1 // Copyright 2018 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_MACHINE_GRAPH_H_ 6 #define V8_COMPILER_MACHINE_GRAPH_H_ 7 8 #include "src/base/compiler-specific.h" 9 #include "src/compiler/common-node-cache.h" 10 #include "src/compiler/common-operator.h" 11 #include "src/compiler/graph.h" 12 #include "src/compiler/machine-operator.h" 13 #include "src/globals.h" 14 #include "src/runtime/runtime.h" 15 16 namespace v8 { 17 namespace internal { 18 namespace compiler { 19 20 // Implements a facade on a Graph, enhancing the graph with machine-specific 21 // notions, including a builder for common and machine operators, as well 22 // as caching primitive constants. 23 class V8_EXPORT_PRIVATE MachineGraph : public NON_EXPORTED_BASE(ZoneObject) { 24 public: 25 MachineGraph(Graph* graph, CommonOperatorBuilder* common, 26 MachineOperatorBuilder* machine) 27 : graph_(graph), common_(common), machine_(machine), cache_(zone()) {} 28 29 // Creates a Int32Constant node, usually canonicalized. 30 Node* Int32Constant(int32_t value); 31 Node* Uint32Constant(uint32_t value) { 32 return Int32Constant(bit_cast<int32_t>(value)); 33 } 34 35 // Creates a Int64Constant node, usually canonicalized. 36 Node* Int64Constant(int64_t value); 37 Node* Uint64Constant(uint64_t value) { 38 return Int64Constant(bit_cast<int64_t>(value)); 39 } 40 41 // Creates a Int32Constant/Int64Constant node, depending on the word size of 42 // the target machine. 43 // TODO(turbofan): Code using Int32Constant/Int64Constant to store pointer 44 // constants is probably not serializable. 45 Node* IntPtrConstant(intptr_t value); 46 47 Node* RelocatableInt32Constant(int32_t value, RelocInfo::Mode rmode); 48 Node* RelocatableInt64Constant(int64_t value, RelocInfo::Mode rmode); 49 Node* RelocatableIntPtrConstant(intptr_t value, RelocInfo::Mode rmode); 50 51 // Creates a Float32Constant node, usually canonicalized. 52 Node* Float32Constant(float value); 53 54 // Creates a Float64Constant node, usually canonicalized. 55 Node* Float64Constant(double value); 56 57 // Creates a PointerConstant node. 58 Node* PointerConstant(intptr_t value); 59 template <typename T> 60 Node* PointerConstant(T* value) { 61 return PointerConstant(bit_cast<intptr_t>(value)); 62 } 63 64 // Creates an ExternalConstant node, usually canonicalized. 65 Node* ExternalConstant(ExternalReference ref); 66 Node* ExternalConstant(Runtime::FunctionId function_id); 67 68 // Global cache of the dead node. 69 Node* Dead() { 70 return Dead_ ? Dead_ : Dead_ = graph_->NewNode(common_->Dead()); 71 } 72 73 CommonOperatorBuilder* common() const { return common_; } 74 MachineOperatorBuilder* machine() const { return machine_; } 75 Graph* graph() const { return graph_; } 76 Zone* zone() const { return graph()->zone(); } 77 78 protected: 79 Graph* graph_; 80 CommonOperatorBuilder* common_; 81 MachineOperatorBuilder* machine_; 82 CommonNodeCache cache_; 83 Node* Dead_ = nullptr; 84 85 DISALLOW_COPY_AND_ASSIGN(MachineGraph); 86 }; 87 88 } // namespace compiler 89 } // namespace internal 90 } // namespace v8 91 92 #endif // V8_COMPILER_MACHINE_GRAPH_H_ 93
