| // Copyright (c) 2011, 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. |
| // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| // Check correct deoptimization of instance field increment. |
| |
| main() { |
| var a = new A(); |
| var aa = new A(); |
| for (int i = 0; i < 20; i++) { |
| a.Incr(); |
| myIncr(aa); |
| conditionalIncr(false, a); |
| } |
| Expect.equals(20, a.f); |
| Expect.equals(20, aa.f); |
| a.f = 1.0; |
| // Deoptimize ++ part of instance increment. |
| a.Incr(); |
| Expect.equals(2.0, a.f); |
| var b = new B(); |
| // Deoptimize getfield part of instance increment. |
| myIncr(b); |
| Expect.equals(1.0, b.f); |
| // Deoptimize since no type feedback was collected. |
| var old = a.f; |
| conditionalIncr(true, a); |
| Expect.equals(old + 1, a.f); |
| } |
| |
| myIncr(var a) { |
| a.f++; |
| } |
| |
| conditionalIncr(var f, var a) { |
| if (f) { |
| a.f++; |
| } |
| } |
| |
| class A { |
| A() : f = 0; |
| Incr() { |
| f++; |
| } |
| |
| var f; |
| } |
| |
| class B { |
| B() : f = 0; |
| var f; |
| } |