I thought this was a fun experiment!
While it’s already quite absurd, I feel like the logical extreme here is using the Julia compiler to provide Julia source code → LLVM IR examples and then replacing the entire compiler with whatever gets generated 
I feel like the logical extreme here is using the Julia compiler to provide Julia source code → LLVM IR examples and then replacing the entire compiler with whatever gets generated
Carl Guo and I actually tried this a few years ago for C code with a decent amount of success (https://c.wsmoses.com/papers/hpectransformers.pdf)