Wait, are you GPT-3? Maybe 2?
What do you mean by "compiles cleanly to predictable ASM"? Do you mean individual lines always output the same assembly in any given context? That hasn't been true for a long time, so you can't mean that. Do you mean that if you follow the steps of the C compiler in a given OS state that you will get roughly the same (the same for all intents and purposes, but things like compile-time constants like, well, COMPILE_TIME might differ) output? Well, yeah, that's called running a program, you're just doing it in your brain.
Are you saying that every C compiler is deterministic in a (consequential) way that Rust compilers are not?
It's got to be something I haven't thought of. What am I missing?