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[Bug c/38922] [4.3 Regression] Optimization regression in simple conditional code (js instead of cmov) 4.3 vs 4.1 and 3.4
- From: "vincenzo dot innocente at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 Jan 2009 09:24:28 -0000
- Subject: [Bug c/38922] [4.3 Regression] Optimization regression in simple conditional code (js instead of cmov) 4.3 vs 4.1 and 3.4
- References: <bug-38922-16413@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from vincenzo dot innocente at cern dot ch 2009-01-20 09:24 -------
I confirm that gcc 4.2.3 is as fast as 4.1 and at least twice as slow of gcc
4.3.2
test done on an intel core2 running RHL4 and core i7 with RHL5.
mtune either generic or native (no difference)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38922