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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 that we get rid of duplicate type guards on a field when that | 4 // Test that we get rid of duplicate type guards on a field when that |
5 // field is being gvn'ed. | 5 // field is being gvn'ed. |
6 | 6 |
7 #import("compiler_helper.dart"); | 7 #import("compiler_helper.dart"); |
8 | 8 |
9 final String TEST = @""" | 9 const String TEST = @""" |
10 class A { | 10 class A { |
11 var field = 52; | 11 var field = 52; |
12 foo() { | 12 foo() { |
13 var a = this.field; | 13 var a = this.field; |
14 while (a + 42 == 42); | 14 while (a + 42 == 42); |
15 // This field get should be GVN'ed | 15 // This field get should be GVN'ed |
16 a = this.field; | 16 a = this.field; |
17 while (a + 87 == 87); | 17 while (a + 87 == 87); |
18 field = 'bar'; | 18 field = 'bar'; |
19 } | 19 } |
20 } | 20 } |
21 | 21 |
22 main() { | 22 main() { |
23 while (true) new A().foo(); | 23 while (true) new A().foo(); |
24 } | 24 } |
25 """; | 25 """; |
26 | 26 |
27 main() { | 27 main() { |
28 String generated = compileAll(TEST); | 28 String generated = compileAll(TEST); |
29 RegExp regexp = const RegExp('foo\\\$0\\\$bailout'); | 29 RegExp regexp = const RegExp('foo\\\$0\\\$bailout'); |
30 Iterator matches = regexp.allMatches(generated).iterator(); | 30 Iterator matches = regexp.allMatches(generated).iterator(); |
31 | 31 |
32 // We check that there is only one call to the bailout method. | 32 // We check that there is only one call to the bailout method. |
33 // One match for the call, one for the definition. | 33 // One match for the call, one for the definition. |
34 checkNumberOfMatches(matches, 2); | 34 checkNumberOfMatches(matches, 2); |
35 } | 35 } |
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