RFR: 8322770: Implement C2 VectorizedHashCode on AArch64 [v5]

[Andrew Haley]

On Thu, 22 Aug 2024 15:53:26 GMT, Andrew Haley <aph at openjdk.org> wrote:

> 
> It's really not important, though.

I take that back. It _might_ be important because it enables optimization for short strings.
The average string in Java applications is about 32 characters long, so if we moved the block length down to 16 we'd get some benefit for typical java `String`s from this patch. It's not just about making the code compact and elegant, it's about real-world performance too.

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PR Comment: https://git.openjdk.org/jdk/pull/18487#issuecomment-2306508397