|  | // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file | 
|  | // for details. All rights reserved. Use of this source code is governed by a | 
|  | // BSD-style license that can be found in the LICENSE file. | 
|  | // Test deoptimization on a smi check. | 
|  | // VMOptions=--optimization-counter-threshold=10  --no-background-compilation | 
|  |  | 
|  | // @dart = 2.9 | 
|  |  | 
|  | import 'package:expect/expect.dart'; | 
|  |  | 
|  | hc(a) { | 
|  | var r = a.hashCode; | 
|  | return r; | 
|  | } | 
|  |  | 
|  | main() { | 
|  | for (var i = 0; i < 20; i++) { | 
|  | Expect.equals((1).hashCode, hc(1)); | 
|  | } | 
|  | // Passing double causes deoptimization. | 
|  | Expect.equals((1.0).hashCode, hc(1.0)); | 
|  | } |