RFR: 8319716: RISC-V: Add SHA-2 [v5]

[Robbin Ehn]

On Tue, 28 Nov 2023 14:16:37 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

>> We don't either have such hardware, we simulate via gem5.
>> Ventana v2 should have 15 wide pipeline with RVV 1.0 how knows how this will execute on such :)
>> 
>> As we don't know I think you are correct in we should write the most readable version first.
>> And later we can apt these for hwprobe triplet of vendor/arch/impl if we think that it's worth it.
>
> Not yet addressed.

As I don't have access to these instruction in performance simulator.
I'll leave this as is, since now 256/512 are identical in that regard.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16562#discussion_r1427851619