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Re: Variable Expansion Optimization

From: Steven Bosscher <stevenb at suse dot de>
To: Michael Matz <matz at suse dot de>
Cc: Revital Eres <ERES at il dot ibm dot com>, gcc at gcc dot gnu dot org,Ayal Zaks <ZAKS at il dot ibm dot com>, Mircea Namolaru <NAMOLARU at il dot ibm dot com>
Date: Mon, 16 Aug 2004 09:57:11 +0200
Subject: Re: Variable Expansion Optimization
Organization: SUSE Labs
References: <OF36228DA4.E6F932AC-ONC2256EF1.002536A1-C2256EF1.0038DB12@il.ibm.com> <200408151338.59404.stevenb@suse.de> <Pine.LNX.4.58.0408160945410.7004@wotan.suse.de>

On Monday 16 August 2004 09:50, Michael Matz wrote:
> Hi,
>
> On Sun, 15 Aug 2004, Steven Bosscher wrote:
> > Hmm, I guess you're going to have carefully analyze what the
> > effects of such a transformation are on register pressure.
>
> Yes.  But note that this transformation mainly helps an autovectorizer.

Not in this case, it doesn't.  The current proposal is to do this
transformation on RTL.  The vectorizer runs on trees.

Gr.
Steven

Follow-Ups:
- Re: Variable Expansion Optimization
  - From: Michael Matz

References:
- Variable Expansion Optimization
  - From: Revital Eres
- Re: Variable Expansion Optimization
  - From: Steven Bosscher
- Re: Variable Expansion Optimization
  - From: Michael Matz

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