On Wed, Apr 25, 2012 at 1:51 PM, Greta Yorsh <greta.yo...@arm.com> wrote:
> The test gcc.dg/vect/slp-perm-8.c fails on arm-none-eabi with neon enabled:
> FAIL: gcc.dg/vect/slp-perm-8.c scan-tree-dump-times vect "vectorized 1
> loops" 2
>
> The test expects 2 loops to be vectorized, while gcc successfully vectorizes
> 3 loops in this test using neon on arm. This patch adjusts the expected
> output. Fixed test passes on qemu for arm and powerpc.
>
> OK for trunk?
I think the proper fix is to instead of
for (i = 0; i < N; i++)
{
input[i] = i;
output[i] = 0;
if (input[i] > 256)
abort ();
}
use
for (i = 0; i < N; i++)
{
input[i] = i;
output[i] = 0;
__asm__ volatile ("");
}
to prevent vectorization of initialization loops.
> Thanks,
> Greta
>
> gcc/testsuite/ChangeLog
>
> 2012-04-23 Greta Yorsh <greta.yo...@arm.com>
>
> * gcc.dg/vect/slp-perm-8.c (dg-final): Adjust expected number
> of vectorized loops for arm with neon.
