RFR: 8342692: C2: long counted loop/long range checks: don't create loop-nest for short running loops [v5]

[Roland Westrelin]

On Wed, 4 Dec 2024 15:53:48 GMT, Roland Westrelin <roland at openjdk.org> wrote:

>> I wonder if we should start converting all these computations to `noOverflowInt`, just to avoid possible overflows etc.
>
>> Could `stride_con` be `min_int`?
> 
> We don't create a counted loop if stride is min_int.

> I wonder if we should start converting all these computations to `noOverflowInt`, just to avoid possible overflows etc.

In this case we would need `NoOverflowUnsignedLong` I think.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21630#discussion_r1869842138