src/third_party/mozjs-45/js/src/jit-test/tests/jaeger/regalloc-double.js

// register allocation involving doubles.

function foo(a,b) {
  var c;
  if (a < b) {
    c = a + 1;
  } else {
    c = 0.5;
  }
  return c;
}
assertEq(foo(0, 1), 1);