Do note that with MIR the focus is polymorphic optimizations - reducing the LLVM IR for all monomorphizations of a generic function, at once. Unlike C++ templa

Do note that with MIR the focus is polymorphic optimizations - reducing the LLVM IR for all monomorphizations of a generic function, at once. Unlike C++ templates, Rust enforces a single definition with uniform semantics, for a generic type/function (specialization going through the existing trait static dispatch mechanism), so we can take advantage of that to reduce compile times.