Subject: Re: Performance of various memcpy()'s
To: David Laight <david@l8s.co.uk>
From: Bang Jun-Young <junyoung@mogua.com>
List: tech-perform
Date: 10/23/2002 02:16:40
On Wed, Oct 16, 2002 at 12:58:52PM +0100, David Laight wrote:
> rep movsw 1.619813 s
> asm loop 1.190194 s
> MMX memcpy using MOVQ 1.024688 s
>
> where the 'rep movsl' and 'asm loop' are:
>
>
> #include <machine/asm.h>
>
> ENTRY(memcpy_rep_movsl)
BTW, where's 'rep movsw'? memcpy_rep_movsl is pretty much the same as
libc memcpy.
Jun-Young
--
Bang Jun-Young <junyoung@mogua.com>