RFR: 8331168: Introduce PredicateEntryIterator to iterate through predicate entries

[Vladimir Kozlov]

On Fri, 14 Jun 2024 07:53:01 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> This is another small PR split off from the complete fix for Assertion Predicates.
> 
> Changes include:
> - Replace predicate matching/skipping code in `build_loop_late_post_work()` to use dedicated walker (i.e. new `PredicateEntryIterator` class) which uses predicate classes.
> - New predicate helper classes to improve readability.
> - Simple typos and code style updates.
> 
> Thanks,
> Christian

Looks reasonable.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19716#pullrequestreview-2118911693