| // 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/ast.h" |
| #include "src/interpreter/bytecode-array-builder.h" |
| #include "src/interpreter/bytecode-label.h" |
| #include "src/interpreter/bytecodes.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class CompilationInfo; |
| |
| namespace interpreter { |
| |
| class LoopBuilder; |
| |
| class BytecodeGenerator final : public AstVisitor { |
| public: |
| explicit BytecodeGenerator(CompilationInfo* info); |
| |
| Handle<BytecodeArray> MakeBytecode(); |
| |
| #define DECLARE_VISIT(type) void Visit##type(type* node) override; |
| AST_NODE_LIST(DECLARE_VISIT) |
| #undef DECLARE_VISIT |
| |
| // Visiting function for declarations list and statements are overridden. |
| void VisitDeclarations(ZoneList<Declaration*>* declarations) override; |
| void VisitStatements(ZoneList<Statement*>* statments) override; |
| |
| private: |
| class ContextScope; |
| class ControlScope; |
| class ControlScopeForBreakable; |
| class ControlScopeForIteration; |
| class ControlScopeForTopLevel; |
| class ControlScopeForTryCatch; |
| class ControlScopeForTryFinally; |
| class ExpressionResultScope; |
| class EffectResultScope; |
| class AccumulatorResultScope; |
| class RegisterResultScope; |
| class RegisterAllocationScope; |
| |
| void MakeBytecodeBody(); |
| |
| 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); |
| void VisitDelete(UnaryOperation* expr); |
| |
| // Used by flow control routines to evaluate loop condition. |
| void VisitCondition(Expression* expr); |
| |
| // Helper visitors which perform common operations. |
| Register VisitArguments(ZoneList<Expression*>* arguments); |
| |
| // Visit a keyed super property load. The optional |
| // |opt_receiver_out| register will have the receiver stored to it |
| // if it's a valid register. The loaded value is placed in the |
| // accumulator. |
| void VisitKeyedSuperPropertyLoad(Property* property, |
| Register opt_receiver_out); |
| |
| // Visit a named super property load. The optional |
| // |opt_receiver_out| register will have the receiver stored to it |
| // if it's a valid register. The loaded value is placed in the |
| // accumulator. |
| void VisitNamedSuperPropertyLoad(Property* property, |
| Register opt_receiver_out); |
| |
| void VisitPropertyLoad(Register obj, Property* expr); |
| void VisitPropertyLoadForAccumulator(Register obj, Property* expr); |
| |
| void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot, |
| TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
| void VisitVariableLoadForAccumulatorValue( |
| Variable* variable, FeedbackVectorSlot slot, |
| TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
| MUST_USE_RESULT Register |
| VisitVariableLoadForRegisterValue(Variable* variable, FeedbackVectorSlot slot, |
| TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
| void VisitVariableAssignment(Variable* variable, Token::Value op, |
| FeedbackVectorSlot slot); |
| |
| void BuildNamedSuperPropertyStore(Register receiver, Register home_object, |
| Register name, Register value); |
| void BuildKeyedSuperPropertyStore(Register receiver, Register home_object, |
| Register key, Register value); |
| void BuildNamedSuperPropertyLoad(Register receiver, Register home_object, |
| Register name); |
| void BuildKeyedSuperPropertyLoad(Register receiver, Register home_object, |
| Register key); |
| |
| void BuildAbort(BailoutReason bailout_reason); |
| void BuildThrowIfHole(Handle<String> name); |
| void BuildThrowIfNotHole(Handle<String> name); |
| void BuildThrowReassignConstant(Handle<String> name); |
| void BuildThrowReferenceError(Handle<String> name); |
| void BuildHoleCheckForVariableLoad(VariableMode mode, Handle<String> name); |
| void BuildHoleCheckForVariableAssignment(Variable* variable, Token::Value op); |
| |
| // Build jump to targets[value], where |
| // start_index <= value < start_index + size. |
| void BuildIndexedJump(Register value, size_t start_index, size_t size, |
| ZoneVector<BytecodeLabel>& targets); |
| |
| void VisitGeneratorPrologue(); |
| |
| void VisitArgumentsObject(Variable* variable); |
| void VisitRestArgumentsArray(Variable* rest); |
| void VisitCallSuper(Call* call); |
| void VisitClassLiteralContents(ClassLiteral* expr); |
| void VisitClassLiteralForRuntimeDefinition(ClassLiteral* expr); |
| void VisitClassLiteralProperties(ClassLiteral* expr, Register literal, |
| Register prototype); |
| void VisitClassLiteralStaticPrototypeWithComputedName(Register name); |
| void VisitThisFunctionVariable(Variable* variable); |
| void VisitNewTargetVariable(Variable* variable); |
| void VisitNewLocalFunctionContext(); |
| void VisitBuildLocalActivationContext(); |
| void VisitBlockDeclarationsAndStatements(Block* stmt); |
| void VisitNewLocalBlockContext(Scope* scope); |
| void VisitNewLocalCatchContext(Variable* variable); |
| void VisitNewLocalWithContext(); |
| 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); |
| void VisitForInAssignment(Expression* expr, FeedbackVectorSlot slot); |
| |
| // Visit the header/body of a loop iteration. |
| void VisitIterationHeader(IterationStatement* stmt, |
| LoopBuilder* loop_builder); |
| void VisitIterationBody(IterationStatement* stmt, LoopBuilder* loop_builder); |
| |
| // Visit a statement and switch scopes, the context is in the accumulator. |
| void VisitInScope(Statement* stmt, Scope* scope); |
| |
| // Visitors for obtaining expression result in the accumulator, in a |
| // register, or just getting the effect. |
| void VisitForAccumulatorValue(Expression* expr); |
| void VisitForAccumulatorValueOrTheHole(Expression* expr); |
| MUST_USE_RESULT Register VisitForRegisterValue(Expression* expr); |
| void VisitForRegisterValue(Expression* expr, Register destination); |
| void VisitForEffect(Expression* expr); |
| |
| // Methods for tracking and remapping register. |
| void RecordStoreToRegister(Register reg); |
| Register LoadFromAliasedRegister(Register reg); |
| |
| // Methods for tracking try-block nesting. |
| bool IsInsideTryCatch() const { return try_catch_nesting_level_ > 0; } |
| bool IsInsideTryFinally() const { return try_finally_nesting_level_ > 0; } |
| |
| // Initialize an array of temporary registers with consecutive registers. |
| template <size_t N> |
| void InitializeWithConsecutiveRegisters(Register (®isters)[N]); |
| |
| inline BytecodeArrayBuilder* builder() const { return builder_; } |
| inline Isolate* isolate() const { return isolate_; } |
| inline Zone* zone() const { return zone_; } |
| inline Scope* scope() const { return scope_; } |
| inline CompilationInfo* info() const { return 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_; } |
| inline void set_register_allocator( |
| RegisterAllocationScope* register_allocator) { |
| register_allocator_ = register_allocator; |
| } |
| RegisterAllocationScope* register_allocator() const { |
| return register_allocator_; |
| } |
| |
| ZoneVector<Handle<Object>>* globals() { return &globals_; } |
| inline LanguageMode language_mode() 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_; |
| RegisterAllocationScope* register_allocator_; |
| ZoneVector<BytecodeLabel> generator_resume_points_; |
| Register generator_state_; |
| int try_catch_nesting_level_; |
| int try_finally_nesting_level_; |
| }; |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODE_GENERATOR_H_ |