[llvm] [IndVarSimplify] Eliminated Pure LoopCounter (PR #146845)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

But in any case, this needs to be split into two changes. The changes to the isLoopCounter() definition should be a separate PR from the IV elimination.

https://github.com/llvm/llvm-project/pull/146845