message: Don't special case u/i128 for UnOp::not
diff: @@ -358,15 +358,8 @@ fn trans_stmt<'a, 'tcx: 'a>(
  fx.bcx.ins().bint(types::I8, res)
  }
  ty::Uint(_) | ty::Int(_) => {
  - if fx.bcx.func.dfg.value_type(val) == types::I128 {
  - let (a, b) = fx.bcx.ins().isplit(val);
  - let a = fx.bcx.ins().bnot(a);
  - let b = fx.bcx.ins().bnot(b);
  - fx.bcx.ins().iconcat(a, b)
  - } else {
  fx.bcx.ins().bnot(val)
  }
  - }
  _ => unimplemented!("un op Not for {:?}", layout.ty),
  }
  }
  