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| author | Martin Liska <mliska@suse.cz> | 2020-01-22 12:08:11 +0100 |
|---|---|---|
| committer | Martin Liska <mliska@suse.cz> | 2020-01-22 12:08:11 +0100 |
| commit | 5f32f9cf13f99f6295591927950aaf98aa8dba91 (patch) | |
| tree | 59ab45c6e2d886178d1ca9e17317ffdc1c043c31 /gcc/profile.c | |
| parent | f96af171bee93486896407ccad0e1e4dc200bc0c (diff) | |
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Smart relaxation of TOP N counter.
PR tree-optimization/92924
* profile.c (compute_value_histograms): Divide
all counter values.
PR tree-optimization/92924
* libgcov-driver.c (prune_topn_counter): New.
(prune_counters): Likewise.
(dump_one_gcov): Prune a run-time counter.
* libgcov-profiler.c (__gcov_topn_values_profiler_body):
For a known value, add GCOV_TOPN_VALUES to value.
Otherwise, decrement all counters by one.
Diffstat (limited to 'gcc/profile.c')
| -rw-r--r-- | gcc/profile.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/profile.c b/gcc/profile.c index 6a2de21..cd754c4 100644 --- a/gcc/profile.c +++ b/gcc/profile.c @@ -863,7 +863,15 @@ compute_value_histograms (histogram_values values, unsigned cfg_checksum, if (hist->type == HIST_TYPE_TOPN_VALUES || hist->type == HIST_TYPE_INDIR_CALL) - sort_hist_values (hist); + { + /* Each count value is multiplied by GCOV_TOPN_VALUES. */ + if (hist->hvalue.counters[2] != -1) + for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++) + hist->hvalue.counters[2 * i + 2] + = RDIV (hist->hvalue.counters[2 * i + 2], GCOV_TOPN_VALUES); + + sort_hist_values (hist); + } /* Time profiler counter is not related to any statement, so that we have to read the counter and set the value to |