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Re: [PATCH] Fix PR optimization/11637 (x86)

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Eric Christopher <echristo at redhat dot com>
Cc: Zack Weinberg <zack at codesourcery dot com>,gcc-patches at gcc dot gnu dot org
Date: Tue, 16 Sep 2003 10:28:59 +0200
Subject: Re: [PATCH] Fix PR optimization/11637 (x86)
References: <200309131036.19639.ebotcazou@libertysurf.fr> <200309160807.24777.ebotcazou@libertysurf.fr> <1063698239.18334.12.camel@ghostwheel.sfbay.redhat.com>

> This code hasn't been touched in a long time. I think I missed the first
> part of the conversation (I did a quick look, but all I see is an
> unrelated comment on what looks like another PR), but I'm curious how
> removing the first SET's destination is causing bad code?

There is a REG_EQUAL note on the insn, and it stays there after the second 
SET replaced the first SET in the pattern of the insn.

-- 
Eric Botcazou

Follow-Ups:
- Re: [PATCH] Fix PR optimization/11637 (x86)
  - From: Eric Christopher

References:
- [PATCH] Fix PR optimization/11637 (x86)
  - From: Eric Botcazou
- Re: [PATCH] Fix PR optimization/11637 (x86)
  - From: Eric Botcazou
- Re: [PATCH] Fix PR optimization/11637 (x86)
  - From: Eric Christopher

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