[FFmpeg-devel] Does i686 have MMX?

[François Revol]

Le 28 ao?t 2010 ? 18:29, Reimar D?ffinger a ?crit :

> On Sat, Aug 28, 2010 at 03:14:13PM +0200, Fran?ois Revol wrote:
>> 
>> Le 28 ao?t 2010 ? 13:09, Reimar D?ffinger a ?crit :
>> 
>>> On Sat, Aug 28, 2010 at 09:51:13AM +0100, M?ns Rullg?rd wrote:
>>>> I was talking about mmx/sse/etc being treated specially compared to
>>>> e.g. altivec or neon.
>>> 
>>> I'd like to mention that altivec is only special since we realized
>>> we just can't properly test for altivec at runtime.
>> 
>> You mean you can't signal(SIGILL) ?
> 
> You can't (or at least very much should not) mess with signal handlers
> in a library, so the answer is "no".

Of course some weird OSes have a single sig mask for the whole process so there are side effects on threads you don't run on... shame on them.

Fran?ois.