RFR: 8352065: [PPC64] C2: Implement PopCountVL, CountLeadingZerosV and CountTrailingZerosV nodes [v2]

[Richard Reingruber]

On Fri, 21 Mar 2025 11:04:32 GMT, David Linus Briemann <duke at openjdk.org> wrote:

>> VectorCastL2X was not added due to bad performance and thus the bit count instructions are only vectorized for `int` but not for `long`.
>
> David Linus Briemann has updated the pull request incrementally with one additional commit since the last revision:
> 
>   disable TestVectorPopcountVectorLong on power again

Looks good.
Cheers, Richard.

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Marked as reviewed by rrich (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24064#pullrequestreview-2714053494