RFR: 8322770: Implement C2 VectorizedHashCode on AArch64

[snadampal]

On Wed, 15 May 2024 15:27:23 GMT, Mikhail Ablakatov <duke at openjdk.org> wrote:

>> Hi,
>> 
>>>  I can update the patch with current results on Monday and we could decide how to proceed with this PR after that. Sounds good?
>> 
>> Yes, that's right.
>
> Hi @theRealAph ! You may find the latest version here: https://github.com/mikabl-arm/jdk/commit/b3db421c795f683db1a001853990026bafc2ed4b . I gave a short explanation in the commit message, feel free to ask for more details if required. 
> 
> Unfortunately, it still contains critical bugs and I won't be able to take a look into the issue before the next week at best. Until it's fixed, it's not possible to run the benchmarks. Although I expect it to improve performance on longer integer arrays based on a benchmark I've written in C++ and Assembly. The results aren't comparable to the jmh results, so I won't post them here.

Hi @mikabl-arm , the improvements for larger sizes look impressive, good work! 
any timeline for getting it merged?

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PR Comment: https://git.openjdk.org/jdk/pull/18487#issuecomment-2168348133