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[Bug tree-optimization/55334] [4.8 Regression] mgrid regression (ipa-cp disables vectorization)
- From: "hubicka at ucw dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 21 Dec 2012 14:22:28 +0000
- Subject: [Bug tree-optimization/55334] [4.8 Regression] mgrid regression (ipa-cp disables vectorization)
- Auto-submitted: auto-generated
- References: <bug-55334-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #22 from Jan Hubicka <hubicka at ucw dot cz> 2012-12-21 14:22:28 UTC ---
> There would be if we had ADD_RESTRICT or something similar. But we don't right
> now, so supposedly it would be better to avoid such IPA-CP changes if it
> removes restrict for now.
We would also have to disable inlining of functions with restrict parameters
(in mgrid case now both ipa-cp and inliner makes the regressions). I am not
quite sure it is desirable behaviour.
Honza