To make fair comparison, you could translate C code very literally to Rust code, not using any "advanced" features or different libs (meaning no_std). Then you

To make fair comparison, you could translate C code very literally to Rust code, not using any "advanced" features or different libs (meaning no_std). Then you could see apples to apples how it'd compare to clang. Probably slower still, but at least you'd know that the slowness wouldn't be due complex generics or macros or something.