[jdk17] RFR: 8268966: AArch64: 'bad AD file' in some vector conversion tests

[Eric Liu]

JVM crashes with 'bad AD file' on some vector api test cases with
'Xcomp' option. Further analysis shows that, there are some missing
rules for vector conversion. Since we are now in jdk 17 RDP 1, it would
be better to mark them as unsupported for now and add match rules in
future. Test cases also added to verify the conversion between types.

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Commit messages:
 - 8268966: AArch64: 'bad AD file' in some vector conversion tests

Changes: https://git.openjdk.java.net/jdk17/pull/211/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=211&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268966
  Stats: 1031 lines in 3 files changed: 1028 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/211.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/211/head:pull/211

PR: https://git.openjdk.java.net/jdk17/pull/211