| /* Read and write coverage files, and associated functionality. |
| Copyright (C) 1990-2017 Free Software Foundation, Inc. |
| Contributed by James E. Wilson, UC Berkeley/Cygnus Support; |
| based on some ideas from Dain Samples of UC Berkeley. |
| Further mangling by Bob Manson, Cygnus Support. |
| Further mangled by Nathan Sidwell, CodeSourcery |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| |
| #define GCOV_LINKAGE |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "backend.h" |
| #include "target.h" |
| #include "rtl.h" |
| #include "tree.h" |
| #include "tree-pass.h" |
| #include "memmodel.h" |
| #include "tm_p.h" |
| #include "stringpool.h" |
| #include "cgraph.h" |
| #include "coverage.h" |
| #include "diagnostic-core.h" |
| #include "fold-const.h" |
| #include "stor-layout.h" |
| #include "output.h" |
| #include "toplev.h" |
| #include "langhooks.h" |
| #include "tree-iterator.h" |
| #include "context.h" |
| #include "pass_manager.h" |
| #include "intl.h" |
| #include "params.h" |
| #include "auto-profile.h" |
| |
| #include "gcov-io.c" |
| |
| struct GTY((chain_next ("%h.next"))) coverage_data |
| { |
| struct coverage_data *next; /* next function */ |
| unsigned ident; /* function ident */ |
| unsigned lineno_checksum; /* function lineno checksum */ |
| unsigned cfg_checksum; /* function cfg checksum */ |
| tree fn_decl; /* the function decl */ |
| tree ctr_vars[GCOV_COUNTERS]; /* counter variables. */ |
| }; |
| |
| /* Counts information for a function. */ |
| struct counts_entry : pointer_hash <counts_entry> |
| { |
| /* We hash by */ |
| unsigned ident; |
| unsigned ctr; |
| |
| /* Store */ |
| unsigned lineno_checksum; |
| unsigned cfg_checksum; |
| gcov_type *counts; |
| struct gcov_ctr_summary summary; |
| |
| /* hash_table support. */ |
| static inline hashval_t hash (const counts_entry *); |
| static int equal (const counts_entry *, const counts_entry *); |
| static void remove (counts_entry *); |
| }; |
| |
| static GTY(()) struct coverage_data *functions_head = 0; |
| static struct coverage_data **functions_tail = &functions_head; |
| static unsigned no_coverage = 0; |
| |
| /* Cumulative counter information for whole program. */ |
| static unsigned prg_ctr_mask; /* Mask of counter types generated. */ |
| |
| /* Counter information for current function. */ |
| static unsigned fn_ctr_mask; /* Mask of counters used. */ |
| static GTY(()) tree fn_v_ctrs[GCOV_COUNTERS]; /* counter variables. */ |
| static unsigned fn_n_ctrs[GCOV_COUNTERS]; /* Counters allocated. */ |
| static unsigned fn_b_ctrs[GCOV_COUNTERS]; /* Allocation base. */ |
| |
| /* Coverage info VAR_DECL and function info type nodes. */ |
| static GTY(()) tree gcov_info_var; |
| static GTY(()) tree gcov_fn_info_type; |
| static GTY(()) tree gcov_fn_info_ptr_type; |
| |
| /* Name of the notes (gcno) output file. The "bbg" prefix is for |
| historical reasons, when the notes file contained only the |
| basic block graph notes. |
| If this is NULL we're not writing to the notes file. */ |
| static char *bbg_file_name; |
| |
| /* File stamp for notes file. */ |
| static unsigned bbg_file_stamp; |
| |
| /* Name of the count data (gcda) file. */ |
| static char *da_file_name; |
| |
| /* The names of merge functions for counters. */ |
| #define STR(str) #str |
| #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) STR(__gcov_merge ## FN_TYPE), |
| static const char *const ctr_merge_functions[GCOV_COUNTERS] = { |
| #include "gcov-counter.def" |
| }; |
| #undef DEF_GCOV_COUNTER |
| #undef STR |
| |
| #define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) NAME, |
| static const char *const ctr_names[GCOV_COUNTERS] = { |
| #include "gcov-counter.def" |
| }; |
| #undef DEF_GCOV_COUNTER |
| |
| /* Forward declarations. */ |
| static void read_counts_file (void); |
| static tree build_var (tree, tree, int); |
| static void build_fn_info_type (tree, unsigned, tree); |
| static void build_info_type (tree, tree); |
| static tree build_fn_info (const struct coverage_data *, tree, tree); |
| static tree build_info (tree, tree); |
| static bool coverage_obj_init (void); |
| static vec<constructor_elt, va_gc> *coverage_obj_fn |
| (vec<constructor_elt, va_gc> *, tree, struct coverage_data const *); |
| static void coverage_obj_finish (vec<constructor_elt, va_gc> *); |
| |
| /* Return the type node for gcov_type. */ |
| |
| tree |
| get_gcov_type (void) |
| { |
| scalar_int_mode mode |
| = smallest_int_mode_for_size (LONG_LONG_TYPE_SIZE > 32 ? 64 : 32); |
| return lang_hooks.types.type_for_mode (mode, false); |
| } |
| |
| /* Return the type node for gcov_unsigned_t. */ |
| |
| static tree |
| get_gcov_unsigned_t (void) |
| { |
| scalar_int_mode mode = smallest_int_mode_for_size (32); |
| return lang_hooks.types.type_for_mode (mode, true); |
| } |
| |
| inline hashval_t |
| counts_entry::hash (const counts_entry *entry) |
| { |
| return entry->ident * GCOV_COUNTERS + entry->ctr; |
| } |
| |
| inline int |
| counts_entry::equal (const counts_entry *entry1, const counts_entry *entry2) |
| { |
| return entry1->ident == entry2->ident && entry1->ctr == entry2->ctr; |
| } |
| |
| inline void |
| counts_entry::remove (counts_entry *entry) |
| { |
| free (entry->counts); |
| free (entry); |
| } |
| |
| /* Hash table of count data. */ |
| static hash_table<counts_entry> *counts_hash; |
| |
| /* Read in the counts file, if available. */ |
| |
| static void |
| read_counts_file (void) |
| { |
| gcov_unsigned_t fn_ident = 0; |
| struct gcov_summary summary; |
| unsigned new_summary = 1; |
| gcov_unsigned_t tag; |
| int is_error = 0; |
| unsigned lineno_checksum = 0; |
| unsigned cfg_checksum = 0; |
| |
| if (!gcov_open (da_file_name, 1)) |
| return; |
| |
| if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC)) |
| { |
| warning (0, "%qs is not a gcov data file", da_file_name); |
| gcov_close (); |
| return; |
| } |
| else if ((tag = gcov_read_unsigned ()) != GCOV_VERSION) |
| { |
| char v[4], e[4]; |
| |
| GCOV_UNSIGNED2STRING (v, tag); |
| GCOV_UNSIGNED2STRING (e, GCOV_VERSION); |
| |
| warning (0, "%qs is version %q.*s, expected version %q.*s", |
| da_file_name, 4, v, 4, e); |
| gcov_close (); |
| return; |
| } |
| |
| /* Read the stamp, used for creating a generation count. */ |
| tag = gcov_read_unsigned (); |
| bbg_file_stamp = crc32_unsigned (bbg_file_stamp, tag); |
| |
| counts_hash = new hash_table<counts_entry> (10); |
| while ((tag = gcov_read_unsigned ())) |
| { |
| gcov_unsigned_t length; |
| gcov_position_t offset; |
| |
| length = gcov_read_unsigned (); |
| offset = gcov_position (); |
| if (tag == GCOV_TAG_FUNCTION) |
| { |
| if (length) |
| { |
| fn_ident = gcov_read_unsigned (); |
| lineno_checksum = gcov_read_unsigned (); |
| cfg_checksum = gcov_read_unsigned (); |
| } |
| else |
| fn_ident = lineno_checksum = cfg_checksum = 0; |
| new_summary = 1; |
| } |
| else if (tag == GCOV_TAG_PROGRAM_SUMMARY) |
| { |
| struct gcov_summary sum; |
| unsigned ix; |
| |
| if (new_summary) |
| memset (&summary, 0, sizeof (summary)); |
| |
| gcov_read_summary (&sum); |
| for (ix = 0; ix != GCOV_COUNTERS_SUMMABLE; ix++) |
| { |
| summary.ctrs[ix].runs += sum.ctrs[ix].runs; |
| summary.ctrs[ix].sum_all += sum.ctrs[ix].sum_all; |
| if (summary.ctrs[ix].run_max < sum.ctrs[ix].run_max) |
| summary.ctrs[ix].run_max = sum.ctrs[ix].run_max; |
| summary.ctrs[ix].sum_max += sum.ctrs[ix].sum_max; |
| } |
| if (new_summary) |
| memcpy (summary.ctrs[GCOV_COUNTER_ARCS].histogram, |
| sum.ctrs[GCOV_COUNTER_ARCS].histogram, |
| sizeof (gcov_bucket_type) * GCOV_HISTOGRAM_SIZE); |
| else |
| gcov_histogram_merge (summary.ctrs[GCOV_COUNTER_ARCS].histogram, |
| sum.ctrs[GCOV_COUNTER_ARCS].histogram); |
| new_summary = 0; |
| } |
| else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident) |
| { |
| counts_entry **slot, *entry, elt; |
| unsigned n_counts = GCOV_TAG_COUNTER_NUM (length); |
| unsigned ix; |
| |
| elt.ident = fn_ident; |
| elt.ctr = GCOV_COUNTER_FOR_TAG (tag); |
| |
| slot = counts_hash->find_slot (&elt, INSERT); |
| entry = *slot; |
| if (!entry) |
| { |
| *slot = entry = XCNEW (counts_entry); |
| entry->ident = fn_ident; |
| entry->ctr = elt.ctr; |
| entry->lineno_checksum = lineno_checksum; |
| entry->cfg_checksum = cfg_checksum; |
| if (elt.ctr < GCOV_COUNTERS_SUMMABLE) |
| entry->summary = summary.ctrs[elt.ctr]; |
| entry->summary.num = n_counts; |
| entry->counts = XCNEWVEC (gcov_type, n_counts); |
| } |
| else if (entry->lineno_checksum != lineno_checksum |
| || entry->cfg_checksum != cfg_checksum) |
| { |
| error ("Profile data for function %u is corrupted", fn_ident); |
| error ("checksum is (%x,%x) instead of (%x,%x)", |
| entry->lineno_checksum, entry->cfg_checksum, |
| lineno_checksum, cfg_checksum); |
| delete counts_hash; |
| counts_hash = NULL; |
| break; |
| } |
| else if (entry->summary.num != n_counts) |
| { |
| error ("Profile data for function %u is corrupted", fn_ident); |
| error ("number of counters is %d instead of %d", entry->summary.num, n_counts); |
| delete counts_hash; |
| counts_hash = NULL; |
| break; |
| } |
| else if (elt.ctr >= GCOV_COUNTERS_SUMMABLE) |
| { |
| error ("cannot merge separate %s counters for function %u", |
| ctr_names[elt.ctr], fn_ident); |
| goto skip_merge; |
| } |
| else |
| { |
| entry->summary.runs += summary.ctrs[elt.ctr].runs; |
| entry->summary.sum_all += summary.ctrs[elt.ctr].sum_all; |
| if (entry->summary.run_max < summary.ctrs[elt.ctr].run_max) |
| entry->summary.run_max = summary.ctrs[elt.ctr].run_max; |
| entry->summary.sum_max += summary.ctrs[elt.ctr].sum_max; |
| } |
| for (ix = 0; ix != n_counts; ix++) |
| entry->counts[ix] += gcov_read_counter (); |
| skip_merge:; |
| } |
| gcov_sync (offset, length); |
| if ((is_error = gcov_is_error ())) |
| { |
| error (is_error < 0 |
| ? G_("%qs has overflowed") |
| : G_("%qs is corrupted"), |
| da_file_name); |
| delete counts_hash; |
| counts_hash = NULL; |
| break; |
| } |
| } |
| |
| gcov_close (); |
| } |
| |
| /* Returns the counters for a particular tag. */ |
| |
| gcov_type * |
| get_coverage_counts (unsigned counter, unsigned expected, |
| unsigned cfg_checksum, unsigned lineno_checksum, |
| const struct gcov_ctr_summary **summary) |
| { |
| counts_entry *entry, elt; |
| |
| /* No hash table, no counts. */ |
| if (!counts_hash) |
| { |
| static int warned = 0; |
| |
| if (!warned++ && dump_enabled_p ()) |
| dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, input_location, |
| (flag_guess_branch_prob |
| ? "file %s not found, execution counts estimated\n" |
| : "file %s not found, execution counts assumed to " |
| "be zero\n"), |
| da_file_name); |
| return NULL; |
| } |
| if (PARAM_VALUE (PARAM_PROFILE_FUNC_INTERNAL_ID)) |
| elt.ident = current_function_funcdef_no + 1; |
| else |
| { |
| gcc_assert (coverage_node_map_initialized_p ()); |
| elt.ident = cgraph_node::get (cfun->decl)->profile_id; |
| } |
| elt.ctr = counter; |
| entry = counts_hash->find (&elt); |
| if (!entry || !entry->summary.num) |
| /* The function was not emitted, or is weak and not chosen in the |
| final executable. Silently fail, because there's nothing we |
| can do about it. */ |
| return NULL; |
| |
| if (entry->cfg_checksum != cfg_checksum |
| || entry->summary.num != expected) |
| { |
| static int warned = 0; |
| bool warning_printed = false; |
| tree id = DECL_ASSEMBLER_NAME (current_function_decl); |
| |
| warning_printed = |
| warning_at (input_location, OPT_Wcoverage_mismatch, |
| "the control flow of function %qE does not match " |
| "its profile data (counter %qs)", id, ctr_names[counter]); |
| if (warning_printed && dump_enabled_p ()) |
| { |
| dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, input_location, |
| "use -Wno-error=coverage-mismatch to tolerate " |
| "the mismatch but performance may drop if the " |
| "function is hot\n"); |
| |
| if (!seen_error () |
| && !warned++) |
| { |
| dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, input_location, |
| "coverage mismatch ignored\n"); |
| dump_printf (MSG_OPTIMIZED_LOCATIONS, |
| flag_guess_branch_prob |
| ? G_("execution counts estimated\n") |
| : G_("execution counts assumed to be zero\n")); |
| if (!flag_guess_branch_prob) |
| dump_printf (MSG_OPTIMIZED_LOCATIONS, |
| "this can result in poorly optimized code\n"); |
| } |
| } |
| |
| return NULL; |
| } |
| else if (entry->lineno_checksum != lineno_checksum) |
| { |
| warning (OPT_Wcoverage_mismatch, |
| "source locations for function %qE have changed," |
| " the profile data may be out of date", |
| DECL_ASSEMBLER_NAME (current_function_decl)); |
| } |
| |
| if (summary) |
| *summary = &entry->summary; |
| |
| return entry->counts; |
| } |
| |
| /* Allocate NUM counters of type COUNTER. Returns nonzero if the |
| allocation succeeded. */ |
| |
| int |
| coverage_counter_alloc (unsigned counter, unsigned num) |
| { |
| if (no_coverage) |
| return 0; |
| |
| if (!num) |
| return 1; |
| |
| if (!fn_v_ctrs[counter]) |
| { |
| tree array_type = build_array_type (get_gcov_type (), NULL_TREE); |
| |
| fn_v_ctrs[counter] |
| = build_var (current_function_decl, array_type, counter); |
| } |
| |
| fn_b_ctrs[counter] = fn_n_ctrs[counter]; |
| fn_n_ctrs[counter] += num; |
| |
| fn_ctr_mask |= 1 << counter; |
| return 1; |
| } |
| |
| /* Generate a tree to access COUNTER NO. */ |
| |
| tree |
| tree_coverage_counter_ref (unsigned counter, unsigned no) |
| { |
| tree gcov_type_node = get_gcov_type (); |
| |
| gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); |
| |
| no += fn_b_ctrs[counter]; |
| |
| /* "no" here is an array index, scaled to bytes later. */ |
| return build4 (ARRAY_REF, gcov_type_node, fn_v_ctrs[counter], |
| build_int_cst (integer_type_node, no), NULL, NULL); |
| } |
| |
| /* Generate a tree to access the address of COUNTER NO. */ |
| |
| tree |
| tree_coverage_counter_addr (unsigned counter, unsigned no) |
| { |
| tree gcov_type_node = get_gcov_type (); |
| |
| gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]); |
| no += fn_b_ctrs[counter]; |
| |
| /* "no" here is an array index, scaled to bytes later. */ |
| return build_fold_addr_expr (build4 (ARRAY_REF, gcov_type_node, |
| fn_v_ctrs[counter], |
| build_int_cst (integer_type_node, no), |
| NULL, NULL)); |
| } |
| |
| |
| /* Generate a checksum for a string. CHKSUM is the current |
| checksum. */ |
| |
| static unsigned |
| coverage_checksum_string (unsigned chksum, const char *string) |
| { |
| int i; |
| char *dup = NULL; |
| |
| /* Look for everything that looks if it were produced by |
| get_file_function_name and zero out the second part |
| that may result from flag_random_seed. This is not critical |
| as the checksums are used only for sanity checking. */ |
| for (i = 0; string[i]; i++) |
| { |
| int offset = 0; |
| if (!strncmp (string + i, "_GLOBAL__N_", 11)) |
| offset = 11; |
| if (!strncmp (string + i, "_GLOBAL__", 9)) |
| offset = 9; |
| |
| /* C++ namespaces do have scheme: |
| _GLOBAL__N_<filename>_<wrongmagicnumber>_<magicnumber>functionname |
| since filename might contain extra underscores there seems |
| to be no better chance then walk all possible offsets looking |
| for magicnumber. */ |
| if (offset) |
| { |
| for (i = i + offset; string[i]; i++) |
| if (string[i]=='_') |
| { |
| int y; |
| |
| for (y = 1; y < 9; y++) |
| if (!(string[i + y] >= '0' && string[i + y] <= '9') |
| && !(string[i + y] >= 'A' && string[i + y] <= 'F')) |
| break; |
| if (y != 9 || string[i + 9] != '_') |
| continue; |
| for (y = 10; y < 18; y++) |
| if (!(string[i + y] >= '0' && string[i + y] <= '9') |
| && !(string[i + y] >= 'A' && string[i + y] <= 'F')) |
| break; |
| if (y != 18) |
| continue; |
| if (!dup) |
| string = dup = xstrdup (string); |
| for (y = 10; y < 18; y++) |
| dup[i + y] = '0'; |
| } |
| break; |
| } |
| } |
| |
| chksum = crc32_string (chksum, string); |
| free (dup); |
| |
| return chksum; |
| } |
| |
| /* Compute checksum for the current function. We generate a CRC32. */ |
| |
| unsigned |
| coverage_compute_lineno_checksum (void) |
| { |
| expanded_location xloc |
| = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); |
| unsigned chksum = xloc.line; |
| |
| if (xloc.file) |
| chksum = coverage_checksum_string (chksum, xloc.file); |
| chksum = coverage_checksum_string |
| (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl))); |
| |
| return chksum; |
| } |
| |
| /* Compute profile ID. This is better to be unique in whole program. */ |
| |
| unsigned |
| coverage_compute_profile_id (struct cgraph_node *n) |
| { |
| unsigned chksum; |
| |
| /* Externally visible symbols have unique name. */ |
| if (TREE_PUBLIC (n->decl) || DECL_EXTERNAL (n->decl) || n->unique_name) |
| { |
| chksum = coverage_checksum_string |
| (0, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); |
| } |
| else |
| { |
| expanded_location xloc |
| = expand_location (DECL_SOURCE_LOCATION (n->decl)); |
| bool use_name_only = (PARAM_VALUE (PARAM_PROFILE_FUNC_INTERNAL_ID) == 0); |
| |
| chksum = (use_name_only ? 0 : xloc.line); |
| if (xloc.file) |
| chksum = coverage_checksum_string (chksum, xloc.file); |
| chksum = coverage_checksum_string |
| (chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (n->decl))); |
| if (!use_name_only && first_global_object_name) |
| chksum = coverage_checksum_string |
| (chksum, first_global_object_name); |
| chksum = coverage_checksum_string |
| (chksum, aux_base_name); |
| } |
| |
| /* Non-negative integers are hopefully small enough to fit in all targets. |
| Gcov file formats wants non-zero function IDs. */ |
| chksum = chksum & 0x7fffffff; |
| return chksum + (!chksum); |
| } |
| |
| /* Compute cfg checksum for the function FN given as argument. |
| The checksum is calculated carefully so that |
| source code changes that doesn't affect the control flow graph |
| won't change the checksum. |
| This is to make the profile data useable across source code change. |
| The downside of this is that the compiler may use potentially |
| wrong profile data - that the source code change has non-trivial impact |
| on the validity of profile data (e.g. the reversed condition) |
| but the compiler won't detect the change and use the wrong profile data. */ |
| |
| unsigned |
| coverage_compute_cfg_checksum (struct function *fn) |
| { |
| basic_block bb; |
| unsigned chksum = n_basic_blocks_for_fn (fn); |
| |
| FOR_EACH_BB_FN (bb, fn) |
| { |
| edge e; |
| edge_iterator ei; |
| chksum = crc32_byte (chksum, bb->index); |
| FOR_EACH_EDGE (e, ei, bb->succs) |
| { |
| chksum = crc32_byte (chksum, e->dest->index); |
| } |
| } |
| |
| return chksum; |
| } |
| |
| /* Begin output to the notes file for the current function. |
| Writes the function header. Returns nonzero if data should be output. */ |
| |
| int |
| coverage_begin_function (unsigned lineno_checksum, unsigned cfg_checksum) |
| { |
| expanded_location xloc; |
| unsigned long offset; |
| |
| /* We don't need to output .gcno file unless we're under -ftest-coverage |
| (e.g. -fprofile-arcs/generate/use don't need .gcno to work). */ |
| if (no_coverage || !bbg_file_name) |
| return 0; |
| |
| xloc = expand_location (DECL_SOURCE_LOCATION (current_function_decl)); |
| |
| /* Announce function */ |
| offset = gcov_write_tag (GCOV_TAG_FUNCTION); |
| if (PARAM_VALUE (PARAM_PROFILE_FUNC_INTERNAL_ID)) |
| gcov_write_unsigned (current_function_funcdef_no + 1); |
| else |
| { |
| gcc_assert (coverage_node_map_initialized_p ()); |
| gcov_write_unsigned ( |
| cgraph_node::get (current_function_decl)->profile_id); |
| } |
| |
| gcov_write_unsigned (lineno_checksum); |
| gcov_write_unsigned (cfg_checksum); |
| gcov_write_string (IDENTIFIER_POINTER |
| (DECL_ASSEMBLER_NAME (current_function_decl))); |
| gcov_write_unsigned (DECL_ARTIFICIAL (current_function_decl)); |
| gcov_write_filename (xloc.file); |
| gcov_write_unsigned (xloc.line); |
| gcov_write_unsigned (xloc.column); |
| |
| expanded_location endloc = expand_location (cfun->function_end_locus); |
| |
| /* Function can start in a single file and end in another one. */ |
| gcov_write_unsigned (endloc.file == xloc.file ? endloc.line : xloc.line); |
| gcov_write_length (offset); |
| |
| return !gcov_is_error (); |
| } |
| |
| /* Finish coverage data for the current function. Verify no output |
| error has occurred. Save function coverage counts. */ |
| |
| void |
| coverage_end_function (unsigned lineno_checksum, unsigned cfg_checksum) |
| { |
| unsigned i; |
| |
| if (bbg_file_name && gcov_is_error ()) |
| { |
| warning (0, "error writing %qs", bbg_file_name); |
| unlink (bbg_file_name); |
| bbg_file_name = NULL; |
| } |
| |
| if (fn_ctr_mask) |
| { |
| struct coverage_data *item = 0; |
| |
| item = ggc_alloc<coverage_data> (); |
| |
| if (PARAM_VALUE (PARAM_PROFILE_FUNC_INTERNAL_ID)) |
| item->ident = current_function_funcdef_no + 1; |
| else |
| { |
| gcc_assert (coverage_node_map_initialized_p ()); |
| item->ident = cgraph_node::get (cfun->decl)->profile_id; |
| } |
| |
| item->lineno_checksum = lineno_checksum; |
| item->cfg_checksum = cfg_checksum; |
| |
| item->fn_decl = current_function_decl; |
| item->next = 0; |
| *functions_tail = item; |
| functions_tail = &item->next; |
| |
| for (i = 0; i != GCOV_COUNTERS; i++) |
| { |
| tree var = fn_v_ctrs[i]; |
| |
| if (item) |
| item->ctr_vars[i] = var; |
| if (var) |
| { |
| tree array_type = build_index_type (size_int (fn_n_ctrs[i] - 1)); |
| array_type = build_array_type (get_gcov_type (), array_type); |
| TREE_TYPE (var) = array_type; |
| DECL_SIZE (var) = TYPE_SIZE (array_type); |
| DECL_SIZE_UNIT (var) = TYPE_SIZE_UNIT (array_type); |
| varpool_node::finalize_decl (var); |
| } |
| |
| fn_b_ctrs[i] = fn_n_ctrs[i] = 0; |
| fn_v_ctrs[i] = NULL_TREE; |
| } |
| prg_ctr_mask |= fn_ctr_mask; |
| fn_ctr_mask = 0; |
| } |
| } |
| |
| /* Remove coverage file if opened. */ |
| |
| void |
| coverage_remove_note_file (void) |
| { |
| if (bbg_file_name) |
| { |
| gcov_close (); |
| unlink (bbg_file_name); |
| } |
| } |
| |
| /* Build a coverage variable of TYPE for function FN_DECL. If COUNTER |
| >= 0 it is a counter array, otherwise it is the function structure. */ |
| |
| static tree |
| build_var (tree fn_decl, tree type, int counter) |
| { |
| tree var = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, type); |
| const char *fn_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn_decl)); |
| char *buf; |
| size_t fn_name_len, len; |
| |
| fn_name = targetm.strip_name_encoding (fn_name); |
| fn_name_len = strlen (fn_name); |
| buf = XALLOCAVEC (char, fn_name_len + 8 + sizeof (int) * 3); |
| |
| if (counter < 0) |
| strcpy (buf, "__gcov__"); |
| else |
| sprintf (buf, "__gcov%u_", counter); |
| len = strlen (buf); |
| buf[len - 1] = symbol_table::symbol_suffix_separator (); |
| memcpy (buf + len, fn_name, fn_name_len + 1); |
| DECL_NAME (var) = get_identifier (buf); |
| TREE_STATIC (var) = 1; |
| TREE_ADDRESSABLE (var) = 1; |
| DECL_NONALIASED (var) = 1; |
| SET_DECL_ALIGN (var, TYPE_ALIGN (type)); |
| |
| return var; |
| } |
| |
| /* Creates the gcov_fn_info RECORD_TYPE. */ |
| |
| static void |
| build_fn_info_type (tree type, unsigned counters, tree gcov_info_type) |
| { |
| tree ctr_info = lang_hooks.types.make_type (RECORD_TYPE); |
| tree field, fields; |
| tree array_type; |
| |
| gcc_assert (counters); |
| |
| /* ctr_info::num */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| fields = field; |
| |
| /* ctr_info::values */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| build_pointer_type (get_gcov_type ())); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| finish_builtin_struct (ctr_info, "__gcov_ctr_info", fields, NULL_TREE); |
| |
| /* key */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| build_pointer_type (build_qualified_type |
| (gcov_info_type, TYPE_QUAL_CONST))); |
| fields = field; |
| |
| /* ident */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* lineno_checksum */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* cfg checksum */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| array_type = build_index_type (size_int (counters - 1)); |
| array_type = build_array_type (ctr_info, array_type); |
| |
| /* counters */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, array_type); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| finish_builtin_struct (type, "__gcov_fn_info", fields, NULL_TREE); |
| } |
| |
| /* Returns a CONSTRUCTOR for a gcov_fn_info. DATA is |
| the coverage data for the function and TYPE is the gcov_fn_info |
| RECORD_TYPE. KEY is the object file key. */ |
| |
| static tree |
| build_fn_info (const struct coverage_data *data, tree type, tree key) |
| { |
| tree fields = TYPE_FIELDS (type); |
| tree ctr_type; |
| unsigned ix; |
| vec<constructor_elt, va_gc> *v1 = NULL; |
| vec<constructor_elt, va_gc> *v2 = NULL; |
| |
| /* key */ |
| CONSTRUCTOR_APPEND_ELT (v1, fields, |
| build1 (ADDR_EXPR, TREE_TYPE (fields), key)); |
| fields = DECL_CHAIN (fields); |
| |
| /* ident */ |
| CONSTRUCTOR_APPEND_ELT (v1, fields, |
| build_int_cstu (get_gcov_unsigned_t (), |
| data->ident)); |
| fields = DECL_CHAIN (fields); |
| |
| /* lineno_checksum */ |
| CONSTRUCTOR_APPEND_ELT (v1, fields, |
| build_int_cstu (get_gcov_unsigned_t (), |
| data->lineno_checksum)); |
| fields = DECL_CHAIN (fields); |
| |
| /* cfg_checksum */ |
| CONSTRUCTOR_APPEND_ELT (v1, fields, |
| build_int_cstu (get_gcov_unsigned_t (), |
| data->cfg_checksum)); |
| fields = DECL_CHAIN (fields); |
| |
| /* counters */ |
| ctr_type = TREE_TYPE (TREE_TYPE (fields)); |
| for (ix = 0; ix != GCOV_COUNTERS; ix++) |
| if (prg_ctr_mask & (1 << ix)) |
| { |
| vec<constructor_elt, va_gc> *ctr = NULL; |
| tree var = data->ctr_vars[ix]; |
| unsigned count = 0; |
| |
| if (var) |
| count |
| = tree_to_shwi (TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (var)))) |
| + 1; |
| |
| CONSTRUCTOR_APPEND_ELT (ctr, TYPE_FIELDS (ctr_type), |
| build_int_cstu (get_gcov_unsigned_t (), |
| count)); |
| |
| if (var) |
| CONSTRUCTOR_APPEND_ELT (ctr, DECL_CHAIN (TYPE_FIELDS (ctr_type)), |
| build_fold_addr_expr (var)); |
| |
| CONSTRUCTOR_APPEND_ELT (v2, NULL, build_constructor (ctr_type, ctr)); |
| } |
| |
| CONSTRUCTOR_APPEND_ELT (v1, fields, |
| build_constructor (TREE_TYPE (fields), v2)); |
| |
| return build_constructor (type, v1); |
| } |
| |
| /* Create gcov_info struct. TYPE is the incomplete RECORD_TYPE to be |
| completed, and FN_INFO_PTR_TYPE is a pointer to the function info type. */ |
| |
| static void |
| build_info_type (tree type, tree fn_info_ptr_type) |
| { |
| tree field, fields = NULL_TREE; |
| tree merge_fn_type; |
| |
| /* Version ident */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* next pointer */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| build_pointer_type (build_qualified_type |
| (type, TYPE_QUAL_CONST))); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* stamp */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* Filename */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| build_pointer_type (build_qualified_type |
| (char_type_node, TYPE_QUAL_CONST))); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* merge fn array */ |
| merge_fn_type |
| = build_function_type_list (void_type_node, |
| build_pointer_type (get_gcov_type ()), |
| get_gcov_unsigned_t (), NULL_TREE); |
| merge_fn_type |
| = build_array_type (build_pointer_type (merge_fn_type), |
| build_index_type (size_int (GCOV_COUNTERS - 1))); |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| merge_fn_type); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* n_functions */ |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| get_gcov_unsigned_t ()); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| /* function_info pointer pointer */ |
| fn_info_ptr_type = build_pointer_type |
| (build_qualified_type (fn_info_ptr_type, TYPE_QUAL_CONST)); |
| field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, |
| fn_info_ptr_type); |
| DECL_CHAIN (field) = fields; |
| fields = field; |
| |
| finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE); |
| } |
| |
| /* Returns a CONSTRUCTOR for the gcov_info object. INFO_TYPE is the |
| gcov_info structure type, FN_ARY is the array of pointers to |
| function info objects. */ |
| |
| static tree |
| build_info (tree info_type, tree fn_ary) |
| { |
| tree info_fields = TYPE_FIELDS (info_type); |
| tree merge_fn_type, n_funcs; |
| unsigned ix; |
| tree filename_string; |
| int da_file_name_len; |
| vec<constructor_elt, va_gc> *v1 = NULL; |
| vec<constructor_elt, va_gc> *v2 = NULL; |
| |
| /* Version ident */ |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
| build_int_cstu (TREE_TYPE (info_fields), |
| GCOV_VERSION)); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* next -- NULL */ |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, null_pointer_node); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* stamp */ |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
| build_int_cstu (TREE_TYPE (info_fields), |
| bbg_file_stamp)); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* Filename */ |
| da_file_name_len = strlen (da_file_name); |
| filename_string = build_string (da_file_name_len + 1, da_file_name); |
| TREE_TYPE (filename_string) = build_array_type |
| (char_type_node, build_index_type (size_int (da_file_name_len))); |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
| build1 (ADDR_EXPR, TREE_TYPE (info_fields), |
| filename_string)); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* merge fn array -- NULL slots indicate unmeasured counters */ |
| merge_fn_type = TREE_TYPE (TREE_TYPE (info_fields)); |
| for (ix = 0; ix != GCOV_COUNTERS; ix++) |
| { |
| tree ptr = null_pointer_node; |
| |
| if ((1u << ix) & prg_ctr_mask) |
| { |
| tree merge_fn = build_decl (BUILTINS_LOCATION, |
| FUNCTION_DECL, |
| get_identifier (ctr_merge_functions[ix]), |
| TREE_TYPE (merge_fn_type)); |
| DECL_EXTERNAL (merge_fn) = 1; |
| TREE_PUBLIC (merge_fn) = 1; |
| DECL_ARTIFICIAL (merge_fn) = 1; |
| TREE_NOTHROW (merge_fn) = 1; |
| /* Initialize assembler name so we can stream out. */ |
| DECL_ASSEMBLER_NAME (merge_fn); |
| ptr = build1 (ADDR_EXPR, merge_fn_type, merge_fn); |
| } |
| CONSTRUCTOR_APPEND_ELT (v2, NULL, ptr); |
| } |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
| build_constructor (TREE_TYPE (info_fields), v2)); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* n_functions */ |
| n_funcs = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (fn_ary))); |
| n_funcs = fold_build2 (PLUS_EXPR, TREE_TYPE (info_fields), |
| n_funcs, size_one_node); |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, n_funcs); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| /* functions */ |
| CONSTRUCTOR_APPEND_ELT (v1, info_fields, |
| build1 (ADDR_EXPR, TREE_TYPE (info_fields), fn_ary)); |
| info_fields = DECL_CHAIN (info_fields); |
| |
| gcc_assert (!info_fields); |
| return build_constructor (info_type, v1); |
| } |
| |
| /* Generate the constructor function to call __gcov_init. */ |
| |
| static void |
| build_init_ctor (tree gcov_info_type) |
| { |
| tree ctor, stmt, init_fn; |
| |
| /* Build a decl for __gcov_init. */ |
| init_fn = build_pointer_type (gcov_info_type); |
| init_fn = build_function_type_list (void_type_node, init_fn, NULL); |
| init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, |
| get_identifier ("__gcov_init"), init_fn); |
| TREE_PUBLIC (init_fn) = 1; |
| DECL_EXTERNAL (init_fn) = 1; |
| DECL_ASSEMBLER_NAME (init_fn); |
| |
| /* Generate a call to __gcov_init(&gcov_info). */ |
| ctor = NULL; |
| stmt = build_fold_addr_expr (gcov_info_var); |
| stmt = build_call_expr (init_fn, 1, stmt); |
| append_to_statement_list (stmt, &ctor); |
| |
| /* Generate a constructor to run it. */ |
| int priority = SUPPORTS_INIT_PRIORITY |
| ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; |
| cgraph_build_static_cdtor ('I', ctor, priority); |
| } |
| |
| /* Generate the destructor function to call __gcov_exit. */ |
| |
| static void |
| build_gcov_exit_decl (void) |
| { |
| tree init_fn = build_function_type_list (void_type_node, void_type_node, |
| NULL); |
| init_fn = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, |
| get_identifier ("__gcov_exit"), init_fn); |
| TREE_PUBLIC (init_fn) = 1; |
| DECL_EXTERNAL (init_fn) = 1; |
| DECL_ASSEMBLER_NAME (init_fn); |
| |
| /* Generate a call to __gcov_exit (). */ |
| tree dtor = NULL; |
| tree stmt = build_call_expr (init_fn, 0); |
| append_to_statement_list (stmt, &dtor); |
| |
| /* Generate a destructor to run it. */ |
| int priority = SUPPORTS_INIT_PRIORITY |
| ? MAX_RESERVED_INIT_PRIORITY: DEFAULT_INIT_PRIORITY; |
| |
| cgraph_build_static_cdtor ('D', dtor, priority); |
| } |
| |
| /* Create the gcov_info types and object. Generate the constructor |
| function to call __gcov_init. Does not generate the initializer |
| for the object. Returns TRUE if coverage data is being emitted. */ |
| |
| static bool |
| coverage_obj_init (void) |
| { |
| tree gcov_info_type; |
| unsigned n_counters = 0; |
| unsigned ix; |
| struct coverage_data *fn; |
| struct coverage_data **fn_prev; |
| char name_buf[32]; |
| |
| no_coverage = 1; /* Disable any further coverage. */ |
| |
| if (!prg_ctr_mask) |
| return false; |
| |
| if (symtab->dump_file) |
| fprintf (symtab->dump_file, "Using data file %s\n", da_file_name); |
| |
| /* Prune functions. */ |
| for (fn_prev = &functions_head; (fn = *fn_prev);) |
| if (DECL_STRUCT_FUNCTION (fn->fn_decl)) |
| fn_prev = &fn->next; |
| else |
| /* The function is not being emitted, remove from list. */ |
| *fn_prev = fn->next; |
| |
| if (functions_head == NULL) |
| return false; |
| |
| for (ix = 0; ix != GCOV_COUNTERS; ix++) |
| if ((1u << ix) & prg_ctr_mask) |
| n_counters++; |
| |
| /* Build the info and fn_info types. These are mutually recursive. */ |
| gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); |
| gcov_fn_info_type = lang_hooks.types.make_type (RECORD_TYPE); |
| build_fn_info_type (gcov_fn_info_type, n_counters, gcov_info_type); |
| gcov_info_type = lang_hooks.types.make_type (RECORD_TYPE); |
| gcov_fn_info_ptr_type = build_pointer_type |
| (build_qualified_type (gcov_fn_info_type, TYPE_QUAL_CONST)); |
| build_info_type (gcov_info_type, gcov_fn_info_ptr_type); |
| |
| /* Build the gcov info var, this is referred to in its own |
| initializer. */ |
| gcov_info_var = build_decl (BUILTINS_LOCATION, |
| VAR_DECL, NULL_TREE, gcov_info_type); |
| TREE_STATIC (gcov_info_var) = 1; |
| ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 0); |
| DECL_NAME (gcov_info_var) = get_identifier (name_buf); |
| |
| build_init_ctor (gcov_info_type); |
| build_gcov_exit_decl (); |
| |
| return true; |
| } |
| |
| /* Generate the coverage function info for FN and DATA. Append a |
| pointer to that object to CTOR and return the appended CTOR. */ |
| |
| static vec<constructor_elt, va_gc> * |
| coverage_obj_fn (vec<constructor_elt, va_gc> *ctor, tree fn, |
| struct coverage_data const *data) |
| { |
| tree init = build_fn_info (data, gcov_fn_info_type, gcov_info_var); |
| tree var = build_var (fn, gcov_fn_info_type, -1); |
| |
| DECL_INITIAL (var) = init; |
| varpool_node::finalize_decl (var); |
| |
| CONSTRUCTOR_APPEND_ELT (ctor, NULL, |
| build1 (ADDR_EXPR, gcov_fn_info_ptr_type, var)); |
| return ctor; |
| } |
| |
| /* Finalize the coverage data. Generates the array of pointers to |
| function objects from CTOR. Generate the gcov_info initializer. */ |
| |
| static void |
| coverage_obj_finish (vec<constructor_elt, va_gc> *ctor) |
| { |
| unsigned n_functions = vec_safe_length (ctor); |
| tree fn_info_ary_type = build_array_type |
| (build_qualified_type (gcov_fn_info_ptr_type, TYPE_QUAL_CONST), |
| build_index_type (size_int (n_functions - 1))); |
| tree fn_info_ary = build_decl (BUILTINS_LOCATION, VAR_DECL, NULL_TREE, |
| fn_info_ary_type); |
| char name_buf[32]; |
| |
| TREE_STATIC (fn_info_ary) = 1; |
| ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 1); |
| DECL_NAME (fn_info_ary) = get_identifier (name_buf); |
| DECL_INITIAL (fn_info_ary) = build_constructor (fn_info_ary_type, ctor); |
| varpool_node::finalize_decl (fn_info_ary); |
| |
| DECL_INITIAL (gcov_info_var) |
| = build_info (TREE_TYPE (gcov_info_var), fn_info_ary); |
| varpool_node::finalize_decl (gcov_info_var); |
| } |
| |
| /* Perform file-level initialization. Read in data file, generate name |
| of notes file. */ |
| |
| void |
| coverage_init (const char *filename) |
| { |
| int len = strlen (filename); |
| int prefix_len = 0; |
| |
| /* Since coverage_init is invoked very early, before the pass |
| manager, we need to set up the dumping explicitly. This is |
| similar to the handling in finish_optimization_passes. */ |
| int profile_pass_num = |
| g->get_passes ()->get_pass_profile ()->static_pass_number; |
| g->get_dumps ()->dump_start (profile_pass_num, NULL); |
| |
| if (!profile_data_prefix && !IS_ABSOLUTE_PATH (filename)) |
| profile_data_prefix = getpwd (); |
| |
| if (profile_data_prefix) |
| prefix_len = strlen (profile_data_prefix); |
| |
| /* Name of da file. */ |
| da_file_name = XNEWVEC (char, len + strlen (GCOV_DATA_SUFFIX) |
| + prefix_len + 2); |
| |
| if (profile_data_prefix) |
| { |
| memcpy (da_file_name, profile_data_prefix, prefix_len); |
| da_file_name[prefix_len++] = '/'; |
| } |
| memcpy (da_file_name + prefix_len, filename, len); |
| strcpy (da_file_name + prefix_len + len, GCOV_DATA_SUFFIX); |
| |
| bbg_file_stamp = local_tick; |
| |
| if (flag_auto_profile) |
| read_autofdo_file (); |
| else if (flag_branch_probabilities) |
| read_counts_file (); |
| |
| /* Name of bbg file. */ |
| if (flag_test_coverage && !flag_compare_debug) |
| { |
| bbg_file_name = XNEWVEC (char, len + strlen (GCOV_NOTE_SUFFIX) + 1); |
| memcpy (bbg_file_name, filename, len); |
| strcpy (bbg_file_name + len, GCOV_NOTE_SUFFIX); |
| |
| if (!gcov_open (bbg_file_name, -1)) |
| { |
| error ("cannot open %s", bbg_file_name); |
| bbg_file_name = NULL; |
| } |
| else |
| { |
| gcov_write_unsigned (GCOV_NOTE_MAGIC); |
| gcov_write_unsigned (GCOV_VERSION); |
| gcov_write_unsigned (bbg_file_stamp); |
| |
| /* Do not support has_unexecuted_blocks for Ada. */ |
| gcov_write_unsigned (strcmp (lang_hooks.name, "GNU Ada") != 0); |
| } |
| } |
| |
| g->get_dumps ()->dump_finish (profile_pass_num); |
| } |
| |
| /* Performs file-level cleanup. Close notes file, generate coverage |
| variables and constructor. */ |
| |
| void |
| coverage_finish (void) |
| { |
| if (bbg_file_name && gcov_close ()) |
| unlink (bbg_file_name); |
| |
| if (!flag_branch_probabilities && flag_test_coverage |
| && (!local_tick || local_tick == (unsigned)-1)) |
| /* Only remove the da file, if we're emitting coverage code and |
| cannot uniquely stamp it. If we can stamp it, libgcov will DTRT. */ |
| unlink (da_file_name); |
| |
| if (coverage_obj_init ()) |
| { |
| vec<constructor_elt, va_gc> *fn_ctor = NULL; |
| struct coverage_data *fn; |
| |
| for (fn = functions_head; fn; fn = fn->next) |
| fn_ctor = coverage_obj_fn (fn_ctor, fn->fn_decl, fn); |
| coverage_obj_finish (fn_ctor); |
| } |
| |
| XDELETEVEC (da_file_name); |
| da_file_name = NULL; |
| } |
| |
| #include "gt-coverage.h" |