[jdk16] RFR: 8259757: add a regression test for 8259353 and 8259601 [v2]

[Igor Ignatyev]

> Hi all,
> 
> could you please review this small test-only patch which adds a regression test for [8259353](https://bugs.openjdk.java.net/browse/JDK-8259353) and [8259601](https://bugs.openjdk.java.net/browse/JDK-8259353)?
> 
> testing:
> - [x] `test/hotspot/jtreg/compiler/vectorapi/Test8259353.java` against jdk-16+26 (which doesn't have fixes) : failed, as expected
> - [x] `test/hotspot/jtreg/compiler/vectorapi/Test8259353.java` multiple times against jdk-16+32 : passed
> 
> Thanks,
> -- Igor

Igor Ignatyev has updated the pull request incrementally with one additional commit since the last revision:

  fix copyright year

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

Changes:
  - all: https://git.openjdk.java.net/jdk16/pull/120/files
  - new: https://git.openjdk.java.net/jdk16/pull/120/files/8b78323f..3d7e2e46

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk16&pr=120&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk16&pr=120&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk16/pull/120.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/120/head:pull/120

PR: https://git.openjdk.java.net/jdk16/pull/120