RFR: 8318218: RISC-V: C2 CompressBits [v3]

[Hamlin Li]

On Wed, 8 Nov 2023 09:14:04 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> src/hotspot/cpu/riscv/riscv.ad line 1901:
>> 
>>> 1899: 
>>> 1900:     case Op_EncodeISOArray:
>>> 1901:       return UseRVV && SpecialEncodeISOArray;
>> 
>> Seems that we can remove this extra check for `SpecialEncodeISOArray` (and related code at [1]) and group those 5 cases (which return UseRVV) together. 
>> 
>> [1] https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/riscv/vm_version_riscv.cpp#L290-L292
>
> I will do it in another pr later.

It's in the https://github.com/openjdk/jdk/pull/16580

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PR Review Comment: https://git.openjdk.org/jdk/pull/16481#discussion_r1387805436