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Re: Combine deletes non noop insns

From: Richard Henderson <rth at redhat dot com>
To: law at redhat dot com
Cc: John David Anglin <dave at hiauly1 dot hia dot nrc dot ca>, gcc at gcc dot gnu dot org
Date: Tue, 10 Sep 2002 17:03:46 -0700
Subject: Re: Combine deletes non noop insns
References: <20020910184157.GB18949@redhat.com> <200209101918.g8AJIHL11098@porcupine.slc.redhat.com>

On Tue, Sep 10, 2002 at 01:18:17PM -0600, Jeff Law wrote:
>  >This seems odd to me.  Inserting data into the ignored 
>  >portion of a paradoxical subreg?
> Regardless, we shouldn't have zapped the following store (insn 43),
> at least that's the way it looks from the information John posted.

Yes, we could, if combine proves that reg 125 is unchanged
from when it was loaded.


r~

Follow-Ups:
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References:
- Re: Combine deletes non noop insns
  - From: Richard Henderson
- Re: Combine deletes non noop insns
  - From: Jeff Law

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