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

Christian Thalinger christian.thalinger at oracle.com
Tue Mar 17 21:00:30 UTC 2015

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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