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Side by Side Diff: tests/language/deopt_lazy_finalization_test.dart

Issue 81333003: Do not eagerly finalize classes in CHA, instead regard unfinalized classes as ’non-existent’ an… (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 7 years, 1 month ago
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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
3 // BSD-style license that can be found in the LICENSE file.
4 // Test deoptimziation caused by lazy finalization.
5 // VMOptions=--optimization-counter-threshold=10 --no-use-osr
6
7 import "package:expect/expect.dart";
8
9 main() {
10 Expect.equals(20000, part1());
11 // Trigger lazy finalization of class B, which should invalidate
12 // optimized code for A.loop.
13 Expect.equals(-20000, part2());
14 }
15
16 part1() {
17 var a = new A();
18 a.loop();
19 // Second invocation calls optimized code.
20 return a.loop();
21 }
22
23 part2() {
24 var b = new B();
25 b.loop();
26 // Second invocation calls optimized code.
27 return b.loop();
28 }
29
30 class A {
31 foo() => 2;
32
33 loop() {
34 var sum = 0;
35 for (int i = 0; i < 10000; i++) {
36 sum += foo();
37 }
38 return sum;
39 }
40 }
41
42 class Aa extends A {
43
44 }
45
46 class B extends Aa {
47 foo() => -2;
48 }
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