[PATCH] PR/32086, enable cost model by default on i386

[Richard Guenther]

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.