* Re: [PATCH] x86-64: Require BMI2 for strchr-avx2.S
[not found] ` <874kg22m2a.fsf@oldenburg.str.redhat.com>
@ 2022-04-27 23:48 ` Sunil Pandey
2022-04-28 10:19 ` Florian Weimer
0 siblings, 1 reply; 2+ messages in thread
From: Sunil Pandey @ 2022-04-27 23:48 UTC (permalink / raw)
To: Florian Weimer, libc-stable; +Cc: H.J. Lu via Libc-alpha
On Mon, Apr 19, 2021 at 11:50 AM Florian Weimer via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> * H. J. Lu via Libc-alpha:
>
> > Since strchr-avx2.S updated by
> >
> > commit 1f745ecc2109890886b161d4791e1406fdfc29b8
> > Author: noah <goldstein.w.n@gmail.com>
> > Date: Wed Feb 3 00:38:59 2021 -0500
> >
> > x86-64: Refactor and improve performance of strchr-avx2.S
> >
> > uses sarx:
> >
> > c4 e2 72 f7 c0 sarx %ecx,%eax,%eax
> >
> > for strchr-avx2 family functions, require BMI2 in ifunc-impl-list.c and
> > ifunc-avx2.h.
>
> Seems reasonable, thanks.
>
> Florian
>
I would like to backport this patch to release branches.
Any comments or objections?
--Sunil
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] x86-64: Require BMI2 for strchr-avx2.S
2022-04-27 23:48 ` [PATCH] x86-64: Require BMI2 for strchr-avx2.S Sunil Pandey
@ 2022-04-28 10:19 ` Florian Weimer
0 siblings, 0 replies; 2+ messages in thread
From: Florian Weimer @ 2022-04-28 10:19 UTC (permalink / raw)
To: Sunil Pandey; +Cc: libc-stable, H.J. Lu via Libc-alpha
* Sunil Pandey:
> On Mon, Apr 19, 2021 at 11:50 AM Florian Weimer via Libc-alpha
> <libc-alpha@sourceware.org> wrote:
>>
>> * H. J. Lu via Libc-alpha:
>>
>> > Since strchr-avx2.S updated by
>> >
>> > commit 1f745ecc2109890886b161d4791e1406fdfc29b8
>> > Author: noah <goldstein.w.n@gmail.com>
>> > Date: Wed Feb 3 00:38:59 2021 -0500
>> >
>> > x86-64: Refactor and improve performance of strchr-avx2.S
>> >
>> > uses sarx:
>> >
>> > c4 e2 72 f7 c0 sarx %ecx,%eax,%eax
>> >
>> > for strchr-avx2 family functions, require BMI2 in ifunc-impl-list.c and
>> > ifunc-avx2.h.
>>
>> Seems reasonable, thanks.
>>
>> Florian
>>
>
> I would like to backport this patch to release branches.
> Any comments or objections?
Please backport.
Thanks,
Florian
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] ` <874kg22m2a.fsf@oldenburg.str.redhat.com>
2022-04-27 23:48 ` [PATCH] x86-64: Require BMI2 for strchr-avx2.S Sunil Pandey
2022-04-28 10:19 ` Florian Weimer
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