The Third Big Optimization Is Linking

Rust compilers are able to cheat in a way that's called surgical linking. Most rust programs don't do CFFI, so they know certain things about pre-compiled binary because they're responsible for building it. But if you're just a random compiler author, you may very well not be watching game dev talks about struct of arrays and then saying, oh, I want this in my. There's obviously that gap right there.