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Re: [patch] Prefetch: adjust prefetch_mod to unroll_factor ratio threshold

From: Sebastian Pop <sebpop at gmail dot com>
To: Zdenek Dvorak <rakdver at kam dot mff dot cuni dot cz>
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>
Date: Wed, 9 Jun 2010 17:53:26 -0500
Subject: Re: [patch] Prefetch: adjust prefetch_mod to unroll_factor ratio threshold
References: <D4C76825A6780047854A11E93CDE84D02F771F@SAUSEXMBP01.amd.com> <20100607202504.GB13470@kam.mff.cuni.cz>

Sebastian Pop
--
AMD / Open Source Compiler Engineering / GNU Tools




On Mon, Jun 7, 2010 at 15:25, Zdenek Dvorak <rakdver@kam.mff.cuni.cz> wrote:
> Hi,
>
>> Attached is the patch to adjust the prefetch_mod to unroll_factor ratio threshold
>> from 8 to 4. In certain sense, this adjustment means that we do not generate a prefetch
>> if it introduces 7 or more useless prefetches.
>>
>> This patch improves 416.gamess by 2~3% on amd-linux64 systems.
>>
>> patch passed bootstrapping and gcc regression tests.
>>
>> Is it OK for the trunk?
>
> OK,
>

Committed r160514.

Sebastian

References:
- [patch] Prefetch: adjust prefetch_mod to unroll_factor ratio threshold
  - From: Fang, Changpeng
- Re: [patch] Prefetch: adjust prefetch_mod to unroll_factor ratio threshold
  - From: Zdenek Dvorak

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