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Re: [PATCH]: Backport fix for PR41963 (miscompilation of 177.mesa)
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Uros Bizjak <ubizjak at gmail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 7 Nov 2009 14:45:53 +0100
- Subject: Re: [PATCH]: Backport fix for PR41963 (miscompilation of 177.mesa)
- References: <4AF4B036.3020904@gmail.com>
2009/11/7 Uros Bizjak <ubizjak@gmail.com>:
> Hello!
>
> 2009-11-07 ?Uros Bizjak <ubizjak@gmail.com>
>
> ? ?Backport from mainline:
> ? ?2009-11-06 ?Michael Matz <matz@suse.de>
>
> ? ?PR middle-end/41963
> ? ?* tree-ssa-math-opts.c (execute_cse_reciprocals): Check all uses
> ? ?of a potential reciprocal to really be reciprocals.
>
> testsuite/ChangeLog:
>
> 2009-11-07 ?Uros Bizjak <ubizjak@gmail.com>
>
> ? ?Backport from mainline:
> ? ?2009-11-06 ?Michael Matz <matz@suse.de>
>
> ? ?PR middle-end/41963
> ? ?* gcc.target/i386/pr41963.c: New test.
>
> Since this transformation is still activated by -mrecip only in the release
> branches, I have moved the test to i386 target directory, where this option
> can be activated.
>
> Patch was tested on x86_64-pc-linux-gnu. OK for 4.4 and 4.3 ?
Ok for 4.4. 4.3 needs a different patch as it doesn't have tuples.
Richard.
> Uros.
>