[Interpreter] Add support for Load / Store to Lookup slots.

src/interpreter/bytecode-array-builder.h

 // 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_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include <vector>
 
 #include "src/ast/ast.h"
@@ skipping 99 matching lines @@
                                           LanguageMode language_mode);
 
   // Store properties. The value to be stored should be in the accumulator.
   BytecodeArrayBuilder& StoreNamedProperty(Register object, size_t name_index,
                                            int feedback_slot,
                                            LanguageMode language_mode);
   BytecodeArrayBuilder& StoreKeyedProperty(Register object, Register key,
                                            int feedback_slot,
                                            LanguageMode language_mode);
 
+  // Lookup the variable with |name|.
+  BytecodeArrayBuilder& LoadLookupSlot(const Handle<String> name,
+                                       Register context,
+                                       TypeofMode typeof_mode);
+
+  // Store value in the accumulator into the variable with |name|.
+  BytecodeArrayBuilder& StoreLookupSlot(const Handle<String> name,
+                                        Register context,
+                                        LanguageMode language_mode);
+
   // Create a new closure for the SharedFunctionInfo.
   BytecodeArrayBuilder& CreateClosure(Handle<SharedFunctionInfo> shared_info,
                                       PretenureFlag tenured);
 
   // Create a new arguments object in the accumulator.
   BytecodeArrayBuilder& CreateArguments(CreateArgumentsType type);
 
   // Literals creation.  Constant elements should be in the accumulator.
   BytecodeArrayBuilder& CreateRegExpLiteral(Handle<String> pattern,
                                             int literal_index, int flags);
@@ skipping 89 matching lines @@
   static Bytecode BytecodeForCountOperation(Token::Value op);
   static Bytecode BytecodeForCompareOperation(Token::Value op);
   static Bytecode BytecodeForWideOperands(Bytecode bytecode);
   static Bytecode BytecodeForLoadIC(LanguageMode language_mode);
   static Bytecode BytecodeForKeyedLoadIC(LanguageMode language_mode);
   static Bytecode BytecodeForStoreIC(LanguageMode language_mode);
   static Bytecode BytecodeForKeyedStoreIC(LanguageMode language_mode);
   static Bytecode BytecodeForLoadGlobal(LanguageMode language_mode,
                                         TypeofMode typeof_mode);
   static Bytecode BytecodeForStoreGlobal(LanguageMode language_mode);
+  static Bytecode BytecodeForStoreLookupSlot(LanguageMode language_mode);
   static Bytecode BytecodeForCreateArguments(CreateArgumentsType type);
   static Bytecode BytecodeForDelete(LanguageMode language_mode);
 
   static bool FitsInIdx8Operand(int value);
   static bool FitsInIdx8Operand(size_t value);
   static bool FitsInImm8Operand(int value);
   static bool FitsInIdx16Operand(int value);
   static bool FitsInIdx16Operand(size_t value);
 
   static Bytecode GetJumpWithConstantOperand(Bytecode jump_with_smi8_operand);
@@ skipping 123 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TemporaryRegisterScope);
 };
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_