RFR: 8308915: RISC-V: Improve temporary vector register usage avoiding the use of v0 [v2]

[Dingli Zhang]

On Fri, 26 May 2023 09:41:19 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Dingli Zhang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix comment
>
> Marked as reviewed by fyang (Reviewer).

@RealFYang @yhzhu20 Thanks for the review!

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PR Comment: https://git.openjdk.org/jdk/pull/14166#issuecomment-1566339436