[jdk11u-dev] RFR: 8280007: Enable Neoverse N1 optimizations for Arm Neoverse V1 & N2

[Liang Mao]

On Wed, 3 Jan 2024 09:23:53 GMT, Andrew Haley <aph at openjdk.org> wrote:

> > > Have a look at "Fix Approvals" https://wiki.openjdk.org/display/JDKUpdates/JDK11u and see what you think. I'm not sure if this one qualifies.
> > 
> > 
> > I believe this backport is worth considering. JDK11 is still the most used JDK version and Arm Neoverse servers grow rapidly. And this patch is quite safe.
> 
> Understood, but that only addresses the "is of low risk" part of the requirement, but not the "substantial benefit to OpenJDK 11u users" part. What is the substantial benefit?

UseSIMDForMemoryOps takes great advantage of ARM Neoverse on array copy ops which is substantial to applications on JDK11 running on ARM Neoverse servers.

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PR Comment: https://git.openjdk.org/jdk11u-dev/pull/2425#issuecomment-1875077140