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Re: [PATCH] Enabling Software Prefetching by Default at -O3

From: "H.J. Lu" <hjl dot tools at gmail dot com>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: "Fang, Changpeng" <Changpeng dot Fang at amd dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "rguenther at suse dot de" <rguenther at suse dot de>, "sebpop at gmail dot com" <sebpop at gmail dot com>, Zdenek Dvorak <rakdver at kam dot mff dot cuni dot cz>, Maxim Kuvyrkov <maxim at codesourcery dot com>
Date: Tue, 15 Jun 2010 15:55:49 -0700
Subject: Re: [PATCH] Enabling Software Prefetching by Default at -O3
References: <D4C76825A6780047854A11E93CDE84D02F7743@SAUSEXMBP01.amd.com> <AANLkTikYy2MxlIoUyFBLl4Djks77Q5yV2G2nHEzgZyIq@mail.gmail.com> <D4C76825A6780047854A11E93CDE84D02F7744@SAUSEXMBP01.amd.com> <AANLkTimatEg6DTKfNHJqwSQugcsvF_RJ6tF55abmoQwW@mail.gmail.com> <D4C76825A6780047854A11E93CDE84D02F7745@SAUSEXMBP01.amd.com> <4C180305.9030805@codesourcery.com>

On Tue, Jun 15, 2010 at 3:47 PM, Mark Mitchell <mark@codesourcery.com> wrote:
> Fang, Changpeng wrote:
>
>>> Is that rate or speed? I would like to see numbers on Intel Core i7 if you are
>>> proposing enable it by default for x86.
>
> HJ, are you in position to test this on Core i7? ?Since you work at
> Intel, it seems like it might be easier for you to do it than for the
> folks at AMD to do it?

We never tried software prefetch since Intel processors rarely need
it.  We will try it. It will take some times.


-- 
H.J.

Follow-Ups:
- Re: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: Mark Mitchell
- Re: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: H.J. Lu

References:
- [PATCH] Enabling Software Prefetching by Default at -O3
  - From: Fang, Changpeng
- Re: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: H.J. Lu
- RE: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: Fang, Changpeng
- Re: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: H.J. Lu
- RE: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: Fang, Changpeng
- Re: [PATCH] Enabling Software Prefetching by Default at -O3
  - From: Mark Mitchell

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