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

[Kangcheng Xu]

On Tue, 22 Apr 2025 07:42:42 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Kangcheng Xu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   WIP: review followups
>
> Was out last week but I'm seeing your last commit mentions WIP. Let me know when it's ready to have another look again :-)

Resolved conflict with [JDK-8357951](https://bugs.openjdk.org/browse/JDK-8357951). @chhagedorn I'd appreciate a re-review. Thank you so much!

-------------

PR Comment: https://git.openjdk.org/jdk/pull/24458#issuecomment-2977462355