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[Bug tree-optimization/61747] min,max pattern not always properly optimized (for sse4 targets)
- From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 08 Jul 2014 15:21:05 +0000
- Subject: [Bug tree-optimization/61747] min,max pattern not always properly optimized (for sse4 targets)
- Auto-submitted: auto-generated
- References: <bug-61747-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61747
--- Comment #2 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
> I think you need -fno-signed-zeros for the transformation to be valid.
possible.
but then is the O2 code that is wrong?
in any case adding -fno-signed-zeros makes no difference w/r/t O2 alone