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[Bug target/19506] [4.0 Regression] PovRay produces wrong pictures with -mfpmath=sse -ffast-math.
- From: "rth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Jan 2005 22:03:58 -0000
- Subject: [Bug target/19506] [4.0 Regression] PovRay produces wrong pictures with -mfpmath=sse -ffast-math.
- References: <20050118154405.19506.uros@kss-loka.si>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rth at gcc dot gnu dot org 2005-01-21 22:03 -------
I've found the problem, via binary search on the povray source and then
visual inspection of the file found to be miscompiled. The mov[sd]fcc_1_sse
patterns are missing an earlyclobber. The fix isn't quite as simple as just
adding '&' to the pattern, but I should have it done today.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19506