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[Bug other/47167] Performance regression in numerical code
- From: "martin at mpa-garching dot mpg dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 19 Jan 2011 14:16:20 +0000
- Subject: [Bug other/47167] Performance regression in numerical code
- Auto-submitted: auto-generated
- References: <bug-47167-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47167
--- Comment #7 from Martin Reinecke <martin@mpa-garching.mpg.de> 2011-01-19 14:16:18 UTC ---
OK, I located the problematic commit, at least on the 4.5 branch: it's revision
number 167492 (fix for PR tree-optimization/46806).
Between revisions 167491 and 167492 the CPU time for the testcase2.c jumps from
4.7s to 5.4s.
Do you think that anything can be done about this regression?