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testsuite: Fix up pr96573.c on aarch64 [PR96573]

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On Thu, Apr 01, 2021 at 02:16:55PM +0100, Alex Coplan via Gcc-patches wrote:
> FYI, I'm seeing the new test failing on aarch64:
>
> PASS: gcc.dg/pr96573.c (test for excess errors)
> FAIL: gcc.dg/pr96573.c scan-tree-dump optimized "__builtin_bswap"

The vectorizer in the aarch64 case manages to emit a VEC_PERM_EXPR instead
(which is just as efficient).

So, do we want to go for the following (and/or perhaps also restrict the test to
a couple of targets where it works?  In my last distro build it failed only
on aarch64-linux, while armv7hl-linux-gnueabi and
{i686,x86_64,powerpc64le,s390x}-linux were fine)?

2021-04-06  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/96573
	* gcc.dg/pr96573.c: Instead of __builtin_bswap accept also
	VEC_PERM_EXPR with bswapping permutation.
This commit is contained in:
Jakub Jelinek 2021-04-06 12:44:51 +02:00
parent 58cd9fc8a6
commit bfeb36bd03
1 changed files with 1 additions and 1 deletions
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gcc/testsuite/gcc.dg/pr96573.c
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@ -2,7 +2,7 @@
/* { dg-do compile { target { lp64 || ilp32 } } } */
/* { dg-require-effective-target bswap } */
/* { dg-options "-O3 -fdump-tree-optimized" } */
/* { dg-final { scan-tree-dump "__builtin_bswap" "optimized" } } */
/* { dg-final { scan-tree-dump "__builtin_bswap\|VEC_PERM_EXPR\[^\n\r]*7, 6, 5, 4, 3, 2, 1, 0" "optimized" } } */
typedef __SIZE_TYPE__ size_t;