[Mlir-commits] [mlir] Revert "[mlir] Fix block merging" (PR #100510)

[Tobias Gysi]

https://github.com/gysit approved this pull request.

LGTM

I can reproduce as well using the following command line:

```
./bin/mlir-opt test.mlir -pass-pipeline="any(any(canonicalize{region-simplify=aggressive}))" 
test.mlir:10:5: error: type mismatch for bb argument #0 of successor #1
    llvm.cond_br %1, ^bb3(%4 : i1), ^bb4(%4 : i1)
```


https://github.com/llvm/llvm-project/pull/100510