RFR: 8252114: Windows-AArch64: Enable and test ZGC and ShenandoahGC [v2]

[Stefan Karlsson]

On Thu, 10 Sep 2020 15:30:04 GMT, Monica Beckwith <mbeckwit at openjdk.org> wrote:

>> ZGC and ShenandoahGC are two low latency GCs in OpenJDK HotSpot. We will enable and run microbenchmarks and scaling
>> tests for both. After enabling, I ran JTRegs, a few micros, and SPECJBB2015 (heap and multi-JVM) scaling tests for both
>> the GCs.
>
> Monica Beckwith has updated the pull request incrementally with one additional commit since the last revision:
> 
>   x$OPENJDK_TARGET_CPU" = "xaarch64"
>   
>   Incorporating Aleksey's comments to incorporate 'x'

Marked as reviewed by stefank (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/97