On Thu, 2005-12-08 at 10:36 -0800, Jesse Barnes wrote:
On Thursday, December 8, 2005 10:15 am, Arjan van de Ven wrote:
> > Arjan mentioned the other day that the Fedora linker is capable of
> > loading CPU specific libraries, depending on which ISA extensions
> > are available. Since gcc 4.1 has a much improved autovectorizer,
> > maybe now is the time to start making use of it? It seems like
> > codec libraries are good candidates for autovectorization, maybe
> > their spec files could build SSE2, SSE3, and 3dnow variants along
> > with the regular, non-SIMD versions of the libraries?
>
> on x86-64 that's already there. on x86.. why ?
There are still lots of x86 machines out there, including the upcoming,
dual-core Yonah chip, so providing SIMD versions of the libraries for
x86 is worthwhile, IMO.
Which libraries have vectorized variants on x86-64? I only saw one for
my x86 box...
on x86-64 all do.. SSE2 etc are "core" features there and don't need
special dirs, it's part of the normal ABI