RFR(L): 8074981 (Integer/FP scalar reduction optimization )

[Christian Thalinger]

> On Mar 16, 2015, at 2:40 PM, Berg, Michael C <michael.c.berg at intel.com> wrote:
> 
> Hi All,
>  
> We would like to contribute the Integer/FP scalar reduction optimization from Intel.
> The contribution is referenced as Bug ID 8074981 as a performance enhancement.
>  
> Please review this patch:
> Bug-id: https://bugs.openjdk.java.net/browse/JDK-8074981 <https://bugs.openjdk.java.net/browse/JDK-8074981>
> webrev: https://bugs.openjdk.java.net/secure/attachment/26101/webrev.zip <https://bugs.openjdk.java.net/secure/attachment/26101/webrev.zip>
>  
> The optimization achieves as much as 2.3x on integer reductions and supports float and double precision optimizations
> which also have significant optimization uplift an obey strict fp constraints.
>  
> Nils Eliasson has offered to sponsor this patch.

Nils, can you upload the webrev to your account so we can review it more easily?

>  
> Thanks,
>  
> -Michael

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