This patch much improves our tracking of whether function is...

src/ic.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 102 matching lines @@
   Address OriginalCodeAddress();
 #endif
 
   // Set the call-site target.
   void set_target(Code* code) { SetTargetAtAddress(address(), code); }
 
 #ifdef DEBUG
   static void TraceIC(const char* type,
                       Handle<String> name,
                       State old_state,
-                      Code* new_target);
+                      Code* new_target,
+                      const char* updated_from = "");

[Kasper Lund, 2009/05/25 09:45:42]

updated_from -> extra_info?

 #endif
 
   static Failure* TypeError(const char* type,
                             Handle<Object> object,
                             Handle<String> name);
   static Failure* ReferenceError(const char* type, Handle<String> name);
 
   // Access the target code for the given IC address.
   static inline Code* GetTargetAtAddress(Address address);
   static inline void SetTargetAtAddress(Address address, Code* target);
@@ skipping 242 matching lines @@
   }
 
   static void Clear(Address address, Code* target);
   friend class IC;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_