RFR: 8334999: RISC-V: implement AES single block encryption/decryption intrinsics [v10]

[Yanhong Zhu]

On Thu, 24 Oct 2024 21:55:18 GMT, Arseny Bochkarev <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.
>
> Arseny Bochkarev has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 17 commits:
> 
>  - Replace RISCV64 -> riscv64 in comment
>  - Minor renaming of labels and reg_number
>  - Use RISCV64 instead of RISCV
>  - Fixed comment line
>  - Rename reg_number -> rounds in aes_loadkeys
>  - Fix typo
>  - Use same keys for encryption and decryption
>  - Multiversion decrypt intrinsic
>  - Use one L_end for all AES key sizes
>  - Multiversion encryption depending on keylen
>  - ... and 7 more: https://git.openjdk.org/jdk/compare/d1540e2a...e90b0d05

Marked as reviewed by yzhu (Author).

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PR Review: https://git.openjdk.org/jdk/pull/19960#pullrequestreview-2394105814