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

[Goetz Lindenmaier]

On Tue, 2 Jan 2024 02:45:29 GMT, Liang Mao <lmao at openjdk.org> wrote:

> Backport of JDK-8280007. The change should be enabled in JDK11 better performance on Neoverse V1/N1/N2. It is quite safe for existing in upstream and 17u for years.
> 
> Additional testing: aarch64 server ARM Neoverse N2 release/fastdebug tier1

Please enable the GHA tests for the jdk11u-dev repo and restart the tests.
You can restart them by merging head.

Given the fact this runs live at Alibaba it should be tested sufficiently to consider approval for 11, although this is a stable release and the change an optimization.  Disabling it again is simple in case it actually brings problems.

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PR Comment: https://git.openjdk.org/jdk11u-dev/pull/2425#issuecomment-1874972366
PR Comment: https://git.openjdk.org/jdk11u-dev/pull/2425#issuecomment-1874973781