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Re: Question about simplify_cond_and_lookup_avail_expr

From: Steven Bosscher <stevenb at suse dot de>
To: gcc at gcc dot gnu dot org
Cc: Devang Patel <dpatel at apple dot com>, Andrew Pinski <pinskia at physics dot uc dot edu>, law at redhat dot com
Date: Mon, 29 Nov 2004 21:06:36 +0100
Subject: Re: Question about simplify_cond_and_lookup_avail_expr
Organization: SUSE Labs
References: <10411241707.AA28576@vlsi1.ultra.nyu.edu> <13142BE7-3E87-11D9-941D-000A95D692F4@physics.uc.edu> <13E0E721-4241-11D9-8A9D-000393A91CAA@apple.com>

On Monday 29 November 2004 20:58, Devang Patel wrote:
> On Nov 24, 2004, at 6:09 PM, Andrew Pinski wrote:
> > No this is in the wrong place, this should be done by a tree combiner.
>
> Tree combiner is mentioned many times but I do not understand its role
> clearly. What is it suppose to do?

Much like combine.c, only working on tree-ssa.  Basically it is
a very heavy form of forward propagation.

Gr.
Steven

References:
- Question about simplify_cond_and_lookup_avail_expr
  - From: Richard Kenner
- Re: Question about simplify_cond_and_lookup_avail_expr
  - From: Andrew Pinski
- Re: Question about simplify_cond_and_lookup_avail_expr
  - From: Devang Patel

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