RFR: 8314125: RISC-V: implement Base64 intrinsic - encoding [v6]

[Hamlin Li]

On Mon, 29 Jul 2024 05:00:13 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Hi, will take a look. 

Thanks!

> BTW: Have you resolved the performance issue of base64 decode instrinsic?

It only bring regression in MIME cases, I did some investigation, but not found root cause yet.

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PR Comment: https://git.openjdk.org/jdk/pull/19973#issuecomment-2256144590