[PATCH] x86-64: Check Prefer_FSRM in ifunc-memmove.h

[H.J. Lu]

On Mon, May 21, 2018 at 10:37 AM, H.J. Lu <hongjiu.lu@intel.com> wrote:
> Although the Fast Short REP MOVSB (FSRM) implementations of memmove,
> memcpy and mempcpy aren't used by the current processors, this patch
> adds Prefer_FSRM check in ifunc-memmove.h so that they can be used in
> the future.
>
>         * sysdeps/x86/cpu-features.h (bit_arch_Prefer_FSRM): New.
>         (index_arch_Prefer_FSRM): Likewise.
>         * sysdeps/x86/cpu-tunables.c (TUNABLE_CALLBACK (set_hwcaps)):
>         Also check Prefer_FSRM.
>         * sysdeps/x86_64/multiarch/ifunc-memmove.h (IFUNC_SELECTOR):
>         Also return OPTIMIZE (erms) for Prefer_FSRM.

This is the patch I am going to check in shortly.

-- 
H.J.
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