RFR: 8296412: Special case infinite loops with unmerged backedges in IdealLoopTree::check_safepts [v2]

[Emanuel Peter]

On Mon, 19 Dec 2022 06:19:52 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Christian's review suggestion
>
> Looks good to me.

Thanks @TobiHartmann @chhagedorn @vnkozlov for the discussions and reviews!

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PR: https://git.openjdk.org/jdk/pull/11706