[Mlir-commits] [mlir] [mlir] Avoid rewriting unreachable blocks in the greedy driver (PR #225814)

[Mehdi Amini]

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joker-eph wrote:

I tried to simplify the code as much as possible and document.  Extracted some logic in a new `ReachabilityState` Class. 

Hopefully, we got to a state where it's easier to follow and understand now. 

https://github.com/llvm/llvm-project/pull/225814