RFR: 8334999: RISC-V: implement AES single block encryption/decryption intrinsics [v3]

[Fei Yang]

On Mon, 8 Jul 2024 15:24:13 GMT, ArsenyBochkarev <duke at openjdk.org> wrote:

>> Hello everyone! Please review this port of vector AES single block encryption/decryption intrinsics. On my QEMU with `Zvkned` extension enabled the `test/hotspot/jtreg/compiler/codegen/aes/TestAESMain.java` test is OK. I know that currently hardware implementing this extension is not available on the market but I suppose this PR can be a good starting point on supporting AES intrinsics for RISC-V in OpenJDK.
>
> ArsenyBochkarev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Left a note on a side effect of generate_vle32_pack2

Changes requested by fyang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/19960#pullrequestreview-2163577505