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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2021-09-13 19:49:49 +0200 |
|---|---|---|
| committer | Thomas Koenig <tkoenig@gcc.gnu.org> | 2021-09-13 19:49:49 +0200 |
| commit | b18a97e5dd0935e1c4a626c230f21457d0aad3d5 (patch) | |
| tree | c1818f41af6fe780deafb6cd6a183f32085fe654 /gcc/value-prof.c | |
| parent | e76a53644c9d70e998c0d050e9a456af388c6b61 (diff) | |
| download | gcc-b18a97e5dd0935e1c4a626c230f21457d0aad3d5.zip gcc-b18a97e5dd0935e1c4a626c230f21457d0aad3d5.tar.gz gcc-b18a97e5dd0935e1c4a626c230f21457d0aad3d5.tar.bz2 | |
Merged current trunk to branch.
Diffstat (limited to 'gcc/value-prof.c')
| -rw-r--r-- | gcc/value-prof.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/gcc/value-prof.c b/gcc/value-prof.c index db4fb8a..4274877 100644 --- a/gcc/value-prof.c +++ b/gcc/value-prof.c @@ -1,5 +1,5 @@ /* Transformations based on profile information for values. - Copyright (C) 2003-2020 Free Software Foundation, Inc. + Copyright (C) 2003-2021 Free Software Foundation, Inc. This file is part of GCC. @@ -747,8 +747,8 @@ gimple_divmod_fixed_value (gassign *stmt, tree value, profile_probability prob, abs (counters[0]) is the number of executions for i in 0 ... TOPN-1 - counters[2 * i + 1] is target - abs (counters[2 * i + 2]) is corresponding hitrate counter. + counters[2 * i + 2] is target + counters[2 * i + 3] is corresponding hitrate counter. Value of counters[0] negative when counter became full during merging and some values are lost. */ @@ -766,15 +766,29 @@ get_nth_most_common_value (gimple *stmt, const char *counter_type, *value = 0; gcov_type read_all = abs_hwi (hist->hvalue.counters[0]); + gcov_type covered = 0; + for (unsigned i = 0; i < counters; ++i) + covered += hist->hvalue.counters[2 * i + 3]; gcov_type v = hist->hvalue.counters[2 * n + 2]; gcov_type c = hist->hvalue.counters[2 * n + 3]; if (hist->hvalue.counters[0] < 0 - && (flag_profile_reproducible == PROFILE_REPRODUCIBILITY_PARALLEL_RUNS - || (flag_profile_reproducible - == PROFILE_REPRODUCIBILITY_MULTITHREADED))) - return false; + && flag_profile_reproducible == PROFILE_REPRODUCIBILITY_PARALLEL_RUNS) + { + if (dump_file) + fprintf (dump_file, "Histogram value dropped in '%s' mode\n", + "-fprofile-reproducible=parallel-runs"); + return false; + } + else if (covered != read_all + && flag_profile_reproducible == PROFILE_REPRODUCIBILITY_MULTITHREADED) + { + if (dump_file) + fprintf (dump_file, "Histogram value dropped in '%s' mode\n", + "-fprofile-reproducible=multithreaded"); + return false; + } /* Indirect calls can't be verified. */ if (stmt |