RFR: 8343296: IGV: Show pre/main/post at CountedLoopNodes

[Christian Hagedorn]

On Wed, 30 Oct 2024 13:36:53 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> It's sometimes difficult to keep track of which counted loops are pre, main or post loops. This patch adds this property to `CountedLoops`, similarly to the other node info that we print, for example, like a method name for a `CallStaticJava`.
> 
> This is achieved by emitting a new property to `CountedLoopNodes` and then extending the node info filter in IGV. This will show the pre/main/post info like the other node info below the node name:
> 
> ![image](https://github.com/user-attachments/assets/69abe3f4-3e97-4dfe-983a-0153057b1a8d)
> 
> Thanks to @robcasloz for helping me with the IGV filter changes!
> 
> Thanks,
> Christian

Thanks Roberto for your review!

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PR Comment: https://git.openjdk.org/jdk/pull/21788#issuecomment-2447568304