RFR: 8351140: RISC-V: Intrinsify Unsafe::setMemory [v12]

[Anjian-Wen]

On Tue, 20 May 2025 10:13:29 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Anjian-Wen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   update code for optimize
>
> src/hotspot/cpu/riscv/stubGenerator_riscv.cpp line 1696:
> 
>> 1694:     // One byte misalignment happens.
>> 1695:     __ test_bit(t0, dest, 0);
>> 1696:     __ beqz(t0, L_skip_align1);
> 
> Can we use `tmp_reg` in places where `t0` is used in this function?

Thanks for the advice, fixed it all above!

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/23890#discussion_r2097888061