Polymorphism support for load IC.

src/objects.h

 // Copyright 2012 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 4234 matching lines @@
   enum StubType {
     NORMAL,
     FIELD,
     CONSTANT_FUNCTION,
     CALLBACKS,
     INTERCEPTOR,
     MAP_TRANSITION,
     NONEXISTENT
   };
 
+  enum IcFragment {
+    IC_FRAGMENT,
+    HANDLER_FRAGMENT
+  };
+
   enum {
     NUMBER_OF_KINDS = LAST_IC_KIND + 1
   };
 
   typedef int ExtraICState;
 
   static const ExtraICState kNoExtraICState = 0;
 
 #ifdef ENABLE_DISASSEMBLER
   // Printing
@@ skipping 162 matching lines @@
 
   // Get the safepoint entry for the given pc.
   SafepointEntry GetSafepointEntry(Address pc);
 
   // Mark this code object as not having a stack check table.  Assumes kind
   // is FUNCTION.
   void SetNoStackCheckTable();
 
   // Find the first map in an IC stub.
   Map* FindFirstMap();
+  void FindAllMaps(MapHandleList* maps);
+
+  // Find the first code in an IC stub.
+  Code* FindFirstCode();
+  void FindAllCode(CodeHandleList* code_list, int length);
 
   class ExtraICStateStrictMode: public BitField<StrictModeFlag, 0, 1> {};
   class ExtraICStateKeyedAccessGrowMode:
       public BitField<KeyedAccessGrowMode, 1, 1> {};  // NOLINT
 
   static const int kExtraICStateGrowModeShift = 1;
 
   static inline StrictModeFlag GetStrictMode(ExtraICState extra_ic_state) {
     return ExtraICStateStrictMode::decode(extra_ic_state);
   }
@@ skipping 4569 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_