In fact, this pass need `llc` to test. `TargetMachine` seems redundant,
because before adding this pass `CodeGenPassBuilder` already checks it:
ed4194bb8d/llvm/include/llvm/CodeGen/CodeGenPassBuilder.h (L590-L592)
In fact, this pass need `llc` to test. `TargetMachine` seems redundant,
because before adding this pass `CodeGenPassBuilder` already checks it:
ed4194bb8d/llvm/include/llvm/CodeGen/CodeGenPassBuilder.h (L590-L592)