[Mlir-commits] [mlir] Revert "[MLIR] [Mem2Reg] Fix unused block argument removal logic (#188484)" (PR #188571)

[Yi Zhang]

cathyzhyi wrote:

I have a patch and a testcase here in case it might be useful https://github.com/cathyzhyi/llvm-project/commit/62eafb5cd1f2d3df9a3d37bfe03bb21f85615f3c.

https://github.com/llvm/llvm-project/pull/188571