x86: Update gcc.target/i386/pr108938-3.c

commit 4b71cafc8447e09ee41aff02acb5b26e8b112466
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Feb 17 11:43:43 2026 +0100

    bswap: Handle VEC_PACK_TRUNC_EXPR [PR120233]

compiles

void
foo2 (char* a, short* __restrict b)
{
  a[0] = b[0] >> 8;
  a[1] = b[0];
  a[2] = b[1] >> 8;
  a[3] = b[1];
}

into

	movl	(%rsi), %eax
	bswap	%eax
	roll	$16, %eax
	movl	%eax, (%rdi)
	ret

instead of

	movzwl	(%rsi), %eax
	movzwl	2(%rsi), %edx
	movl	%eax, %ecx
	sall	$16, %eax
	sarw	$8, %cx
	movzwl	%cx, %ecx
	orl	%ecx, %eax
	movd	%eax, %xmm0
	movl	%edx, %eax
	sall	$16, %edx
	sarw	$8, %ax
	movdqa	%xmm0, %xmm2
	movzwl	%ax, %eax
	orl	%eax, %edx
	movd	%edx, %xmm1
	punpcklbw	%xmm1, %xmm2
	punpcklbw	%xmm1, %xmm0
	pshufd	$65, %xmm2, %xmm2
	punpcklbw	%xmm2, %xmm0
	movd	%xmm0, (%rdi)
	ret

Update gcc.target/i386/pr108938-3.c to also scan 3 bswaps for x86-64.

	PR target/120233
	* gcc.target/i386/pr108938-3.c: Also scan 3 bswaps for x86-64.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

diff --git a/gcc/testsuite/gcc.target/i386/pr108938-3.c b/gcc/testsuite/gcc.target/i386/pr108938-3.c
index 47293d49bb9ea63215538017fb91f4b9174453bf..cd87314e57f6f0a8b3627665634bd843c5a6df5c 100644 (file)
--- a/gcc/testsuite/gcc.target/i386/pr108938-3.c
+++ b/gcc/testsuite/gcc.target/i386/pr108938-3.c
@@ -1,7 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -ftree-vectorize -mno-movbe -msse2 -mno-avx" } */
-/* { dg-final { scan-assembler-times "bswap\[\t ]+" 2 { target { ! ia32 } } } } */
-/* { dg-final { scan-assembler-times "bswap\[\t ]+" 3 { target ia32 } } } */
+/* { dg-final { scan-assembler-times "bswap\[\t ]+" 3 } } */
 
 void
 foo1 (char* a, unsigned int* __restrict b)