Bring a fix for v8 bug 589 and Chromium bug 27967 to 1.3....

src/arm/ic-arm.cc

 // 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 548 matching lines @@
   // Check that the key is a smi.
   __ tst(r0, Operand(kSmiTagMask));
   __ b(ne, &slow);
   __ mov(r0, Operand(r0, ASR, kSmiTagSize));
   // Check that the object isn't a smi.
   __ tst(r1, Operand(kSmiTagMask));
   __ b(eq, &slow);
 
   // Get the map of the receiver.
   __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset));
-  // Check that the receiver does not require access checks.  We need
-  // to check this explicitly since this generic stub does not perform
-  // map checks.
+
+  // Check bit field.
   __ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset));
-  __ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded));
+  __ tst(r3, Operand(kSlowCaseBitFieldMask));
   __ b(ne, &slow);
   // Check that the object is some kind of JS object EXCEPT JS Value type.
   // In the case that the object is a value-wrapper object,
   // we enter the runtime system to make sure that indexing into string
   // objects work as intended.
   ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE);
   __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset));
   __ cmp(r2, Operand(JS_OBJECT_TYPE));
   __ b(lt, &slow);
 
@@ skipping 245 matching lines @@
 
   // Perform tail call to the entry.
   __ TailCallRuntime(f, 3, 1);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal