[XviD-devel] asm

[suxen_drol]

On Fri, 20 Dec 2002 01:25:07 +1030 Radek Czyz <radoslaw@syskin.cjb.net> wrote:

> Hello,
> 
> Recent asm optimizations made me look at the current state of sad16v
> function.
> I can see that the only fully asm-ed sad16v is xmm-ed one. It's fine
> with me (although I wouldn't mind having it athlon-optimized as well),
> but for every non xmm-ed architecture sad16v will be pretty slow.

xmm == athlon.

> Please keep in mind that sad16v is the base of current P-frame motion
> search. It's actually the only sad function used there (apart from
> sad8, but sad8 is used much less).

looking into it...
note: from our website poll, it seems most people have athlon/p3
machines (which support xmm).
> 
> I'm afraid that xvid is quite slow on non-xmmed machines at the
> moment... :( and I mean different processors than x86 too.

-- pete; life is like a box of ammo