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author | Martin Liska <mliska@suse.cz> | 2017-04-28 14:51:05 +0200 |
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committer | Martin Liska <marxin@gcc.gnu.org> | 2017-04-28 12:51:05 +0000 |
commit | 6e49961ce47b8c554ff6081ef95a68a0616f0a93 (patch) | |
tree | 581504fe21555bdbe3723111eb739d6cdc3e53ce /gcc/gcov.c | |
parent | 9b9d6370d48146a0dd8ed327ecdbfc9273abf91a (diff) | |
download | gcc-6e49961ce47b8c554ff6081ef95a68a0616f0a93.zip gcc-6e49961ce47b8c554ff6081ef95a68a0616f0a93.tar.gz gcc-6e49961ce47b8c554ff6081ef95a68a0616f0a93.tar.bz2 |
Make gcno more precise about BBs really belonging to a line (PR gcov-profile/79891).
2017-04-28 Martin Liska <mliska@suse.cz>
PR gcov-profile/79891
* gcov.c (add_line_counts): Assign BBs to lines just if the BB
is marked by compiler as living on a line.
(get_cycles_count): Remove usage of the union.
(output_intermediate_file): Likewise.
(find_source): Fix GNU coding style.
(accumulate_line_counts): Remove old non-all block mode.
(output_lines): Remove usage of the union.
* profile.c (output_location): Include all BBs, even if
belonging to a same line (and file) as a previous BB.
2017-04-28 Martin Liska <mliska@suse.cz>
PR gcov-profile/79891
* gcc.misc-tests/gcov-17.c: New test.
* gcc.misc-tests/gcov-18.c: New test.
From-SVN: r247374
Diffstat (limited to 'gcc/gcov.c')
-rw-r--r-- | gcc/gcov.c | 90 |
1 files changed, 33 insertions, 57 deletions
@@ -238,14 +238,9 @@ typedef struct line_info bool has_block (block_t *needle); gcov_type count; /* execution count */ - union - { - arc_t *branches; /* branches from blocks that end on this - line. Used for branch-counts when not - all-blocks mode. */ - block_t *blocks; /* blocks which start on this line. Used - in all-blocks mode. */ - } u; + arc_t *branches; /* branches from blocks that end on this line. */ + block_t *blocks; /* blocks which start on this line. + Used in all-blocks mode. */ unsigned exists : 1; unsigned unexceptional : 1; } line_t; @@ -253,7 +248,7 @@ typedef struct line_info bool line_t::has_block (block_t *needle) { - for (block_t *n = u.blocks; n; n = n->chain) + for (block_t *n = blocks; n; n = n->chain) if (n == needle) return true; @@ -608,7 +603,7 @@ get_cycles_count (line_t &linfo, bool handle_negative_cycles = true) loop_type result = NO_LOOP; gcov_type count = 0; - for (block_t *block = linfo.u.blocks; block; block = block->chain) + for (block_t *block = linfo.blocks; block; block = block->chain) { arc_vector_t path; block_vector_t blocked; @@ -886,7 +881,7 @@ output_intermediate_file (FILE *gcov_file, source_t *src) fprintf (gcov_file, "lcount:%u,%s\n", line_num, format_gcov (line->count, 0, -1)); if (flag_branches) - for (arc = line->u.branches; arc; arc = arc->line_next) + for (arc = line->branches; arc; arc = arc->line_next) { if (!arc->is_unconditional && !arc->is_call_non_return) { @@ -1279,7 +1274,7 @@ find_source (const char *file_name) /* Resort the name map. */ qsort (names, n_names, sizeof (*names), name_sort); - + check_date: if (sources[idx].file_time > bbg_file_time) { @@ -2239,13 +2234,11 @@ mangle_name (char const *base, char *ptr) static void add_line_counts (coverage_t *coverage, function_t *fn) { - unsigned ix; - line_t *line = NULL; /* This is propagated from one iteration to the - next. */ - + bool has_any_line = false; /* Scan each basic block. */ - for (ix = 0; ix != fn->blocks.size (); ix++) + for (unsigned ix = 0; ix != fn->blocks.size (); ix++) { + line_t *line = NULL; block_t *block = &fn->blocks[ix]; if (block->count && ix && ix + 1 != fn->blocks.size ()) fn->blocks_executed++; @@ -2272,33 +2265,31 @@ add_line_counts (coverage_t *coverage, function_t *fn) } block->cycle.arc = NULL; block->cycle.ident = ~0U; + has_any_line = true; if (!ix || ix + 1 == fn->blocks.size ()) /* Entry or exit block */; - else if (flag_all_blocks) + else if (line != NULL) { - line_t *block_line = line; - - if (!block_line) - block_line = &sources[fn->src].lines[fn->line]; + block->chain = line->blocks; + line->blocks = block; - block->chain = block_line->u.blocks; - block_line->u.blocks = block; - } - else if (flag_branches) - { - arc_t *arc; - - for (arc = block->succ; arc; arc = arc->succ_next) + if (flag_branches) { - arc->line_next = line->u.branches; - line->u.branches = arc; - if (coverage && !arc->is_unconditional) - add_branch_counts (coverage, arc); + arc_t *arc; + + for (arc = block->succ; arc; arc = arc->succ_next) + { + arc->line_next = line->branches; + line->branches = arc; + if (coverage && !arc->is_unconditional) + add_branch_counts (coverage, arc); + } } } } - if (!line) + + if (!has_any_line) fnotice (stderr, "%s:no lines for '%s'\n", bbg_file_name, fn->name); } @@ -2321,22 +2312,7 @@ accumulate_line_counts (source_t *src) for (ix = src->num_lines, line = src->lines; ix--; line++) { - if (!flag_all_blocks) - { - arc_t *arc, *arc_p, *arc_n; - - /* Total and reverse the branch information. */ - for (arc = line->u.branches, arc_p = NULL; arc; - arc_p = arc, arc = arc_n) - { - arc_n = arc->line_next; - arc->line_next = arc_p; - - add_branch_counts (&src->coverage, arc); - } - line->u.branches = arc_p; - } - else if (line->u.blocks) + if (line->blocks) { /* The user expects the line count to be the number of times a line has been executed. Simply summing the block count @@ -2348,17 +2324,17 @@ accumulate_line_counts (source_t *src) gcov_type count = 0; /* Reverse the block information. */ - for (block = line->u.blocks, block_p = NULL; block; + for (block = line->blocks, block_p = NULL; block; block_p = block, block = block_n) { block_n = block->chain; block->chain = block_p; block->cycle.ident = ix; } - line->u.blocks = block_p; + line->blocks = block_p; /* Sum the entry arcs. */ - for (block = line->u.blocks; block; block = block->chain) + for (block = line->blocks; block; block = block->chain) { arc_t *arc; @@ -2368,7 +2344,7 @@ accumulate_line_counts (source_t *src) } /* Cycle detection. */ - for (block = line->u.blocks; block; block = block->chain) + for (block = line->blocks; block; block = block->chain) { for (arc_t *arc = block->pred; arc; arc = arc->pred_next) if (!line->has_block (arc->src)) @@ -2554,7 +2530,7 @@ output_lines (FILE *gcov_file, const source_t *src) arc_t *arc; int ix, jx; - for (ix = jx = 0, block = line->u.blocks; block; + for (ix = jx = 0, block = line->blocks; block; block = block->chain) { if (!block->is_call_return) @@ -2578,7 +2554,7 @@ output_lines (FILE *gcov_file, const source_t *src) int ix; arc_t *arc; - for (ix = 0, arc = line->u.branches; arc; arc = arc->line_next) + for (ix = 0, arc = line->branches; arc; arc = arc->line_next) ix += output_branch_count (gcov_file, ix, arc); } } |