*buf*

inline function foo(x, y) {
  return x + y;
}

function bar(x, y) {
   foo(1, 2);
   return x * y;
}

// naively becomes =>

function bar(x, y) {
  x = 1;
  y = 2;
  x + y;
  return x * y;
}

// but, in reality, you'd want

function bar(x, y) {
   tmpx = 1;
   tmpy = 2;
   tmpx + tmpy;
   return x * y;
}