RE: [r16-3364 Regression] FAIL: gcc.target/i386/shift-gf2p8affine-7.c scan-assembler-times vgf2p8affineqb 53 on Linux/x86_64

> From: Jiang, Haochen
> Sent: Friday, August 29, 2025 1:48 PM
> 
> > From: Andi Kleen <[email protected]>
> > Sent: Friday, August 29, 2025 1:22 PM
> >
> > This patch should fix it. Please confirm.
> >
> >
> > diff --git a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-1.c
> > b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-1.c
> > index e5be3a35538..cb576eb4498 100644
> > --- a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-1.c
> > +++ b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-1.c
> > @@ -1,5 +1,5 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-mgfni -mavx512vl -mavx512bw -mavx512f -O3" } */
> > +/* { dg-options "-mgfni -mavx512vl -mavx512bw -mavx512f -O3 -
> > march=x86-64 -mtune=generic" } */
> >  /* { dg-final { scan-assembler-times "vgf2p8affineqb" 14 } } */
> >
> >  #ifndef N
> > diff --git a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-2.c
> > b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-2.c
> > index 098361aa9ab..c46af84bdcc 100644
> > --- a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-2.c
> > +++ b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-2.c
> > @@ -1,5 +1,5 @@
> >  /* { dg-do run } */
> > -/* { dg-options "-mgfni -mavx512vl -mavx512bw -mavx512f -O3 -Wno-
> shift-
> > count-negative" } */
> > +/* { dg-options "-mgfni -mavx512vl -mavx512bw -mavx512f -O3 -Wno-
> > shift-count-negative -march=x86-64 -mtune=generic" } */
> >
> >  #include <string.h>
> >
> > diff --git a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-3.c
> > b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-3.c
> > index 9e5ae5d19f3..2099f4edddf 100644
> > --- a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-3.c
> > +++ b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-3.c
> > @@ -1,5 +1,5 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-mgfni -mavx512bw -mavx512f -O3" } */
> > +/* { dg-options "-mgfni -mavx512bw -mavx512f -O3 -march=x86-64 -
> > mtune=generic" } */
> >  /* { dg-final { scan-assembler-times "vgf2p8affineqb" 12 } } */
> >
> >  /* Based on a test case from Andrew Pinski */
> > diff --git a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-5.c
> > b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-5.c
> > index 65fb69227e6..b8489a659a5 100644
> > --- a/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-5.c
> > +++ b/gcc/testsuite/gcc.target/i386/shift-gf2p8affine-5.c
> > @@ -1,5 +1,5 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-mgfni -mavx -O3 -Wno-shift-count-negative" } */
> > +/* { dg-options "-mgfni -mavx -O3 -Wno-shift-count-negative -march=x86-
> > 64 -mtune=generic" } */
> >  /* { dg-final { scan-assembler-times "vgf2p8affineqb" 31 } } */
> 
> At least -mtune=generic won't fix this from my side.
> 
> gcc.target/i386/shift-gf2p8affine-5.c: vgf2p8affineqb found 53 times
> FAIL: gcc.target/i386/shift-gf2p8affine-5.c scan-assembler-times
> vgf2p8affineqb 31
> 

Sorry, mine. I just found you also added -march=x86-64. Then it should be
fixed everywhere.

Thx,
Haochen