> Also Swift's compiled code does not get near the same performance as Go's compiled code. Even when you unsafely compile Swift's code, it doesn't get near.

Do you have a source for this?

Swift had the long term in mind anyway. The effort to create SIL, along with the industrial-strength LLVM pipeline, has led to a rock-solid foundation. It's hard to compete with a backend that has 4 separate IRs, each with its own suite of optimization passes, including hundreds of algebraic simplifications, a highly tuned register allocator, an instruction scheduling pipeline, and an autovectorizer, just to scratch the surface. The stage is set for an excellent compiler architecture, even if they're not there today.