profile-count.c (profile_count::combine_with_ipa_count): Handle zeros correctly.

	* profile-count.c (profile_count::combine_with_ipa_count): Handle
	zeros correctly.

From-SVN: r257182

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7be83e9930d4d62803fdff2f58df87ef079cf6a9..f20ec74acbdac426ee8746399e8cdb3b9401bbed 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-30  Jan Hubicka  <hubicka@ucw.cz>
+
+       * profile-count.c (profile_count::combine_with_ipa_count): Handle
+       zeros correctly.
+
 2018-01-30  Richard Biener  <rguenther@suse.de>
 
        PR tree-optimization/83008

diff --git a/gcc/profile-count.c b/gcc/profile-count.c
index c3b115f0b81c96b4456af77ff24cb1043a95dcbb..3d411cfbfb366914a0a189b1ccbe5f353cf78567 100644 (file)
--- a/gcc/profile-count.c
+++ b/gcc/profile-count.c
@@ -321,7 +321,7 @@ profile_count::combine_with_ipa_count (profile_count ipa)
   ipa = ipa.ipa ();
   if (ipa.nonzero_p ())
     return ipa;
-  if (!ipa.initialized_p ())
+  if (!ipa.initialized_p () || *this == profile_count::zero ())
     return *this;
   if (ipa == profile_count::zero ())
     return this->global0 ();