Robert Nystrom
2034061433
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com>
57 lines
1.2 KiB
Dart
57 lines
1.2 KiB
Dart
// Copyright (c) 2016, 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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// Test deoptimization on an optimistically hoisted smi check.
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// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
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// Test that lazy deoptimization works if the program returns to a function
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// that is scheduled for lazy deoptimization via an exception.
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import 'package:expect/expect.dart';
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class C {
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dynamic x = 42;
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}
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@pragma('vm:never-inline')
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AA(C c, bool b) {
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if (b) {
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c.x = 2.5;
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throw 123;
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}
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}
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@pragma('vm:never-inline')
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T1(C c, bool b) {
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try {
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AA(c, b);
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} on dynamic {}
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return c.x + 1;
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}
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@pragma('vm:never-inline')
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T2(C c, bool b) {
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try {
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AA(c, b);
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} on String {
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Expect.isTrue(false);
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} on int catch (e) {
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Expect.equals(e, 123);
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Expect.equals(b, true);
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Expect.equals(c.x, 2.5);
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}
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return c.x + 1;
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}
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main() {
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var c = new C();
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for (var i = 0; i < 10000; ++i) {
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T1(c, false);
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T2(c, false);
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}
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Expect.equals(43, T1(c, false));
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Expect.equals(43, T2(c, false));
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Expect.equals(3.5, T1(c, true));
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Expect.equals(3.5, T2(c, true));
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}
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