[jdk18u] RFR: 8277893: Arraycopy stress tests

Mon Mar 14 09:14:06 UTC 2022

Clean backport to improve testing.

Additional testing:
 - [x] Linux x86_64 fastdebug passes `hotspot_compiler_arraycopy`

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Commit messages:
 - Backport 29bd73638a22d341767a1266723a7d7263e17093

Changes: https://git.openjdk.java.net/jdk18u/pull/44/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=44&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277893
  Stats: 1154 lines in 12 files changed: 1153 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/44.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/44/head:pull/44

PR: https://git.openjdk.java.net/jdk18u/pull/44