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[Bug tree-optimization/23282] [4.0 Regression] wrong results at -O on x86
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Aug 2005 08:25:30 -0000
- Subject: [Bug tree-optimization/23282] [4.0 Regression] wrong results at -O on x86
- References: <20050808062659.23282.jv244@cam.ac.uk>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rguenth at gcc dot gnu dot org 2005-08-08 08:25 -------
Mainline seems to be really fixed, even with complete loop unrolling disabled.
4.0.2 as of 20050728 is still affected by the bug (you can hide it there, too,
with specifying -fpeel-loops, which enables complete unrolling).
Must be a IVOPTs or scalar evolution problem (the latter got some fixes on
the mainline).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23282