[vectorIntrinsics] RFR: 8258072: Add Reinterpret nodes implementation for Arm SVE [v2]

[Wang Huang]

> Add reduction nodes support for Arm SVE. Add the backend codegen for node like "VectorReinterpret" .
> In this patch, We implement these instructs: 
> *  reinterpret (src == dst)
> *  reinterpretExpand (src < dst)
> *  reinterpretShrink (src > dst)
> At the same time, we fix a bug (JDK-8258989) because it is not merged in panama-vector/vectorIntrinsics.

Wang Huang has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8258072: Add Reinterpret nodes implementation for Arm SVE

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Changes:
  - all: https://git.openjdk.java.net/panama-vector/pull/30/files
  - new: https://git.openjdk.java.net/panama-vector/pull/30/files/64f7e7f9..f1de6a0b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=30&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=30&range=00-01

  Stats: 77 lines in 2 files changed: 5 ins; 39 del; 33 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/30.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/30/head:pull/30

PR: https://git.openjdk.java.net/panama-vector/pull/30