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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // Test correct handling of phis with only environment uses that were inserted | 4 // Test correct handling of phis with only environment uses that were inserted |
5 // by store to load forwarding. | 5 // by store to load forwarding. |
6 // VMOptions=--optimization_counter_threshold=10 | 6 // VMOptions=--optimization_counter_threshold=10 |
7 | 7 |
8 import "package:expect/expect.dart"; | 8 import "package:expect/expect.dart"; |
9 | 9 |
10 class A { | 10 class A { |
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26 test(b); | 26 test(b); |
27 for (var i = 0; i < 20; ++i) test(a); | 27 for (var i = 0; i < 20; ++i) test(a); |
28 Expect.equals("null", test(a)); | 28 Expect.equals("null", test(a)); |
29 Expect.equals("null", test(b)); | 29 Expect.equals("null", test(b)); |
30 | 30 |
31 // Store a non-null object into foo to trigger deoptimization of test. | 31 // Store a non-null object into foo to trigger deoptimization of test. |
32 a.foo = 123; | 32 a.foo = 123; |
33 Expect.equals("other", test(a)); | 33 Expect.equals("other", test(a)); |
34 Expect.equals("null", test(b)); | 34 Expect.equals("null", test(b)); |
35 } | 35 } |
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