[vorbis-dev] Optimisations

Firelight Multimedia support at fmod.org
Thu Nov 16 14:55:35 PST 2000



I would keep intel assembly done in nasm.. its what i use now for cross
platform intel assembler and usually supports the latest instructions (a
long time ahead of devstudio).
Brett

----- Original Message -----
From: "David Riley" <oscar at the-rileys.net>
To: <vorbis-dev at xiph.org>
Sent: Thursday, November 16, 2000 9:09 PM
Subject: Re: [vorbis-dev] Optimisations

> "David A. Gatwood" wrote:
> >
> > PowerPC 74xx (G4/Altivec) -- but not in assembly.  There are C/C++
> > extensions in gcc (or will be... not sure if they're out in public yet)
to
> > make this easier.
>
> Why not in assembly?  The GCC extensions won't necessarily work across
> platforms (i.e. with the Metrowerks compiler) while it's already
> accepted that assembly doesn't... And (to my mind) it's easier to
> separate two similar assembly files than C files.  Besides, most PPC
> compilers I've seen perform rather badly on FP multiply-add operations
> in sequence (see <http://oscar.the-rileys.net/programming/assem.html>
> for an example).
>
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