Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | // Flags: --allow-natives-syntax --inline-construct |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 29 | |
| 30 | // Test inlining of constructor calls. |
| 31 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | function TestInlinedConstructor(constructor, closure) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 33 | var result; |
| 34 | var counter = { value:0 }; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | var noDeopt = { deopt:0 }; |
| 36 | var forceDeopt = { /*empty*/ }; |
| 37 | |
| 38 | result = closure(constructor, 11, noDeopt, counter); |
| 39 | assertEquals(11, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 40 | assertEquals(1, counter.value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 41 | |
| 42 | result = closure(constructor, 23, noDeopt, counter); |
| 43 | assertEquals(23, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 44 | assertEquals(2, counter.value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 45 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 46 | %OptimizeFunctionOnNextCall(closure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | result = closure(constructor, 42, noDeopt, counter); |
| 48 | assertEquals(42, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 49 | assertEquals(3, counter.value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 50 | |
| 51 | result = closure(constructor, 127, forceDeopt, counter); |
| 52 | assertEquals(127, result) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 53 | assertEquals(4, counter.value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | |
| 55 | %DeoptimizeFunction(closure); |
| 56 | %ClearFunctionTypeFeedback(closure); |
| 57 | %ClearFunctionTypeFeedback(constructor); |
| 58 | } |
| 59 | |
| 60 | function value_context(constructor, val, deopt, counter) { |
| 61 | var obj = new constructor(val, deopt, counter); |
| 62 | return obj.x; |
| 63 | } |
| 64 | |
| 65 | function test_context(constructor, val, deopt, counter) { |
| 66 | if (!new constructor(val, deopt, counter)) { |
| 67 | assertUnreachable("should not happen"); |
| 68 | } |
| 69 | return val; |
| 70 | } |
| 71 | |
| 72 | function effect_context(constructor, val, deopt, counter) { |
| 73 | new constructor(val, deopt, counter); |
| 74 | return val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | function TestInAllContexts(constructor) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | TestInlinedConstructor(constructor, value_context); |
| 79 | TestInlinedConstructor(constructor, test_context); |
| 80 | TestInlinedConstructor(constructor, effect_context); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | |
| 84 | // Test constructor returning nothing in all contexts. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | function c1(val, deopt, counter) { |
| 86 | deopt.deopt; |
| 87 | this.x = val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 88 | counter.value++; |
| 89 | } |
| 90 | TestInAllContexts(c1); |
| 91 | |
| 92 | |
| 93 | // Test constructor returning an object in all contexts. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 94 | function c2(val, deopt, counter) { |
| 95 | var obj = {}; |
| 96 | deopt.deopt; |
| 97 | obj.x = val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 98 | counter.value++; |
| 99 | return obj; |
| 100 | } |
| 101 | TestInAllContexts(c2); |
| 102 | |
| 103 | |
| 104 | // Test constructor returning a primitive value in all contexts. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 105 | function c3(val, deopt, counter) { |
| 106 | deopt.deopt; |
| 107 | this.x = val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 108 | counter.value++; |
| 109 | return "not an object"; |
| 110 | } |
| 111 | TestInAllContexts(c3); |
| 112 | |
| 113 | |
| 114 | // Test constructor called with too many arguments. |
| 115 | function c_too_many(a, b) { |
| 116 | this.x = a + b; |
| 117 | } |
| 118 | function f_too_many(a, b, c) { |
| 119 | var obj = new c_too_many(a, b, c); |
| 120 | return obj.x; |
| 121 | } |
| 122 | assertEquals(23, f_too_many(11, 12, 1)); |
| 123 | assertEquals(42, f_too_many(23, 19, 1)); |
| 124 | %OptimizeFunctionOnNextCall(f_too_many); |
| 125 | assertEquals(43, f_too_many(1, 42, 1)); |
| 126 | assertEquals("foobar", f_too_many("foo", "bar", "baz")) |
| 127 | |
| 128 | |
| 129 | // Test constructor called with too few arguments. |
| 130 | function c_too_few(a, b) { |
| 131 | assertSame(undefined, b); |
| 132 | this.x = a + 1; |
| 133 | } |
| 134 | function f_too_few(a) { |
| 135 | var obj = new c_too_few(a); |
| 136 | return obj.x; |
| 137 | } |
| 138 | assertEquals(12, f_too_few(11)); |
| 139 | assertEquals(24, f_too_few(23)); |
| 140 | %OptimizeFunctionOnNextCall(f_too_few); |
| 141 | assertEquals(2, f_too_few(1)); |
| 142 | assertEquals("foo1", f_too_few("foo")) |
| 143 | |
| 144 | |
| 145 | // Test constructor that cannot be inlined. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 146 | function c_unsupported_syntax(val, deopt, counter) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 147 | try { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 148 | deopt.deopt; |
| 149 | this.x = val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 150 | counter.value++; |
| 151 | } catch(e) { |
| 152 | throw new Error(); |
| 153 | } |
| 154 | } |
| 155 | TestInAllContexts(c_unsupported_syntax); |
| 156 | |
| 157 | |
| 158 | // Regression test: Inlined constructors called as functions do not get their |
| 159 | // implicit receiver object set to undefined, even in strict mode. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 160 | function c_strict(val, deopt, counter) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 161 | "use strict"; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 162 | deopt.deopt; |
| 163 | this.x = val; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 164 | counter.value++; |
| 165 | } |
| 166 | TestInAllContexts(c_strict); |