[FFmpeg-devel] [RFC] snow SSE2 optimizations

[Luca Barbato]

Michael Niedermayer wrote:
> Hi
> 
> On Tue, Aug 28, 2007 at 05:10:18PM +0200, Luca Barbato wrote:
>> Start guessing why there is just one altivec (across 3 generations of
>> cpus) and SPU is still quite similar...
>>
>> The intel design for instructions set wasn't and isn't the smarter and
>> they keep adding irregular changes...
> 
> true, but it also isnt the most stupid, sparc-vis beats them by quite a bit
> and i dont think a perfectly regular set is a good idea either, because
> 90% of the resulting instructions are never used by anyone, but the
> cpu must support them, it makes the cpu more complex and slower
> 

Check altivec/vmx or SPU. The instruction set rarely gets annoing and it
isn't that big or underfeatured.

lu

-- 

Luca Barbato

Gentoo/linux Gentoo/PPC
http://dev.gentoo.org/~lu_zero