RFR: 8298075: RISC-V: Implement post-call NOPs [v3]

[Xiaolin Zheng]

On Tue, 6 Dec 2022 07:47:46 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Xiaolin Zheng has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Better to remove the ASSERT for we already use assert()
>
> src/hotspot/cpu/riscv/nativeInst_riscv.cpp line 448:
> 
>> 446: 
>> 447: int NativePostCallNop::displacement() const {
>> 448:   // discard the high 32-bit
> 
> Suggestion: // Discard the high 32 bits

Thank you - done.

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PR: https://git.openjdk.org/jdk/pull/11502