Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 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 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5 | #include "src/code-stubs.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6 | #include "src/compiler/js-graph.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 7 | #include "src/compiler/node-properties.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #include "src/compiler/typer.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | namespace compiler { |
| 13 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 14 | #define CACHED(name, expr) \ |
| 15 | cached_nodes_[name] ? cached_nodes_[name] : (cached_nodes_[name] = (expr)) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 16 | |
| 17 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 18 | Node* JSGraph::CEntryStubConstant(int result_size) { |
| 19 | if (result_size == 1) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 20 | return CACHED(kCEntryStubConstant, |
| 21 | HeapConstant(CEntryStub(isolate(), 1).GetCode())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 22 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 23 | return HeapConstant(CEntryStub(isolate(), result_size).GetCode()); |
| 24 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 25 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 26 | |
| 27 | Node* JSGraph::EmptyFixedArrayConstant() { |
| 28 | return CACHED(kEmptyFixedArrayConstant, |
| 29 | HeapConstant(factory()->empty_fixed_array())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | } |
| 31 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 32 | Node* JSGraph::OptimizedOutConstant() { |
| 33 | return CACHED(kOptimizedOutConstant, |
| 34 | HeapConstant(factory()->optimized_out())); |
| 35 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 36 | |
| 37 | Node* JSGraph::UndefinedConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 38 | return CACHED(kUndefinedConstant, HeapConstant(factory()->undefined_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | |
| 42 | Node* JSGraph::TheHoleConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 43 | return CACHED(kTheHoleConstant, HeapConstant(factory()->the_hole_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | |
| 47 | Node* JSGraph::TrueConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 48 | return CACHED(kTrueConstant, HeapConstant(factory()->true_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | |
| 52 | Node* JSGraph::FalseConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 53 | return CACHED(kFalseConstant, HeapConstant(factory()->false_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | |
| 57 | Node* JSGraph::NullConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 58 | return CACHED(kNullConstant, HeapConstant(factory()->null_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | |
| 62 | Node* JSGraph::ZeroConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 63 | return CACHED(kZeroConstant, NumberConstant(0.0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | |
| 67 | Node* JSGraph::OneConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 68 | return CACHED(kOneConstant, NumberConstant(1.0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | |
| 72 | Node* JSGraph::NaNConstant() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 73 | return CACHED(kNaNConstant, |
| 74 | NumberConstant(std::numeric_limits<double>::quiet_NaN())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 78 | Node* JSGraph::HeapConstant(Handle<HeapObject> value) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 79 | if (value->IsConsString()) { |
| 80 | value = String::Flatten(Handle<String>::cast(value), TENURED); |
| 81 | } |
| 82 | Node** loc = cache_.FindHeapConstant(value); |
| 83 | if (*loc == nullptr) { |
| 84 | *loc = graph()->NewNode(common()->HeapConstant(value)); |
| 85 | } |
| 86 | return *loc; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | |
| 90 | Node* JSGraph::Constant(Handle<Object> value) { |
| 91 | // Dereference the handle to determine if a number constant or other |
| 92 | // canonicalized node can be used. |
| 93 | if (value->IsNumber()) { |
| 94 | return Constant(value->Number()); |
| 95 | } else if (value->IsUndefined()) { |
| 96 | return UndefinedConstant(); |
| 97 | } else if (value->IsTrue()) { |
| 98 | return TrueConstant(); |
| 99 | } else if (value->IsFalse()) { |
| 100 | return FalseConstant(); |
| 101 | } else if (value->IsNull()) { |
| 102 | return NullConstant(); |
| 103 | } else if (value->IsTheHole()) { |
| 104 | return TheHoleConstant(); |
| 105 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 106 | return HeapConstant(Handle<HeapObject>::cast(value)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | } |
| 108 | } |
| 109 | |
| 110 | |
| 111 | Node* JSGraph::Constant(double value) { |
| 112 | if (bit_cast<int64_t>(value) == bit_cast<int64_t>(0.0)) return ZeroConstant(); |
| 113 | if (bit_cast<int64_t>(value) == bit_cast<int64_t>(1.0)) return OneConstant(); |
| 114 | return NumberConstant(value); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | Node* JSGraph::Constant(int32_t value) { |
| 119 | if (value == 0) return ZeroConstant(); |
| 120 | if (value == 1) return OneConstant(); |
| 121 | return NumberConstant(value); |
| 122 | } |
| 123 | |
| 124 | |
| 125 | Node* JSGraph::Int32Constant(int32_t value) { |
| 126 | Node** loc = cache_.FindInt32Constant(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 127 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 128 | *loc = graph()->NewNode(common()->Int32Constant(value)); |
| 129 | } |
| 130 | return *loc; |
| 131 | } |
| 132 | |
| 133 | |
| 134 | Node* JSGraph::Int64Constant(int64_t value) { |
| 135 | Node** loc = cache_.FindInt64Constant(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 137 | *loc = graph()->NewNode(common()->Int64Constant(value)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | } |
| 139 | return *loc; |
| 140 | } |
| 141 | |
| 142 | |
| 143 | Node* JSGraph::NumberConstant(double value) { |
| 144 | Node** loc = cache_.FindNumberConstant(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 145 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 146 | *loc = graph()->NewNode(common()->NumberConstant(value)); |
| 147 | } |
| 148 | return *loc; |
| 149 | } |
| 150 | |
| 151 | |
| 152 | Node* JSGraph::Float32Constant(float value) { |
| 153 | Node** loc = cache_.FindFloat32Constant(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 154 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 155 | *loc = graph()->NewNode(common()->Float32Constant(value)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 156 | } |
| 157 | return *loc; |
| 158 | } |
| 159 | |
| 160 | |
| 161 | Node* JSGraph::Float64Constant(double value) { |
| 162 | Node** loc = cache_.FindFloat64Constant(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 163 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 164 | *loc = graph()->NewNode(common()->Float64Constant(value)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 165 | } |
| 166 | return *loc; |
| 167 | } |
| 168 | |
| 169 | |
| 170 | Node* JSGraph::ExternalConstant(ExternalReference reference) { |
| 171 | Node** loc = cache_.FindExternalConstant(reference); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 172 | if (*loc == nullptr) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 173 | *loc = graph()->NewNode(common()->ExternalConstant(reference)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 174 | } |
| 175 | return *loc; |
| 176 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 177 | |
| 178 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 179 | Node* JSGraph::ExternalConstant(Runtime::FunctionId function_id) { |
| 180 | return ExternalConstant(ExternalReference(function_id, isolate())); |
| 181 | } |
| 182 | |
| 183 | |
| 184 | Node* JSGraph::EmptyFrameState() { |
| 185 | Node* empty_frame_state = cached_nodes_[kEmptyFrameState]; |
| 186 | if (!empty_frame_state || empty_frame_state->IsDead()) { |
| 187 | Node* state_values = graph()->NewNode(common()->StateValues(0)); |
| 188 | empty_frame_state = graph()->NewNode( |
| 189 | common()->FrameState(BailoutId::None(), |
| 190 | OutputFrameStateCombine::Ignore(), nullptr), |
| 191 | state_values, state_values, state_values, NoContextConstant(), |
| 192 | UndefinedConstant(), graph()->start()); |
| 193 | cached_nodes_[kEmptyFrameState] = empty_frame_state; |
| 194 | } |
| 195 | return empty_frame_state; |
| 196 | } |
| 197 | |
| 198 | |
| 199 | Node* JSGraph::Dead() { |
| 200 | return CACHED(kDead, graph()->NewNode(common()->Dead())); |
| 201 | } |
| 202 | |
| 203 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 204 | void JSGraph::GetCachedNodes(NodeVector* nodes) { |
| 205 | cache_.GetCachedNodes(nodes); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 206 | for (size_t i = 0; i < arraysize(cached_nodes_); i++) { |
| 207 | if (Node* node = cached_nodes_[i]) { |
| 208 | if (!node->IsDead()) nodes->push_back(node); |
| 209 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 210 | } |
| 211 | } |
| 212 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 213 | } // namespace compiler |
| 214 | } // namespace internal |
| 215 | } // namespace v8 |