN (info_fields); | |
72e0c742 | 1003 | |
dd486eb2 | 1004 | /* stamp */ |
5366b186 NS |
1005 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
1006 | build_int_cstu (TREE_TYPE (info_fields), | |
cb686b99 | 1007 | bbg_file_stamp)); |
5366b186 | 1008 | info_fields = DECL_CHAIN (info_fields); |
dd486eb2 | 1009 | |
72e0c742 ML |
1010 | /* Checksum. */ |
1011 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, | |
1012 | build_int_cstu (TREE_TYPE (info_fields), | |
1013 | object_checksum)); | |
1014 | info_fields = DECL_CHAIN (info_fields); | |
1015 | ||
ca29da43 | 1016 | /* Filename */ |
2f908293 SP |
1017 | da_file_name_len = strlen (da_file_name); |
1018 | filename_string = build_string (da_file_name_len + 1, da_file_name); | |
4a90aeeb | 1019 | TREE_TYPE (filename_string) = build_array_type |
f81b1a3d | 1020 | (char_type_node, build_index_type (size_int (da_file_name_len))); |
5366b186 NS |
1021 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
1022 | build1 (ADDR_EXPR, TREE_TYPE (info_fields), | |
1023 | filename_string)); | |
1024 | info_fields = DECL_CHAIN (info_fields); | |
159b3be1 | 1025 | |
5366b186 NS |
1026 | /* merge fn array -- NULL slots indicate unmeasured counters */ |
1027 | merge_fn_type = TREE_TYPE (TREE_TYPE (info_fields)); | |
1028 | for (ix = 0; ix != GCOV_COUNTERS; ix++) | |
ca29da43 | 1029 | { |
5366b186 | 1030 | tree ptr = null_pointer_node; |
159b3be1 | 1031 | |
5366b186 NS |
1032 | if ((1u << ix) & prg_ctr_mask) |
1033 | { | |
1034 | tree merge_fn = build_decl (BUILTINS_LOCATION, | |
1035 | FUNCTION_DECL, | |
1036 | get_identifier (ctr_merge_functions[ix]), | |
1037 | TREE_TYPE (merge_fn_type)); | |
1038 | DECL_EXTERNAL (merge_fn) = 1; | |
1039 | TREE_PUBLIC (merge_fn) = 1; | |
1040 | DECL_ARTIFICIAL (merge_fn) = 1; | |
1041 | TREE_NOTHROW (merge_fn) = 1; | |
1042 | /* Initialize assembler name so we can stream out. */ | |
1043 | DECL_ASSEMBLER_NAME (merge_fn); | |
1044 | ptr = build1 (ADDR_EXPR, merge_fn_type, merge_fn); | |
1045 | } | |
1046 | CONSTRUCTOR_APPEND_ELT (v2, NULL, ptr); | |
ca29da43 | 1047 | } |
5366b186 NS |
1048 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
1049 | build_constructor (TREE_TYPE (info_fields), v2)); | |
1050 | info_fields = DECL_CHAIN (info_fields); | |
1051 | ||
1052 | /* n_functions */ | |
b724567e NS |
1053 | n_funcs = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (fn_ary))); |
1054 | n_funcs = fold_build2 (PLUS_EXPR, TREE_TYPE (info_fields), | |
1055 | n_funcs, size_one_node); | |
1056 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, n_funcs); | |
5366b186 | 1057 | info_fields = DECL_CHAIN (info_fields); |
5366b186 | 1058 | |
b724567e | 1059 | /* functions */ |
5366b186 | 1060 | CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
b724567e NS |
1061 | build1 (ADDR_EXPR, TREE_TYPE (info_fields), fn_ary)); |
1062 | info_fields = DECL_CHAIN (info_fields); | |
1063 | ||
1064 | gcc_assert (!info_fields); | |
5366b186 | 1065 | return build_constructor (info_type, v1); |
ca29da43 NS |
1066 | } |
1067 | ||
d6d7eee1 GW |
1068 | /* Generate the constructor function to call __gcov_init. */ |
1069 | ||
1070 | static void | |
1071 | build_init_ctor (tree gcov_info_type) | |
1072 | { | |
1073 | tree ctor, stmt, init_fn; | |
1074 | ||
1075 | /* Build a decl for __gcov_init. */ | |
1076 | init_fn = build_pointer_type (gcov_info_type); | |
1077 | init_fn = build_function_type_list (void_type_node, init_fn, NULL); | |
1078 | init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, | |
1079 | get_identifier ("__gcov_init"), init_fn); | |
1080 | TREE_PUBLIC (init_fn) = 1; | |
1081 | DECL_EXTERNAL (init_fn) = 1; | |
1082 | DECL_ASSEMBLER_NAME (init_fn); | |
1083 | ||
1084 | /* Generate a call to __gcov_init(&gcov_info). */ | |
1085 | ctor = NULL; | |
1086 | stmt = build_fold_addr_expr (gcov_info_var); | |
1087 | stmt = build_call_expr (init_fn, 1, stmt); | |
1088 | append_to_statement_list (stmt, &ctor); | |
1089 | ||
78681a7b ML |
1090 | /* Generate a constructor to run it. */ |
1091 | int priority = SUPPORTS_INIT_PRIORITY | |
1092 | ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; | |
1093 | cgraph_build_static_cdtor ('I', ctor, priority); | |
8c9434c2 ML |
1094 | } |
1095 | ||
1096 | /* Generate the destructor function to call __gcov_exit. */ | |
1097 | ||
1098 | static void | |
1099 | build_gcov_exit_decl (void) | |
1100 | { | |
16e81d51 | 1101 | tree init_fn = build_function_type_list (void_type_node, NULL); |
8c9434c2 ML |
1102 | init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, |
1103 | get_identifier ("__gcov_exit"), init_fn); | |
1104 | TREE_PUBLIC (init_fn) = 1; | |
1105 | DECL_EXTERNAL (init_fn) = 1; | |
1106 | DECL_ASSEMBLER_NAME (init_fn); | |
1107 | ||
1108 | /* Generate a call to __gcov_exit (). */ | |
1109 | tree dtor = NULL; | |
1110 | tree stmt = build_call_expr (init_fn, 0); | |
1111 | append_to_statement_list (stmt, &dtor); | |
1112 | ||
78681a7b ML |
1113 | /* Generate a destructor to run it. */ |
1114 | int priority = SUPPORTS_INIT_PRIORITY | |
1115 | ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; | |
1116 | ||
1117 | cgraph_build_static_cdtor ('D', dtor, priority); | |
d6d7eee1 GW |
1118 | } |
1119 | ||
27f7fb79 SH |
1120 | /* Generate the pointer to the gcov_info_var in a dedicated section. */ |
1121 | ||
1122 | static void | |
1123 | build_gcov_info_var_registration (tree gcov_info_type) | |
1124 | { | |
1125 | tree var = build_decl (BUILTINS_LOCATION, | |
1126 | VAR_DECL, NULL_TREE, | |
1127 | build_pointer_type (gcov_info_type)); | |
1128 | TREE_STATIC (var) = 1; | |
1129 | TREE_READONLY (var) = 1; | |
1130 | char name_buf[32]; | |
1131 | ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 2); | |
1132 | DECL_NAME (var) = get_identifier (name_buf); | |
1133 | get_section (profile_info_section, SECTION_UNNAMED, NULL); | |
1134 | set_decl_section_name (var, profile_info_section); | |
f8884b9c | 1135 | mark_decl_referenced (var); |
27f7fb79 SH |
1136 | DECL_INITIAL (var) = build_fold_addr_expr (gcov_info_var); |
1137 | varpool_node::finalize_decl (var); | |
1138 | } | |
1139 | ||
b724567e NS |
1140 | /* Create the gcov_info types and object. Generate the constructor |
1141 | function to call __gcov_init. Does not generate the initializer | |
1142 | for the object. Returns TRUE if coverage data is being emitted. */ | |
ca29da43 | 1143 | |
b724567e NS |
1144 | static bool |
1145 | coverage_obj_init (void) | |
ca29da43 | 1146 | { |
d6d7eee1 | 1147 | tree gcov_info_type; |
b724567e | 1148 | unsigned n_counters = 0; |
5366b186 | 1149 | unsigned ix; |
b724567e NS |
1150 | struct coverage_data *fn; |
1151 | struct coverage_data **fn_prev; | |
c9b9aa64 | 1152 | char name_buf[32]; |
ca29da43 | 1153 | |
6d70e6be | 1154 | no_coverage = 1; /* Disable any further coverage. */ |
159b3be1 | 1155 | |
cdb23767 | 1156 | if (!prg_ctr_mask) |
b724567e | 1157 | return false; |
159b3be1 | 1158 | |
3dafb85c ML |
1159 | if (symtab->dump_file) |
1160 | fprintf (symtab->dump_file, "Using data file %s\n", da_file_name); | |
ca29da43 | 1161 | |
b724567e | 1162 | /* Prune functions. */ |
5366b186 NS |
1163 | for (fn_prev = &functions_head; (fn = *fn_prev);) |
1164 | if (DECL_STRUCT_FUNCTION (fn->fn_decl)) | |
b724567e | 1165 | fn_prev = &fn->next; |
5366b186 NS |
1166 | else |
1167 | /* The function is not being emitted, remove from list. */ | |
1168 | *fn_prev = fn->next; | |
b724567e | 1169 | |
0f9fb22f JJ |
1170 | if (functions_head == NULL) |
1171 | return false; | |
1172 | ||
b724567e NS |
1173 | for (ix = 0; ix != GCOV_COUNTERS; ix++) |
1174 | if ((1u << ix) & prg_ctr_mask) | |
1175 | n_counters++; | |
5366b186 NS |
1176 | |
1177 | /* Build the info and fn_info types. These are mutually recursive. */ | |
1178 | gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); | |
b724567e | 1179 | gcov_fn_info_type = lang_hooks.types.make_type (RECORD_TYPE); |
dafb7b56 JH |
1180 | build_fn_info_type (gcov_fn_info_type, n_counters, gcov_info_type); |
1181 | gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); | |
b724567e NS |
1182 | gcov_fn_info_ptr_type = build_pointer_type |
1183 | (build_qualified_type (gcov_fn_info_type, TYPE_QUAL_CONST)); | |
b724567e | 1184 | build_info_type (gcov_info_type, gcov_fn_info_ptr_type); |
5366b186 NS |
1185 | |
1186 | /* Build the gcov info var, this is referred to in its own | |
1187 | initializer. */ | |
b724567e NS |
1188 | gcov_info_var = build_decl (BUILTINS_LOCATION, |
1189 | VAR_DECL, NULL_TREE, gcov_info_type); | |
1190 | TREE_STATIC (gcov_info_var) = 1; | |
c9b9aa64 | 1191 | ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 0); |
b724567e | 1192 | DECL_NAME (gcov_info_var) = get_identifier (name_buf); |
ca29da43 | 1193 | |
27f7fb79 SH |
1194 | if (profile_info_section) |
1195 | build_gcov_info_var_registration (gcov_info_type); | |
1196 | else | |
1197 | { | |
1198 | build_init_ctor (gcov_info_type); | |
1199 | build_gcov_exit_decl (); | |
1200 | } | |
b724567e NS |
1201 | |
1202 | return true; | |
ca29da43 | 1203 | } |
b724567e NS |
1204 | |
1205 | /* Generate the coverage function info for FN and DATA. Append a | |
1206 | pointer to that object to CTOR and return the appended CTOR. */ | |
1207 | ||
9771b263 DN |
1208 | static vec<constructor_elt, va_gc> * |
1209 | coverage_obj_fn (vec<constructor_elt, va_gc> *ctor, tree fn, | |
b724567e NS |
1210 | struct coverage_data const *data) |
1211 | { | |
1212 | tree init = build_fn_info (data, gcov_fn_info_type, gcov_info_var); | |
1213 | tree var = build_var (fn, gcov_fn_info_type, -1); | |
1214 | ||
1215 | DECL_INITIAL (var) = init; | |
9041d2e6 | 1216 | varpool_node::finalize_decl (var); |
b724567e NS |
1217 | |
1218 | CONSTRUCTOR_APPEND_ELT (ctor, NULL, | |
1219 | build1 (ADDR_EXPR, gcov_fn_info_ptr_type, var)); | |
1220 | return ctor; | |
1221 | } | |
1222 | ||
1223 | /* Finalize the coverage data. Generates the array of pointers to | |
1224 | function objects from CTOR. Generate the gcov_info initializer. */ | |
1225 | ||
1226 | static void | |
72e0c742 ML |
1227 | coverage_obj_finish (vec<constructor_elt, va_gc> *ctor, |
1228 | unsigned object_checksum) | |
b724567e | 1229 | { |
9771b263 | 1230 | unsigned n_functions = vec_safe_length (ctor); |
b724567e NS |
1231 | tree fn_info_ary_type = build_array_type |
1232 | (build_qualified_type (gcov_fn_info_ptr_type, TYPE_QUAL_CONST), | |
1233 | build_index_type (size_int (n_functions - 1))); | |
1234 | tree fn_info_ary = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, | |
1235 | fn_info_ary_type); | |
1236 | char name_buf[32]; | |
1237 | ||
1238 | TREE_STATIC (fn_info_ary) = 1; | |
1239 | ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 1); | |
1240 | DECL_NAME (fn_info_ary) = get_identifier (name_buf); | |
1241 | DECL_INITIAL (fn_info_ary) = build_constructor (fn_info_ary_type, ctor); | |
9041d2e6 | 1242 | varpool_node::finalize_decl (fn_info_ary); |
b724567e NS |
1243 | |
1244 | DECL_INITIAL (gcov_info_var) | |
72e0c742 | 1245 | = build_info (TREE_TYPE (gcov_info_var), fn_info_ary, object_checksum); |
9041d2e6 | 1246 | varpool_node::finalize_decl (gcov_info_var); |
b724567e NS |
1247 | } |
1248 | ||
ca29da43 | 1249 | /* Perform file-level initialization. Read in data file, generate name |
efbb59b2 | 1250 | of notes file. */ |
ca29da43 NS |
1251 | |
1252 | void | |
159b3be1 | 1253 | coverage_init (const char *filename) |
ca29da43 | 1254 | { |
f8dcbea5 ML |
1255 | const char *original_filename = filename; |
1256 | int original_len = strlen (original_filename); | |
e9f799d2 ML |
1257 | #if HAVE_DOS_BASED_FILE_SYSTEM |
1258 | const char *separator = "\\"; | |
1259 | #else | |
1260 | const char *separator = "/"; | |
1261 | #endif | |
ca29da43 | 1262 | int len = strlen (filename); |
b724567e | 1263 | int prefix_len = 0; |
b8698a0f | 1264 | |
103ff0d6 TJ |
1265 | /* Since coverage_init is invoked very early, before the pass |
1266 | manager, we need to set up the dumping explicitly. This is | |
1267 | similar to the handling in finish_optimization_passes. */ | |
47e0da37 DM |
1268 | int profile_pass_num = |
1269 | g->get_passes ()->get_pass_profile ()->static_pass_number; | |
1270 | g->get_dumps ()->dump_start (profile_pass_num, NULL); | |
103ff0d6 | 1271 | |
1f2bb38a ML |
1272 | if (!IS_ABSOLUTE_PATH (filename)) |
1273 | { | |
1274 | /* When a profile_data_prefix is provided, then mangle full path | |
1275 | of filename in order to prevent file path clashing. */ | |
1276 | if (profile_data_prefix) | |
1277 | { | |
1f2bb38a | 1278 | filename = concat (getpwd (), separator, filename, NULL); |
44b32683 JH |
1279 | if (profile_prefix_path) |
1280 | { | |
6ba3079d | 1281 | if (startswith (filename, profile_prefix_path)) |
44b32683 JH |
1282 | { |
1283 | filename += strlen (profile_prefix_path); | |
1284 | while (*filename == *separator) | |
1285 | filename++; | |
1286 | } | |
1287 | else | |
1288 | warning (0, "filename %qs does not start with profile " | |
1289 | "prefix %qs", filename, profile_prefix_path); | |
1290 | } | |
1f2bb38a ML |
1291 | filename = mangle_path (filename); |
1292 | len = strlen (filename); | |
1293 | } | |
1294 | else | |
1295 | profile_data_prefix = getpwd (); | |
1296 | } | |
2f908293 | 1297 | |
b724567e NS |
1298 | if (profile_data_prefix) |
1299 | prefix_len = strlen (profile_data_prefix); | |
ca29da43 | 1300 | |
796621e8 | 1301 | /* Name of da file. */ |
b8698a0f | 1302 | da_file_name = XNEWVEC (char, len + strlen (GCOV_DATA_SUFFIX) |
b724567e | 1303 | + prefix_len + 2); |
2f908293 SP |
1304 | |
1305 | if (profile_data_prefix) | |
1306 | { | |
b724567e | 1307 | memcpy (da_file_name, profile_data_prefix, prefix_len); |
e9f799d2 | 1308 | da_file_name[prefix_len++] = *separator; |
2f908293 | 1309 | } |
b724567e NS |
1310 | memcpy (da_file_name + prefix_len, filename, len); |
1311 | strcpy (da_file_name + prefix_len + len, GCOV_DATA_SUFFIX); | |
159b3be1 | 1312 | |
cb686b99 | 1313 | bbg_file_stamp = local_tick; |
be3c16c4 DC |
1314 | if (flag_auto_profile) |
1315 | read_autofdo_file (); | |
1316 | else if (flag_branch_probabilities) | |
cb686b99 NS |
1317 | read_counts_file (); |
1318 | ||
796621e8 | 1319 | /* Name of bbg file. */ |
b724567e NS |
1320 | if (flag_test_coverage && !flag_compare_debug) |
1321 | { | |
8e37c995 ML |
1322 | if (profile_note_location) |
1323 | bbg_file_name = xstrdup (profile_note_location); | |
1324 | else | |
1325 | { | |
f8dcbea5 ML |
1326 | bbg_file_name = XNEWVEC (char, original_len + strlen (GCOV_NOTE_SUFFIX) + 1); |
1327 | memcpy (bbg_file_name, original_filename, original_len); | |
1328 | strcpy (bbg_file_name + original_len, GCOV_NOTE_SUFFIX); | |
8e37c995 | 1329 | } |
b724567e NS |
1330 | |
1331 | if (!gcov_open (bbg_file_name, -1)) | |
1332 | { | |
1333 | error ("cannot open %s", bbg_file_name); | |
1334 | bbg_file_name = NULL; | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | gcov_write_unsigned (GCOV_NOTE_MAGIC); | |
1339 | gcov_write_unsigned (GCOV_VERSION); | |
cb686b99 | 1340 | gcov_write_unsigned (bbg_file_stamp); |
72e0c742 ML |
1341 | /* Use an arbitrary checksum */ |
1342 | gcov_write_unsigned (0); | |
c74bd3fb | 1343 | gcov_write_string (getpwd ()); |
93814e2d ML |
1344 | |
1345 | /* Do not support has_unexecuted_blocks for Ada. */ | |
1346 | gcov_write_unsigned (strcmp (lang_hooks.name, "GNU Ada") != 0); | |
b724567e NS |
1347 | } |
1348 | } | |
103ff0d6 | 1349 | |
47e0da37 | 1350 | g->get_dumps ()->dump_finish (profile_pass_num); |
ca29da43 NS |
1351 | } |
1352 | ||
efbb59b2 | 1353 | /* Performs file-level cleanup. Close notes file, generate coverage |
ca29da43 NS |
1354 | variables and constructor. */ |
1355 | ||
1356 | void | |
159b3be1 | 1357 | coverage_finish (void) |
ca29da43 | 1358 | { |
b724567e NS |
1359 | if (bbg_file_name && gcov_close ()) |
1360 | unlink (bbg_file_name); | |
cb686b99 NS |
1361 | |
1362 | if (!flag_branch_probabilities && flag_test_coverage | |
1363 | && (!local_tick || local_tick == (unsigned)-1)) | |
1364 | /* Only remove the da file, if we're emitting coverage code and | |
1365 | cannot uniquely stamp it. If we can stamp it, libgcov will DTRT. */ | |
b724567e NS |
1366 | unlink (da_file_name); |
1367 | ||
72e0c742 ML |
1368 | /* Global GCDA checksum that aggregates all functions. */ |
1369 | unsigned object_checksum = 0; | |
1370 | ||
b724567e | 1371 | if (coverage_obj_init ()) |
ca29da43 | 1372 | { |
9771b263 | 1373 | vec<constructor_elt, va_gc> *fn_ctor = NULL; |
b724567e NS |
1374 | struct coverage_data *fn; |
1375 | ||
1376 | for (fn = functions_head; fn; fn = fn->next) | |
72e0c742 ML |
1377 | { |
1378 | fn_ctor = coverage_obj_fn (fn_ctor, fn->fn_decl, fn); | |
1379 | ||
1380 | object_checksum = crc32_unsigned (object_checksum, fn->ident); | |
1381 | object_checksum = crc32_unsigned (object_checksum, | |
1382 | fn->lineno_checksum); | |
1383 | object_checksum = crc32_unsigned (object_checksum, fn->cfg_checksum); | |
1384 | } | |
1385 | coverage_obj_finish (fn_ctor, object_checksum); | |
ca29da43 | 1386 | } |
782f0db2 DM |
1387 | |
1388 | XDELETEVEC (da_file_name); | |
1389 | da_file_name = NULL; | |
ca29da43 NS |
1390 | } |
1391 | ||
ca29da43 | 1392 | #include "gt-coverage.h" |