[vectorIntrinsics+mask] RFR: 8271273: Java API and IR changes for masked compare operation [v2]

[Jatin Bhateja]

On Tue, 27 Jul 2021 10:37:27 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> - Re-organized the Java API implementation to use one common entry point of masked/non-masked vector compare operation.
>> - Intrinsic side changes to absorb newly passed mask if target support predicated instructions else handled appropriately by performing vector AND b/w comparison result and explicit mask.
>
> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8271273: Review comments resolution.

@Reviewers , please let me know if its good to integrate now.

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PR: https://git.openjdk.java.net/panama-vector/pull/103