Better support for 'polymorphic' JS and external arrays

src/objects.h

 // Copyright 2011 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 3252 matching lines @@
     FLAGS_MAX_VALUE = kMaxInt
   };
 
   enum Kind {
     FUNCTION,
     OPTIMIZED_FUNCTION,
     STUB,
     BUILTIN,
     LOAD_IC,
     KEYED_LOAD_IC,
-    KEYED_EXTERNAL_ARRAY_LOAD_IC,
     CALL_IC,
     KEYED_CALL_IC,
     STORE_IC,
     KEYED_STORE_IC,
-    KEYED_EXTERNAL_ARRAY_STORE_IC,
     TYPE_RECORDING_BINARY_OP_IC,
     COMPARE_IC,
     // No more than 16 kinds. The value currently encoded in four bits in
     // Flags.
 
     // Pseudo-kinds.
     REGEXP = BUILTIN,
     FIRST_IC_KIND = LOAD_IC,
     LAST_IC_KIND = COMPARE_IC
   };
@@ skipping 52 matching lines @@
   inline bool is_load_stub() { return kind() == LOAD_IC; }
   inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; }
   inline bool is_store_stub() { return kind() == STORE_IC; }
   inline bool is_keyed_store_stub() { return kind() == KEYED_STORE_IC; }
   inline bool is_call_stub() { return kind() == CALL_IC; }
   inline bool is_keyed_call_stub() { return kind() == KEYED_CALL_IC; }
   inline bool is_type_recording_binary_op_stub() {
     return kind() == TYPE_RECORDING_BINARY_OP_IC;
   }
   inline bool is_compare_ic_stub() { return kind() == COMPARE_IC; }
-  inline bool is_external_array_load_stub() {
-    return kind() == KEYED_EXTERNAL_ARRAY_LOAD_IC;
-  }
-  inline bool is_external_array_store_stub() {
-    return kind() == KEYED_EXTERNAL_ARRAY_STORE_IC;
-  }
 
   // [major_key]: For kind STUB or BINARY_OP_IC, the major key.
   inline int major_key();
   inline void set_major_key(int value);
 
   // [optimizable]: For FUNCTION kind, tells if it is optimizable.
   inline bool optimizable();
   inline void set_optimizable(bool value);
 
   // [has_deoptimization_support]: For FUNCTION kind, tells if it has
@@ skipping 48 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();
 
+  // Return the number of maps
+  int GetMapCount();
+
   // Flags operations.
   static inline Flags ComputeFlags(
       Kind kind,
       InLoopFlag in_loop = NOT_IN_LOOP,
       InlineCacheState ic_state = UNINITIALIZED,
       ExtraICState extra_ic_state = kNoExtraICState,
       PropertyType type = NORMAL,
       int argc = -1,
       InlineCacheHolderFlag holder = OWN_MAP);
 
@@ skipping 3270 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_