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Re: [4.1] Fix PR rtl-optimization/29329

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Richard Sandiford <richard at codesourcery dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Wed, 24 Jan 2007 14:46:49 +0100
Subject: Re: [4.1] Fix PR rtl-optimization/29329
References: <200701212339.22939.ebotcazou@libertysurf.fr> <873b60akys.fsf@firetop.home>

> I'm probably misunderstanding something here, but doesn't that mean you
> end up with a REG_DEAD note for register 107 attached to an insn that
> doesn't actually use register 107?

No, distribute_notes scans the insn chain and punts.

> I thought the correct fix would be to cause the life info to be updated.

That's what happens eventually, yes.

-- 
Eric Botcazou

Follow-Ups:
- Re: [4.1] Fix PR rtl-optimization/29329
  - From: Richard Sandiford

References:
- [4.1] Fix PR rtl-optimization/29329
  - From: Eric Botcazou
- Re: [4.1] Fix PR rtl-optimization/29329
  - From: Richard Sandiford

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