[aarch64-port-dev ] [RFR] [8u] 8u192 AArch64 Support

[Andrew Hughes]

Hi,

The import of 8u192 breaks AArch64 in a couple of places where
port-specific changes are needed.

https://cr.openjdk.java.net/~andrew/shenandoah-8/u192.aarch64/

8160748: [AArch64] Inconsistent types for ideal_reg
8189170: [AArch64] Add option to disable stack overflow checking in
primordial thread for use with JNI_CreateJavaJVM

8160748 is simply the AArch64 chunk of the patch from OpenJDK 10+,
discarded upstream by Oracle in backporting to 8u
8189170 is a simple renaming based on the same change in the PPC code.
The original patch in OpenJDK 10+ doesn't cover the ports, presumably
due to some other refactoring.

The result is tagged aarch64-shenandoah-jdk8u192-b13 to separate it
from the upcoming merge of 8u201. Same change is applied to other
repos, but little point in providing webrevs for those just for that
change.

Ok to push?

Thanks,
-- 
Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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