Jacob Richman
2dcd56ef43
There are far too many files here to review everyone carefully. Spot checking most of the diffs look good as test code is generally written with less care than application code so lots of ugly formatting get through. If people notice files where the automated formatting bothers them feel free to comment indicating file names and I'll move spaces within comments to make the formatting cleaner and use comments to force block formatting as I have done for other case where formatting looked bad. BUG= R=efortuna@google.com Review-Url: https://codereview.chromium.org/2771453003 .
61 lines
1.5 KiB
Dart
61 lines
1.5 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// VMOptions=--optimization-counter-threshold=10
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import "package:expect/expect.dart";
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// This is a test for deoptimization infrastructure and to reproduce the
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// failure from bug 5442338.
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main() {
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warmup();
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runTest();
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}
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// Create a situation where method 'call' is optimized for using class A
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// when calling foo.
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warmup() {
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List a = [new A(), new A(), new A(), new A()];
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var res = 0;
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for (int i = 0; i < 20; i++) {
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res = call(a, 0);
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}
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Expect.equals(10, res);
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}
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// Create a situation where several optimized frames of 'call' are on stack
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// when deoptimization occurs because B.foo is called. After the first
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// deoptimization, several optimized frames of 'call' are still on stack and
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// some of them will be deoptimized.
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runTest() {
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List a = [new A(), new A(), new B(), new A(), new B(), new B()];
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var res = call(a, 0);
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Expect.equals(35, res);
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}
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// This method will be optimized for using class A when calling 'foo' and
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// later will be deoptimized because B.foo is required.
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call(List a, int n) {
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if (n < a.length) {
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var sum = call(a, n + 1);
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for (int i = n; i < a.length; i++) {
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sum += a[i].foo();
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}
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return sum;
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}
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return 0;
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}
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class A {
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foo() {
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return 1;
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}
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}
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class B {
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foo() {
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return 2;
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}
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}
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