Simplify UnaryOpStub a little bit.

src/x64/code-stubs-x64.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 43 matching lines @@
 
   Major MajorKey() { return TranscendentalCache; }
   int MinorKey() { return type_ | argument_type_; }
   Runtime::FunctionId RuntimeFunction();
   void GenerateOperation(MacroAssembler* masm);
 };
 
 
 class UnaryOpStub: public CodeStub {
  public:
-  UnaryOpStub(Token::Value op, UnaryOverwriteMode mode)
+  UnaryOpStub(Token::Value op,
+              UnaryOverwriteMode mode,
+              UnaryOpIC::TypeInfo operand_type = UnaryOpIC::UNINITIALIZED)
       : op_(op),
         mode_(mode),
-        operand_type_(UnaryOpIC::UNINITIALIZED),
-        name_(NULL) {
-  }
-
-  UnaryOpStub(
-      int key,
-      UnaryOpIC::TypeInfo operand_type)
-      : op_(OpBits::decode(key)),
-        mode_(ModeBits::decode(key)),
         operand_type_(operand_type),
         name_(NULL) {
   }
 
  private:
   Token::Value op_;
   UnaryOverwriteMode mode_;
 
   // Operand type information determined at runtime.
   UnaryOpIC::TypeInfo operand_type_;
 
   char* name_;
 
   const char* GetName();
 
 #ifdef DEBUG
   void Print() {
-    PrintF("UnaryOpStub %d (op %s), "
-           "(mode %d, runtime_type_info %s)\n",
+    PrintF("UnaryOpStub %d (op %s), (mode %d, runtime_type_info %s)\n",
            MinorKey(),
            Token::String(op_),
            static_cast<int>(mode_),
            UnaryOpIC::GetName(operand_type_));
   }
 #endif
 
   class ModeBits: public BitField<UnaryOverwriteMode, 0, 1> {};
   class OpBits: public BitField<Token::Value, 1, 7> {};
   class OperandTypeInfoBits: public BitField<UnaryOpIC::TypeInfo, 8, 3> {};
@@ skipping 388 matching lines @@
   Register dictionary_;
   Register result_;
   Register index_;
   LookupMode mode_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODE_STUBS_X64_H_