1 /* Read and write coverage files, and associated functionality. 2 Copyright (C) 1990-2020 Free Software Foundation, Inc. 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 12 Software Foundation; either version 3, or (at your option) any later 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 21 along with GCC; see the file COPYING3. If not see 22 <http://www.gnu.org/licenses/>. */ 23 24 25 #define GCOV_LINKAGE 26 27 #include "config.h" 28 #include "system.h" 29 #include "coretypes.h" 30 #include "backend.h" 31 #include "target.h" 32 #include "rtl.h" 33 #include "tree.h" 34 #include "tree-pass.h" 35 #include "memmodel.h" 36 #include "tm_p.h" 37 #include "stringpool.h" 38 #include "cgraph.h" 39 #include "coverage.h" 40 #include "diagnostic-core.h" 41 #include "fold-const.h" 42 #include "stor-layout.h" 43 #include "output.h" 44 #include "toplev.h" 45 #include "langhooks.h" 46 #include "tree-iterator.h" 47 #include "context.h" 48 #include "pass_manager.h" 49 #include "intl.h" 50 #include "auto-profile.h" 51 #include "profile.h" 52 #include "diagnostic.h" 53 54 #include "gcov-io.c" 55 56 struct GTY((chain_next ("%h.next"))) coverage_data 57 { 58 struct coverage_data *next; /* next function */ 59 unsigned ident; /* function ident */ 60 unsigned lineno_checksum; /* function lineno checksum */ 61 unsigned cfg_checksum; /* function cfg checksum */ 62 tree fn_decl; /* the function decl */ 63 tree ctr_vars[GCOV_COUNTERS]; /* counter variables. */ 64 }; 65 66 /* Counts information for a function. */ 67 struct counts_entry : pointer_hash <counts_entry> 68 { 69 /* We hash by */ 70 unsigned ident; 71 unsigned ctr; 72 73 /* Store */ 74 unsigned lineno_checksum; 75 unsigned cfg_checksum; 76 gcov_type *counts; 77 unsigned n_counts; 78 79 /* hash_table support. */ 80 static inline hashval_t hash (const counts_entry *); 81 static int equal (const counts_entry *, const counts_entry *); 82 static void remove (counts_entry *); 83 }; 84 85 static GTY(()) struct coverage_data *functions_head = 0; 86 static struct coverage_data **functions_tail = &functions_head; 87 static unsigned no_coverage = 0; 88 89 /* Cumulative counter information for whole program. */ 90 static unsigned prg_ctr_mask; /* Mask of counter types generated. */ 91 92 /* Counter information for current function. */ 93 static unsigned fn_ctr_mask; /* Mask of counters used. */ 94 static GTY(()) tree fn_v_ctrs[GCOV_COUNTERS]; /* counter variables. */ 95 static unsigned fn_n_ctrs[GCOV_COUNTERS]; /* Counters allocated. */ 96 static unsigned fn_b_ctrs[GCOV_COUNTERS]; /* Allocation base. */ 97 98 /* Coverage info VAR_DECL and function info type nodes. */ 99 static GTY(()) tree gcov_info_var; 100 static GTY(()) tree gcov_fn_info_type; 101 static GTY(()) tree gcov_fn_info_ptr_type; 102 103 /* Name of the notes (gcno) output file. The "bbg" prefix is for 104 historical reasons, when the notes file contained only the 105 basic block graph notes. 106 If this is NULL we're not writing to the notes file. */ 107 static char *bbg_file_name; 108 109 /* File stamp for notes file. */ 110 static unsigned bbg_file_stamp; 111 112 /* Name of the count data (gcda) file. */ 113 static char *da_file_name; 114 115 /* The names of merge functions for counters. */ 116 #define STR(str) #str 117 #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) STR(__gcov_merge ## FN_TYPE), 118 static const char *const ctr_merge_functions[GCOV_COUNTERS] = { 119 #include "gcov-counter.def" 120 }; 121 #undef DEF_GCOV_COUNTER 122 #undef STR 123 124 #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) NAME, 125 static const char *const ctr_names[GCOV_COUNTERS] = { 126 #include "gcov-counter.def" 127 }; 128 #undef DEF_GCOV_COUNTER 129 130 /* Forward declarations. */ 131 static void read_counts_file (void); 132 static tree build_var (tree, tree, int); 133 static void build_fn_info_type (tree, unsigned, tree); 134 static void build_info_type (tree, tree); 135 static tree build_fn_info (const struct coverage_data *, tree, tree); 136 static tree build_info (tree, tree); 137 static bool coverage_obj_init (void); 138 static vec<constructor_elt, va_gc> *coverage_obj_fn 139 (vec<constructor_elt, va_gc> *, tree, struct coverage_data const *); 140 static void coverage_obj_finish (vec<constructor_elt, va_gc> *); 141 142 /* Return the type node for gcov_type. */ 143 144 tree 145 get_gcov_type (void) 146 { 147 scalar_int_mode mode 148 = smallest_int_mode_for_size (LONG_LONG_TYPE_SIZE > 32 ? 64 : 32); 149 return lang_hooks.types.type_for_mode (mode, false); 150 } 151 152 /* Return the type node for gcov_unsigned_t. */ 153 154 static tree 155 get_gcov_unsigned_t (void) 156 { 157 scalar_int_mode mode = smallest_int_mode_for_size (32); 158 return lang_hooks.types.type_for_mode (mode, true); 159 } 160 161 inline hashval_t 162 counts_entry::hash (const counts_entry *entry) 163 { 164 return entry->ident * GCOV_COUNTERS + entry->ctr; 165 } 166 167 inline int 168 counts_entry::equal (const counts_entry *entry1, const counts_entry *entry2) 169 { 170 return entry1->ident == entry2->ident && entry1->ctr == entry2->ctr; 171 } 172 173 inline void 174 counts_entry::remove (counts_entry *entry) 175 { 176 free (entry->counts); 177 free (entry); 178 } 179 180 /* Hash table of count data. */ 181 static hash_table<counts_entry> *counts_hash; 182 183 /* Read in the counts file, if available. */ 184 185 static void 186 read_counts_file (void) 187 { 188 gcov_unsigned_t fn_ident = 0; 189 gcov_unsigned_t tag; 190 int is_error = 0; 191 unsigned lineno_checksum = 0; 192 unsigned cfg_checksum = 0; 193 194 if (!gcov_open (da_file_name, 1)) 195 return; 196 197 if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC)) 198 { 199 warning (0, "%qs is not a gcov data file", da_file_name); 200 gcov_close (); 201 return; 202 } 203 else if ((tag = gcov_read_unsigned ()) != GCOV_VERSION) 204 { 205 char v[4], e[4]; 206 207 GCOV_UNSIGNED2STRING (v, tag); 208 GCOV_UNSIGNED2STRING (e, GCOV_VERSION); 209 210 warning (0, "%qs is version %q.*s, expected version %q.*s", 211 da_file_name, 4, v, 4, e); 212 gcov_close (); 213 return; 214 } 215 216 /* Read the stamp, used for creating a generation count. */ 217 tag = gcov_read_unsigned (); 218 bbg_file_stamp = crc32_unsigned (bbg_file_stamp, tag); 219 220 counts_hash = new hash_table<counts_entry> (10); 221 while ((tag = gcov_read_unsigned ())) 222 { 223 gcov_unsigned_t length; 224 gcov_position_t offset; 225 226 length = gcov_read_unsigned (); 227 offset = gcov_position (); 228 if (tag == GCOV_TAG_FUNCTION) 229 { 230 if (length) 231 { 232 fn_ident = gcov_read_unsigned (); 233 lineno_checksum = gcov_read_unsigned (); 234 cfg_checksum = gcov_read_unsigned (); 235 } 236 else 237 fn_ident = lineno_checksum = cfg_checksum = 0; 238 } 239 else if (tag == GCOV_TAG_OBJECT_SUMMARY) 240 { 241 profile_info = XCNEW (gcov_summary); 242 profile_info->runs = gcov_read_unsigned (); 243 profile_info->sum_max = gcov_read_unsigned (); 244 } 245 else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident) 246 { 247 counts_entry **slot, *entry, elt; 248 unsigned n_counts = GCOV_TAG_COUNTER_NUM (length); 249 unsigned ix; 250 251 elt.ident = fn_ident; 252 elt.ctr = GCOV_COUNTER_FOR_TAG (tag); 253 254 slot = counts_hash->find_slot (&elt, INSERT); 255 entry = *slot; 256 if (!entry) 257 { 258 *slot = entry = XCNEW (counts_entry); 259 entry->ident = fn_ident; 260 entry->ctr = elt.ctr; 261 entry->lineno_checksum = lineno_checksum; 262 entry->cfg_checksum = cfg_checksum; 263 entry->counts = XCNEWVEC (gcov_type, n_counts); 264 entry->n_counts = n_counts; 265 } 266 else if (entry->lineno_checksum != lineno_checksum 267 || entry->cfg_checksum != cfg_checksum) 268 { 269 error ("profile data for function %u is corrupted", fn_ident); 270 error ("checksum is (%x,%x) instead of (%x,%x)", 271 entry->lineno_checksum, entry->cfg_checksum, 272 lineno_checksum, cfg_checksum); 273 delete counts_hash; 274 counts_hash = NULL; 275 break; 276 } 277 for (ix = 0; ix != n_counts; ix++) 278 entry->counts[ix] += gcov_read_counter (); 279 } 280 gcov_sync (offset, length); 281 if ((is_error = gcov_is_error ())) 282 { 283 error (is_error < 0 284 ? G_("%qs has overflowed") 285 : G_("%qs is corrupted"), 286 da_file_name); 287 delete counts_hash; 288 counts_hash = NULL; 289 break; 290 } 291 } 292 293 gcov_close (); 294 } 295 296 /* Returns the counters for a particular tag. */ 297 298 gcov_type * 299 get_coverage_counts (unsigned counter, unsigned cfg_checksum, 300 unsigned lineno_checksum, unsigned int n_counts) 301 { 302 counts_entry *entry, elt; 303 304 /* No hash table, no counts. */ 305 if (!counts_hash) 306 { 307 static int warned = 0; 308 309 if (!warned++) 310 { 311 warning (OPT_Wmissing_profile, 312 "%qs profile count data file not found", 313 da_file_name); 314 if (dump_enabled_p ()) 315 { 316 dump_user_location_t loc 317 = dump_user_location_t::from_location_t (input_location); 318 dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, 319 "file %s not found, %s\n", da_file_name, 320 (flag_guess_branch_prob 321 ? "execution counts estimated" 322 : "execution counts assumed to be zero")); 323 } 324 } 325 return NULL; 326 } 327 if (param_profile_func_internal_id) 328 elt.ident = current_function_funcdef_no + 1; 329 else 330 { 331 gcc_assert (coverage_node_map_initialized_p ()); 332 elt.ident = cgraph_node::get (current_function_decl)->profile_id; 333 } 334 elt.ctr = counter; 335 entry = counts_hash->find (&elt); 336 if (!entry) 337 { 338 if (counter == GCOV_COUNTER_ARCS) 339 warning_at (DECL_SOURCE_LOCATION (current_function_decl), 340 OPT_Wmissing_profile, 341 "profile for function %qD not found in profile data", 342 current_function_decl); 343 /* The function was not emitted, or is weak and not chosen in the 344 final executable. Silently fail, because there's nothing we 345 can do about it. */ 346 return NULL; 347 } 348 349 if (entry->cfg_checksum != cfg_checksum || entry->n_counts != n_counts) 350 { 351 static int warned = 0; 352 bool warning_printed = false; 353 354 if (entry->n_counts != n_counts) 355 warning_printed = 356 warning_at (DECL_SOURCE_LOCATION (current_function_decl), 357 OPT_Wcoverage_mismatch, 358 "number of counters in profile data for function %qD " 359 "does not match " 360 "its profile data (counter %qs, expected %i and have %i)", 361 current_function_decl, 362 ctr_names[counter], entry->n_counts, n_counts); 363 else 364 warning_printed = 365 warning_at (DECL_SOURCE_LOCATION (current_function_decl), 366 OPT_Wcoverage_mismatch, 367 "the control flow of function %qD does not match " 368 "its profile data (counter %qs)", current_function_decl, 369 ctr_names[counter]); 370 if (warning_printed && dump_enabled_p ()) 371 { 372 dump_user_location_t loc 373 = dump_user_location_t::from_function_decl (current_function_decl); 374 dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, 375 "use -Wno-error=coverage-mismatch to tolerate " 376 "the mismatch but performance may drop if the " 377 "function is hot\n"); 378 379 if (!seen_error () 380 && !warned++) 381 { 382 dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc, 383 "coverage mismatch ignored\n"); 384 dump_printf (MSG_MISSED_OPTIMIZATION, 385 flag_guess_branch_prob 386 ? G_("execution counts estimated\n") 387 : G_("execution counts assumed to be zero\n")); 388 if (!flag_guess_branch_prob) 389 dump_printf (MSG_MISSED_OPTIMIZATION, 390 "this can result in poorly optimized code\n"); 391 } 392 } 393 394 return NULL; 395 } 396 else if (entry->lineno_checksum != lineno_checksum) 397 { 398 warning_at (DECL_SOURCE_LOCATION (current_function_decl), 399 OPT_Wcoverage_mismatch, 400 "source locations for function %qD have changed," 401 " the profile data may be out of date", 402 current_function_decl); 403 } 404 405 return entry->counts; 406 } 407 408 /* Allocate NUM counters of type COUNTER. Returns nonzero if the 409 allocation succeeded. */ 410 411 int 412 coverage_counter_alloc (unsigned counter, unsigned num) 413 { 414 if (no_coverage) 415 return 0; 416 417 if (!num) 418 return 1; 419 420 if (!fn_v_ctrs[counter]) 421 { 422 tree array_type = build_array_type (get_gcov_type (), NULL_TREE); 423 424 fn_v_ctrs[counter] 425 = build_var (current_function_decl, array_type, counter); 426 } 427 428 fn_b_ctrs[counter] = fn_n_ctrs[counter]; 429 fn_n_ctrs[counter] += num; 430 431 fn_ctr_mask |= 1 << counter; 432 return 1; 433 } 434 435 /* Generate a tree to access COUNTER NO. */ 436 437 tree 438 tree_coverage_counter_ref (unsigned counter, unsigned no) 439 { 440 tree gcov_type_node = get_gcov_type (); 441 442 gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); 443 444 no += fn_b_ctrs[counter]; 445 446 /* "no" here is an array index, scaled to bytes later. */ 447 return build4 (ARRAY_REF, gcov_type_node, fn_v_ctrs[counter], 448 build_int_cst (integer_type_node, no), NULL, NULL); 449 } 450 451 /* Generate a tree to access the address of COUNTER NO. */ 452 453 tree 454 tree_coverage_counter_addr (unsigned counter, unsigned no) 455 { 456 tree gcov_type_node = get_gcov_type (); 457 458 gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); 459 no += fn_b_ctrs[counter]; 460 461 /* "no" here is an array index, scaled to bytes later. */ 462 return build_fold_addr_expr (build4 (ARRAY_REF, gcov_type_node, 463 fn_v_ctrs[counter], 464 build_int_cst (integer_type_node, no), 465 NULL, NULL)); 466 } 467 468 469 /* Generate a checksum for a string. CHKSUM is the current 470 checksum. */ 471 472 static unsigned 473 coverage_checksum_string (unsigned chksum, const char *string) 474 { 475 int i; 476 char *dup = NULL; 477 478 /* Look for everything that looks if it were produced by 479 get_file_function_name and zero out the second part 480 that may result from flag_random_seed. This is not critical 481 as the checksums are used only for sanity checking. */ 482 for (i = 0; string[i]; i++) 483 { 484 int offset = 0; 485 if (!strncmp (string + i, "_GLOBAL__N_", 11)) 486 offset = 11; 487 if (!strncmp (string + i, "_GLOBAL__", 9)) 488 offset = 9; 489 490 /* C++ namespaces do have scheme: 491 _GLOBAL__N_<filename>_<wrongmagicnumber>_<magicnumber>functionname 492 since filename might contain extra underscores there seems 493 to be no better chance then walk all possible offsets looking 494 for magicnumber. */ 495 if (offset) 496 { 497 for (i = i + offset; string[i]; i++) 498 if (string[i]=='_') 499 { 500 int y; 501 502 for (y = 1; y < 9; y++) 503 if (!(string[i + y] >= '0' && string[i + y] <= '9') 504 && !(string[i + y] >= 'A' && string[i + y] <= 'F')) 505 break; 506 if (y != 9 || string[i + 9] != '_') 507 continue; 508 for (y = 10; y < 18; y++) 509 if (!(string[i + y] >= '0' && string[i + y] <= '9') 510 && !(string[i + y] >= 'A' && string[i + y] <= 'F')) 511 break; 512 if (y != 18) 513 continue; 514 if (!dup) 515 string = dup = xstrdup (string); 516 for (y = 10; y < 18; y++) 517 dup[i + y] = '0'; 518 } 519 break; 520 } 521 } 522 523 chksum = crc32_string (chksum, string); 524 free (dup); 525 526 return chksum; 527 } 528 529 /* Compute checksum for the current function. We generate a CRC32. */ 530 531 unsigned 532 coverage_compute_lineno_checksum (void) 533 { 534 expanded_location xloc 535 = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); 536 unsigned chksum = xloc.line; 537 538 if (xloc.file) 539 chksum = coverage_checksum_string (chksum, xloc.file); 540 chksum = coverage_checksum_string 541 (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl))); 542 543 return chksum; 544 } 545 546 /* Compute profile ID. This is better to be unique in whole program. */ 547 548 unsigned 549 coverage_compute_profile_id (struct cgraph_node *n) 550 { 551 unsigned chksum; 552 553 /* Externally visible symbols have unique name. */ 554 if (TREE_PUBLIC (n->decl) || DECL_EXTERNAL (n->decl) || n->unique_name) 555 { 556 chksum = coverage_checksum_string 557 (0, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); 558 } 559 else 560 { 561 expanded_location xloc 562 = expand_location (DECL_SOURCE_LOCATION (n->decl)); 563 bool use_name_only = (param_profile_func_internal_id == 0); 564 565 chksum = (use_name_only ? 0 : xloc.line); 566 if (xloc.file) 567 chksum = coverage_checksum_string (chksum, xloc.file); 568 chksum = coverage_checksum_string 569 (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); 570 if (!use_name_only && first_global_object_name) 571 chksum = coverage_checksum_string 572 (chksum, first_global_object_name); 573 chksum = coverage_checksum_string 574 (chksum, aux_base_name); 575 } 576 577 /* Non-negative integers are hopefully small enough to fit in all targets. 578 Gcov file formats wants non-zero function IDs. */ 579 chksum = chksum & 0x7fffffff; 580 return chksum + (!chksum); 581 } 582 583 /* Compute cfg checksum for the function FN given as argument. 584 The checksum is calculated carefully so that 585 source code changes that doesn't affect the control flow graph 586 won't change the checksum. 587 This is to make the profile data useable across source code change. 588 The downside of this is that the compiler may use potentially 589 wrong profile data - that the source code change has non-trivial impact 590 on the validity of profile data (e.g. the reversed condition) 591 but the compiler won't detect the change and use the wrong profile data. */ 592 593 unsigned 594 coverage_compute_cfg_checksum (struct function *fn) 595 { 596 basic_block bb; 597 unsigned chksum = n_basic_blocks_for_fn (fn); 598 599 FOR_EACH_BB_FN (bb, fn) 600 { 601 edge e; 602 edge_iterator ei; 603 chksum = crc32_byte (chksum, bb->index); 604 FOR_EACH_EDGE (e, ei, bb->succs) 605 { 606 chksum = crc32_byte (chksum, e->dest->index); 607 } 608 } 609 610 return chksum; 611 } 612 613 /* Begin output to the notes file for the current function. 614 Writes the function header. Returns nonzero if data should be output. */ 615 616 int 617 coverage_begin_function (unsigned lineno_checksum, unsigned cfg_checksum) 618 { 619 /* We don't need to output .gcno file unless we're under -ftest-coverage 620 (e.g. -fprofile-arcs/generate/use don't need .gcno to work). */ 621 if (no_coverage || !bbg_file_name) 622 return 0; 623 624 expanded_location startloc 625 = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); 626 627 /* Announce function */ 628 unsigned long offset = gcov_write_tag (GCOV_TAG_FUNCTION); 629 if (param_profile_func_internal_id) 630 gcov_write_unsigned (current_function_funcdef_no + 1); 631 else 632 { 633 gcc_assert (coverage_node_map_initialized_p ()); 634 gcov_write_unsigned ( 635 cgraph_node::get (current_function_decl)->profile_id); 636 } 637 638 gcov_write_unsigned (lineno_checksum); 639 gcov_write_unsigned (cfg_checksum); 640 gcov_write_string (IDENTIFIER_POINTER 641 (DECL_ASSEMBLER_NAME (current_function_decl))); 642 gcov_write_unsigned (DECL_ARTIFICIAL (current_function_decl) 643 && !DECL_FUNCTION_VERSIONED (current_function_decl) 644 && !DECL_LAMBDA_FUNCTION_P (current_function_decl)); 645 gcov_write_filename (startloc.file); 646 gcov_write_unsigned (startloc.line); 647 gcov_write_unsigned (startloc.column); 648 649 expanded_location endloc = expand_location (cfun->function_end_locus); 650 651 /* Function can start in a single file and end in another one. */ 652 int end_line 653 = endloc.file == startloc.file ? endloc.line : startloc.line; 654 int end_column 655 = endloc.file == startloc.file ? endloc.column: startloc.column; 656 657 if (startloc.line > end_line) 658 { 659 end_line = startloc.line; 660 end_column = startloc.column; 661 } 662 663 gcov_write_unsigned (end_line); 664 gcov_write_unsigned (end_column); 665 gcov_write_length (offset); 666 667 return !gcov_is_error (); 668 } 669 670 /* Finish coverage data for the current function. Verify no output 671 error has occurred. Save function coverage counts. */ 672 673 void 674 coverage_end_function (unsigned lineno_checksum, unsigned cfg_checksum) 675 { 676 unsigned i; 677 678 if (bbg_file_name && gcov_is_error ()) 679 { 680 warning (0, "error writing %qs", bbg_file_name); 681 unlink (bbg_file_name); 682 bbg_file_name = NULL; 683 } 684 685 if (fn_ctr_mask) 686 { 687 struct coverage_data *item = 0; 688 689 item = ggc_alloc<coverage_data> (); 690 691 if (param_profile_func_internal_id) 692 item->ident = current_function_funcdef_no + 1; 693 else 694 { 695 gcc_assert (coverage_node_map_initialized_p ()); 696 item->ident = cgraph_node::get (cfun->decl)->profile_id; 697 } 698 699 item->lineno_checksum = lineno_checksum; 700 item->cfg_checksum = cfg_checksum; 701 702 item->fn_decl = current_function_decl; 703 item->next = 0; 704 *functions_tail = item; 705 functions_tail = &item->next; 706 707 for (i = 0; i != GCOV_COUNTERS; i++) 708 { 709 tree var = fn_v_ctrs[i]; 710 711 if (item) 712 item->ctr_vars[i] = var; 713 if (var) 714 { 715 tree array_type = build_index_type (size_int (fn_n_ctrs[i] - 1)); 716 array_type = build_array_type (get_gcov_type (), array_type); 717 TREE_TYPE (var) = array_type; 718 DECL_SIZE (var) = TYPE_SIZE (array_type); 719 DECL_SIZE_UNIT (var) = TYPE_SIZE_UNIT (array_type); 720 varpool_node::finalize_decl (var); 721 } 722 723 fn_b_ctrs[i] = fn_n_ctrs[i] = 0; 724 fn_v_ctrs[i] = NULL_TREE; 725 } 726 prg_ctr_mask |= fn_ctr_mask; 727 fn_ctr_mask = 0; 728 } 729 } 730 731 /* Remove coverage file if opened. */ 732 733 void 734 coverage_remove_note_file (void) 735 { 736 if (bbg_file_name) 737 { 738 gcov_close (); 739 unlink (bbg_file_name); 740 } 741 } 742 743 /* Build a coverage variable of TYPE for function FN_DECL. If COUNTER 744 >= 0 it is a counter array, otherwise it is the function structure. */ 745 746 static tree 747 build_var (tree fn_decl, tree type, int counter) 748 { 749 tree var = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, type); 750 const char *fn_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn_decl)); 751 char *buf; 752 size_t fn_name_len, len; 753 754 fn_name = targetm.strip_name_encoding (fn_name); 755 fn_name_len = strlen (fn_name); 756 buf = XALLOCAVEC (char, fn_name_len + 8 + sizeof (int) * 3); 757 758 if (counter < 0) 759 strcpy (buf, "__gcov__"); 760 else 761 sprintf (buf, "__gcov%u_", counter); 762 len = strlen (buf); 763 buf[len - 1] = symbol_table::symbol_suffix_separator (); 764 memcpy (buf + len, fn_name, fn_name_len + 1); 765 DECL_NAME (var) = get_identifier (buf); 766 TREE_STATIC (var) = 1; 767 TREE_ADDRESSABLE (var) = 1; 768 DECL_NONALIASED (var) = 1; 769 SET_DECL_ALIGN (var, TYPE_ALIGN (type)); 770 771 return var; 772 } 773 774 /* Creates the gcov_fn_info RECORD_TYPE. */ 775 776 static void 777 build_fn_info_type (tree type, unsigned counters, tree gcov_info_type) 778 { 779 tree ctr_info = lang_hooks.types.make_type (RECORD_TYPE); 780 tree field, fields; 781 tree array_type; 782 783 gcc_assert (counters); 784 785 /* ctr_info::num */ 786 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 787 get_gcov_unsigned_t ()); 788 fields = field; 789 790 /* ctr_info::values */ 791 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 792 build_pointer_type (get_gcov_type ())); 793 DECL_CHAIN (field) = fields; 794 fields = field; 795 796 finish_builtin_struct (ctr_info, "__gcov_ctr_info", fields, NULL_TREE); 797 798 /* key */ 799 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 800 build_pointer_type (build_qualified_type 801 (gcov_info_type, TYPE_QUAL_CONST))); 802 fields = field; 803 804 /* ident */ 805 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 806 get_gcov_unsigned_t ()); 807 DECL_CHAIN (field) = fields; 808 fields = field; 809 810 /* lineno_checksum */ 811 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 812 get_gcov_unsigned_t ()); 813 DECL_CHAIN (field) = fields; 814 fields = field; 815 816 /* cfg checksum */ 817 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 818 get_gcov_unsigned_t ()); 819 DECL_CHAIN (field) = fields; 820 fields = field; 821 822 array_type = build_index_type (size_int (counters - 1)); 823 array_type = build_array_type (ctr_info, array_type); 824 825 /* counters */ 826 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, array_type); 827 DECL_CHAIN (field) = fields; 828 fields = field; 829 830 finish_builtin_struct (type, "__gcov_fn_info", fields, NULL_TREE); 831 } 832 833 /* Returns a CONSTRUCTOR for a gcov_fn_info. DATA is 834 the coverage data for the function and TYPE is the gcov_fn_info 835 RECORD_TYPE. KEY is the object file key. */ 836 837 static tree 838 build_fn_info (const struct coverage_data *data, tree type, tree key) 839 { 840 tree fields = TYPE_FIELDS (type); 841 tree ctr_type; 842 unsigned ix; 843 vec<constructor_elt, va_gc> *v1 = NULL; 844 vec<constructor_elt, va_gc> *v2 = NULL; 845 846 /* key */ 847 CONSTRUCTOR_APPEND_ELT (v1, fields, 848 build1 (ADDR_EXPR, TREE_TYPE (fields), key)); 849 fields = DECL_CHAIN (fields); 850 851 /* ident */ 852 CONSTRUCTOR_APPEND_ELT (v1, fields, 853 build_int_cstu (get_gcov_unsigned_t (), 854 data->ident)); 855 fields = DECL_CHAIN (fields); 856 857 /* lineno_checksum */ 858 CONSTRUCTOR_APPEND_ELT (v1, fields, 859 build_int_cstu (get_gcov_unsigned_t (), 860 data->lineno_checksum)); 861 fields = DECL_CHAIN (fields); 862 863 /* cfg_checksum */ 864 CONSTRUCTOR_APPEND_ELT (v1, fields, 865 build_int_cstu (get_gcov_unsigned_t (), 866 data->cfg_checksum)); 867 fields = DECL_CHAIN (fields); 868 869 /* counters */ 870 ctr_type = TREE_TYPE (TREE_TYPE (fields)); 871 for (ix = 0; ix != GCOV_COUNTERS; ix++) 872 if (prg_ctr_mask & (1 << ix)) 873 { 874 vec<constructor_elt, va_gc> *ctr = NULL; 875 tree var = data->ctr_vars[ix]; 876 unsigned count = 0; 877 878 if (var) 879 count 880 = tree_to_shwi (TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (var)))) 881 + 1; 882 883 CONSTRUCTOR_APPEND_ELT (ctr, TYPE_FIELDS (ctr_type), 884 build_int_cstu (get_gcov_unsigned_t (), 885 count)); 886 887 if (var) 888 CONSTRUCTOR_APPEND_ELT (ctr, DECL_CHAIN (TYPE_FIELDS (ctr_type)), 889 build_fold_addr_expr (var)); 890 891 CONSTRUCTOR_APPEND_ELT (v2, NULL, build_constructor (ctr_type, ctr)); 892 } 893 894 CONSTRUCTOR_APPEND_ELT (v1, fields, 895 build_constructor (TREE_TYPE (fields), v2)); 896 897 return build_constructor (type, v1); 898 } 899 900 /* Create gcov_info struct. TYPE is the incomplete RECORD_TYPE to be 901 completed, and FN_INFO_PTR_TYPE is a pointer to the function info type. */ 902 903 static void 904 build_info_type (tree type, tree fn_info_ptr_type) 905 { 906 tree field, fields = NULL_TREE; 907 tree merge_fn_type; 908 909 /* Version ident */ 910 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 911 get_gcov_unsigned_t ()); 912 DECL_CHAIN (field) = fields; 913 fields = field; 914 915 /* next pointer */ 916 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 917 build_pointer_type (build_qualified_type 918 (type, TYPE_QUAL_CONST))); 919 DECL_CHAIN (field) = fields; 920 fields = field; 921 922 /* stamp */ 923 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 924 get_gcov_unsigned_t ()); 925 DECL_CHAIN (field) = fields; 926 fields = field; 927 928 /* Filename */ 929 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 930 build_pointer_type (build_qualified_type 931 (char_type_node, TYPE_QUAL_CONST))); 932 DECL_CHAIN (field) = fields; 933 fields = field; 934 935 /* merge fn array */ 936 merge_fn_type 937 = build_function_type_list (void_type_node, 938 build_pointer_type (get_gcov_type ()), 939 get_gcov_unsigned_t (), NULL_TREE); 940 merge_fn_type 941 = build_array_type (build_pointer_type (merge_fn_type), 942 build_index_type (size_int (GCOV_COUNTERS - 1))); 943 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 944 merge_fn_type); 945 DECL_CHAIN (field) = fields; 946 fields = field; 947 948 /* n_functions */ 949 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 950 get_gcov_unsigned_t ()); 951 DECL_CHAIN (field) = fields; 952 fields = field; 953 954 /* function_info pointer pointer */ 955 fn_info_ptr_type = build_pointer_type 956 (build_qualified_type (fn_info_ptr_type, TYPE_QUAL_CONST)); 957 field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, 958 fn_info_ptr_type); 959 DECL_CHAIN (field) = fields; 960 fields = field; 961 962 finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE); 963 } 964 965 /* Returns a CONSTRUCTOR for the gcov_info object. INFO_TYPE is the 966 gcov_info structure type, FN_ARY is the array of pointers to 967 function info objects. */ 968 969 static tree 970 build_info (tree info_type, tree fn_ary) 971 { 972 tree info_fields = TYPE_FIELDS (info_type); 973 tree merge_fn_type, n_funcs; 974 unsigned ix; 975 tree filename_string; 976 int da_file_name_len; 977 vec<constructor_elt, va_gc> *v1 = NULL; 978 vec<constructor_elt, va_gc> *v2 = NULL; 979 980 /* Version ident */ 981 CONSTRUCTOR_APPEND_ELT (v1, info_fields, 982 build_int_cstu (TREE_TYPE (info_fields), 983 GCOV_VERSION)); 984 info_fields = DECL_CHAIN (info_fields); 985 986 /* next -- NULL */ 987 CONSTRUCTOR_APPEND_ELT (v1, info_fields, null_pointer_node); 988 info_fields = DECL_CHAIN (info_fields); 989 990 /* stamp */ 991 CONSTRUCTOR_APPEND_ELT (v1, info_fields, 992 build_int_cstu (TREE_TYPE (info_fields), 993 bbg_file_stamp)); 994 info_fields = DECL_CHAIN (info_fields); 995 996 /* Filename */ 997 da_file_name_len = strlen (da_file_name); 998 filename_string = build_string (da_file_name_len + 1, da_file_name); 999 TREE_TYPE (filename_string) = build_array_type 1000 (char_type_node, build_index_type (size_int (da_file_name_len))); 1001 CONSTRUCTOR_APPEND_ELT (v1, info_fields, 1002 build1 (ADDR_EXPR, TREE_TYPE (info_fields), 1003 filename_string)); 1004 info_fields = DECL_CHAIN (info_fields); 1005 1006 /* merge fn array -- NULL slots indicate unmeasured counters */ 1007 merge_fn_type = TREE_TYPE (TREE_TYPE (info_fields)); 1008 for (ix = 0; ix != GCOV_COUNTERS; ix++) 1009 { 1010 tree ptr = null_pointer_node; 1011 1012 if ((1u << ix) & prg_ctr_mask) 1013 { 1014 tree merge_fn = build_decl (BUILTINS_LOCATION, 1015 FUNCTION_DECL, 1016 get_identifier (ctr_merge_functions[ix]), 1017 TREE_TYPE (merge_fn_type)); 1018 DECL_EXTERNAL (merge_fn) = 1; 1019 TREE_PUBLIC (merge_fn) = 1; 1020 DECL_ARTIFICIAL (merge_fn) = 1; 1021 TREE_NOTHROW (merge_fn) = 1; 1022 /* Initialize assembler name so we can stream out. */ 1023 DECL_ASSEMBLER_NAME (merge_fn); 1024 ptr = build1 (ADDR_EXPR, merge_fn_type, merge_fn); 1025 } 1026 CONSTRUCTOR_APPEND_ELT (v2, NULL, ptr); 1027 } 1028 CONSTRUCTOR_APPEND_ELT (v1, info_fields, 1029 build_constructor (TREE_TYPE (info_fields), v2)); 1030 info_fields = DECL_CHAIN (info_fields); 1031 1032 /* n_functions */ 1033 n_funcs = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (fn_ary))); 1034 n_funcs = fold_build2 (PLUS_EXPR, TREE_TYPE (info_fields), 1035 n_funcs, size_one_node); 1036 CONSTRUCTOR_APPEND_ELT (v1, info_fields, n_funcs); 1037 info_fields = DECL_CHAIN (info_fields); 1038 1039 /* functions */ 1040 CONSTRUCTOR_APPEND_ELT (v1, info_fields, 1041 build1 (ADDR_EXPR, TREE_TYPE (info_fields), fn_ary)); 1042 info_fields = DECL_CHAIN (info_fields); 1043 1044 gcc_assert (!info_fields); 1045 return build_constructor (info_type, v1); 1046 } 1047 1048 /* Generate the constructor function to call __gcov_init. */ 1049 1050 static void 1051 build_init_ctor (tree gcov_info_type) 1052 { 1053 tree ctor, stmt, init_fn; 1054 1055 /* Build a decl for __gcov_init. */ 1056 init_fn = build_pointer_type (gcov_info_type); 1057 init_fn = build_function_type_list (void_type_node, init_fn, NULL); 1058 init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, 1059 get_identifier ("__gcov_init"), init_fn); 1060 TREE_PUBLIC (init_fn) = 1; 1061 DECL_EXTERNAL (init_fn) = 1; 1062 DECL_ASSEMBLER_NAME (init_fn); 1063 1064 /* Generate a call to __gcov_init(&gcov_info). */ 1065 ctor = NULL; 1066 stmt = build_fold_addr_expr (gcov_info_var); 1067 stmt = build_call_expr (init_fn, 1, stmt); 1068 append_to_statement_list (stmt, &ctor); 1069 1070 /* Generate a constructor to run it. */ 1071 int priority = SUPPORTS_INIT_PRIORITY 1072 ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; 1073 cgraph_build_static_cdtor ('I', ctor, priority); 1074 } 1075 1076 /* Generate the destructor function to call __gcov_exit. */ 1077 1078 static void 1079 build_gcov_exit_decl (void) 1080 { 1081 tree init_fn = build_function_type_list (void_type_node, NULL); 1082 init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, 1083 get_identifier ("__gcov_exit"), init_fn); 1084 TREE_PUBLIC (init_fn) = 1; 1085 DECL_EXTERNAL (init_fn) = 1; 1086 DECL_ASSEMBLER_NAME (init_fn); 1087 1088 /* Generate a call to __gcov_exit (). */ 1089 tree dtor = NULL; 1090 tree stmt = build_call_expr (init_fn, 0); 1091 append_to_statement_list (stmt, &dtor); 1092 1093 /* Generate a destructor to run it. */ 1094 int priority = SUPPORTS_INIT_PRIORITY 1095 ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; 1096 1097 cgraph_build_static_cdtor ('D', dtor, priority); 1098 } 1099 1100 /* Create the gcov_info types and object. Generate the constructor 1101 function to call __gcov_init. Does not generate the initializer 1102 for the object. Returns TRUE if coverage data is being emitted. */ 1103 1104 static bool 1105 coverage_obj_init (void) 1106 { 1107 tree gcov_info_type; 1108 unsigned n_counters = 0; 1109 unsigned ix; 1110 struct coverage_data *fn; 1111 struct coverage_data **fn_prev; 1112 char name_buf[32]; 1113 1114 no_coverage = 1; /* Disable any further coverage. */ 1115 1116 if (!prg_ctr_mask) 1117 return false; 1118 1119 if (symtab->dump_file) 1120 fprintf (symtab->dump_file, "Using data file %s\n", da_file_name); 1121 1122 /* Prune functions. */ 1123 for (fn_prev = &functions_head; (fn = *fn_prev);) 1124 if (DECL_STRUCT_FUNCTION (fn->fn_decl)) 1125 fn_prev = &fn->next; 1126 else 1127 /* The function is not being emitted, remove from list. */ 1128 *fn_prev = fn->next; 1129 1130 if (functions_head == NULL) 1131 return false; 1132 1133 for (ix = 0; ix != GCOV_COUNTERS; ix++) 1134 if ((1u << ix) & prg_ctr_mask) 1135 n_counters++; 1136 1137 /* Build the info and fn_info types. These are mutually recursive. */ 1138 gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); 1139 gcov_fn_info_type = lang_hooks.types.make_type (RECORD_TYPE); 1140 build_fn_info_type (gcov_fn_info_type, n_counters, gcov_info_type); 1141 gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); 1142 gcov_fn_info_ptr_type = build_pointer_type 1143 (build_qualified_type (gcov_fn_info_type, TYPE_QUAL_CONST)); 1144 build_info_type (gcov_info_type, gcov_fn_info_ptr_type); 1145 1146 /* Build the gcov info var, this is referred to in its own 1147 initializer. */ 1148 gcov_info_var = build_decl (BUILTINS_LOCATION, 1149 VAR_DECL, NULL_TREE, gcov_info_type); 1150 TREE_STATIC (gcov_info_var) = 1; 1151 ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 0); 1152 DECL_NAME (gcov_info_var) = get_identifier (name_buf); 1153 1154 build_init_ctor (gcov_info_type); 1155 build_gcov_exit_decl (); 1156 1157 return true; 1158 } 1159 1160 /* Generate the coverage function info for FN and DATA. Append a 1161 pointer to that object to CTOR and return the appended CTOR. */ 1162 1163 static vec<constructor_elt, va_gc> * 1164 coverage_obj_fn (vec<constructor_elt, va_gc> *ctor, tree fn, 1165 struct coverage_data const *data) 1166 { 1167 tree init = build_fn_info (data, gcov_fn_info_type, gcov_info_var); 1168 tree var = build_var (fn, gcov_fn_info_type, -1); 1169 1170 DECL_INITIAL (var) = init; 1171 varpool_node::finalize_decl (var); 1172 1173 CONSTRUCTOR_APPEND_ELT (ctor, NULL, 1174 build1 (ADDR_EXPR, gcov_fn_info_ptr_type, var)); 1175 return ctor; 1176 } 1177 1178 /* Finalize the coverage data. Generates the array of pointers to 1179 function objects from CTOR. Generate the gcov_info initializer. */ 1180 1181 static void 1182 coverage_obj_finish (vec<constructor_elt, va_gc> *ctor) 1183 { 1184 unsigned n_functions = vec_safe_length (ctor); 1185 tree fn_info_ary_type = build_array_type 1186 (build_qualified_type (gcov_fn_info_ptr_type, TYPE_QUAL_CONST), 1187 build_index_type (size_int (n_functions - 1))); 1188 tree fn_info_ary = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, 1189 fn_info_ary_type); 1190 char name_buf[32]; 1191 1192 TREE_STATIC (fn_info_ary) = 1; 1193 ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 1); 1194 DECL_NAME (fn_info_ary) = get_identifier (name_buf); 1195 DECL_INITIAL (fn_info_ary) = build_constructor (fn_info_ary_type, ctor); 1196 varpool_node::finalize_decl (fn_info_ary); 1197 1198 DECL_INITIAL (gcov_info_var) 1199 = build_info (TREE_TYPE (gcov_info_var), fn_info_ary); 1200 varpool_node::finalize_decl (gcov_info_var); 1201 } 1202 1203 /* Perform file-level initialization. Read in data file, generate name 1204 of notes file. */ 1205 1206 void 1207 coverage_init (const char *filename) 1208 { 1209 const char *original_filename = filename; 1210 int original_len = strlen (original_filename); 1211 #if HAVE_DOS_BASED_FILE_SYSTEM 1212 const char *separator = "\\"; 1213 #else 1214 const char *separator = "/"; 1215 #endif 1216 int len = strlen (filename); 1217 int prefix_len = 0; 1218 1219 /* Since coverage_init is invoked very early, before the pass 1220 manager, we need to set up the dumping explicitly. This is 1221 similar to the handling in finish_optimization_passes. */ 1222 int profile_pass_num = 1223 g->get_passes ()->get_pass_profile ()->static_pass_number; 1224 g->get_dumps ()->dump_start (profile_pass_num, NULL); 1225 1226 if (!IS_ABSOLUTE_PATH (filename)) 1227 { 1228 /* When a profile_data_prefix is provided, then mangle full path 1229 of filename in order to prevent file path clashing. */ 1230 if (profile_data_prefix) 1231 { 1232 filename = concat (getpwd (), separator, filename, NULL); 1233 if (profile_prefix_path) 1234 { 1235 if (!strncmp (filename, profile_prefix_path, 1236 strlen (profile_prefix_path))) 1237 { 1238 filename += strlen (profile_prefix_path); 1239 while (*filename == *separator) 1240 filename++; 1241 } 1242 else 1243 warning (0, "filename %qs does not start with profile " 1244 "prefix %qs", filename, profile_prefix_path); 1245 } 1246 filename = mangle_path (filename); 1247 len = strlen (filename); 1248 } 1249 else 1250 profile_data_prefix = getpwd (); 1251 } 1252 1253 if (profile_data_prefix) 1254 prefix_len = strlen (profile_data_prefix); 1255 1256 /* Name of da file. */ 1257 da_file_name = XNEWVEC (char, len + strlen (GCOV_DATA_SUFFIX) 1258 + prefix_len + 2); 1259 1260 if (profile_data_prefix) 1261 { 1262 memcpy (da_file_name, profile_data_prefix, prefix_len); 1263 da_file_name[prefix_len++] = *separator; 1264 } 1265 memcpy (da_file_name + prefix_len, filename, len); 1266 strcpy (da_file_name + prefix_len + len, GCOV_DATA_SUFFIX); 1267 1268 bbg_file_stamp = local_tick; 1269 1270 if (flag_auto_profile) 1271 read_autofdo_file (); 1272 else if (flag_branch_probabilities) 1273 read_counts_file (); 1274 1275 /* Name of bbg file. */ 1276 if (flag_test_coverage && !flag_compare_debug) 1277 { 1278 if (profile_note_location) 1279 bbg_file_name = xstrdup (profile_note_location); 1280 else 1281 { 1282 bbg_file_name = XNEWVEC (char, original_len + strlen (GCOV_NOTE_SUFFIX) + 1); 1283 memcpy (bbg_file_name, original_filename, original_len); 1284 strcpy (bbg_file_name + original_len, GCOV_NOTE_SUFFIX); 1285 } 1286 1287 if (!gcov_open (bbg_file_name, -1)) 1288 { 1289 error ("cannot open %s", bbg_file_name); 1290 bbg_file_name = NULL; 1291 } 1292 else 1293 { 1294 gcov_write_unsigned (GCOV_NOTE_MAGIC); 1295 gcov_write_unsigned (GCOV_VERSION); 1296 gcov_write_unsigned (bbg_file_stamp); 1297 gcov_write_string (getpwd ()); 1298 1299 /* Do not support has_unexecuted_blocks for Ada. */ 1300 gcov_write_unsigned (strcmp (lang_hooks.name, "GNU Ada") != 0); 1301 } 1302 } 1303 1304 g->get_dumps ()->dump_finish (profile_pass_num); 1305 } 1306 1307 /* Performs file-level cleanup. Close notes file, generate coverage 1308 variables and constructor. */ 1309 1310 void 1311 coverage_finish (void) 1312 { 1313 if (bbg_file_name && gcov_close ()) 1314 unlink (bbg_file_name); 1315 1316 if (!flag_branch_probabilities && flag_test_coverage 1317 && (!local_tick || local_tick == (unsigned)-1)) 1318 /* Only remove the da file, if we're emitting coverage code and 1319 cannot uniquely stamp it. If we can stamp it, libgcov will DTRT. */ 1320 unlink (da_file_name); 1321 1322 if (coverage_obj_init ()) 1323 { 1324 vec<constructor_elt, va_gc> *fn_ctor = NULL; 1325 struct coverage_data *fn; 1326 1327 for (fn = functions_head; fn; fn = fn->next) 1328 fn_ctor = coverage_obj_fn (fn_ctor, fn->fn_decl, fn); 1329 coverage_obj_finish (fn_ctor); 1330 } 1331 1332 XDELETEVEC (da_file_name); 1333 da_file_name = NULL; 1334 } 1335 1336 #include "gt-coverage.h" 1337