Index: tests/language/deopt_lazy_finalization_test.dart |
=================================================================== |
--- tests/language/deopt_lazy_finalization_test.dart (revision 0) |
+++ tests/language/deopt_lazy_finalization_test.dart (working copy) |
@@ -0,0 +1,42 @@ |
+// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+// Test deoptimziation caused by lazy finalization. |
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr |
+ |
+import "package:expect/expect.dart"; |
+ |
+main() { |
+ Expect.equals(20000, part1()); |
+ // Trigger lazy finalization of class B, which should invalidate |
+ // optimized code for A.loop. |
+ Expect.equals(-20000, part2()); |
+} |
+ |
+part1() { |
+ var a = new A(); |
+ a.loop(); |
+ return a.loop(); |
regis
2013/11/21 21:48:18
If there is a reason to call a.loop() twice, you s
srdjan
2013/11/21 22:25:00
Added comments. The reason is that only second tim
|
+} |
+ |
+part2() { |
+ var b = new B(); |
+ b.loop(); |
+ return b.loop(); |
regis
2013/11/21 21:48:18
ditto
srdjan
2013/11/21 22:25:00
Done.
|
+} |
+ |
+class A { |
+ foo() => 2; |
+ |
+ loop() { |
+ var sum = 0; |
+ for (int i = 0; i < 10000; i++) { |
+ sum += foo(); |
+ } |
+ return sum; |
+ } |
+} |
+ |
+class B extends A { |
+ foo() => -2; |
+} |