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[Bug tree-optimization/52019] [4.7 Regression] tree-ssa/ipa-split-5.c fails with -fno-tree-sra because of CLOBBERS
- From: "rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 22 Feb 2012 10:16:01 +0000
- Subject: [Bug tree-optimization/52019] [4.7 Regression] tree-ssa/ipa-split-5.c fails with -fno-tree-sra because of CLOBBERS
- Auto-submitted: auto-generated
- References: <bug-52019-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52019
--- Comment #2 from rguenther at suse dot de <rguenther at suse dot de> 2012-02-22 10:16:01 UTC ---
On Wed, 22 Feb 2012, jakub at gcc dot gnu.org wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52019
>
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jakub at gcc dot gnu.org
>
> --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-22 10:11:28 UTC ---
> Shouldn't IPA split just ignore clobbers when deciding whether to split?
> Then obviously it needs to handle them somehow, but IMHO the decision shouldn't
> take them into account.
Yes. The question is how exactly ... the idea was that dropping them
(for 'unused' vars) would be appropriate.
Richard.