[FFmpeg-devel] [PATCH] x86/dsputil: implement 3DNow version of vector_clipf

Christophe Gisquet christophe.gisquet at gmail.com
Wed May 28 10:59:29 CEST 2014


2014-05-27 21:08 GMT+02:00 James Almer <jamrial at gmail.com>:

>> Maybe do twice at a time so you can do some pairing (which might help with
>> performance)?
> I didn't bench, but wouldn't out-of-order execution deal with this anyway?

Maybe, but k6's oooe is weaker than what we are used to nowadays, and
I would expect manual pairing/dual issuing to help.

On the other hand, it's for 15+yo CPUs, but with that logic, we should
remove all of 3dnow.


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