| // Copyright 2015 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_CODE_STUB_ASSEMBLER_H_ |
| #define V8_COMPILER_CODE_STUB_ASSEMBLER_H_ |
| |
| #include <map> |
| |
| // Clients of this interface shouldn't depend on lots of compiler internals. |
| // Do not include anything from src/compiler here! |
| #include "src/allocation.h" |
| #include "src/builtins.h" |
| #include "src/heap/heap.h" |
| #include "src/machine-type.h" |
| #include "src/runtime/runtime.h" |
| #include "src/zone-containers.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class CallInterfaceDescriptor; |
| class Isolate; |
| class Zone; |
| |
| namespace compiler { |
| |
| class CallDescriptor; |
| class Graph; |
| class Node; |
| class Operator; |
| class RawMachineAssembler; |
| class RawMachineLabel; |
| class Schedule; |
| |
| #define CODE_STUB_ASSEMBLER_BINARY_OP_LIST(V) \ |
| V(IntPtrAdd) \ |
| V(IntPtrSub) \ |
| V(Int32Add) \ |
| V(Int32Sub) \ |
| V(Int32Mul) \ |
| V(Int32GreaterThanOrEqual) \ |
| V(WordEqual) \ |
| V(WordNotEqual) \ |
| V(WordOr) \ |
| V(WordAnd) \ |
| V(WordXor) \ |
| V(WordShl) \ |
| V(WordShr) \ |
| V(WordSar) \ |
| V(WordRor) \ |
| V(Word32Equal) \ |
| V(Word32NotEqual) \ |
| V(Word32Or) \ |
| V(Word32And) \ |
| V(Word32Xor) \ |
| V(Word32Shl) \ |
| V(Word32Shr) \ |
| V(Word32Sar) \ |
| V(Word32Ror) \ |
| V(Word64Equal) \ |
| V(Word64NotEqual) \ |
| V(Word64Or) \ |
| V(Word64And) \ |
| V(Word64Xor) \ |
| V(Word64Shr) \ |
| V(Word64Sar) \ |
| V(Word64Ror) \ |
| V(UintPtrGreaterThanOrEqual) |
| |
| class CodeStubAssembler { |
| public: |
| // |result_size| specifies the number of results returned by the stub. |
| // TODO(rmcilroy): move result_size to the CallInterfaceDescriptor. |
| CodeStubAssembler(Isolate* isolate, Zone* zone, |
| const CallInterfaceDescriptor& descriptor, |
| Code::Flags flags, const char* name, |
| size_t result_size = 1); |
| virtual ~CodeStubAssembler(); |
| |
| Handle<Code> GenerateCode(); |
| |
| class Label; |
| class Variable { |
| public: |
| explicit Variable(CodeStubAssembler* assembler, MachineRepresentation rep); |
| void Bind(Node* value); |
| Node* value() const; |
| MachineRepresentation rep() const; |
| bool IsBound() const; |
| |
| private: |
| friend class CodeStubAssembler; |
| class Impl; |
| Impl* impl_; |
| }; |
| |
| // =========================================================================== |
| // Base Assembler |
| // =========================================================================== |
| |
| // Constants. |
| Node* Int32Constant(int value); |
| Node* IntPtrConstant(intptr_t value); |
| Node* NumberConstant(double value); |
| Node* HeapConstant(Handle<HeapObject> object); |
| Node* BooleanConstant(bool value); |
| Node* ExternalConstant(ExternalReference address); |
| |
| Node* Parameter(int value); |
| void Return(Node* value); |
| |
| void Bind(Label* label); |
| void Goto(Label* label); |
| void Branch(Node* condition, Label* true_label, Label* false_label); |
| |
| void Switch(Node* index, Label* default_label, int32_t* case_values, |
| Label** case_labels, size_t case_count); |
| |
| // Access to the frame pointer |
| Node* LoadFramePointer(); |
| Node* LoadParentFramePointer(); |
| |
| // Access to the stack pointer |
| Node* LoadStackPointer(); |
| |
| // Load raw memory location. |
| Node* Load(MachineType rep, Node* base); |
| Node* Load(MachineType rep, Node* base, Node* index); |
| |
| // Store value to raw memory location. |
| Node* Store(MachineRepresentation rep, Node* base, Node* value); |
| Node* Store(MachineRepresentation rep, Node* base, Node* index, Node* value); |
| Node* StoreNoWriteBarrier(MachineRepresentation rep, Node* base, Node* value); |
| Node* StoreNoWriteBarrier(MachineRepresentation rep, Node* base, Node* index, |
| Node* value); |
| |
| // Basic arithmetic operations. |
| #define DECLARE_CODE_STUB_ASSEMBER_BINARY_OP(name) Node* name(Node* a, Node* b); |
| CODE_STUB_ASSEMBLER_BINARY_OP_LIST(DECLARE_CODE_STUB_ASSEMBER_BINARY_OP) |
| #undef DECLARE_CODE_STUB_ASSEMBER_BINARY_OP |
| |
| Node* WordShl(Node* value, int shift); |
| |
| // Conversions |
| Node* ChangeInt32ToInt64(Node* value); |
| |
| // Projections |
| Node* Projection(int index, Node* value); |
| |
| // Calls |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context); |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1); |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, |
| Node* arg2); |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, |
| Node* arg2, Node* arg3); |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, |
| Node* arg2, Node* arg3, Node* arg4); |
| Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, |
| Node* arg2, Node* arg3, Node* arg4, Node* arg5); |
| |
| Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, |
| Node* arg1); |
| Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, |
| Node* arg1, Node* arg2); |
| Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, |
| Node* arg1, Node* arg2, Node* arg3); |
| Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, |
| Node* arg1, Node* arg2, Node* arg3, Node* arg4); |
| |
| Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node* context, Node* arg1, size_t result_size = 1); |
| Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node* context, Node* arg1, Node* arg2, size_t result_size = 1); |
| Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node* context, Node* arg1, Node* arg2, Node* arg3, |
| size_t result_size = 1); |
| Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node* context, Node* arg1, Node* arg2, Node* arg3, Node* arg4, |
| size_t result_size = 1); |
| Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node* context, Node* arg1, Node* arg2, Node* arg3, Node* arg4, |
| Node* arg5, size_t result_size = 1); |
| |
| Node* TailCallStub(CodeStub& stub, Node** args); |
| Node* TailCall(const CallInterfaceDescriptor& descriptor, Node* target, |
| Node** args, size_t result_size = 1); |
| |
| // =========================================================================== |
| // Macros |
| // =========================================================================== |
| |
| // Tag and untag Smi values. |
| Node* SmiTag(Node* value); |
| Node* SmiUntag(Node* value); |
| |
| // Load a value from the root array. |
| Node* LoadRoot(Heap::RootListIndex root_index); |
| |
| // Check a value for smi-ness |
| Node* WordIsSmi(Node* a); |
| |
| // Load an object pointer from a buffer that isn't in the heap. |
| Node* LoadBufferObject(Node* buffer, int offset); |
| // Load a field from an object on the heap. |
| Node* LoadObjectField(Node* object, int offset); |
| |
| // Load an array element from a FixedArray. |
| Node* LoadFixedArrayElementSmiIndex(Node* object, Node* smi_index, |
| int additional_offset = 0); |
| Node* LoadFixedArrayElementConstantIndex(Node* object, int index); |
| |
| protected: |
| // Protected helpers which delegate to RawMachineAssembler. |
| Graph* graph(); |
| Isolate* isolate(); |
| Zone* zone(); |
| |
| // Enables subclasses to perform operations before and after a call. |
| virtual void CallPrologue(); |
| virtual void CallEpilogue(); |
| |
| private: |
| friend class CodeStubAssemblerTester; |
| |
| Node* CallN(CallDescriptor* descriptor, Node* code_target, Node** args); |
| Node* TailCallN(CallDescriptor* descriptor, Node* code_target, Node** args); |
| |
| Node* SmiShiftBitsConstant(); |
| |
| base::SmartPointer<RawMachineAssembler> raw_assembler_; |
| Code::Flags flags_; |
| const char* name_; |
| bool code_generated_; |
| ZoneVector<Variable::Impl*> variables_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CodeStubAssembler); |
| }; |
| |
| class CodeStubAssembler::Label { |
| public: |
| explicit Label(CodeStubAssembler* assembler); |
| Label(CodeStubAssembler* assembler, int merged_variable_count, |
| CodeStubAssembler::Variable** merged_variables); |
| Label(CodeStubAssembler* assembler, |
| CodeStubAssembler::Variable* merged_variable); |
| ~Label() {} |
| |
| private: |
| friend class CodeStubAssembler; |
| |
| void Bind(); |
| void MergeVariables(); |
| |
| bool bound_; |
| size_t merge_count_; |
| CodeStubAssembler* assembler_; |
| RawMachineLabel* label_; |
| // Map of variables that need to be merged to their phi nodes (or placeholders |
| // for those phis). |
| std::map<Variable::Impl*, Node*> variable_phis_; |
| // Map of variables to the list of value nodes that have been added from each |
| // merge path in their order of merging. |
| std::map<Variable::Impl*, std::vector<Node*>> variable_merges_; |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_CODE_STUB_ASSEMBLER_H_ |