RFR: 8320280: RISC-V: Avoid passing t0 as temp register to MacroAssembler::lightweight_lock/unlock [v3]

[Gui Cao]

On Fri, 17 Nov 2023 03:27:54 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Gui Cao has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update several assertions in MacroAssembler::lightweight_lock/unlock
>
> Looks good. Thanks for fixing this.

@RealFYang @robehn Thanks all for the review.

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PR Comment: https://git.openjdk.org/jdk/pull/16703#issuecomment-1819090896