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

src/globals.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 307 matching lines @@
 
 // Callback function on inline caches, used for iterating over inline caches
 // in compiled code.
 typedef void (*InlineCacheCallback)(Code* code, Address ic);
 
 
 // State for inline cache call sites. Aliased as IC::State.
 enum InlineCacheState {
   // Has never been executed.
   UNINITIALIZED,
-  // Has never been executed, but is in a loop.
-  UNINITIALIZED_IN_LOOP,
   // Has been executed but monomorhic state has been delayed.
   PREMONOMORPHIC,
   // Has been executed and only one receiver type has been seen.
   MONOMORPHIC,
   // Like MONOMORPHIC but check failed due to prototype.
   MONOMORPHIC_PROTOTYPE_FAILURE,
   // Multiple receiver types have been seen.
   MEGAMORPHIC,
   // Special states for debug break or step in prepare stubs.
   DEBUG_BREAK,
   DEBUG_PREPARE_STEP_IN
 };
 
 
+enum InlineCacheInLoop {
+  NOT_IN_LOOP,
+  IN_LOOP
+};
+
+
 // Type of properties.
 // Order of properties is significant.
 // Must fit in the BitField PropertyDetails::TypeField.
 // A copy of this is in mirror-delay.js.
 enum PropertyType {
   NORMAL              = 0,  // only in slow mode
   FIELD               = 1,  // only in fast mode
   CONSTANT_FUNCTION   = 2,  // only in fast mode
   CALLBACKS           = 3,
   INTERCEPTOR         = 4,  // only in lookup results, not in descriptors.
@@ skipping 195 matching lines @@
 
   Dest dest;
   memcpy(&dest, &source, sizeof(dest));
   return dest;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_GLOBALS_H_