[riscv-port] RFR: 8281967: riscv: Intrinsify bigIntegerLeftShift [v3]

[Taiping Guo]

On Tue, 1 Mar 2022 03:27:46 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Taiping Guo has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   fix typo
>
> src/hotspot/cpu/riscv/stubGenerator_riscv.cpp line 3773:
> 
>> 3771:     }
>> 3772: 
>> 3773:     if (UseRVV) {
> 
> I think we need another option to control this, maybe UseRVVForBigIntegerShiftIntrinsics. So that users can still control whether to enable this intrinsic when RVV is there.

`UseRVVForBigIntegerShiftIntrinsics` option added. Thanks!

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PR: https://git.openjdk.java.net/riscv-port/pull/61