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

src/globals.h

Index: src/globals.h
===================================================================
--- src/globals.h	(revision 2034)
+++ src/globals.h	(working copy)
@@ -325,8 +325,6 @@
 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.
@@ -341,6 +339,12 @@
 };
 
 
+enum InlineCacheInLoop {
+  NOT_IN_LOOP,
+  IN_LOOP
+};
+
+
 // Type of properties.
 // Order of properties is significant.
 // Must fit in the BitField PropertyDetails::TypeField.