[jdk21u-dev] RFR: 8342701: [PPC64] TestOSRLotsOfLocals.java crashes

[Martin Doerr]

Clean backport of [JDK-8342701](https://bugs.openjdk.org/browse/JDK-8342701).

-------------

Commit messages:
 - Backport 3bba0f3dc8faf83a3aadcd704ae2ae4967e6daa4

Changes: https://git.openjdk.org/jdk21u-dev/pull/1076/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1076&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342701
  Stats: 19 lines in 1 file changed: 16 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1076.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1076/head:pull/1076

PR: https://git.openjdk.org/jdk21u-dev/pull/1076