| // Copyright 2017 the V8 project authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| // MODULE | |
| // Flags: --allow-natives-syntax | |
| export let x = 0; | |
| function foo() { return x++ }; | |
| function gaga(f) { return f() }; | |
| %PrepareFunctionForOptimization(gaga); | |
| assertEquals(0, gaga(foo)); | |
| assertEquals(1, gaga(foo)); | |
| %OptimizeFunctionOnNextCall(gaga); | |
| assertEquals(2, gaga(foo)); |