Extant cl compilers are quite primitive. Well known and uncomplicated analyses exist that can cope with this; e.g. in llvm https://godbolt.org/z/nadbG5zGs http

Extant cl compilers are quite primitive. Well known and uncomplicated analyses exist that can cope with this; e.g. in llvm https://godbolt.org/z/nadbG5zGs https://godbolt.org/z/nadbG5zGs