RFR: 8353290: C2: Refactor PhaseIdealLoop::is_counted_loop() [v3]

[Christian Hagedorn]

On Wed, 22 Oct 2025 18:59:48 GMT, Kangcheng Xu <kxu at openjdk.org> wrote:

>> Thanks @tabjy for coming back with an update and pinging me again! Sorry, I completely missed it the first time. I will be on vacation starting tomorrow for two weeks but I'm happy to take another look when I'm back :-)
>
> @chhagedorn Sorry this took longer than expected. I left a few replies under some of your specific comments. All other issues were addressed. Thank you!

No worries, thanks @tabjy for addressing my suggestions and comments! I won't be able to continue this week but will have another look next week.

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PR Comment: https://git.openjdk.org/jdk/pull/24458#issuecomment-3435635503