RFR: 8361608: C2: assert(opaq->outcnt() == 1 && opaq->in(1) == limit) failed [v4]

[Marc Chevalier]

On Fri, 17 Oct 2025 14:54:35 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Marc Chevalier has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   driver -> main
>
> Could `PhaseIdealLoop::eliminate_useless_zero_trip_guard()` maybe also be an option? We are looping through all loops and check the `OpaqueZeroTripGuardNodes` anyways there.

Since you made most of the test (at least), which is the biggest part of this PR.

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PR Comment: https://git.openjdk.org/jdk/pull/27586#issuecomment-3454981348