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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 inlining of instance getters. | 4 // Test inlining of instance getters. |
5 // Three classes access always the same field. Optimize method foo and inline | 5 // Three classes access always the same field. Optimize method foo and inline |
6 // getter for classes 'A' and 'B'. Call later via 'C' and cause deoptimization. | 6 // getter for classes 'A' and 'B'. Call later via 'C' and cause deoptimization. |
7 // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-co
mpilation | 7 // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-co
mpilation |
8 | 8 |
9 import "package:expect/expect.dart"; | 9 import "package:expect/expect.dart"; |
10 | 10 |
11 class A { | 11 class A { |
12 int f; | 12 int f; |
13 A(this.f) {} | 13 A(this.f) {} |
14 int foo() { | 14 int foo() { |
15 return f; // <-- inline getter for classes 'A' and 'B'. | 15 return f; // <-- inline getter for classes 'A' and 'B'. |
16 } | 16 } |
17 } | 17 } |
18 | 18 |
19 class B extends A { | 19 class B extends A { |
20 B() : super(2) {} | 20 B() : super(2) {} |
21 } | 21 } |
22 | 22 |
23 class C extends A { | 23 class C extends A { |
24 C() : super(10) {} | 24 C() : super(10) {} |
25 } | 25 } |
26 | 26 |
27 class InlineGetterTest { | 27 class InlineGetterTest { |
28 static testMain() { | 28 static testMain() { |
29 var a = new A(1); | 29 var a = new A(1); |
30 var b = new B(); | 30 var b = new B(); |
31 int sum = 0; | 31 int sum = 0; |
32 for (int i = 0; i < 20; i++) { | 32 for (int i = 0; i < 20; i++) { |
33 sum += a.foo(); | 33 sum += a.foo(); |
34 sum += b.foo(); | 34 sum += b.foo(); |
35 } | 35 } |
36 var c = new C(); | 36 var c = new C(); |
37 sum += c.foo(); // <-- Deoptimizing. | 37 sum += c.foo(); // <-- Deoptimizing. |
38 Expect.equals(70, sum); | 38 Expect.equals(70, sum); |
39 } | 39 } |
40 } | 40 } |
41 | 41 |
42 main() { | 42 main() { |
43 InlineGetterTest.testMain(); | 43 InlineGetterTest.testMain(); |
44 } | 44 } |
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