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 | assertEquals(0, "".length); |
| 8 | assertEquals(1, "a".length); |
| 9 | assertEquals(2, ("a" + "b").length); |
| 10 | |
| 11 | function id(x) { return x; } |
| 12 | |
| 13 | function f1(x) { |
| 14 | return x.length; |
| 15 | } |
| 16 | assertEquals(0, f1("")); |
| 17 | assertEquals(1, f1("a")); |
| 18 | %OptimizeFunctionOnNextCall(f1); |
| 19 | assertEquals(2, f1("a" + "b")); |
| 20 | assertEquals(3, f1(id("a") + id("b" + id("c")))) |
| 21 | |
| 22 | function f2(x, y, z) { |
| 23 | x = x ? "" + y : "" + z; |
| 24 | return x.length; |
| 25 | } |
| 26 | assertEquals(0, f2(true, "", "a")); |
| 27 | assertEquals(1, f2(false, "", "a")); |
| 28 | %OptimizeFunctionOnNextCall(f2); |
| 29 | assertEquals(0, f2(true, "", "a")); |
| 30 | assertEquals(1, f2(false, "", "a")); |
| 31 | assertEquals(3, f2(true, id("a") + id("b" + id("c")), "")); |