RFR: 8292898: [vectorapi] Unify vector mask cast operation [v4]

[Xiaohong Gong]

On Wed, 28 Sep 2022 03:31:45 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> common IR changes looks good to me, few more comments related to x86 backend implementation
>
> Hi @jatin-bhateja , the new commit addresses all the comments from your side. Please help to take a look whether it's ok for you. Thanks a lot!

> Hi @XiaohongGong , Thanks!, changes looks good to me, an IR framework test will complement the patch.

Thanks for the review! I will add the test soon!

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PR: https://git.openjdk.org/jdk/pull/10192