| // Copyright (c) 2014, 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. |
| // VMOptions=--optimization-counter-threshold=10 --no-background-compilation |
| |
| // Test that the compiler's load elimination phase sees interfering writes to |
| // the array's buffer. |
| |
| // This test is not compatible with dart2js: Int64List is not supported. |
| |
| import "dart:typed_data"; |
| import 'package:expect/expect.dart'; |
| |
| void testStoreLoad(l, z) { |
| l[0] = 9223372036854775807; |
| l[1] = 9223372036854775806; |
| l[2] = l[0]; |
| l[3] = z; |
| Expect.equals(l[0], 9223372036854775807); |
| Expect.equals(l[1], 9223372036854775806); |
| Expect.isTrue(l[1] < l[0]); |
| Expect.equals(l[2], l[0]); |
| Expect.equals(l[3], z); |
| } |
| |
| main() { |
| var l = new Int64List(4); |
| var zGood = 9223372036854775807; |
| var zBad = false; |
| for (var i = 0; i < 40; i++) { |
| testStoreLoad(l, zGood); |
| } |
| // Deopt. |
| try { |
| testStoreLoad(l, zBad); |
| } catch (_) {} |
| for (var i = 0; i < 40; i++) { |
| testStoreLoad(l, zGood); |
| } |
| } |