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Re: Fix DCE for GVN-PRE

From: Diego Novillo <dnovillo at redhat dot com>
To: Daniel Berlin <dberlin at dberlin dot org>
Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Steven Bosscher <stevenb at suse dot de>
Date: Fri, 11 Jun 2004 15:27:56 -0400
Subject: Re: Fix DCE for GVN-PRE
Organization: Red Hat Canada
References: <200406110147.48613.stevenb@suse.de> <1086912543.22854.280.camel@localhost.localdomain> <7383B440-BBC6-11D8-B981-000A95DA505C@dberlin.org>

On Fri, 2004-06-11 at 12:43, Daniel Berlin wrote:

> So by the time we got to CD-DCE, the phi arg edge led to newly created 
> block 3 (which had a predecessor of -1), instead of block -1.
> 
> GVN-PRE doesn't do this because it doesn't have to.
> 
Ah, thanks.  The patch is OK then.


Diego.

References:
- Fix DCE for GVN-PRE
  - From: Steven Bosscher
- Re: Fix DCE for GVN-PRE
  - From: Diego Novillo
- Re: Fix DCE for GVN-PRE
  - From: Daniel Berlin

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