Rewrite of VisitCountOperation that should speed it up

src/builtins.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 87 matching lines @@
 // Define list of builtins implemented in JavaScript.
 #define BUILTINS_LIST_JS(V)    \
   V(EQUALS, 1)                 \
   V(STRICT_EQUALS, 1)          \
   V(COMPARE, 2)                \
   V(ADD, 1)                    \
   V(SUB, 1)                    \
   V(MUL, 1)                    \
   V(DIV, 1)                    \
   V(MOD, 1)                    \
-  V(INC, 0)                    \
-  V(DEC, 0)                    \
   V(BIT_OR, 1)                 \
   V(BIT_AND, 1)                \
   V(BIT_XOR, 1)                \
   V(UNARY_MINUS, 0)            \
   V(BIT_NOT, 0)                \
   V(SHL, 1)                    \
   V(SAR, 1)                    \
   V(SHR, 1)                    \
   V(DELETE, 1)                 \
   V(IN, 1)                     \
@@ skipping 90 matching lines @@
   static void Generate_JSConstructEntryTrampoline(MacroAssembler* masm);
   static void Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm);
 
   static void Generate_FunctionCall(MacroAssembler* masm);
   static void Generate_FunctionApply(MacroAssembler* masm);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_BUILTINS_H_