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Re: My opinions on tree-level and RTL-level optimization

From: Steven Bosscher <stevenb at suse dot de>
To: Daniel Berlin <dberlin at dberlin dot org>
Cc: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>, gcc at gcc dot gnu dot org
Date: Mon, 18 Apr 2005 21:06:34 +0200
Subject: Re: My opinions on tree-level and RTL-level optimization
Organization: SUSE Labs
References: <10504181504.AA14165@vlsi1.ultra.nyu.edu> <Pine.LNX.4.60.0504181218110.13048@dberlin.org>

On Monday 18 April 2005 18:28, Daniel Berlin wrote:
> The correct viewpoint is "we shouldn't remove CSE until every *profitable*
> transformation it makes is subsumed by something else".
>
> Otherwise, you've started with the unproven assumption that every
> transformation CSE makes is profitable.

Well, obviously we are having this discussion because a patch got
blocked on this very assumption.

Gr.
Steven

References:
- Re: My opinions on tree-level and RTL-level optimization
  - From: Richard Kenner
- Re: My opinions on tree-level and RTL-level optimization
  - From: Daniel Berlin

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