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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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 // VMOptions=--optimization-counter-threshold=100 --no-background-compilation | 4 // VMOptions=--optimization-counter-threshold=100 --no-background-compilation |
5 | 5 |
6 // Test lazy deoptimization at field guards with deferred loading. | 6 // Test lazy deoptimization at field guards with deferred loading. |
7 | 7 |
8 import "package:expect/expect.dart"; | 8 import "package:expect/expect.dart"; |
9 import "cha_deopt1_lib.dart"; | 9 import "cha_deopt1_lib.dart"; |
10 import "cha_deopt1_deferred_lib.dart" deferred as d; | 10 import "cha_deopt1_deferred_lib.dart" deferred as d; |
11 | 11 |
12 var loaded = false; | 12 var loaded = false; |
13 | 13 |
14 main() { | 14 main() { |
15 for (var i = 0; i < 2000; i++) bla(); | 15 for (var i = 0; i < 2000; i++) bla(); |
16 Expect.equals(42, bla()); | 16 Expect.equals(42, bla()); |
17 d.loadLibrary().then((_) { | 17 d.loadLibrary().then((_) { |
18 loaded = true; | 18 loaded = true; |
19 Expect.equals("good horse", bla()); | 19 Expect.equals("good horse", bla()); |
20 }); | 20 }); |
21 } | 21 } |
22 | 22 |
23 make_t() { | 23 make_t() { |
24 try { | 24 try { |
25 if (loaded) { | 25 if (loaded) { |
26 return d.make_u(); | 26 return d.make_u(); |
27 } else { | 27 } else { |
28 return new T(); | 28 return new T(); |
29 } | 29 } |
30 } catch (e) { } | 30 } catch (e) {} |
31 } | 31 } |
32 | 32 |
33 bla() { | 33 bla() { |
34 var x = new X(); | 34 var x = new X(); |
35 x.test(make_t()); | 35 x.test(make_t()); |
36 return x.fld.m(); | 36 return x.fld.m(); |
37 } | 37 } |
38 | 38 |
39 | |
40 class X { | 39 class X { |
41 T fld = new T(); | 40 T fld = new T(); |
42 | 41 |
43 test(T t) { | 42 test(T t) { |
44 if (t != null) { | 43 if (t != null) { |
45 T tmp = t; | 44 T tmp = t; |
46 fld = tmp; | 45 fld = tmp; |
47 } | 46 } |
48 } | 47 } |
49 } | 48 } |
50 | |
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