[FFmpeg-devel] [PATCH] Fix configure to disable MMX for Pentium Pro

avcoder ffmpeg
Thu Aug 26 19:10:53 CEST 2010

On Thu, Aug 26, 2010 at 10:48 PM, Jason Garrett-Glaser <
darkshikari at gmail.com> wrote:
> >
> > The main point of the change was to get rid of the stupid global
> > mm_flags variable.  We discussed it at length some time ago (it nearly
> > went full bikeshed), and nobody objected then, not even the distro
> people.
> > Why the sudden outrage?
> Whether we like it or not, a huge number of people compile ffmpeg with
> --cpu=i686 or similar for generic builds.  With these changes,
> --cpu=i686 will actually SLOW DOWN ffmpeg as opposed to not specifying
> CPU at all.  This is not intuitive behavior.

I love i686 for generic P6 architectures which support MMX.

We should revert r24946:  Disable MMX for i686 and pentiumpro

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