// we'll need idx-min anyway as the control value for the jump table.
		var min, max uint64
		if unsigned {
			min, _ = constant.Uint64Val(n.Cases[0])
			max, _ = constant.Uint64Val(n.Cases[len(n.Cases)-1])
		} else {
			mn, _ := constant.Int64Val(n.Cases[0])
			mx, _ := constant.Int64Val(n.Cases[len(n.Cases)-1])
			min = uint64(mn)
			max = uint64(mx)
		}