| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_COMPILER_JS_GRAPH_H_ |
| #define V8_COMPILER_JS_GRAPH_H_ |
| |
| #include "src/compiler/common-node-cache.h" |
| #include "src/compiler/common-operator.h" |
| #include "src/compiler/graph.h" |
| #include "src/compiler/js-operator.h" |
| #include "src/compiler/machine-operator.h" |
| #include "src/compiler/node-properties.h" |
| #include "src/isolate.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class SimplifiedOperatorBuilder; |
| class Typer; |
| |
| // Implements a facade on a Graph, enhancing the graph with JS-specific |
| // notions, including various builders for operators, canonicalized global |
| // constants, and various helper methods. |
| class JSGraph : public ZoneObject { |
| public: |
| JSGraph(Isolate* isolate, Graph* graph, CommonOperatorBuilder* common, |
| JSOperatorBuilder* javascript, SimplifiedOperatorBuilder* simplified, |
| MachineOperatorBuilder* machine) |
| : isolate_(isolate), |
| graph_(graph), |
| common_(common), |
| javascript_(javascript), |
| simplified_(simplified), |
| machine_(machine), |
| cache_(zone()) { |
| for (int i = 0; i < kNumCachedNodes; i++) cached_nodes_[i] = nullptr; |
| } |
| |
| // Canonicalized global constants. |
| Node* CEntryStubConstant(int result_size); |
| Node* EmptyFixedArrayConstant(); |
| Node* OptimizedOutConstant(); |
| Node* UndefinedConstant(); |
| Node* TheHoleConstant(); |
| Node* TrueConstant(); |
| Node* FalseConstant(); |
| Node* NullConstant(); |
| Node* ZeroConstant(); |
| Node* OneConstant(); |
| Node* NaNConstant(); |
| |
| // Creates a HeapConstant node, possibly canonicalized, and may access the |
| // heap to inspect the object. |
| Node* HeapConstant(Handle<HeapObject> value); |
| |
| // Creates a Constant node of the appropriate type for the given object. |
| // Accesses the heap to inspect the object and determine whether one of the |
| // canonicalized globals or a number constant should be returned. |
| Node* Constant(Handle<Object> value); |
| |
| // Creates a NumberConstant node, usually canonicalized. |
| Node* Constant(double value); |
| |
| // Creates a NumberConstant node, usually canonicalized. |
| Node* Constant(int32_t value); |
| |
| // Creates a Int32Constant node, usually canonicalized. |
| Node* Int32Constant(int32_t value); |
| Node* Uint32Constant(uint32_t value) { |
| return Int32Constant(bit_cast<int32_t>(value)); |
| } |
| |
| // Creates a HeapConstant node for either true or false. |
| Node* BooleanConstant(bool is_true) { |
| return is_true ? TrueConstant() : FalseConstant(); |
| } |
| |
| // Creates a Int64Constant node, usually canonicalized. |
| Node* Int64Constant(int64_t value); |
| Node* Uint64Constant(uint64_t value) { |
| return Int64Constant(bit_cast<int64_t>(value)); |
| } |
| |
| // Creates a Int32Constant/Int64Constant node, depending on the word size of |
| // the target machine. |
| // TODO(turbofan): Code using Int32Constant/Int64Constant to store pointer |
| // constants is probably not serializable. |
| Node* IntPtrConstant(intptr_t value) { |
| return machine()->Is32() ? Int32Constant(static_cast<int32_t>(value)) |
| : Int64Constant(static_cast<int64_t>(value)); |
| } |
| template <typename T> |
| Node* PointerConstant(T* value) { |
| return IntPtrConstant(bit_cast<intptr_t>(value)); |
| } |
| |
| // Creates a Float32Constant node, usually canonicalized. |
| Node* Float32Constant(float value); |
| |
| // Creates a Float64Constant node, usually canonicalized. |
| Node* Float64Constant(double value); |
| |
| // Creates an ExternalConstant node, usually canonicalized. |
| Node* ExternalConstant(ExternalReference ref); |
| Node* ExternalConstant(Runtime::FunctionId function_id); |
| |
| Node* SmiConstant(int32_t immediate) { |
| DCHECK(Smi::IsValid(immediate)); |
| return Constant(immediate); |
| } |
| |
| // Creates a dummy Constant node, used to satisfy calling conventions of |
| // stubs and runtime functions that do not require a context. |
| Node* NoContextConstant() { return ZeroConstant(); } |
| |
| // Creates an empty frame states for cases where we know that a function |
| // cannot deopt. |
| Node* EmptyFrameState(); |
| |
| // Create a control node that serves as dependency for dead nodes. |
| Node* Dead(); |
| |
| CommonOperatorBuilder* common() const { return common_; } |
| JSOperatorBuilder* javascript() const { return javascript_; } |
| SimplifiedOperatorBuilder* simplified() const { return simplified_; } |
| MachineOperatorBuilder* machine() const { return machine_; } |
| Graph* graph() const { return graph_; } |
| Zone* zone() const { return graph()->zone(); } |
| Isolate* isolate() const { return isolate_; } |
| Factory* factory() const { return isolate()->factory(); } |
| |
| void GetCachedNodes(NodeVector* nodes); |
| |
| private: |
| enum CachedNode { |
| kCEntryStubConstant, |
| kEmptyFixedArrayConstant, |
| kOptimizedOutConstant, |
| kUndefinedConstant, |
| kTheHoleConstant, |
| kTrueConstant, |
| kFalseConstant, |
| kNullConstant, |
| kZeroConstant, |
| kOneConstant, |
| kNaNConstant, |
| kEmptyFrameState, |
| kDead, |
| kNumCachedNodes // Must remain last. |
| }; |
| |
| Isolate* isolate_; |
| Graph* graph_; |
| CommonOperatorBuilder* common_; |
| JSOperatorBuilder* javascript_; |
| SimplifiedOperatorBuilder* simplified_; |
| MachineOperatorBuilder* machine_; |
| CommonNodeCache cache_; |
| Node* cached_nodes_[kNumCachedNodes]; |
| |
| Node* NumberConstant(double value); |
| |
| DISALLOW_COPY_AND_ASSIGN(JSGraph); |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif |