RFR: 8320448: Accelerate IndexOf using AVX2 [v49]

[Emanuel Peter]

On Thu, 30 May 2024 16:16:59 GMT, Scott Gibbons <sgibbons at openjdk.org> wrote:

>> I agree with @eme64 to postpone the integration after JDK 23 is forked in one week. It is not about how you confident with code. It is size of code. I did only limited (tier1-4) testing in our infra which did not cover all our testing configuration.
>
> @vnkozlov OK.  I'll defer to you all.  I've contacted the author of the fuzzer to see what I can do to set up a local instance.  Would this be sufficient to increase confidence for future submissions?  We can run it perpetually on fixes (provided I can set it up).  Had I done that, we could have had 6 months of fuzzing on top of our tests.  Would that have alleviated this concern?

@asgibbons I generally just stop pushing ANY RFE's a week or two before the fork. Even if you did run the fuzzer with it - there are often last-minute changes. And your code here is rather large, so even if you are confident, there must be at least one bug hiding.

Running the fuzzer is nice as pre-integration, but it mostly only catches things post-integration.

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PR Comment: https://git.openjdk.org/jdk/pull/16753#issuecomment-2140136262