diff mbox series

[v2,2/2] x86: Remove wcsnlen-sse4_1 from wcslen ifunc-impl-list [BZ #28064]

Message ID 20210708201318.1222367-2-goldstein.w.n@gmail.com
State Committed
Commit 0679442defedf7e52a94264975880ab8674736b2
Headers
Series [v2,1/2] x86-64: Test strlen and wcslen with 0 in the RSI register [BZ #28064] |

Checks

Context Check Description
dj/TryBot-apply_patch success Patch applied to master at the time it was sent
dj/TryBot-32bit success Build for i686

Commit Message

Noah Goldstein July 8, 2021, 8:13 p.m. UTC 
  The following commit

commit 6f573a27b6c8b4236445810a44660612323f5a73
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date:   Wed Jun 23 01:19:34 2021 -0400

    x86-64: Add wcslen optimize for sse4.1

Added wcsnlen-sse4.1 to the wcslen ifunc implementation list and did
not add wcslen-sse4.1 to wcslen ifunc implementation list. This commit
fixes that by removing wcsnlen-sse4.1 from the wcslen ifunc
implementation list and adding wcslen-sse4.1 to the ifunc
implementation list.

Testing:
test-wcslen.c, test-rsi-wcslen.c, and test-rsi-strlen.c are passing as
well as all other tests in wcsmbs and string.

Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
---
Confirmed test-rsi-wcslen.c failed before this fix.
    
 sysdeps/x86_64/multiarch/ifunc-impl-list.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

H.J. Lu July 8, 2021, 8:30 p.m. UTC | #1 
On Thu, Jul 8, 2021 at 1:14 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> The following commit
>
> commit 6f573a27b6c8b4236445810a44660612323f5a73
> Author: Noah Goldstein <goldstein.w.n@gmail.com>
> Date:   Wed Jun 23 01:19:34 2021 -0400
>
>     x86-64: Add wcslen optimize for sse4.1
>
> Added wcsnlen-sse4.1 to the wcslen ifunc implementation list and did
> not add wcslen-sse4.1 to wcslen ifunc implementation list. This commit
> fixes that by removing wcsnlen-sse4.1 from the wcslen ifunc
> implementation list and adding wcslen-sse4.1 to the ifunc
> implementation list.
>
> Testing:
> test-wcslen.c, test-rsi-wcslen.c, and test-rsi-strlen.c are passing as
> well as all other tests in wcsmbs and string.
>
> Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> ---
> Confirmed test-rsi-wcslen.c failed before this fix.

Great.

>  sysdeps/x86_64/multiarch/ifunc-impl-list.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> index dbd1ebf298..39ab10613b 100644
> --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> @@ -684,9 +684,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
>                                && CPU_FEATURE_USABLE (AVX512BW)
>                                && CPU_FEATURE_USABLE (BMI2)),
>                               __wcslen_evex)
> -             IFUNC_IMPL_ADD (array, i, wcsnlen,
> +             IFUNC_IMPL_ADD (array, i, wcslen,
>                               CPU_FEATURE_USABLE (SSE4_1),
> -                             __wcsnlen_sse4_1)
> +                             __wcslen_sse4_1)
>               IFUNC_IMPL_ADD (array, i, wcslen, 1, __wcslen_sse2))
>
>    /* Support sysdeps/x86_64/multiarch/wcsnlen.c.  */
> --
> 2.25.1
>

LGTM.   Please check in both patches.

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

Thanks.
H.J. Lu Feb. 1, 2022, 7:45 p.m. UTC | #2 
On Thu, Jul 8, 2021 at 1:30 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> On Thu, Jul 8, 2021 at 1:14 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
> >
> > The following commit
> >
> > commit 6f573a27b6c8b4236445810a44660612323f5a73
> > Author: Noah Goldstein <goldstein.w.n@gmail.com>
> > Date:   Wed Jun 23 01:19:34 2021 -0400
> >
> >     x86-64: Add wcslen optimize for sse4.1
> >
> > Added wcsnlen-sse4.1 to the wcslen ifunc implementation list and did
> > not add wcslen-sse4.1 to wcslen ifunc implementation list. This commit
> > fixes that by removing wcsnlen-sse4.1 from the wcslen ifunc
> > implementation list and adding wcslen-sse4.1 to the ifunc
> > implementation list.
> >
> > Testing:
> > test-wcslen.c, test-rsi-wcslen.c, and test-rsi-strlen.c are passing as
> > well as all other tests in wcsmbs and string.
> >
> > Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
> > Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
> > ---
> > Confirmed test-rsi-wcslen.c failed before this fix.
>
> Great.
>
> >  sysdeps/x86_64/multiarch/ifunc-impl-list.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> > index dbd1ebf298..39ab10613b 100644
> > --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> > +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
> > @@ -684,9 +684,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
> >                                && CPU_FEATURE_USABLE (AVX512BW)
> >                                && CPU_FEATURE_USABLE (BMI2)),
> >                               __wcslen_evex)
> > -             IFUNC_IMPL_ADD (array, i, wcsnlen,
> > +             IFUNC_IMPL_ADD (array, i, wcslen,
> >                               CPU_FEATURE_USABLE (SSE4_1),
> > -                             __wcsnlen_sse4_1)
> > +                             __wcslen_sse4_1)
> >               IFUNC_IMPL_ADD (array, i, wcslen, 1, __wcslen_sse2))
> >
> >    /* Support sysdeps/x86_64/multiarch/wcsnlen.c.  */
> > --
> > 2.25.1
> >
>
> LGTM.   Please check in both patches.
>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
>

I am backporting this to release branches.
diff mbox series

Patch

diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index dbd1ebf298..39ab10613b 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -684,9 +684,9 @@  __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			       && CPU_FEATURE_USABLE (AVX512BW)
 			       && CPU_FEATURE_USABLE (BMI2)),
 			      __wcslen_evex)
-	      IFUNC_IMPL_ADD (array, i, wcsnlen,
+	      IFUNC_IMPL_ADD (array, i, wcslen,
 			      CPU_FEATURE_USABLE (SSE4_1),
-			      __wcsnlen_sse4_1)
+			      __wcslen_sse4_1)
 	      IFUNC_IMPL_ADD (array, i, wcslen, 1, __wcslen_sse2))
 
   /* Support sysdeps/x86_64/multiarch/wcsnlen.c.  */