Re: [r11-6351 Regression] FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxwq 2 on Linux/x86_64

[Hongtao Liu <crazylht@gmail.com>]

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On Tue, Dec 29, 2020 at 3:01 PM sunil.k.pandey via Gcc-regression
<gcc-regression@gcc.gnu.org> wrote:
>
> On Linux/x86_64,
>
> 12ae2bc70846a2be8255eaa41322cd1a5a7b7350 is the first bad commit
> commit 12ae2bc70846a2be8255eaa41322cd1a5a7b7350
> Author: Hongyu Wang <hongyu.wang@intel.com>
> Date:   Fri Dec 25 09:25:39 2020 +0800
>
>     Fix standard name for zero/sign extend expanders
>
> caused
>
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxbd 2
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxbq 2
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxbw 2
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxdq 2
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxwd 2
> FAIL: gcc.target/i386/pr92658-avx512bw-2.c scan-assembler-times pmovsxwq 2
>
> with GCC configured with
>
> ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-6351/usr --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl --enable-libmpx x86_64-linux --disable-bootstrap
>

I'm going to checkin this patch as a simple fix for adjusting the testcase.

-- 
BR,
Hongtao

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From 63abcccb7a375bae6dea8a7885de0232f20f175f Mon Sep 17 00:00:00 2001
From: Hongyu Wang <hongyu.wang@intel.com>
Date: Tue, 29 Dec 2020 15:14:09 +0800
Subject: [PATCH] Adjust testcase for PR 92658

gcc/testsuite/ChangeLog:

	* testsuite/gcc.target/i386/pr92658-avx512bw.c: Add
	-mprefer-vector-width=512 to avoid impact of different default
	mtune which gcc is built with.
	* testsuite/gcc.target/i386/pr92658-avx512bw-2.c: Ditto.
---
 gcc/testsuite/gcc.target/i386/pr92658-avx512bw-2.c | 2 +-
 gcc/testsuite/gcc.target/i386/pr92658-avx512bw.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/i386/pr92658-avx512bw-2.c b/gcc/testsuite/gcc.target/i386/pr92658-avx512bw-2.c
index 811f21aa917..33eecbf3afa 100644
--- a/gcc/testsuite/gcc.target/i386/pr92658-avx512bw-2.c
+++ b/gcc/testsuite/gcc.target/i386/pr92658-avx512bw-2.c
@@ -1,6 +1,6 @@
 /* PR target/92658 */
 /* { dg-do compile } */
-/* { dg-options "-O2 -ftree-vectorize -mavx512bw" } */
+/* { dg-options "-O2 -ftree-vectorize -mavx512bw -mprefer-vector-width=512" } */
 
 typedef char v64qi __attribute__((vector_size (64)));
 typedef short v32hi __attribute__((vector_size (64)));
diff --git a/gcc/testsuite/gcc.target/i386/pr92658-avx512bw.c b/gcc/testsuite/gcc.target/i386/pr92658-avx512bw.c
index b1d54d24a81..2e8978481e1 100644
--- a/gcc/testsuite/gcc.target/i386/pr92658-avx512bw.c
+++ b/gcc/testsuite/gcc.target/i386/pr92658-avx512bw.c
@@ -1,6 +1,6 @@
 /* PR target/92658 */
 /* { dg-do compile } */
-/* { dg-options "-O2 -ftree-vectorize -mavx512bw" } */
+/* { dg-options "-O2 -ftree-vectorize -mavx512bw -mprefer-vector-width=512" } */
 
 typedef unsigned char v64qi __attribute__((vector_size (64)));
 typedef unsigned short v32hi __attribute__((vector_size (64)));
-- 
2.29.2