[vorbis-dev] Optimisations

[David A. Gatwood]

On Thu, 16 Nov 2000, Segher Boessenkool wrote:

> David Riley wrote:
> > 
> > Jason Hecker wrote:
> > >
> > > I guess, but they would be the easiest to implement first.  Apart from the
> > > x86 vector stuff, what other CPUs that OggVorbis runs on have SIMD
> > > operations that would need hand coding?
> > >
> > PowerPC's from the G4 line and up (that is, future processors) have
> > Altivec, a very nice SIMD set.  It's a lot like Intel's SSE (i.e.
> 
> Don't assume all future, or even "G4 and up", processors will have it.
> Some will, some won't.

True.  Motorola's end-user chips probably will, IBM's probably won't.  No
embedded ppc chips from either company will, in all likelihood, but I
don't know that for sure.

David

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