[llvm] [WebAssembly] Replace Reachability with SCCs in Irreducible CFG Fixer (PR #179722)

[Demetrius Kanios via llvm-commits]

QuantumSegfault wrote:

Good point! I didn't notice those before.

Then yeah, better keep it that way...must be a subtle edge case. Better not tempt fate.

https://github.com/llvm/llvm-project/pull/179722