[interpreter] Streamline bytecode array writing.

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 422 matching lines @@
 
   void* operator new(size_t size);
   void operator delete(void* p);
 
   int index_;
 };
 
 
 class Bytecodes {
  public:
+  //  The maximum number of operands a bytecode may have.
+  static const int kMaxOperands = 4;
+
   // Returns string representation of |bytecode|.
   static const char* ToString(Bytecode bytecode);
 
   // Returns string representation of |bytecode|.
   static std::string ToString(Bytecode bytecode, OperandScale operand_scale);
 
   // Returns string representation of |accumulator_use|.
   static const char* AccumulatorUseToString(AccumulatorUse accumulator_use);
 
   // Returns string representation of |operand_type|.
@@ skipping 67 matching lines @@
   static const OperandType* GetOperandTypes(Bytecode bytecode);
 
   // Returns a pointer to an array of operand type info terminated in
   // OperandTypeInfo::kNone.
   static const OperandTypeInfo* GetOperandTypeInfos(Bytecode bytecode);
 
   // Returns the size of the i-th operand of |bytecode|.
   static OperandSize GetOperandSize(Bytecode bytecode, int i,
                                     OperandScale operand_scale);
 
-  // Returns a pointer to an array of the operand sizes for |bytecode|.
-  static const OperandSize* GetOperandSizes(Bytecode bytecode,
-                                            OperandScale operand_scale);
-
   // Returns the offset of the i-th operand of |bytecode| relative to the start
   // of the bytecode.
   static int GetOperandOffset(Bytecode bytecode, int i,
                               OperandScale operand_scale);
 
-  // Returns a zero-based bitmap of the register operand positions of
-  // |bytecode|.
-  static int GetRegisterOperandBitmap(Bytecode bytecode);
-
   // Returns a debug break bytecode to replace |bytecode|.
   static Bytecode GetDebugBreak(Bytecode bytecode);
 
   // Returns the size of the bytecode including its operands for the
   // given |operand_scale|.
   static int Size(Bytecode bytecode, OperandScale operand_scale);
 
   // Returns the size of |operand|.
   static OperandSize SizeOfOperand(OperandType operand, OperandScale scale);
 
@@ skipping 122 matching lines @@
 std::ostream& operator<<(std::ostream& os, const AccumulatorUse& use);
 std::ostream& operator<<(std::ostream& os, const OperandScale& operand_scale);
 std::ostream& operator<<(std::ostream& os, const OperandSize& operand_size);
 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type);
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODES_H_