tests/compiler/dart2js/cps_ir/expected/argument_refinement_num_9.js

// Expectation for test: 
// main() {
//   var x = int.parse('1233');
//   var y = int.parse('1234');
//   print(x is num);
//   print(y is num);
//   print(x ^ y);
//   print(x is num);
//   print(y is num); // will be compiled to `true` if we know the type of `y`.
// }

function() {
  var x = P.int_parse("1233", null, null), y = P.int_parse("1234", null, null);
  P.print(typeof x === "number");
  P.print(typeof y === "number");
  P.print(J.$xor$n(x, y));
  P.print(true);
  P.print(true);
}