Optimize %ClassOf() on IA-32 and use it instead of the...

src/runtime.h

 // Copyright 2006-2008 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 155 matching lines @@
   F(FunctionSetPrototype, 2) \
   F(FunctionGetName, 1) \
   F(FunctionSetName, 2) \
   F(FunctionGetSourceCode, 1) \
   F(FunctionGetScript, 1) \
   F(FunctionGetScriptSourcePosition, 1) \
   F(FunctionIsAPIFunction, 1) \
   F(GetScript, 1) \
   \
   F(ClassOf, 1) \
-  F(HasDateClass, 1) \
-  F(HasStringClass, 1) \
-  F(HasArrayClass, 1) \
-  F(HasFunctionClass, 1) \
-  F(HasNumberClass, 1) \
-  F(HasBooleanClass, 1) \
-  F(HasArgumentsClass, 1) \
-  F(HasRegExpClass, 1) \
   F(SetCode, 2) \
   \
   F(CreateApiFunction, 1) \
   F(IsTemplate, 1) \
   F(GetTemplateField, 2) \
   F(DisableAccessChecks, 1) \
   F(EnableAccessChecks, 1) \
   \
   /* Dates */ \
   F(DateCurrentTime, 0) \
@@ skipping 205 matching lines @@
                                                 int position);
 
   // Helper functions used stubs.
   static void PerformGC(Object* result);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_