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Re: gcc3.1 and 3DNOW prefetch
- From: Jan Hubicka <jh at suse dot cz>
- To: Tom Crispin <crispin at centtech dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Tue, 4 Jun 2002 11:16:45 +0200
- Subject: Re: gcc3.1 and 3DNOW prefetch
- References: <3CFC2624.9FDF246C@centtech.com>
>
> I've been looking at the 3.1 source code w.r.t. to PREFETCH, and it
> looks like only the SSE prefetch is supported, not the 3DNOW prefetch.
> Am I missing something?
There is 3dnow prefetch support. SSE prefetch is used with
priority as it is more portable and supported by all chips supporting
3dnow one, but when you ask for write prefetch and -march=k6/athlon you
should get the 3dnow one.
Honza
>
> Thanks
>
>
> --
> Tom Crispin
> Centaur Technology
> 512-493-8625
> crispin@centtech.com