Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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_INTERPRETER_BYTECODE_GENERATOR_H_ |
| 6 | #define V8_INTERPRETER_BYTECODE_GENERATOR_H_ |
| 7 | |
| 8 | #include "src/ast/ast.h" |
| 9 | #include "src/interpreter/bytecode-array-builder.h" |
| 10 | #include "src/interpreter/bytecodes.h" |
| 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | namespace interpreter { |
| 15 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 16 | class LoopBuilder; |
| 17 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 18 | class BytecodeGenerator final : public AstVisitor { |
| 19 | public: |
| 20 | BytecodeGenerator(Isolate* isolate, Zone* zone); |
| 21 | |
| 22 | Handle<BytecodeArray> MakeBytecode(CompilationInfo* info); |
| 23 | |
| 24 | #define DECLARE_VISIT(type) void Visit##type(type* node) override; |
| 25 | AST_NODE_LIST(DECLARE_VISIT) |
| 26 | #undef DECLARE_VISIT |
| 27 | |
| 28 | // Visiting function for declarations list and statements are overridden. |
| 29 | void VisitDeclarations(ZoneList<Declaration*>* declarations) override; |
| 30 | void VisitStatements(ZoneList<Statement*>* statments) override; |
| 31 | |
| 32 | private: |
| 33 | class ContextScope; |
| 34 | class ControlScope; |
| 35 | class ControlScopeForBreakable; |
| 36 | class ControlScopeForIteration; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 37 | class ControlScopeForTopLevel; |
| 38 | class ControlScopeForTryCatch; |
| 39 | class ControlScopeForTryFinally; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 40 | class ExpressionResultScope; |
| 41 | class EffectResultScope; |
| 42 | class AccumulatorResultScope; |
| 43 | class RegisterResultScope; |
| 44 | class RegisterAllocationScope; |
| 45 | |
| 46 | void MakeBytecodeBody(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 47 | |
| 48 | DEFINE_AST_VISITOR_SUBCLASS_MEMBERS(); |
| 49 | |
| 50 | // Dispatched from VisitBinaryOperation. |
| 51 | void VisitArithmeticExpression(BinaryOperation* binop); |
| 52 | void VisitCommaExpression(BinaryOperation* binop); |
| 53 | void VisitLogicalOrExpression(BinaryOperation* binop); |
| 54 | void VisitLogicalAndExpression(BinaryOperation* binop); |
| 55 | |
| 56 | // Dispatched from VisitUnaryOperation. |
| 57 | void VisitVoid(UnaryOperation* expr); |
| 58 | void VisitTypeOf(UnaryOperation* expr); |
| 59 | void VisitNot(UnaryOperation* expr); |
| 60 | void VisitDelete(UnaryOperation* expr); |
| 61 | |
| 62 | // Used by flow control routines to evaluate loop condition. |
| 63 | void VisitCondition(Expression* expr); |
| 64 | |
| 65 | // Helper visitors which perform common operations. |
| 66 | Register VisitArguments(ZoneList<Expression*>* arguments); |
| 67 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 68 | // Visit a keyed super property load. The optional |
| 69 | // |opt_receiver_out| register will have the receiver stored to it |
| 70 | // if it's a valid register. The loaded value is placed in the |
| 71 | // accumulator. |
| 72 | void VisitKeyedSuperPropertyLoad(Property* property, |
| 73 | Register opt_receiver_out); |
| 74 | |
| 75 | // Visit a named super property load. The optional |
| 76 | // |opt_receiver_out| register will have the receiver stored to it |
| 77 | // if it's a valid register. The loaded value is placed in the |
| 78 | // accumulator. |
| 79 | void VisitNamedSuperPropertyLoad(Property* property, |
| 80 | Register opt_receiver_out); |
| 81 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 82 | void VisitPropertyLoad(Register obj, Property* expr); |
| 83 | void VisitPropertyLoadForAccumulator(Register obj, Property* expr); |
| 84 | |
| 85 | void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot, |
| 86 | TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
| 87 | void VisitVariableLoadForAccumulatorValue( |
| 88 | Variable* variable, FeedbackVectorSlot slot, |
| 89 | TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
| 90 | MUST_USE_RESULT Register |
| 91 | VisitVariableLoadForRegisterValue(Variable* variable, FeedbackVectorSlot slot, |
| 92 | TypeofMode typeof_mode = NOT_INSIDE_TYPEOF); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 93 | void VisitVariableAssignment(Variable* variable, Token::Value op, |
| 94 | FeedbackVectorSlot slot); |
| 95 | |
| 96 | void BuildNamedSuperPropertyStore(Register receiver, Register home_object, |
| 97 | Register name, Register value); |
| 98 | void BuildKeyedSuperPropertyStore(Register receiver, Register home_object, |
| 99 | Register key, Register value); |
| 100 | void BuildNamedSuperPropertyLoad(Register receiver, Register home_object, |
| 101 | Register name); |
| 102 | void BuildKeyedSuperPropertyLoad(Register receiver, Register home_object, |
| 103 | Register key); |
| 104 | |
| 105 | void BuildThrowIfHole(Handle<String> name); |
| 106 | void BuildThrowIfNotHole(Handle<String> name); |
| 107 | void BuildThrowReassignConstant(Handle<String> name); |
| 108 | void BuildThrowReferenceError(Handle<String> name); |
| 109 | void BuildHoleCheckForVariableLoad(VariableMode mode, Handle<String> name); |
| 110 | void BuildHoleCheckForVariableAssignment(Variable* variable, Token::Value op); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 111 | |
| 112 | void VisitArgumentsObject(Variable* variable); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 113 | void VisitRestArgumentsArray(Variable* rest); |
| 114 | void VisitCallSuper(Call* call); |
| 115 | void VisitClassLiteralContents(ClassLiteral* expr); |
| 116 | void VisitClassLiteralForRuntimeDefinition(ClassLiteral* expr); |
| 117 | void VisitClassLiteralProperties(ClassLiteral* expr, Register literal, |
| 118 | Register prototype); |
| 119 | void VisitClassLiteralStaticPrototypeWithComputedName(Register name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 120 | void VisitThisFunctionVariable(Variable* variable); |
| 121 | void VisitNewTargetVariable(Variable* variable); |
| 122 | void VisitNewLocalFunctionContext(); |
| 123 | void VisitBuildLocalActivationContext(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 124 | void VisitBlockDeclarationsAndStatements(Block* stmt); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | void VisitNewLocalBlockContext(Scope* scope); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 126 | void VisitNewLocalCatchContext(Variable* variable); |
| 127 | void VisitNewLocalWithContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 128 | void VisitFunctionClosureForContext(); |
| 129 | void VisitSetHomeObject(Register value, Register home_object, |
| 130 | ObjectLiteralProperty* property, int slot_number = 0); |
| 131 | void VisitObjectLiteralAccessor(Register home_object, |
| 132 | ObjectLiteralProperty* property, |
| 133 | Register value_out); |
| 134 | void VisitForInAssignment(Expression* expr, FeedbackVectorSlot slot); |
| 135 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 136 | // Visit the body of a loop iteration. |
| 137 | void VisitIterationBody(IterationStatement* stmt, LoopBuilder* loop_builder); |
| 138 | |
| 139 | // Visit a statement and switch scopes, the context is in the accumulator. |
| 140 | void VisitInScope(Statement* stmt, Scope* scope); |
| 141 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 142 | // Visitors for obtaining expression result in the accumulator, in a |
| 143 | // register, or just getting the effect. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 144 | void VisitForAccumulatorValue(Expression* expr); |
| 145 | void VisitForAccumulatorValueOrTheHole(Expression* expr); |
| 146 | MUST_USE_RESULT Register VisitForRegisterValue(Expression* expr); |
| 147 | void VisitForRegisterValue(Expression* expr, Register destination); |
| 148 | void VisitForEffect(Expression* expr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 149 | |
| 150 | // Methods for tracking and remapping register. |
| 151 | void RecordStoreToRegister(Register reg); |
| 152 | Register LoadFromAliasedRegister(Register reg); |
| 153 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 154 | // Methods for tracking try-block nesting. |
| 155 | bool IsInsideTryCatch() const { return try_catch_nesting_level_ > 0; } |
| 156 | bool IsInsideTryFinally() const { return try_finally_nesting_level_ > 0; } |
| 157 | |
| 158 | // Initialize an array of temporary registers with consecutive registers. |
| 159 | template <size_t N> |
| 160 | void InitializeWithConsecutiveRegisters(Register (®isters)[N]); |
| 161 | |
| 162 | inline void set_builder(BytecodeArrayBuilder* builder) { builder_ = builder; } |
| 163 | inline BytecodeArrayBuilder* builder() const { return builder_; } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 164 | |
| 165 | inline Isolate* isolate() const { return isolate_; } |
| 166 | inline Zone* zone() const { return zone_; } |
| 167 | |
| 168 | inline Scope* scope() const { return scope_; } |
| 169 | inline void set_scope(Scope* scope) { scope_ = scope; } |
| 170 | inline CompilationInfo* info() const { return info_; } |
| 171 | inline void set_info(CompilationInfo* info) { info_ = info; } |
| 172 | |
| 173 | inline ControlScope* execution_control() const { return execution_control_; } |
| 174 | inline void set_execution_control(ControlScope* scope) { |
| 175 | execution_control_ = scope; |
| 176 | } |
| 177 | inline ContextScope* execution_context() const { return execution_context_; } |
| 178 | inline void set_execution_context(ContextScope* context) { |
| 179 | execution_context_ = context; |
| 180 | } |
| 181 | inline void set_execution_result(ExpressionResultScope* execution_result) { |
| 182 | execution_result_ = execution_result; |
| 183 | } |
| 184 | ExpressionResultScope* execution_result() const { return execution_result_; } |
| 185 | inline void set_register_allocator( |
| 186 | RegisterAllocationScope* register_allocator) { |
| 187 | register_allocator_ = register_allocator; |
| 188 | } |
| 189 | RegisterAllocationScope* register_allocator() const { |
| 190 | return register_allocator_; |
| 191 | } |
| 192 | |
| 193 | ZoneVector<Handle<Object>>* globals() { return &globals_; } |
| 194 | inline LanguageMode language_mode() const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 195 | int feedback_index(FeedbackVectorSlot slot) const; |
| 196 | |
| 197 | Isolate* isolate_; |
| 198 | Zone* zone_; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 199 | BytecodeArrayBuilder* builder_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 200 | CompilationInfo* info_; |
| 201 | Scope* scope_; |
| 202 | ZoneVector<Handle<Object>> globals_; |
| 203 | ControlScope* execution_control_; |
| 204 | ContextScope* execution_context_; |
| 205 | ExpressionResultScope* execution_result_; |
| 206 | RegisterAllocationScope* register_allocator_; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 207 | int try_catch_nesting_level_; |
| 208 | int try_finally_nesting_level_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 209 | }; |
| 210 | |
| 211 | } // namespace interpreter |
| 212 | } // namespace internal |
| 213 | } // namespace v8 |
| 214 | |
| 215 | #endif // V8_INTERPRETER_BYTECODE_GENERATOR_H_ |