RFR: 8264649: runtime/InternalApi/ThreadCpuTimesDeadlock.java crash in fastdebug C2 with -XX:-UseTLAB

[Hui Shi]

Detailed analysis in https://bugs.openjdk.java.net/browse/JDK-8264649

Tier1/2 release /fastdebug passed

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Commit messages:
 - 8264649: runtime/InternalApi/ThreadCpuTimesDeadlock.java crash in fastdebug C2 with -XX:-UseTLAB

Changes: https://git.openjdk.java.net/jdk/pull/3336/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3336&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264649
  Stats: 13 lines in 2 files changed: 12 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3336.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3336/head:pull/3336

PR: https://git.openjdk.java.net/jdk/pull/3336