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Re: [patch] Improve loop array prefetch for IA-64
- From: Canqun Yang <canqun at yahoo dot com dot cn>
- To: gcc at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: Fri, 2 Jun 2006 19:00:15 +0800 (CST)
- Subject: Re: [patch] Improve loop array prefetch for IA-64
--- Andrey Belevantsev <firstname.lastname@example.org>:
> Canqun Yang wrote:
> > Hi, all
> > This patch results a performance increase of 4% for SPECfp2000 and 13% for NAS benchmark suite
> > Itanium-2 system, respectively. More performance increase is hopeful by further tuning the
> > parameters and improving the prefetch algorithm at tree level.
> Hi Canqun,
> It's great news that you continued to work on prefetching tuning for
> ia64! Do you plan to port your other changes for the old RTL
> prefetching to the tree level?
Yes. But I have no much time to do it now. I am busy for other things.
> > @@ -1985,13 +1985,18 @@
> > ??? This number is bogus and needs to be replaced before the value is
> > actually used in optimizations. */
> I suggest to remove this comment as it has become outdated with your
> patch. Instead you might say how did you choose this particular value
> (and PREFETCH_BLOCK too). Just my 2c.
Please refer to my previous mail and attatched paper.