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[Bug tree-optimization/45685] [4.6/4.7/4.8 Regression] missed conditional move opportunity in loop
- From: "steven at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 13 Mar 2013 20:45:30 +0000
- Subject: [Bug tree-optimization/45685] [4.6/4.7/4.8 Regression] missed conditional move opportunity in loop
- Auto-submitted: auto-generated
- References: <bug-45685-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45685
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |steven at gcc dot gnu.org
--- Comment #24 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-13 20:45:30 UTC ---
(In reply to comment #19)
> I did some runtime testing on this shortly after 4.7 stage1 opened; the
> net result was actually a regression. I didn't delve into why due to
> time constraints.
>
> Without analysis as to why the patch regressed spec, I wouldn't be
> comfortable suggesting it for any stage.
Still looks like an interesting approach, tho'.
Do you plan to have a look at this for GCC 4.9?