RFR: 8303417: RISC-V: Merge vector instructs with similar match rules

[Dingli Zhang]

On Tue, 30 May 2023 12:11:43 GMT, Yanhong Zhu <yzhu at openjdk.org> wrote:

> Merge vector instructs with similar match rules in riscv_v.ad.
> 
> Tier 1~3 passed on QEMU with RVV supported.

LGTM, thanks!

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Marked as reviewed by dzhang (Author).

PR Review: https://git.openjdk.org/jdk/pull/14214#pullrequestreview-1453494850