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[Bug middle-end/33966] New: Revision 129625 caused 1% slowdown on 200.sixtrack
- From: "hjl at lucon dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Nov 2007 04:25:57 -0000
- Subject: [Bug middle-end/33966] New: Revision 129625 caused 1% slowdown on 200.sixtrack
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
Revision 129625
http://gcc.gnu.org/ml/gcc-cvs/2007-10/msg00730.html
caused 11% drop in performance for 200.sixtrack in SPEC CPU 2000
with -O2 -ffast-math on Core 2 Duo 64bit. That patch caused very
different codes generated for 200.sixtrack on x86-64.
--
Summary: Revision 129625 caused 1% slowdown on 200.sixtrack
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl at lucon dot org
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33966