RFR: 8369423: Reduce execution time of testlibrary_tests/ir_framework/tests/TestDFlags.java [v2]

[Christian Hagedorn]

> The test `testlibrary_tests/ir_framework/tests/TestDFlags.java` runs 11 separate IR framework runs by enabling only a single property/D flag in each run. This seems like a waste of resources for just a sanity run (we don't do any additional verification). Moreover, some newer property flags are missing.
> 
> I suggest to cut it down to 2 runs: 
> - IR verification enabled (i.e. -DVerifyIR=true, which is the default) 
> - IR verification disabled (i.e. -DVerifyIR=false)
> 
> In both runs we simultaneously set all property flags to some non-default value as a sanity test.
> 
> This reduces the test execution time from around 20-30s down to 3-4s.
> 
> Thanks,
> Christian

Christian Hagedorn has updated the pull request incrementally with one additional commit since the last revision:

  update Damon

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27690/files
  - new: https://git.openjdk.org/jdk/pull/27690/files/976200be..a0c779f6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27690&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27690&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/27690.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27690/head:pull/27690

PR: https://git.openjdk.org/jdk/pull/27690