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1 // Copyright 2015 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/js-global-object-specialization.h" | 5 #include "src/compiler/js-global-object-specialization.h" |
6 | 6 |
7 #include "src/compilation-dependencies.h" | 7 #include "src/compilation-dependencies.h" |
8 #include "src/compiler/access-builder.h" | 8 #include "src/compiler/access-builder.h" |
9 #include "src/compiler/common-operator.h" | 9 #include "src/compiler/common-operator.h" |
10 #include "src/compiler/js-graph.h" | 10 #include "src/compiler/js-graph.h" |
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162 // Don't even bother trying to lower stores to read-only data properties. | 162 // Don't even bother trying to lower stores to read-only data properties. |
163 if (property_details.IsReadOnly()) return NoChange(); | 163 if (property_details.IsReadOnly()) return NoChange(); |
164 switch (property_details.cell_type()) { | 164 switch (property_details.cell_type()) { |
165 case PropertyCellType::kUndefined: { | 165 case PropertyCellType::kUndefined: { |
166 return NoChange(); | 166 return NoChange(); |
167 } | 167 } |
168 case PropertyCellType::kConstant: { | 168 case PropertyCellType::kConstant: { |
169 // Record a code dependency on the cell, and just deoptimize if the new | 169 // Record a code dependency on the cell, and just deoptimize if the new |
170 // value doesn't match the previous value stored inside the cell. | 170 // value doesn't match the previous value stored inside the cell. |
171 dependencies()->AssumePropertyCell(property_cell); | 171 dependencies()->AssumePropertyCell(property_cell); |
172 Node* check = | 172 Node* check = graph()->NewNode(simplified()->ReferenceEqual(), value, |
173 graph()->NewNode(simplified()->ReferenceEqual(Type::Tagged()), value, | 173 jsgraph()->Constant(property_cell_value)); |
174 jsgraph()->Constant(property_cell_value)); | |
175 effect = | 174 effect = |
176 graph()->NewNode(simplified()->CheckIf(), check, effect, control); | 175 graph()->NewNode(simplified()->CheckIf(), check, effect, control); |
177 break; | 176 break; |
178 } | 177 } |
179 case PropertyCellType::kConstantType: { | 178 case PropertyCellType::kConstantType: { |
180 // Record a code dependency on the cell, and just deoptimize if the new | 179 // Record a code dependency on the cell, and just deoptimize if the new |
181 // values' type doesn't match the type of the previous value in the cell. | 180 // values' type doesn't match the type of the previous value in the cell. |
182 dependencies()->AssumePropertyCell(property_cell); | 181 dependencies()->AssumePropertyCell(property_cell); |
183 Type* property_cell_value_type; | 182 Type* property_cell_value_type; |
184 if (property_cell_value->IsHeapObject()) { | 183 if (property_cell_value->IsHeapObject()) { |
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273 } | 272 } |
274 | 273 |
275 | 274 |
276 SimplifiedOperatorBuilder* JSGlobalObjectSpecialization::simplified() const { | 275 SimplifiedOperatorBuilder* JSGlobalObjectSpecialization::simplified() const { |
277 return jsgraph()->simplified(); | 276 return jsgraph()->simplified(); |
278 } | 277 } |
279 | 278 |
280 } // namespace compiler | 279 } // namespace compiler |
281 } // namespace internal | 280 } // namespace internal |
282 } // namespace v8 | 281 } // namespace v8 |
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