[jdk17u-dev] RFR: 8276054: JMH benchmarks for Fences

[Aleksey Shipilev]

Clean backport to improve performance testing.

Additional testing:
 - [ ] Ad-hoc benchmark run

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Commit messages:
 - Backport 5a768f75c9cb013edbf6c61e79820bd180cad4ba

Changes: https://git.openjdk.org/jdk17u-dev/pull/1802/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1802&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8276054
  Stats: 451 lines in 5 files changed: 451 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1802.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1802/head:pull/1802

PR: https://git.openjdk.org/jdk17u-dev/pull/1802