[PATCH RFC] Imporve 64bit memcpy performance for Haswell CPU with AVX instruction

[H.J. Lu]

On Tue, Jun 10, 2014 at 6:54 AM, Ling Ma <ling.ma.program@gmail.com> wrote:
> In this patch as gziped attachment, we take advantage of HSW memory
> bandwidth, manage to reduce miss branch prediction by avoiding using
> branch instructions and
> force destination to be aligned with avx instruction.
>
> The CPU2006 403.gcc benchmark indicates this patch improves performance
> from 2% to 8% compared with pending sse2 version.
>
> Appreciate your comment

Any feedback?  I'd like to check it in before 2.20 code freeze?

Thanks.


-- 
H.J.