[patch] Prefetch: adjust prefetch_mod to unroll_factor ratio threshold

[Sebastian Pop]

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.

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