RFR: 8302908: RISC-V: Support masked vector arithmetic instructions for Vector API [v18]

[Dingli Zhang]

On Mon, 17 Apr 2023 13:15:03 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

>> Dingli Zhang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Simplify some arithmetic mask nodes
>
> src/hotspot/cpu/riscv/riscv.ad line 1937:
> 
>> 1935:     case Op_OrVMask:
>> 1936:     case Op_LoadVector:
>> 1937:         opcode = Op_LoadVectorMasked;
> 
> There is no `break` before `Op_LoadVector`, then all `opcode` matched before `Op_LoadVector` will be assigned to `Op_LoadVectorMasked`.
> Is this as expected?

Fixed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/12682#discussion_r1168757392