RFR: 8256973: Intrinsic creation for VectorMask query (lastTrue, firstTrue, trueCount) APIs [v6]

[Jie Fu]

On Wed, 19 May 2021 07:23:28 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> Jatin, the final commit erroneously contains `mask.incr` file. Please, remove it.

PR: https://github.com/openjdk/jdk/pull/4107

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PR: https://git.openjdk.java.net/jdk/pull/3916