| Message ID | 20140117141333.GF892@tucnak.redhat.com |
|---|---|
| State | New |
| Headers | show |
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 <jakub@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 > >
--- 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>