RFR: 8328528: C2 should optimize long-typed parallel iv in an int counted loop [v3]

[Kangcheng Xu]

On Thu, 18 Apr 2024 09:38:20 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> And why no IR rules for these?
>
> You definately need more tests with IR rules.

Those functions were only called in `testCorrectness()` and excluded from IR verifications. They are not included.

>> Generally, it would be nice if you had more cases where we are checking overflows.
>
> And some with negative strides would be great too.

More tests added.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18489#discussion_r1598500232
PR Review Comment: https://git.openjdk.org/jdk/pull/18489#discussion_r1598500700