1 // Copyright 2016 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 #ifndef V8_COMPILER_JS_CREATE_LOWERING_H_ 6 #define V8_COMPILER_JS_CREATE_LOWERING_H_ 7 8 #include "src/base/compiler-specific.h" 9 #include "src/common/globals.h" 10 #include "src/compiler/graph-reducer.h" 11 12 namespace v8 { 13 namespace internal { 14 15 // Forward declarations. 16 class AllocationSiteUsageContext; 17 class Factory; 18 class JSRegExp; 19 20 namespace compiler { 21 22 // Forward declarations. 23 class CommonOperatorBuilder; 24 class CompilationDependencies; 25 class JSGraph; 26 class JSOperatorBuilder; 27 class MachineOperatorBuilder; 28 class SimplifiedOperatorBuilder; 29 class SlackTrackingPrediction; 30 31 // Lowers JSCreate-level operators to fast (inline) allocations. 32 class V8_EXPORT_PRIVATE JSCreateLowering final NON_EXPORTED_BASE(AdvancedReducer)33 : public NON_EXPORTED_BASE(AdvancedReducer) { 34 public: 35 JSCreateLowering(Editor* editor, CompilationDependencies* dependencies, 36 JSGraph* jsgraph, JSHeapBroker* broker, Zone* zone) 37 : AdvancedReducer(editor), 38 dependencies_(dependencies), 39 jsgraph_(jsgraph), 40 broker_(broker), 41 zone_(zone) {} 42 ~JSCreateLowering() final = default; 43 44 const char* reducer_name() const override { return "JSCreateLowering"; } 45 46 Reduction Reduce(Node* node) final; 47 48 private: 49 Reduction ReduceJSCreate(Node* node); 50 Reduction ReduceJSCreateArguments(Node* node); 51 Reduction ReduceJSCreateArray(Node* node); 52 Reduction ReduceJSCreateArrayIterator(Node* node); 53 Reduction ReduceJSCreateAsyncFunctionObject(Node* node); 54 Reduction ReduceJSCreateCollectionIterator(Node* node); 55 Reduction ReduceJSCreateBoundFunction(Node* node); 56 Reduction ReduceJSCreateClosure(Node* node); 57 Reduction ReduceJSCreateIterResultObject(Node* node); 58 Reduction ReduceJSCreateStringIterator(Node* node); 59 Reduction ReduceJSCreateKeyValueArray(Node* node); 60 Reduction ReduceJSCreatePromise(Node* node); 61 Reduction ReduceJSCreateLiteralArrayOrObject(Node* node); 62 Reduction ReduceJSCreateEmptyLiteralObject(Node* node); 63 Reduction ReduceJSCreateEmptyLiteralArray(Node* node); 64 Reduction ReduceJSCreateLiteralRegExp(Node* node); 65 Reduction ReduceJSCreateFunctionContext(Node* node); 66 Reduction ReduceJSCreateWithContext(Node* node); 67 Reduction ReduceJSCreateCatchContext(Node* node); 68 Reduction ReduceJSCreateBlockContext(Node* node); 69 Reduction ReduceJSCreateGeneratorObject(Node* node); 70 Reduction ReduceJSGetTemplateObject(Node* node); 71 Reduction ReduceNewArray( 72 Node* node, Node* length, MapRef initial_map, ElementsKind elements_kind, 73 AllocationType allocation, 74 const SlackTrackingPrediction& slack_tracking_prediction); 75 Reduction ReduceNewArray( 76 Node* node, Node* length, int capacity, MapRef initial_map, 77 ElementsKind elements_kind, AllocationType allocation, 78 const SlackTrackingPrediction& slack_tracking_prediction); 79 Reduction ReduceNewArray( 80 Node* node, std::vector<Node*> values, MapRef initial_map, 81 ElementsKind elements_kind, AllocationType allocation, 82 const SlackTrackingPrediction& slack_tracking_prediction); 83 Reduction ReduceJSCreateObject(Node* node); 84 85 Node* AllocateArguments(Node* effect, Node* control, Node* frame_state); 86 Node* AllocateRestArguments(Node* effect, Node* control, Node* frame_state, 87 int start_index); 88 Node* AllocateAliasedArguments(Node* effect, Node* control, Node* frame_state, 89 Node* context, 90 const SharedFunctionInfoRef& shared, 91 bool* has_aliased_arguments); 92 Node* AllocateAliasedArguments(Node* effect, Node* control, Node* context, 93 Node* arguments_frame, Node* arguments_length, 94 const SharedFunctionInfoRef& shared, 95 bool* has_aliased_arguments); 96 Node* AllocateElements(Node* effect, Node* control, 97 ElementsKind elements_kind, int capacity, 98 AllocationType allocation); 99 Node* AllocateElements(Node* effect, Node* control, 100 ElementsKind elements_kind, Node* capacity_and_length); 101 Node* AllocateElements(Node* effect, Node* control, 102 ElementsKind elements_kind, 103 std::vector<Node*> const& values, 104 AllocationType allocation); 105 Node* AllocateFastLiteral(Node* effect, Node* control, 106 JSObjectRef boilerplate, AllocationType allocation); 107 Node* AllocateFastLiteralElements(Node* effect, Node* control, 108 JSObjectRef boilerplate, 109 AllocationType allocation); 110 Node* AllocateLiteralRegExp(Node* effect, Node* control, 111 JSRegExpRef boilerplate); 112 113 Factory* factory() const; 114 Graph* graph() const; 115 JSGraph* jsgraph() const { return jsgraph_; } 116 NativeContextRef native_context() const; 117 CommonOperatorBuilder* common() const; 118 SimplifiedOperatorBuilder* simplified() const; 119 CompilationDependencies* dependencies() const { return dependencies_; } 120 JSHeapBroker* broker() const { return broker_; } 121 Zone* zone() const { return zone_; } 122 123 CompilationDependencies* const dependencies_; 124 JSGraph* const jsgraph_; 125 JSHeapBroker* const broker_; 126 Zone* const zone_; 127 }; 128 129 } // namespace compiler 130 } // namespace internal 131 } // namespace v8 132 133 #endif // V8_COMPILER_JS_CREATE_LOWERING_H_ 134