[Interpreter] Add support for for..in.

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 123 matching lines @@
   V(JumpConstant, OperandType::kIdx8)                                          \
   V(JumpIfTrue, OperandType::kImm8)                                            \
   V(JumpIfTrueConstant, OperandType::kIdx8)                                    \
   V(JumpIfFalse, OperandType::kImm8)                                           \
   V(JumpIfFalseConstant, OperandType::kIdx8)                                   \
   V(JumpIfToBooleanTrue, OperandType::kImm8)                                   \
   V(JumpIfToBooleanTrueConstant, OperandType::kIdx8)                           \
   V(JumpIfToBooleanFalse, OperandType::kImm8)                                  \
   V(JumpIfToBooleanFalseConstant, OperandType::kIdx8)                          \
   V(Throw, OperandType::kNone)                                                 \
-  V(Return, OperandType::kNone)
+  V(Return, OperandType::kNone)                                                \
+                                                                               \
+  /* For..in */                                                                \

[rmcilroy, 2015/10/26 14:04:01]

nit - move Throw and Return below these

[oth, 2015/10/28 11:53:12]

Done.

+  V(ForInPrepare, OperandType::kNone)                                          \
+  V(ForInNext, OperandType::kReg8)                                             \
+  V(ForInDone, OperandType::kReg8)
 
 
 // Enumeration of the size classes of operand types used by bytecodes.
 enum class OperandSize : uint8_t {
   kNone = 0,
   kByte = 1,
   kShort = 2,
 };
 
 
@@ skipping 147 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_