RFR: 8342692: C2: long counted loop/long range checks: don't create loop-nest for short running loops [v9]

[Emanuel Peter]

On Mon, 31 Mar 2025 08:46:29 GMT, Roland Westrelin <roland at openjdk.org> wrote:

>> @rwestrel Is this ready for review?
>
> @eme64 yes, it's ready for review.

@rwestrel Sorry it took so long for me to look at this.

Did you do some benchmarking to prove that `ShortLoopIter = 1000` is reasonable?

The Benchmark you published earlier does not seem to do that, right?
https://github.com/openjdk/jdk/pull/21630#issuecomment-2587016221

I would also like to see that benchmark integrated. If you are using a benchmark to demonstrate the performance, it should be integrate so others can easily verify on their platform :)

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PR Comment: https://git.openjdk.org/jdk/pull/21630#issuecomment-2823574678