message: Test signed 128bit discriminants
diff: @@ -103,6 +103,14 @@ fn main() {
  Box::pin(move |mut _task_context| {
  yield ();
  }).as_mut().resume(0);
  +
  + #[derive(Copy, Clone)]
  + enum Nums {
  + NegOne = -1,
  + }
  +
  + let kind = Nums::NegOne;
  + assert_eq!(-1i128, kind as i128);
  }
  #[target_feature(enable = "sse2")]
  