Compiling Common Lisp code isn't too slow. There are some quick compilers like Clozure CL. What slows some Common Lisp native code compilers down is more advan

Compiling Common Lisp code isn't too slow. There are some quick compilers like Clozure CL. What slows some Common Lisp native code compilers down is more advanced optimization: type inference, type propagation etc, lots of optimization rules, style checking, code inlining, etc.