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Re: [autovect] [patch] Non-unit-stride access (interleaving)
- From: Ira Rosen <IRAR at il dot ibm dot com>
- To: Toon Moene <moene at knmi dot nl>
- Cc: gcc-patches at gcc dot gnu dot org, Richard Henderson <rth at redhat dot com>
- Date: Wed, 23 Nov 2005 13:36:23 +0200
- Subject: Re: [autovect] [patch] Non-unit-stride access (interleaving)
Toon Moene <moene@knmi.nl> wrote on 23/11/2005 11:51:14:
> Ira wrote:
>
> > This is a preliminary implementation of interleaved data support for
> > the vectorizer for powerpc as described in
> > http://gcc.gnu.org/ml/gcc/2005-11/msg00701.html.
>
> > Bootstrapped and tested on ppc-linux. Committed to autovect branch.
>
> If I understand the code correctly, this currently only works on
> powerpc, isn't it (due to the changes to support the new optabs only
> going into altivec.md) ?
Right. Four new optabs have to be implemented in order to support this
feature:
vec_extract_even_optab, vec_extract_odd_optab, vec_interleave_high_optab,
and vec_interleave_low_optab.
We implemented them only for Altivec.
> So I do not need to try this at home - x86_64-unknown-linux-gnu ?
>
:-) No.
> Thanks,
>
> --
> Toon Moene, KNMI, The Netherlands
> Phone: +31 30 2206443; e-mail: moene@knmi.nl
Ira