RFR: 8319716: RISC-V: Add SHA-2 [v6]

[Robbin Ehn]

On Fri, 15 Dec 2023 14:17:01 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

>> Hi, please consider.
>> 
>> Main author is @luhenry, I only fixed some minor things and tested it.
>> 
>> Such as:
>> test/hotspot/jtreg/compiler/intrinsics/sha/
>> test/jdk/java/security/MessageDigest/
>> test/jdk/jdk/security/
>> tier1
>> 
>> And still running some test.
>
> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Removed swap file

Great we could sort that out.
Removed t2 and merge with master.
Passes my testing, doing some extra testing.

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PR Comment: https://git.openjdk.org/jdk/pull/16562#issuecomment-1864045440