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Re: [PATCH] Fix PR46190
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Sat, 21 May 2011 08:02:38 -0700
- Subject: Re: [PATCH] Fix PR46190
- References: <alpine.LNX.2.00.1011031427450.23074@zhemvz.fhfr.qr>
On Wed, Nov 3, 2010 at 6:29 AM, Richard Guenther <rguenther@suse.de> wrote:
>
> This fixes an ICE introduced by the recent fixes for negative step
> vectorization. ?The issue is that while for positive steps it doesn't
> matter whether we compute peel iterations with the vectorization
> factor it does so for negative steps (or rather the way we compute
> npeel here).
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
>
> Richard.
>
> 2010-11-03 ?Richard Guenther ?<rguenther@suse.de>
>
> ? ? ? ?PR tree-optimization/46190
> ? ? ? ?* tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
> ? ? ? ?Properly compute peel iterations.
>
> ? ? ? ?* gfortran.dg/pr46190.f90: New testcase.
>
This caused:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49093
H.J.