Is this what you mean by more clusters? Looks like clang compiles the two functions to roughly the same "tree search" code. https://godbolt.org/z/7M_3PU https:/

Is this what you mean by more clusters? Looks like clang compiles the two functions to roughly the same "tree search" code. https://godbolt.org/z/7M_3PU https://godbolt.org/z/7M_3PU