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[Bug tree-optimization/43012] [4.5 Regression][graphite] wrong code for -floop-strip-mine in 453.povray
- From: "amonakov at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Feb 2010 14:28:29 -0000
- Subject: [Bug tree-optimization/43012] [4.5 Regression][graphite] wrong code for -floop-strip-mine in 453.povray
- References: <bug-43012-4503@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from amonakov at gcc dot gnu dot org 2010-02-11 14:28 -------
(In reply to comment #2)
> Confirming. Reproducible on amd64-linux.
>
> This appears to be a bug in CLooG. Disable CLooG optimizations on graphite
> branch fixes the bug. The problem is that CLooG generates wrong bounds for
> parts of strip-mined loop (bounds of the first and the last loops are wrong):
I've sent a CLooG patch.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43012