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 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5 | // Flags: --allow-natives-syntax --expose-debug-as debug |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | // Test non-JSObject receiver. |
| 10 | function f(o) { |
| 11 | var result = []; |
| 12 | for (var i in o) { |
| 13 | result.push(i); |
| 14 | } |
| 15 | return result; |
| 16 | } |
| 17 | |
| 18 | assertEquals(["0"], f("a")); |
| 19 | assertEquals(["0"], f("a")); |
| 20 | |
| 21 | %OptimizeFunctionOnNextCall(f); |
| 22 | assertEquals(["0","1","2"], f("bla")); |
| 23 | |
| 24 | // Test the lazy deopt points. |
| 25 | var keys = ["a", "b", "c", "d"]; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 26 | var property_descriptor_keys = []; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | var deopt_enum = false; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 28 | var deopt_property_descriptor = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 29 | |
| 30 | var handler = { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 31 | ownKeys() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 32 | if (deopt_enum) { |
| 33 | %DeoptimizeFunction(f2); |
| 34 | deopt_enum = false; |
| 35 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 36 | return keys; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 37 | }, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 38 | getOwnPropertyDescriptor(target, k) { |
| 39 | if (deopt_property_descriptor) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 40 | %DeoptimizeFunction(f2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 41 | deopt_property_descriptor = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 42 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 43 | property_descriptor_keys.push(k); |
| 44 | return { enumerable: true, configurable: true } |
| 45 | }, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 46 | }; |
| 47 | |
| 48 | |
| 49 | var proxy = new Proxy({}, handler); |
| 50 | var o = {__proto__: proxy}; |
| 51 | |
| 52 | function f2(o) { |
| 53 | var result = []; |
| 54 | for (var i in o) { |
| 55 | result.push(i); |
| 56 | } |
| 57 | return result; |
| 58 | } |
| 59 | |
| 60 | function check_f2() { |
| 61 | assertEquals(keys, f2(o)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 62 | assertEquals(keys, property_descriptor_keys); |
| 63 | property_descriptor_keys.length = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | check_f2(); |
| 67 | check_f2(); |
| 68 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 69 | // Test lazy deopt after ForInEnumerate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 70 | %OptimizeFunctionOnNextCall(f2); |
| 71 | deopt_enum = true; |
| 72 | check_f2(); |
| 73 | |
| 74 | // Test lazy deopt after FILTER_KEY |
| 75 | %OptimizeFunctionOnNextCall(f2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 76 | deopt_property_descriptor = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 77 | check_f2(); |
| 78 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 79 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | function f3(o) { |
| 81 | for (var i in o) { |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | f3({__proto__:{x:1}}); |
| 86 | f3({__proto__:{x:1}}); |
| 87 | |
| 88 | %OptimizeFunctionOnNextCall(f3); |
| 89 | f3(undefined); |
| 90 | f3(null); |
| 91 | |
| 92 | // Reliable repro for an issue previously flushed out by GC stress. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 93 | var p = {x: "x"} |
| 94 | |
| 95 | function f4(o, p) { |
| 96 | var result = []; |
| 97 | for (var i in o) { |
| 98 | var j = p.x + "str"; |
| 99 | result.push(i); |
| 100 | } |
| 101 | return result; |
| 102 | } |
| 103 | |
| 104 | function check_f4() { |
| 105 | assertEquals(keys, f4(o, p)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 106 | assertEquals(keys, property_descriptor_keys); |
| 107 | property_descriptor_keys.length = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | check_f4(); |
| 111 | check_f4(); |
| 112 | |
| 113 | %OptimizeFunctionOnNextCall(f4); |
| 114 | |
| 115 | p.y = "y"; // Change map, cause eager deopt. |
| 116 | check_f4(); |
| 117 | |
| 118 | // Repro for Turbofan equivalent. |
| 119 | var x; |
| 120 | var count = 0; |
| 121 | |
| 122 | var Debug = debug.Debug; |
| 123 | |
| 124 | function listener(event, exec_state, event_data, data) { |
| 125 | if (event == Debug.DebugEvent.Break) { |
| 126 | %DeoptimizeFunction(f5); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | var handler3 = { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 131 | ownKeys() { return ["a", "b"] }, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 132 | getOwnPropertyDescriptor(target, k) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 133 | if (k == "a") count++; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 134 | if (x) %ScheduleBreak() |
| 135 | return { enumerable: true, configurable: true } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | } |
| 137 | }; |
| 138 | |
| 139 | var proxy3 = new Proxy({}, handler3); |
| 140 | var o3 = {__proto__: proxy3}; |
| 141 | |
| 142 | function f5() { |
| 143 | for (var p in o3) { |
| 144 | print(p); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | x = false; |
| 149 | |
| 150 | f5(); f5(); f5(); |
| 151 | %OptimizeFunctionOnNextCall(f5); |
| 152 | x = true; |
| 153 | count = 0; |
| 154 | Debug.setListener(listener); |
| 155 | f5(); |
| 156 | Debug.setListener(null); |
| 157 | assertEquals(1, count); |