Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --allow-natives-syntax |
| 6 | // |
| 7 | var f = (function() { |
| 8 | "use asm"; |
| 9 | function f(x, y) { |
| 10 | return x - y; |
| 11 | } |
| 12 | return f; |
| 13 | })(); |
| 14 | |
| 15 | var counter = 0; |
| 16 | |
| 17 | var deopt = { toString : function() { |
| 18 | %DeoptimizeFunction(f); |
| 19 | counter++; |
| 20 | return "2"; |
| 21 | } }; |
| 22 | |
| 23 | var o = { toString : function() { |
| 24 | counter++; |
| 25 | return "1"; |
| 26 | } }; |
| 27 | |
| 28 | counter = 0; |
| 29 | assertEquals(1, f(deopt, o)); |
| 30 | assertEquals(2, counter); |
| 31 | |
| 32 | %OptimizeFunctionOnNextCall(f); |
| 33 | counter = 0; |
| 34 | assertEquals(-1, f(o, deopt)); |
| 35 | assertEquals(2, counter); |
| 36 | |
| 37 | %OptimizeFunctionOnNextCall(f); |
| 38 | counter = 0; |
| 39 | assertEquals(0, f(deopt, deopt)); |
| 40 | assertEquals(2, counter); |