| // Copyright (c) 2012, 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 program for correct optimizations related to types fo allocated lists. |
| // VMOptions=--optimization-counter-threshold=10 |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| main() { |
| // Trigger optimization of 'test' method. |
| for (int i = 0; i < 20; i++) { |
| test(2); |
| } |
| } |
| |
| test(n) { |
| var a = new List(); // Growable list. |
| var b = new List(10); // Fixed size list. |
| var c = const [1, 2, 3, 4]; // Constant aray. |
| // In optimized mode the class checks will be eliminated since the |
| // constructors above provide information about exact types. |
| a.add(4); |
| b[0] = 5; |
| Expect.equals(4, a[0]); |
| Expect.equals(5, b[0]); |
| // Test bound check elimination. |
| Expect.equals(2, c[1]); |
| // Test elimination of array length computation. |
| var v = c[n]; |
| Expect.equals(v, c[n]); |
| } |