[aarch64-port-dev ] RFR: [8u] JDK-8216350: AArch64: monitor unlock fast path not called

[Andrew Dinn]

Could I please have a review of the following backport to the aarch64
jdk8u-shenandoah repo.

  JIRA:   https://bugs.openjdk.java.net/browse/JDK-8216350
  webrev: http://cr.openjdk.java.net/~adinn/8220668-jdk8u/webrev.00

The original patch failed to apply properly (after adjusting the file
paths) because of 3 minor differences:

  1) jdk8u-shenandoah aarch64.ad had tabs instead of spaces in some
deleted lines
  2) jdk8u-shenandoah aarch64.ad references VM_Version::cpu_cpuFeatures
in both deleted and new lines where upstrema code references
VM_Version::features
  3) jdk8u-shenandoah assembler_aarch64.hpp omits a comment that gets
matched in the upstream code (// rscratch1 is zero)

Testing:
  tier1 tests succeed as before

regards,


Andrew Dinn
-----------
Senior Principal Software Engineer
Red Hat UK Ltd
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