Swap bitfield3 and backpointer.

src/ia32/macro-assembler-ia32.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 484 matching lines @@
 
   // Abort execution if argument is not a number. Used in debug code.
   void AbortIfNotNumber(Register object);
 
   // Abort execution if argument is not a smi. Used in debug code.
   void AbortIfNotSmi(Register object);
 
   // Abort execution if argument is a smi. Used in debug code.
   void AbortIfSmi(Register object);
 
+  // Abort execution if argument is not a fixed array. Used in debug code.
+  void AbortIfNotFixedArray(Register object);
+
   // Abort execution if argument is a string. Used in debug code.
   void AbortIfNotString(Register object);
 
   // ---------------------------------------------------------------------------
   // Exception handling
 
   // Push a new try handler and link it into try handler chain.
   void PushTryHandler(StackHandler::Kind kind, int handler_index);
 
   // Unlink the stack handler on top of the stack from the try handler chain.
@@ skipping 472 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_