llvm-project

1ca64c5f - [llvm] Remove `br i1 undef` from some regression tests [NFC] (#115691)

[llvm] Remove `br i1 undef` from some regression tests [NFC] (#115691) This PR aims to remove undefined behavior from tests under the directory `llvm/transforms/CodegenPrepare, ConstantHoisting, Coroutines` etc.