RFR: 8349106: Change ChaCha20 intrinsic to use quarter-round parallel implementation on aarch64

[Andrew Haley]

On Mon, 3 Feb 2025 16:14:23 GMT, Jamil Nimeh <jnimeh at openjdk.org> wrote:

> In terms of explaining the algorithm changes, I could add some comment text to the header of the stub function that better explains the general idea behind what is being done. It would certainly help anyone maintaining it down the line (myself included).

Your call if you want to describe it yourself, or quote the paper, or both. But please do one! The paper is rather readable. 😊

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PR Comment: https://git.openjdk.org/jdk/pull/23397#issuecomment-2631929964