RFR: 8339698: x86 unused andw/orw/xorw/addw encoding could be removed [v2]

[Sandhya Viswanathan]

On Mon, 9 Sep 2024 17:53:45 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Good.
>
>> I am ok either way, removing these instructions or fixing the encoding. @vnkozlov Please let me know your thoughts.
> 
> Remove them. Check `addw(Register dst, Register src)` - I think it is not used too.
> 
> All these instructions were added for first JEP 8223347: Integration of Vector API (Incubator)
> May be there were experiments with using them during development.

Thanks a lot @vnkozlov.

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PR Comment: https://git.openjdk.org/jdk/pull/20901#issuecomment-2338953775