[vectorIntrinsics] RFR: 8253680: Vector API VectorMask and VectorSpecies tests for coverage

[Sandhya Viswanathan]

On Fri, 25 Sep 2020 23:22:25 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

> 8253680: Vector API VectorMask and VectorSpecies tests for coverage

This patch adds the following tests to increase code coverage:
 VectorMask methods (eq, equals, fromLong, hashCode, indexInRange, lastTrue, toLong, trueCount)
 VectorSpecies methods (loopBound)

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PR: https://git.openjdk.java.net/panama-vector/pull/9