Does memcmp_sse4_2 actually use SSE 4.2 instructions?

[H.J. Lu]

On Tue, Jul 9, 2013 at 5:04 PM, Matt Turner <mattst88@gmail.com> wrote:
> Hi,
>
> I can't seem to find any SSE 4.2 instructions in
> sysdeps/i386/i686/multiarch/memcmp-sse4.S.
>
> It uses ptest, which is in 4.1 but apparently no 4.2 instructions.

That is true.

> Should I send a patch?
>

Yes, please.

Thanks.


--
H.J.