| // Copyright 2014 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. |
| |
| // Flags: --allow-natives-syntax |
| |
| function p(x) { |
| this.x = x; |
| } |
| |
| function f() { |
| var a = new p(1), b = new p(2); |
| for (var i = 0; i < 1; i++) { |
| a.x += b.x; |
| } |
| return a.x; |
| }; |
| %PrepareFunctionForOptimization(f); |
| new p(0.1); // make 'x' mutable box double field in p. |
| |
| assertEquals(3, f()); |
| assertEquals(3, f()); |
| %OptimizeFunctionOnNextCall(f); |
| assertEquals(3, f()); |
