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| 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 obj = %GetUndetectable(); |
| 8 |
| 9 function shouldNotBeTaken() { |
| 10 fail("Undetectable branch should not be taken", "branch was taken"); |
| 11 } |
| 12 |
| 13 function shouldBeTaken() { |
| 14 fail("Inverted Undetectable branch should be taken", "branch was not taken"); |
| 15 } |
| 16 |
| 17 function testCompares() { |
| 18 assertTrue(!obj); |
| 19 assertFalse(!!obj); |
| 20 assertFalse(obj == true); |
| 21 assertFalse(obj == false); |
| 22 assertFalse(obj === true); |
| 23 assertFalse(obj === false); |
| 24 assertEquals(2, obj ? 1 : 2); |
| 25 assertEquals(obj, true && obj); |
| 26 assertEquals(obj, false || obj); |
| 27 } |
| 28 |
| 29 function testIfs() { |
| 30 if (obj) { |
| 31 shouldNotBeTaken(); |
| 32 } |
| 33 |
| 34 if (obj) { |
| 35 shouldNotBeTaken(); |
| 36 } else { |
| 37 // do nothing |
| 38 } |
| 39 |
| 40 if (!obj) { |
| 41 // do nothing |
| 42 } else { |
| 43 shouldBeTaken(); |
| 44 } |
| 45 } |
| 46 |
| 47 function testWhiles() { |
| 48 while (obj) { |
| 49 shouldNotBeTaken(); |
| 50 } |
| 51 |
| 52 var i = 0; |
| 53 while (!obj) { |
| 54 i++; |
| 55 break; |
| 56 } |
| 57 |
| 58 assertEquals(1, i); |
| 59 } |
| 60 |
| 61 function testFors() { |
| 62 for (var i = 0; obj; i++) { |
| 63 shouldNotBeTaken(); |
| 64 } |
| 65 |
| 66 var j = 0; |
| 67 for (var i = 0; !obj; i++) { |
| 68 j++; |
| 69 break; |
| 70 } |
| 71 |
| 72 assertEquals(1, j); |
| 73 } |
| 74 |
| 75 for (var j = 0; j < 5; j++) { |
| 76 testCompares(); |
| 77 testIfs(); |
| 78 testWhiles(); |
| 79 testFors(); |
| 80 |
| 81 if (j == 3) { |
| 82 %OptimizeFunctionOnNextCall(testCompares); |
| 83 %OptimizeFunctionOnNextCall(testIfs); |
| 84 %OptimizeFunctionOnNextCall(testWhiles); |
| 85 %OptimizeFunctionOnNextCall(testFors); |
| 86 } |
| 87 } |
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