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[Bug target/37571] [4.4 regression] Performance regression due to compare/branch fuse optimization
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Sep 2008 16:00:16 -0000
- Subject: [Bug target/37571] [4.4 regression] Performance regression due to compare/branch fuse optimization
- References: <bug-37571-14503@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from hjl dot tools at gmail dot com 2008-09-19 16:00 -------
This regression is caused by compare/branch fuse optimization.
Gcc 4.3 is OK. Turn it off fixes it.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Performance regression with |[4.4 regression] Performance
|-mtune=core2 |regression due to
| |compare/branch fuse
| |optimization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37571