On Sun, May 17, 2020 at 7:06 PM H.J. Lu wrote:
>
> Duplicate the cmpstrn pattern for cmpmem. The only difference is that
> the length argument of cmpmem is guaranteed to be less than or equal to
> lengths of 2 memory areas. Since "repz cmpsb" can be much slower than
> memcmp function
Duplicate the cmpstrn pattern for cmpmem. The only difference is that
the length argument of cmpmem is guaranteed to be less than or equal to
lengths of 2 memory areas. Since "repz cmpsb" can be much slower than
memcmp function implemented with vector instruction, see
