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Re: [PATCH] PR/32086, enable cost model by default on i386
- From: "Richard Guenther" <richard dot guenther at gmail dot com>
- To: "Paolo Bonzini" <bonzini at gnu dot org>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 5 Dec 2007 19:13:25 +0100
- Subject: Re: [PATCH] PR/32086, enable cost model by default on i386
- References: <fj6gg6$oia$1@ger.gmane.org>
On Dec 5, 2007 4:35 PM, Paolo Bonzini <bonzini@gnu.org> wrote:
> This fixes a serious polyhedron performance regression.
>
> Booted/tested with -O3 -g on i386-pc-linux-gnu. Only using the
> config/i386/i386.c hunk had many failures (due to the cost model's
> decisions not to vectorize), but no ICEs.
>
> Ok?
This is ok, please watch for fallout.
Thanks,
Richard.
> Paolo
>
> 2007-12-05 Paolo Bonzini <bonzini@gnu.org>
>
> * config/i386/i386.c (override_options): Enable -fvect-cost-model.
>
> 2007-12-05 Paolo Bonzini <bonzini@gnu.org>
>
> * gcc.dg/vect/vect.exp (DEFAULT_VECTCFLAGS): Disable cost model.
> * g++.dg/vect/vect.exp (DEFAULT_VECTCFLAGS): Disable cost model.
> * gfortran.dg/vect/vect.exp (DEFAULT_VECTCFLAGS): Disable cost model.