RFR: 8292203: AArch64: Represent Registers as values [v2]

[Vladimir Ivanov]

On Mon, 15 Aug 2022 10:26:07 GMT, Quan Anh Mai <duke at openjdk.org> wrote:

>> Vladimir Ivanov has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:
>> 
>>  - Merge branch 'master' into rwrapper.aarch64
>>  - 8292203: AArch64: Represent Registers as values
>>  - cleanups
>>  - x86: Register class wrappers
>
> src/hotspot/cpu/aarch64/register_aarch64.hpp line 39:
> 
>> 37:   int _encoding;
>> 38: 
>> 39:   constexpr Register(int encoding, bool unused) : _encoding(encoding) {}
> 
> Why do we need unused here? If the intention is to prevent implicit conversion from `int` to `Register` then you can mark the constructor as `explicit`. Thanks.

Good point. Fixed.

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PR: https://git.openjdk.org/jdk/pull/9826