[MPlayer-dev-eng] [PATCH] implied CPU extensions

Diego Biurrun diego at biurrun.de
Sat Apr 22 16:11:41 CEST 2006


On Sat, Apr 22, 2006 at 04:42:55PM +0300, Jan Knutar wrote:
> On Saturday 22 April 2006 15:59, Diego Biurrun wrote:
> > I wonder if the following patch is safe to apply.  IMO it should be, but
> > I'd like to doublecheck..
> > 
> > Is it possible for e.g. sse to appear as processor flag, but not mmxext
> > while the processor *does* support mmxext?
> 
> I checked on a Pentium 3 Coppermine, and a Pentium 4 3.0Ghz HT.
> Both support mmxext, but don't report it in cpuflags.

What exactly do they report?

> With the changes you commited to configure, mmx2 will be disabled
> on all Intel CPUs, which will obviously be a large speed impact.

Yeah, I was too quick to commit, I'm reverting the change.

Diego




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