diff options
Diffstat (limited to 'gcc/profile-count.cc')
| -rw-r--r-- | gcc/profile-count.cc | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/gcc/profile-count.cc b/gcc/profile-count.cc index 374f06f..2d9c778 100644 --- a/gcc/profile-count.cc +++ b/gcc/profile-count.cc @@ -364,8 +364,12 @@ profile_count::adjust_for_ipa_scaling (profile_count *num, /* Scaling to zero is always zero. */ if (*num == zero ()) return; - /* If den is non-zero we are safe. */ - if (den->force_nonzero () == *den) + /* If den is non-zero we are safe. + However take care of zeros in AFDO profiles since + they simply means that no useful samples were collected. + Called function still may contain important loop. */ + if (den->force_nonzero () == *den + && num->quality () != AFDO) return; /* Force both to non-zero so we do not push profiles to 0 when both num == 0 and den == 0. */ @@ -417,17 +421,17 @@ profile_count::combine_with_ipa_count_within (profile_count ipa, profile_count profile_count::from_gcov_type (gcov_type v, profile_quality quality) - { - profile_count ret; - gcc_checking_assert (v >= 0); - if (dump_file && v >= (gcov_type)max_count) - fprintf (dump_file, - "Capping gcov count %" PRId64 " to max_count %" PRId64 "\n", - (int64_t) v, (int64_t) max_count); - ret.m_val = MIN (v, (gcov_type)max_count); - ret.m_quality = quality; - return ret; - } +{ + profile_count ret; + gcc_checking_assert (v >= 0); + if (dump_file && v >= (gcov_type)max_count) + fprintf (dump_file, + "Capping gcov count %" PRId64 " to max_count %" PRId64 "\n", + (int64_t) v, (int64_t) max_count); + ret.m_val = MIN (v, (gcov_type)max_count); + ret.m_quality = quality; + return ret; +} /* COUNT1 times event happens with *THIS probability, COUNT2 times OTHER happens with COUNT2 probability. Return probability that either *THIS or |