[vectorIntrinsics] RFR: 8283598: [vectorapi] Add new vector operation for compress bits

[Sandhya Viswanathan]

On Thu, 31 Mar 2022 17:25:09 GMT, Smita Kamath <svkamath at openjdk.org> wrote:

>> Here's the issue for scalar compress and expand bits [JDK-8283892](https://bugs.openjdk.java.net/browse/JDK-8283892)
>
> @PaulSandoz, sounds good.  Thank you.

@smita-kamath Please update the summary at the top of the PR to reflect the latest:
   1. Both compress and expand are implemented
   2. Support for only int/long vectors
Also it will be good to update the title of JDK-8283598 to reflect that expand is also implemented as part of this PR.

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

PR: https://git.openjdk.java.net/panama-vector/pull/184