[vectorIntrinsics] RFR: Use Integer/Long compress and expand. [v3]

[Sandhya Viswanathan]

On Thu, 21 Apr 2022 01:24:39 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>> Use the Integer/Long compress and expand implementations.
>> 
>> Fix compilation of perf tests for constant shift operations (brought in via merge that does not have perf tests).
>
> Paul Sandoz has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Declare CONST_SHIFT for integral types only

Marked as reviewed by sviswanathan (Committer).

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PR: https://git.openjdk.java.net/panama-vector/pull/194