test/expect/TestJit.test_output_pruning.expect

graph(%0 : Double(5, 5)
      %1 : Double(5, 5)
      -------- stage 1 --------
      %4 : Double(5, 5)) {
  %2 : Double(5, 5) = mul(%0, %1)
  %3 : Double(5, 5) = add[alpha={1}](%1, %1)
  ---------------- stage 1 ----------------
  %5 : Double(5, 5) = mul(%4, %1)
  return (%2, %3, %5);
}