[Interpreter] Implement ForIn in bytecode graph builder.

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 181 matching lines @@
   V(JumpIfToBooleanTrue, OperandType::kImm8)                                   \
   V(JumpIfToBooleanTrueConstant, OperandType::kIdx8)                           \
   V(JumpIfToBooleanFalse, OperandType::kImm8)                                  \
   V(JumpIfToBooleanFalseConstant, OperandType::kIdx8)                          \
   V(JumpIfNull, OperandType::kImm8)                                            \
   V(JumpIfNullConstant, OperandType::kIdx8)                                    \
   V(JumpIfUndefined, OperandType::kImm8)                                       \
   V(JumpIfUndefinedConstant, OperandType::kIdx8)                               \
                                                                                \
   /* Complex flow control For..in */                                           \
-  V(ForInPrepare, OperandType::kReg8)                                          \
-  V(ForInNext, OperandType::kReg8, OperandType::kReg8)                         \
-  V(ForInDone, OperandType::kReg8)                                             \
+  V(ForInPrepare, OperandType::kReg8, OperandType::kReg8, OperandType::kReg8,  \
+    OperandType::kReg8)                                                        \
+  V(ForInNext, OperandType::kReg8, OperandType::kReg8, OperandType::kReg8,     \
+    OperandType::kReg8)                                                        \
+  V(ForInDone, OperandType::kReg8, OperandType::kReg8)                         \
+  V(ForInStep, OperandType::kReg8)                                             \
                                                                                \
   /* Non-local flow control */                                                 \
   V(Throw, OperandType::kNone)                                                 \
   V(Return, OperandType::kNone)
 
 
 // Enumeration of the size classes of operand types used by bytecodes.
 enum class OperandSize : uint8_t {
   kNone = 0,
   kByte = 1,
@@ skipping 168 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_