On Fri, 17 Jan 2014, Jakub Jelinek wrote:
> Hi!
>
> For -O2 vectorization by default GCC 4.9 uses the cheap cost model,
> which disallows e.g. peeling for alignment, but on strict alignment
> targets the loop needs to be peeled for alignment, otherwise vectorization
> isn't performed.
>
> Fixed by just adding -fno-vect-cost-model to dg-options,
> bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
Ok.
Thanks,
Richard.
> 2014-01-17 Jakub Jelinek <ja...@redhat.com>
>
> PR testsuite/58776
> * gcc.dg/tree-ssa-gen-vect-32.c: Add -fno-vect-cost-model to
> dg-options, use dg-additional-options for i?86/x86_64 to avoid
> option duplication.
>
> --- gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c.jj 2012-10-03
> 09:01:35.000000000 +0200
> +++ gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c 2014-01-17
> 11:03:27.039224079 +0100
> @@ -1,6 +1,6 @@
> /* { dg-do run { target vect_cmdline_needed } } */
> -/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-details" } */
> -/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-details -mno-sse" {
> target { i?86-*-* x86_64-*-* } } } */
> +/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-details
> -fno-vect-cost-model" } */
> +/* { dg-additional-options "-mno-sse" { target { i?86-*-* x86_64-*-* } } } */
>
> #include <stdlib.h>
>
>
> Jakub
>
>
--
Richard Biener <rguent...@suse.de>
SUSE / SUSE Labs
SUSE LINUX Products GmbH - Nuernberg - AG Nuernberg - HRB 16746
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