[llvm] [IR][JumpThreading] Fix infinite recursion on compare self-reference [updated] (PR #129501)

[Robert Imschweiler via llvm-commits]

ro-i wrote:

Hm, I'm not 100% sure about the issue. I'm currently using a set to track all visited values when visiting an instruction. As soon as another instruction is visited, there will be a new set. Am I missing something?

https://github.com/llvm/llvm-project/pull/129501