[vectorIntrinsics] RFR: 8253585: Add basic vector mask implementation for Arm SVE [v2]

[Ningsheng Jian]

On Wed, 4 Nov 2020 04:04:08 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> Summary: Add the SVE match rule support for vector mask ops.
>> 
>> ======
>> 
>> Currently the vector mask related operations like vector mask load/store, vector mask compare and vector blend are not supported for Arm SVE. This patch adds the basic backend implementation for them.
>> 
>> BTW, this is a basic version for vector mask operations that does not use the SVE predicate features. And we will make it happen in future.
>
> Xiaohong Gong has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:
> 
>   8253585: Add basic vector mask implementation for Arm SVE

LGTM (I have reviewed it internally).

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PR: https://git.openjdk.java.net/panama-vector/pull/20