compnerd wrote: Empirically it does: https://github.com/llvm/llvm-project/blob/7d638b4dbcb10c224741cdd4634a768c7bc6d305/llvm/utils/lit/lit/InprocBuiltins.py#L195-L250 This has worked for a very long time. https://github.com/llvm/llvm-project/pull/209409