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ipa-utils.c (ipa_merge_profiles): Do no merging when source function has zero count. 

* ipa-utils.c (ipa_merge_profiles): Do no merging when source function
	has zero count.

From-SVN: r267174
This commit is contained in:
Jan Hubicka 2018-12-15 22:04:29 +01:00 committed by Jan Hubicka
parent 305f1fb783
commit 6263c29d28
2 changed files with 9 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2018-12-15 Jan Hubicka <hubicka@ucw.cz>
* ipa-utils.c (ipa_merge_profiles): Do no merging when source function
has zero count.
2018-12-15 Jakub Jelinek <jakub@redhat.com> 2018-12-15 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/88464 PR tree-optimization/88464

4
gcc/ipa-utils.c
View File

@ -402,6 +402,10 @@ ipa_merge_profiles (struct cgraph_node *dst,
if (src->profile_id && !dst->profile_id) if (src->profile_id && !dst->profile_id)
dst->profile_id = src->profile_id; dst->profile_id = src->profile_id;
/* Merging zero profile to dst is no-op. */
if (src->count.ipa () == profile_count::zero ())
return;
/* FIXME when we merge in unknown profile, we ought to set counts as /* FIXME when we merge in unknown profile, we ought to set counts as
unsafe. */ unsafe. */
if (!src->count.initialized_p () if (!src->count.initialized_p ()