RFR: 8262721: Add Tests to verify single iteration loops are properly optimized

[Christian Hagedorn]

On Mon, 7 Feb 2022 13:49:27 GMT, Roland Westrelin <roland at openjdk.org> wrote:

> That came up in previous:
> 
> https://github.com/openjdk/jdk/pull/2529#discussion_r583054321

Looks good!

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Marked as reviewed by chagedorn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7368