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

src/builtins.cc

 // 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 647 matching lines @@
   };
 
 #define DEF_FUNCTION_PTR_C(name)         \
     { FUNCTION_ADDR(Generate_Adaptor),   \
       FUNCTION_ADDR(Builtin_##name),     \
       #name,                             \
       c_##name,                          \
       Code::ComputeFlags(Code::BUILTIN)  \
     },
 
-#define DEF_FUNCTION_PTR_A(name, kind, state) \
-    { FUNCTION_ADDR(Generate_##name),         \
-      NULL,                                   \
-      #name,                                  \
-      name,                                   \
-      Code::ComputeFlags(Code::kind, state)   \
+#define DEF_FUNCTION_PTR_A(name, kind, state)              \
+    { FUNCTION_ADDR(Generate_##name),                      \
+      NULL,                                                \
+      #name,                                               \
+      name,                                                \
+      Code::ComputeFlags(Code::kind, NOT_IN_LOOP, state)   \
     },
 
   // Define array of pointers to generators and C builtin functions.
   static BuiltinDesc functions[] = {
       BUILTIN_LIST_C(DEF_FUNCTION_PTR_C)
       BUILTIN_LIST_A(DEF_FUNCTION_PTR_A)
       BUILTIN_LIST_DEBUG_A(DEF_FUNCTION_PTR_A)
       // Terminator:
       { NULL, NULL, NULL, builtin_count, static_cast<Code::Flags>(0) }
   };
@@ skipping 73 matching lines @@
       if (entry->contains(pc)) {
         return names_[i];
       }
     }
   }
   return NULL;
 }
 
 
 } }  // namespace v8::internal