RFR: 8349452: Fix performance regression for Arrays.fill() with AVX512 [v2]

Mon Nov 24 20:26:20 UTC 2025

On Fri, 21 Nov 2025 22:03:37 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> Srinivas Vamsi Parasa has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   undo size check for fill64_masked
>
> The pre-submit test seem to be unrelated to the PR changes. A fresh merge with tip might resolve those.

@sviswa7: Please see the new changes: (1) fresh merge with master (2) removed all other uses of masked stores (fill32_masked, fill64_masked) in other places (3) added a fastpath for byte array fill size <=4.

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PR Comment: https://git.openjdk.org/jdk/pull/28442#issuecomment-3572579136