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Re: CPROP and spec2000 slowdown in mid february

To: Joern Rennecke <amylaar at redhat dot com>
Subject: Re: CPROP and spec2000 slowdown in mid february
From: Richard Henderson <rth at redhat dot com>
Date: Mon, 4 Jun 2001 16:24:15 -0700
Cc: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>, gcc at gcc dot gnu dot org
References: <10106042020.AA00791@vlsi1.ultra.nyu.edu> <200106042033.f54KXpN21700@phal.cambridge.redhat.com>

On Mon, Jun 04, 2001 at 09:33:51PM +0100, Joern Rennecke wrote:
> And finally, we use a different alternative when operand two is zero:
> we use a matching constraint for operand three rather than an earlyclobber
> of operand 0.

Which of course begs the question of why we'd _ever_ be emitting
a shift of count zero.


r~

Follow-Ups:
- Re: CPROP and spec2000 slowdown in mid february
  - From: Joern Rennecke

References:
- Re: CPROP and spec2000 slowdown in mid february
  - From: Richard Kenner
- Re: CPROP and spec2000 slowdown in mid february
  - From: Joern Rennecke

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