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Re: VIS2 pattern review

From: Richard Henderson <rth at redhat dot com>
To: David Miller <davem at davemloft dot net>
Cc: gcc at gcc dot gnu dot org
Date: Thu, 13 Oct 2011 12:02:09 -0700
Subject: Re: VIS2 pattern review
References: <4E96358F.30405@redhat.com> <20111013.142636.1859659747859622111.davem@davemloft.net>

On 10/13/2011 11:26 AM, David Miller wrote:
> Therefore, I think this "16 x 16 multiply" operation isn't the kind
> you think it is, and it's therefore not appropriate to use this in the
> compiler for vector multiplies.

Ah, I see the magic word in the docs now: "fixed point".
I.e. class MODE_ACCUM not class MODE_INT.

I guess that's a totally different kind of support that could be added.

r~

References:
- VIS2 pattern review
  - From: Richard Henderson
- Re: VIS2 pattern review
  - From: David Miller

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