[vectorIntrinsics+mask] RFR: 8273264: AArch64: [vector] Add missing rules for VectorMaskCast [v4]

[Eric Liu]

> This patch
> 1. Adds missing rules for VectorMaskCast for compatible species, E.g.
>    ByteVector.SPECIES_64 --> ShortVector.SPECIES_128
> 2. Fixes a matching failure on AArch64.
> 
> The performance improves about 60% compared with the unintrinsified
> version.

Eric Liu has updated the pull request incrementally with one additional commit since the last revision:

  fix comment
  
  Change-Id: I01670a0e4a8df4f3a9a62b779ca5659863ec05d9

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

Changes:
  - all: https://git.openjdk.java.net/panama-vector/pull/124/files
  - new: https://git.openjdk.java.net/panama-vector/pull/124/files/624e7239..14cecf97

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=124&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=124&range=02-03

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/124.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/124/head:pull/124

PR: https://git.openjdk.java.net/panama-vector/pull/124