RFR: 8331577: RISC-V: C2 CountLeadingZerosV [v2]

[Fei Yang]

On Thu, 9 May 2024 12:00:22 GMT, Hamlin Li <mli at openjdk.org> wrote:

> > > BTW, I will also re-visit all existing masked version instructions to make sure it works as expected. tracked by https://bugs.openjdk.org/browse/JDK-8331992

Sorry for not being accurate. In fact, I mean requirement at the Java level. Why should we keep the origin value of inactive elements from the input vector? I didn't notice such a requirement.

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PR Comment: https://git.openjdk.org/jdk/pull/19153#issuecomment-2102549043