[Bug gcov-profile/55674] [4.8 Regression] >20% size increase of lto/pgo binaries since r193747

[markus at trippelsdorf dot de]

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