| // 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 inlining of simple function with control flow in a test context. |
| // Optimize function foo with instance of A and inlined function bar. Call later |
| // with instance of B and cause deoptimization. |
| // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| class A { |
| var x = 1; |
| } |
| |
| class B { |
| var x = 0; |
| } |
| |
| bool bar(o) { |
| if (o.x > 0) { |
| // <-- Deoptimize from inner frame. |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| int foo(o) { |
| if (bar(o)) { |
| // <-- Used in a test context. |
| return 1; |
| } else { |
| return 0; |
| } |
| } |
| |
| main() { |
| dynamic o = new A(); |
| int sum = 0; |
| for (int i = 0; i < 20; i++) sum += foo(o); |
| o = new B(); |
| sum += foo(o); // <-- Cause deoptimization of bar within foo. |
| Expect.equals(20, sum); |
| } |