RFR: 8265705: aarch64: KlassDecodeMovk mode broken

[Thomas Stuefe]

Hi,

may I please have a review for this aarch64-specific fix? Details see JBS issue and code comment.

I manually tested that this fix works. Patch includes a repro case.

Cheers, Thomas

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Commit messages:
 - start

Changes: https://git.openjdk.java.net/jdk/pull/3968/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3968&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8265705
  Stats: 44 lines in 2 files changed: 27 ins; 0 del; 17 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3968.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3968/head:pull/3968

PR: https://git.openjdk.java.net/jdk/pull/3968