RFR: 8333434: IGV: Print loop node for PHASE_BEFORE/AFTER_CLOOPS

[Tobias Hartmann]

On Mon, 3 Jun 2024 12:53:47 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> This simple patch adds loop nodes for `PHASE_BEFORE_CLOOPS` (the `LoopNode` to be converted) and `PHASE_AFTER_CLOOPS` (the newly created `CountedLoopNode`) in IGV:
> 
> Before patch:
> ![image](https://github.com/openjdk/jdk/assets/17833009/6771160e-4d2e-423a-9578-40562c053a6f)
> 
> With patch:
> ![image](https://github.com/openjdk/jdk/assets/17833009/b6870a67-8c5e-42be-87f0-1b8de7269298)
> 
> Thanks,
> Christian

Looks good and trivial.

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Marked as reviewed by thartmann (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19524#pullrequestreview-2093811146