RFR: 8345125: Aarch64: Add aarch64 backend for Float16 scalar operations [v4]

[duke]

On Fri, 25 Apr 2025 08:33:16 GMT, Bhavana Kilambi <bkilambi at openjdk.org> wrote:

>> This patch adds aarch64 backend for scalar FP16 operations namely - add, subtract, multiply, divide, fma, sqrt, min and max.
>
> Bhavana Kilambi has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update asmtest.out.h to keep it consistent with aarch64-asmtest.py

@Bhavana-Kilambi 
Your change (at version 6a49a11d61a501a2b2cbe715dff078a2a0b41a76) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk/pull/23748#issuecomment-2830767475