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[Bug gcov-profile/55674] [4.8 Regression] >20% size increase of lto/pgo binaries since r193747
- From: "markus at trippelsdorf dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 13 Dec 2012 14:46:31 +0000
- Subject: [Bug gcov-profile/55674] [4.8 Regression] >20% size increase of lto/pgo binaries since r193747
- Auto-submitted: auto-generated
- References: <bug-55674-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55674
--- Comment #2 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-12-13 14:46:31 UTC ---
In the tramp3d-v4 case, when I run with this simple debug patch:
diff --git a/gcc/predict.c b/gcc/predict.c
index 5d3de29..bf3a259 100644
--- a/gcc/predict.c
+++ b/gcc/predict.c
@@ -147,6 +147,7 @@ maybe_hot_count_p (struct function *fun, gcov_type count)
gcc_assert (ws);
min_count = ws->min_counter;
}
+ fprintf (stderr, "count=%i min_count=%i profile_info->sum_max=%i\n", count,
min_count, profile_info->sum_max);
return (count >= min_count);
}
it shows that in the middle of the output, min_count changes from
8585 to 0:
... ~600000 similar lines with min_count=8585
count=3 min_count=8585 profile_info->sum_max=257406300
count=3 min_count=8585 profile_info->sum_max=257406300
count=3 min_count=8585 profile_info->sum_max=257406300
count=3 min_count=8585 profile_info->sum_max=257406300
count=40 min_count=0 profile_info->sum_max=257406300
count=61 min_count=0 profile_info->sum_max=257406300
count=40 min_count=0 profile_info->sum_max=257406300
count=40 min_count=0 profile_info->sum_max=257406300
... ~600000 similar lines with min_count=0