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Re: Status of SSE support in current gcc mainline
- To: Samuel Figueroa <figueroa at apple dot com>
- Subject: Re: Status of SSE support in current gcc mainline
- From: Jan Hubicka <jh at suse dot cz>
- Date: Thu, 22 Mar 2001 21:27:53 +0100
- Cc: Jan Hubicka <jh at suse dot cz>, Bernd Schmidt <bernds at cambridge dot redhat dot com>, gcc at gcc dot gnu dot org
- References: <20010322192525.D511@atrey.karlin.mff.cuni.cz> <200103221843.KAA28143@scv3.apple.com>
> Thanks. Just to give a little more context, I'd like to add some
> support for the PowerPC's AltiVec (128-bit) data types.
>
> By the way, I did notice some support for packed 32-bit integers.
> Bernd, I would appreciate it if you could point me at header files
> or sample programs showing how SSE instructions are actually
> accessed using gcc. (I've found web sites that talk about using
> Intel's compiler, for example, for this purpose. I don't know if
> the same sample programs could be compiled without modification
> using gcc.)
I believe that design goal of the SSE instricts are to be compatible
with Intel's one at user level.
But if we want to have in gcc multiple targets with packed types support,
we should try to find way to handle them in unified style.
Also I believe that Apple is having some patches for PPC-Altivec instricts
available somewhere too.
Honza