On Thu, Mar 17, 2022 at 9:47 PM sunil.k.pandey via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> On Linux/x86_64,
>
> c482c28ba4c549006deb70dead90fe8ab34dcbcf is the first bad commit
> commit c482c28ba4c549006deb70dead90fe8ab34dcbcf
> Author: Roger Sayle <ro...@nextmovesoftware.com>
> Date: Thu Mar 17 21:56:32 2022 +0000
>
> PR 90356: Use xor to load const_double 0.0 on SSE (always)
>
> caused
>
> FAIL: gcc.target/i386/pr86722.c scan-assembler-not orpd
> FAIL: gcc.target/i386/pr90356.c scan-assembler pxor
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-7693/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
>
> To reproduce:
>
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="i386.exp=gcc.target/i386/pr86722.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="i386.exp=gcc.target/i386/pr90356.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="i386.exp=gcc.target/i386/pr90356.c --target_board='unix{-m64\
> -march=cascadelake}'"
>
I am checking in this testcase fix.
--
H.J.
From 24722f23a9d6ac4fbc3694b92585db61797a843d Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.to...@gmail.com>
Date: Mon, 21 Mar 2022 13:57:31 -0700
Subject: [PATCH] x86: Disable AVX on pr86722.c and pr90356.c
SSE/SSE2 are enabled explicitly on pr86722.c and pr90356.c. Disable AVX
to avoid AVX with -march=native.
PR target/86722
PR tree-optimization/90356
* gcc.target/i386/pr86722.c: Add -mno-avx.
* gcc.target/i386/pr90356.c: Likewise.
---
gcc/testsuite/gcc.target/i386/pr86722.c | 3 +--
gcc/testsuite/gcc.target/i386/pr90356.c | 2 +-
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/gcc/testsuite/gcc.target/i386/pr86722.c b/gcc/testsuite/gcc.target/i386/pr86722.c
index 1092c4d8035..4de2ca1a6c0 100644
--- a/gcc/testsuite/gcc.target/i386/pr86722.c
+++ b/gcc/testsuite/gcc.target/i386/pr86722.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { ! ia32 } } } */
-/* { dg-options "-O2 -msse" } */
+/* { dg-options "-O2 -mno-avx -msse" } */
void f(double*d,double*e){
for(;d<e;++d)
@@ -8,4 +8,3 @@ void f(double*d,double*e){
/* { dg-final { scan-assembler-not "andnpd" } } */
/* { dg-final { scan-assembler-not "orpd" } } */
-
diff --git a/gcc/testsuite/gcc.target/i386/pr90356.c b/gcc/testsuite/gcc.target/i386/pr90356.c
index 6f852b3f671..79e0d64b0cb 100644
--- a/gcc/testsuite/gcc.target/i386/pr90356.c
+++ b/gcc/testsuite/gcc.target/i386/pr90356.c
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O2 -msse2 -mfpmath=sse" } */
+/* { dg-options "-O2 -mno-avx -msse2 -mfpmath=sse" } */
float doit(float k){
float c[2]={0.0};
c[1]+=k;
--
2.35.1
