This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [patch] Disable tree-ssa DSE for now

From: Jeffrey A Law <law at redhat dot com>
To: Daniel Berlin <dberlin at dberlin dot org>
Cc: Diego Novillo <dnovillo at redhat dot com>, Steven Bosscher <stevenb at suse dot de>, gcc-patches at gcc dot gnu dot org
Date: Tue, 18 Jan 2005 23:47:22 -0700
Subject: Re: [patch] Disable tree-ssa DSE for now
Organization: Red Hat, Inc
References: <200501190226.13540.stevenb@suse.de> <41EDCA24.3040708@redhat.com> <Pine.LNX.4.60.0501182204250.25784@dberlin.org>
Reply-to: law at redhat dot com

On Tue, 2005-01-18 at 22:09 -0500, Daniel Berlin wrote:

> The algorithm DSE is using could probably be replaced with a modified 
> version of GVN-PRE (we need a kill set, but we need this for load PRE 
> anyway), on the reverse flowgraph.
Yes.  DSE is basically traditional redundancy elimination run on the
reverse flowgraph.  The stuff we do now is relatively weak compared
to what could be down with GVN.

jeff

References:
- [patch] Disable tree-ssa DSE for now
  - From: Steven Bosscher
- Re: [patch] Disable tree-ssa DSE for now
  - From: Diego Novillo
- Re: [patch] Disable tree-ssa DSE for now
  - From: Daniel Berlin

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]