[jdk17u] RFR: 8274773: [TESTBUG] UnsafeIntrinsicsTest intermittently fails on weak memory model platform

[Martin Doerr]

Clean backport of JDK-8274773.

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Commit messages:
 - Backport 49f8ce6e9c797cd11ea586e3cf87398888bc8cf1

Changes: https://git.openjdk.java.net/jdk17u/pull/194/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=194&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274773
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/194.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/194/head:pull/194

PR: https://git.openjdk.java.net/jdk17u/pull/194