RFR: 8373069: RISC-V: implement GHASH intrinsic [v5]

[duke]

On Mon, 15 Dec 2025 10:53:15 GMT, Anjian Wen <wenanjian at openjdk.org> wrote:

>> support GHASH intrinsic for crypt GCM, which need zvkg extension. 
>> 
>> passed the tests in 
>> test/hotspot/jtreg/compiler/codegen/aes/
>> test/jdk/com/sun/crypto
>
> Anjian Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   delete some redundant assert and modify some format

@Anjian-Wen 
Your change (at version fb0f549fa52739938d5a2607fba4860049e0d74f) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk/pull/28548#issuecomment-3663376150