[Interpreter] Add support for local context loads and stores.

src/interpreter/bytecodes.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_BYTECODES_H_
 #define V8_INTERPRETER_BYTECODES_H_
 
 #include <iosfwd>
 
 // Clients of this interface shouldn't depend on lots of interpreter internals.
@@ skipping 30 matching lines @@
   V(LdaNull, OperandType::kNone)                                               \
   V(LdaTheHole, OperandType::kNone)                                            \
   V(LdaTrue, OperandType::kNone)                                               \
   V(LdaFalse, OperandType::kNone)                                              \
                                                                                \
   /* Globals */                                                                \
   V(LdaGlobal, OperandType::kIdx8)                                             \
   V(StaGlobal, OperandType::kIdx8)                                             \
                                                                                \
   /* Context operations */                                                     \
+  V(PushContext, OperandType::kReg8)                                           \
+  V(PopContext, OperandType::kReg8)                                            \
   V(LdaContextSlot, OperandType::kReg8, OperandType::kIdx8)                    \
+  V(StaContextSlot, OperandType::kReg8, OperandType::kIdx8)                    \
                                                                                \
   /* Register-accumulator transfers */                                         \
   V(Ldar, OperandType::kReg8)                                                  \
   V(Star, OperandType::kReg8)                                                  \
                                                                                \
   /* LoadIC operations */                                                      \
   V(LoadICSloppy, OperandType::kReg8, OperandType::kIdx8)                      \
   V(LoadICStrict, OperandType::kReg8, OperandType::kIdx8)                      \
   V(KeyedLoadICSloppy, OperandType::kReg8, OperandType::kIdx8)                 \
   V(KeyedLoadICStrict, OperandType::kReg8, OperandType::kIdx8)                 \
                                                                                \
   /* StoreIC operations */                                                     \
   V(StoreICSloppy, OperandType::kReg8, OperandType::kReg8, OperandType::kIdx8) \
   V(StoreICStrict, OperandType::kReg8, OperandType::kReg8, OperandType::kIdx8) \
   V(KeyedStoreICSloppy, OperandType::kReg8, OperandType::kReg8,                \
     OperandType::kIdx8)                                                        \
   V(KeyedStoreICStrict, OperandType::kReg8, OperandType::kReg8,                \
     OperandType::kIdx8)                                                        \
                                                                                \
-  /* Context operations */                                                     \
-  V(PushContext, OperandType::kReg8)                                           \
-  V(PopContext, OperandType::kReg8)                                            \
-                                                                               \
   /* Binary Operators */                                                       \
   V(Add, OperandType::kReg8)                                                   \
   V(Sub, OperandType::kReg8)                                                   \
   V(Mul, OperandType::kReg8)                                                   \
   V(Div, OperandType::kReg8)                                                   \
   V(Mod, OperandType::kReg8)                                                   \
   V(BitwiseOr, OperandType::kReg8)                                             \
   V(BitwiseXor, OperandType::kReg8)                                            \
   V(BitwiseAnd, OperandType::kReg8)                                            \
   V(ShiftLeft, OperandType::kReg8)                                             \
@@ skipping 114 matching lines @@
   bool is_function_context() const;
 
   static Register FromOperand(uint8_t operand);
   uint8_t ToOperand() const;
 
   static bool AreContiguous(Register reg1, Register reg2,
                             Register reg3 = Register(),
                             Register reg4 = Register(),
                             Register reg5 = Register());
 
+  bool operator==(const Register& o) const { return o.index() == index(); }
+  bool operator!=(const Register& o) const { return o.index() != index(); }
+
  private:
   static const int kIllegalIndex = kMaxInt;
 
   void* operator new(size_t size);
   void operator delete(void* p);
 
   int index_;
 };
 
 
@@ skipping 57 matching lines @@
 
 std::ostream& operator<<(std::ostream& os, const Bytecode& bytecode);
 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type);
 std::ostream& operator<<(std::ostream& os, const OperandSize& operand_type);
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODES_H_