On: C Internals

[hoseja]

Perhaps more telling/less nit-pickable is when you modify the function to be

    float hn_demo(float a, float b, float c) {
      a = a + b;
      a = a + b * c;
      return a;
    }

and let the compiler actually optimize with -02.

[pjmlp → hoseja]

Sure, but it still boils down to the fact that it isn't as 1:1 as many think it is.