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 | function f1(a, i) { |
| 8 | return a[i] + 0.5; |
| 9 | } |
| 10 | var arr = [,0.0,2.5]; |
| 11 | assertEquals(0.5, f1(arr, 1)); |
| 12 | assertEquals(0.5, f1(arr, 1)); |
| 13 | %OptimizeFunctionOnNextCall(f1); |
| 14 | assertEquals(0.5, f1(arr, 1)); |
| 15 | |
| 16 | // Trick crankshaft into accepting feedback with the array prototype |
| 17 | // map even though a call on that map was never made. optopush should |
| 18 | // refuse to inline the push call based on the danger that it's modifying |
| 19 | // the array prototype. |
| 20 | var push = Array.prototype.push; |
| 21 | var array_prototype = Array.prototype; |
| 22 | |
| 23 | function optopush(a) { |
| 24 | push.call(a, 1); |
| 25 | } |
| 26 | |
| 27 | function foo() { |
| 28 | optopush(array_prototype); |
| 29 | } |
| 30 | |
| 31 | optopush([]); |
| 32 | optopush([]); |
| 33 | optopush([]); |
| 34 | %OptimizeFunctionOnNextCall(foo); |
| 35 | foo(); |
| 36 | assertEquals(1.5, f1(arr, 0)); |