I do agree that if you remove `unsafe` blocks from Rust, then you have a performant language without UB. However: (1) We are talking about C here, not Rust (2)

I do agree that if you remove `unsafe` blocks from Rust, then you have a performant language without UB. However: (1) We are talking about C here, not Rust (2) Rust has UB due to `unsafe` (3) LLVM IR has UB.