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Re: [rtl-optimization] Improve Data Prefetch for IA-64

From: Steven Bosscher <stevenb at suse dot de>
To: Canqun Yang <canqun at nudt dot edu dot cn>
Cc: gcc at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org, Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
Date: Sun, 27 Mar 2005 12:13:38 +0200
Subject: Re: [rtl-optimization] Improve Data Prefetch for IA-64
Organization: SUSE Labs
References: <20050326012212.DCE335B9AC@ds20.nudt.edu.cn> <200503270352.39971.stevenb@suse.de> <20050327024535.714B15C265@ds20.nudt.edu.cn>

On Sunday 27 March 2005 04:45, Canqun Yang wrote:
> Another question is why the new RTL loop-unroller does
> not support giv splitting.

Apparently because for most people it is not a problem that it does
not do it, and while you have indicated earlier that it may be useful
for you, you have neither tried to implement it yourself, nor provided
a test case to PR20376.

FWIW you could try -fweb and see if it does what you want.  And if it
does, you could write a limited webizer patch that works on just loop
bodies after unrolling.

Gr.
Steven

Follow-Ups:
- Re: [rtl-optimization] Improve Data Prefetch for IA-64
  - From: Zdenek Dvorak

References:
- [rtl-optimization] Improve Data Prefetch for IA-64
  - From: Canqun Yang
- Re: [rtl-optimization] Improve Data Prefetch for IA-64
  - From: Steven Bosscher
- Re: [rtl-optimization] Improve Data Prefetch for IA-64
  - From: Canqun Yang

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