Re: [AVX]: Add some 265bit AVX patterns

[Andrew Pinski <pinskia at gmail dot com>]

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On Apr 9, 2008, at 22:51, "H.J. Lu" <hjl.tools@gmail.com> wrote:

> On Thu, Apr 10, 2008 at 07:27:17AM +0200, Uros Bizjak wrote:
> > Hello!
> >
> > > Index: gcc/config/i386/sse.md
> > > ===================================================================
> > > --- gcc/config/i386/sse.md    (.../fsf/trunk)    (revision 2097)
> > > +++ gcc/config/i386/sse.md    (.../branches/avx)    (revision 2097)
> >
> > What do you think about introducing avx.md instead of adding AVX
> > patterns to sse.md? IMO, avx.md will be growing in the future.
>
> AVX is backward compatible with SSE. For each SSE intruction, there
> is an AVX version. Putting the AVX pattern before the corresponding
> SSE one in sse.md means we don't have to change any SSE patterns.
> Otherwise, we have to add !TARGET_AVX in every SSE pattern. I don't
> mind to do it this way if it is preferred.

Can't you include avx.md first?

Thanks,
Andrew Pinski