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

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/attachments/20150317/356a4947/attachment.html>

More information about the hotspot-compiler-dev mailing list