[aarch64-port-dev ] RFR: [8u] JDK-8219006: AArch64: Register corruption in slow subtype check

[Andrew Dinn]

I would like permission to backport JDK-8219006 to the aarch64
jdk8u-shenandoah repo.

  JIRA:   https://bugs.openjdk.java.net/browse/JDK-8219006

The upstream jdk11u patch applies cleanly

Why:
The patch does not affect product code but it can cause a crash in debug
builds.

Testing:
tier1 tests complete as before (modulo two tests that timed out before
patching but completed successfully within the allotted time after
patching -- I was running other jobs in the before case).

regards,


Andrew Dinn
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Senior Principal Software Engineer
Red Hat UK Ltd
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