RFR: JDK-8300808: Accelerate Base64 on x86 for AVX2 [v15]

[Sandhya Viswanathan]

On Tue, 14 Feb 2023 15:19:34 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> Why?  There is no performance difference and the intent is clear.  Is this just a "style" thing?
>
> I think with `lessEqual` we'll jump to `L_tailProc` for the final 32-byte chunk in inputs that are divisible by 32 (starting from 64), no? Using `less` avoids that, while not affecting performance of any other inputs.

As Claes mentioned, this would allow us to do one more iteration of vector loop.

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PR: https://git.openjdk.org/jdk/pull/12126