| // 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_INTERPRETER_BYTECODE_GENERATOR_H_ |
| #define V8_INTERPRETER_BYTECODE_GENERATOR_H_ |
| |
| #include "src/ast.h" |
| #include "src/interpreter/bytecode-array-builder.h" |
| #include "src/interpreter/bytecodes.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| class BytecodeGenerator : public AstVisitor { |
| public: |
| BytecodeGenerator(Isolate* isolate, Zone* zone); |
| virtual ~BytecodeGenerator(); |
| |
| Handle<BytecodeArray> MakeBytecode(CompilationInfo* info); |
| |
| #define DECLARE_VISIT(type) void Visit##type(type* node) override; |
| AST_NODE_LIST(DECLARE_VISIT) |
| #undef DECLARE_VISIT |
| |
| // Visiting function for declarations list is overridden. |
| void VisitDeclarations(ZoneList<Declaration*>* declarations) override; |
| |
| private: |
| class ContextScope; |
| class ControlScope; |
| class ControlScopeForIteration; |
| class ExpressionResultScope; |
| class EffectResultScope; |
| class AccumulatorResultScope; |
| class RegisterResultScope; |
| |
| void MakeBytecodeBody(); |
| Register NextContextRegister() const; |
| |
| DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); |
| |
| // Dispatched from VisitBinaryOperation. |
| void VisitArithmeticExpression(BinaryOperation* binop); |
| void VisitCommaExpression(BinaryOperation* binop); |
| void VisitLogicalOrExpression(BinaryOperation* binop); |
| void VisitLogicalAndExpression(BinaryOperation* binop); |
| |
| // Dispatched from VisitUnaryOperation. |
| void VisitVoid(UnaryOperation* expr); |
| void VisitTypeOf(UnaryOperation* expr); |
| void VisitNot(UnaryOperation* expr); |
| |
| // Helper visitors which perform common operations. |
| Register VisitArguments(ZoneList<Expression*>* arguments); |
| |
| void VisitPropertyLoad(Register obj, Property* expr); |
| void VisitPropertyLoadForAccumulator(Register obj, Property* expr); |
| |
| void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot); |
| void VisitVariableLoadForAccumulatorValue(Variable* variable, |
| FeedbackVectorSlot slot); |
| MUST_USE_RESULT Register VisitVariableLoadForRegisterValue( |
| Variable* variable, FeedbackVectorSlot slot); |
| void VisitVariableAssignment(Variable* variable, FeedbackVectorSlot slot); |
| |
| void VisitArgumentsObject(Variable* variable); |
| void VisitThisFunctionVariable(Variable* variable); |
| void VisitNewTargetVariable(Variable* variable); |
| void VisitNewLocalFunctionContext(); |
| void VisitBuildLocalActivationContext(); |
| void VisitNewLocalBlockContext(Scope* scope); |
| void VisitFunctionClosureForContext(); |
| void VisitSetHomeObject(Register value, Register home_object, |
| ObjectLiteralProperty* property, int slot_number = 0); |
| void VisitObjectLiteralAccessor(Register home_object, |
| ObjectLiteralProperty* property, |
| Register value_out); |
| |
| |
| // Visitors for obtaining expression result in the accumulator, in a |
| // register, or just getting the effect. |
| void VisitForAccumulatorValue(Expression* expression); |
| MUST_USE_RESULT Register VisitForRegisterValue(Expression* expression); |
| void VisitForEffect(Expression* node); |
| |
| // Methods marking the start and end of binary expressions. |
| void PrepareForBinaryExpression(); |
| void CompleteBinaryExpression(); |
| |
| // Methods for tracking and remapping register. |
| void RecordStoreToRegister(Register reg); |
| Register LoadFromAliasedRegister(Register reg); |
| |
| inline BytecodeArrayBuilder* builder() { return &builder_; } |
| |
| inline Isolate* isolate() const { return isolate_; } |
| inline Zone* zone() const { return zone_; } |
| |
| inline Scope* scope() const { return scope_; } |
| inline void set_scope(Scope* scope) { scope_ = scope; } |
| inline CompilationInfo* info() const { return info_; } |
| inline void set_info(CompilationInfo* info) { info_ = info; } |
| |
| inline ControlScope* execution_control() const { return execution_control_; } |
| inline void set_execution_control(ControlScope* scope) { |
| execution_control_ = scope; |
| } |
| inline ContextScope* execution_context() const { return execution_context_; } |
| inline void set_execution_context(ContextScope* context) { |
| execution_context_ = context; |
| } |
| inline void set_execution_result(ExpressionResultScope* execution_result) { |
| execution_result_ = execution_result; |
| } |
| ExpressionResultScope* execution_result() const { return execution_result_; } |
| |
| ZoneVector<Handle<Object>>* globals() { return &globals_; } |
| inline LanguageMode language_mode() const; |
| Strength language_mode_strength() const; |
| int feedback_index(FeedbackVectorSlot slot) const; |
| |
| Isolate* isolate_; |
| Zone* zone_; |
| BytecodeArrayBuilder builder_; |
| CompilationInfo* info_; |
| Scope* scope_; |
| ZoneVector<Handle<Object>> globals_; |
| ControlScope* execution_control_; |
| ContextScope* execution_context_; |
| ExpressionResultScope* execution_result_; |
| |
| int binary_expression_depth_; |
| ZoneSet<int> binary_expression_hazard_set_; |
| }; |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODE_GENERATOR_H_ |