[vectorIntrinsics+mask] RFR: 8272479: Java API and IR changes for masked rearrange operation

[Jatin Bhateja]

On Sat, 14 Aug 2021 21:58:52 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 blending full vector rearrange vector with broadcasted ZERO vector.

Hi @XiaohongGong , your comments addressed.

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PR: https://git.openjdk.java.net/panama-vector/pull/110