[Interpreter] Introduce IncStub and DecStub.

src/interpreter/interpreter.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_INTERPRETER_H_
 #define V8_INTERPRETER_INTERPRETER_H_
 
 // Clients of this interface shouldn't depend on lots of interpreter internals.
 // Do not include anything from src/interpreter other than
 // src/interpreter/bytecodes.h here!
@@ skipping 55 matching lines @@
   BYTECODE_LIST(DECLARE_BYTECODE_HANDLER_GENERATOR)
 #undef DECLARE_BYTECODE_HANDLER_GENERATOR
 
   // Generates code to perform the binary operations via |callable|.
   void DoBinaryOp(Callable callable, InterpreterAssembler* assembler);
 
   // Generates code to perform the binary operations via |function_id|.
   void DoBinaryOp(Runtime::FunctionId function_id,
                   InterpreterAssembler* assembler);
 
-  // Generates code to perform the count operations via |function_id|.
-  void DoCountOp(Runtime::FunctionId function_id,
-                 InterpreterAssembler* assembler);
+  // Generates code to perform the count operations via |callable|.
+  void DoCountOp(Callable callable, InterpreterAssembler* assembler);
 
   // Generates code to perform the comparison operation associated with
   // |compare_op|.
   void DoCompareOp(Token::Value compare_op, InterpreterAssembler* assembler);
 
   // Generates code to load a constant from the constant pool.
   void DoLoadConstant(InterpreterAssembler* assembler);
 
   // Generates code to perform a global load via |ic|.
   void DoLoadGlobal(Callable ic, InterpreterAssembler* assembler);
@@ skipping 24 matching lines @@
 
   // Generates code to perform a JS runtime call.
   void DoCallJSRuntimeCommon(InterpreterAssembler* assembler);
 
   // Generates code to perform a constructor call.
   void DoCallConstruct(InterpreterAssembler* assembler);
 
   // Generates code to perform a type conversion.
   void DoTypeConversionOp(Callable callable, InterpreterAssembler* assembler);
 
-  // Generates code ro create a literal via |function_id|.
+  // Generates code to create a literal via |function_id|.
   void DoCreateLiteral(Runtime::FunctionId function_id,
                        InterpreterAssembler* assembler);
 
   // Generates code to perform delete via function_id.
   void DoDelete(Runtime::FunctionId function_id,
                 InterpreterAssembler* assembler);
 
   // Generates code to perform a lookup slot load via |function_id|.
   void DoLoadLookupSlot(Runtime::FunctionId function_id,
                         InterpreterAssembler* assembler);
@@ skipping 16 matching lines @@
   v8::base::SmartArrayPointer<uintptr_t> bytecode_dispatch_count_table_;
 
   DISALLOW_COPY_AND_ASSIGN(Interpreter);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_INTERPRETER_H_