RFR: 8280007: Enable Neoverse N1 optimizations for Arm Neoverse V1 & N2

[Evgeny Astigeevich]

On Tue, 8 Feb 2022 15:33:20 GMT, Bhavana-Kilambi <duke at openjdk.java.net> wrote:

> As Arm Neoverse V1 and N2s will benefit from the same optimizations as Neoverse N1 does, it should have OnSpinWaitInst/OnSpinWaitInstCount defaults set to "isb"/1 and UseSIMDForMemoryOps default set to true.
> This patch sets these flags accordingly for both V1 and N2 architectures.

Lgtm

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Marked as reviewed by eastig at github.com (no known OpenJDK username).

PR: https://git.openjdk.java.net/jdk/pull/7383