[FFmpeg-devel] Does i686 have MMX?

Måns Rullgård mans
Thu Aug 26 21:13:46 CEST 2010

Alex Converse <alex.converse at gmail.com> writes:

> 2010/8/26 M?ns Rullg?rd <mans at mansr.com>:
>> Jason Garrett-Glaser <darkshikari at gmail.com> writes:
>>> The issue is simple:
>>> 1. ?People use --cpu on x86 to mean "it should run on at least this
>>> CPU, and contain optimizations for all better CPUs".
>> Are you aware of the contradiction in that statement?
> please elaborate

"Optimisations for better CPUs" might not run on "this CPU".  Thus, if
the code "contains" such optimisations, it might not run, yet running
was a requirement.

M?ns Rullg?rd
mans at mansr.com

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