RFR: 8342775: [Graal] java/util/concurrent/locks/Lock/OOMEInAQS.java fails OOME thrown from the UncaughtExceptionHandler [v2]

[Tom Rodriguez]

> Deoptimization with escape analysis can fail when trying to rematerialize objects as described in JDK-8227309.  In this test this can happen in Xcomp mode in the framework of the test resulting in a test failure.  Making the number of threads non-final avoids scalar replacement and thus the OOM during deopt.

Tom Rodriguez has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - adjust OOMEInStampedLock.java too
 - Merge branch 'master' into tkr-oomeinaqs-ea
 - 8342775: [Graal] java/util/concurrent/locks/Lock/OOMEInAQS.java fails OOME thrown from the UncaughtExceptionHandler

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21745/files
  - new: https://git.openjdk.org/jdk/pull/21745/files/5c105736..98f63ef0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21745&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21745&range=00-01

  Stats: 676957 lines in 10197 files changed: 356680 ins; 262882 del; 57395 mod
  Patch: https://git.openjdk.org/jdk/pull/21745.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21745/head:pull/21745

PR: https://git.openjdk.org/jdk/pull/21745