[jdk21u-dev] RFR: 8314838: 3 compiler tests ignore vm flags

[Goetz Lindenmaier]

I backport this to keep the 21u test suite up-to-date. This will simplify future test backports.

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Commit messages:
 - Backport ab6a87e6705ef7d431ac2955e8501426344a4e1c

Changes: https://git.openjdk.org/jdk21u-dev/pull/38/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=38&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314838
  Stats: 40 lines in 4 files changed: 9 ins; 14 del; 17 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/38.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/38/head:pull/38

PR: https://git.openjdk.org/jdk21u-dev/pull/38