RFR: 8329887: RISC-V: C2: Support Zvbb Vector And-Not instruction [v8]

[Anjian-Wen]

On Sat, 12 Apr 2025 08:02:21 GMT, Anjian-Wen <duke at openjdk.org> wrote:

>> support Zvbb Vector And-Not vandn.vv (with and without masked) match rule and add new test in jtreg
>
> Anjian-Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix test bug

Appreciate the careful review @RealFYang , I will push a quick modify

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PR Comment: https://git.openjdk.org/jdk/pull/24129#issuecomment-2800764206