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Re: Fix PR rtl-optimization/34035

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: David Edelsohn <dje at watson dot ibm dot com>
Cc: gcc-patches at gcc dot gnu dot org, "Steven Bosscher" <stevenb dot gcc at gmail dot com>
Date: Mon, 12 Nov 2007 23:14:19 +0100
Subject: Re: Fix PR rtl-optimization/34035
References: <200711122249.46295.ebotcazou@libertysurf.fr> <200711122201.lACM1BLj028066@makai.watson.ibm.com>

> 	Why?  How about some justification for your assertion.

It's the fastest mode of cleanup_cfg and purging dead edges can lead to 
opportunities of CFG simplification.  And it's the canonical cleanup routine 
at the end of RTL passes.  Note that it is only invoked on demand here.

-- 
Eric Botcazou

References:
- Re: Fix PR rtl-optimization/34035
  - From: Eric Botcazou
- Re: Fix PR rtl-optimization/34035
  - From: David Edelsohn

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