Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
57 lines
1.1 KiB
Dart
57 lines
1.1 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 --no-use-osr --no-background-compilation
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import "package:expect/expect.dart";
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// Check correct deoptimization of instance field increment.
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main() {
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var a = new A();
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var aa = new A();
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for (int i = 0; i < 20; i++) {
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a.Incr();
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myIncr(aa);
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conditionalIncr(false, a);
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}
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Expect.equals(20, a.f);
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Expect.equals(20, aa.f);
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a.f = 1.0;
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// Deoptimize ++ part of instance increment.
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a.Incr();
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Expect.equals(2.0, a.f);
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var b = new B();
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// Deoptimize getfield part of instance increment.
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myIncr(b);
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Expect.equals(1.0, b.f);
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// Deoptimize since no type feedback was collected.
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var old = a.f;
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conditionalIncr(true, a);
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Expect.equals(old + 1, a.f);
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}
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myIncr(var a) {
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a.f++;
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}
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conditionalIncr(var f, var a) {
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if (f) {
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a.f++;
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}
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}
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class A {
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A() : f = 0;
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Incr() {
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f++;
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}
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var f;
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}
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class B {
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B() : f = 0;
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var f;
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}
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