Copy-on-write arrays.

src/arm/stub-cache-arm.cc

 // Copyright 2006-2009 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 1279 matching lines @@
   const int argc = arguments().immediate();
   __ ldr(r1, MemOperand(sp, argc * kPointerSize));
 
   // Check that the receiver isn't a smi.
   __ tst(r1, Operand(kSmiTagMask));
   __ b(eq, &miss);
 
   // Check that the maps haven't changed.
   CheckPrototypes(JSObject::cast(object), r1, holder, r3, r0, r4, name, &miss);
 
-  if (object->IsGlobalObject()) {
-    __ ldr(r3, FieldMemOperand(r1, GlobalObject::kGlobalReceiverOffset));
-    __ str(r3, MemOperand(sp, argc * kPointerSize));
-  }
-
   __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush),
                                argc + 1,
                                1);
 
   // Handle call cache miss.
   __ bind(&miss);
   Object* obj = GenerateMissBranch();
   if (obj->IsFailure()) return obj;
 
   // Return the generated code.
@@ skipping 27 matching lines @@
   const int argc = arguments().immediate();
   __ ldr(r1, MemOperand(sp, argc * kPointerSize));
 
   // Check that the receiver isn't a smi.
   __ tst(r1, Operand(kSmiTagMask));
   __ b(eq, &miss);
 
   // Check that the maps haven't changed.
   CheckPrototypes(JSObject::cast(object), r1, holder, r3, r0, r4, name, &miss);
 
-  if (object->IsGlobalObject()) {
-    __ ldr(r3, FieldMemOperand(r1, GlobalObject::kGlobalReceiverOffset));
-    __ str(r3, MemOperand(sp, argc * kPointerSize));
-  }
-
   __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPop),
                                argc + 1,
                                1);
 
   // Handle call cache miss.
   __ bind(&miss);
   Object* obj = GenerateMissBranch();
   if (obj->IsFailure()) return obj;
 
   // Return the generated code.
@@ skipping 987 matching lines @@
   // Return the generated code.
   return GetCode();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM