> writing an entire machine code compiler that will run faster than GCC and equal it in performance is a difficult task Except that AFAIK he didn't claim that

> writing an entire machine code compiler that will run faster than GCC and equal it in performance is a difficult task Except that AFAIK he didn't claim that the native generated code will be as optimised as what gcc or clang produce.. I expect that this native code generator is useful for the debug build where code compilation speed matters more than optimised code generated. Sure in some cases you need the performance even for debug build then you'll need to spend more time compiling..