The Array function must be looked up in the native context.

src/ia32/code-stubs-ia32.cc

 // 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 2334 matching lines @@
 
   // If we came here, we need to see if we are the array function.
   // If we didn't have a matching function, and we didn't find the megamorph
   // sentinel, then we have in the slot either some other function or an
   // AllocationSite. Do a map check on the object in ecx.
   Handle<Map> allocation_site_map =
       masm->isolate()->factory()->allocation_site_map();
   __ cmp(FieldOperand(ecx, 0), Immediate(allocation_site_map));
   __ j(not_equal, &miss);
 
-  // Load the global or builtins object from the current context
-  __ LoadGlobalContext(ecx);
   // Make sure the function is the Array() function
-  __ cmp(edi, Operand(ecx,
-                      Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+  __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx);
+  __ cmp(edi, ecx);
   __ j(not_equal, &megamorphic);
   __ jmp(&done, Label::kFar);
 
   __ bind(&miss);
 
   // A monomorphic miss (i.e, here the cache is not uninitialized) goes
   // megamorphic.
   __ cmp(ecx, Immediate(TypeFeedbackInfo::UninitializedSentinel(isolate)));
   __ j(equal, &initialize);
   // MegamorphicSentinel is an immortal immovable object (undefined) so no
   // write-barrier is needed.
   __ bind(&megamorphic);
   __ mov(FieldOperand(ebx, edx, times_half_pointer_size,
                       FixedArray::kHeaderSize),
          Immediate(TypeFeedbackInfo::MegamorphicSentinel(isolate)));
   __ jmp(&done, Label::kFar);
 
   // An uninitialized cache is patched with the function or sentinel to
   // indicate the ElementsKind if function is the Array constructor.
   __ bind(&initialize);
-  __ LoadGlobalContext(ecx);
   // Make sure the function is the Array() function
-  __ cmp(edi, Operand(ecx,
-                      Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+  __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx);
+  __ cmp(edi, ecx);
   __ j(not_equal, &not_array_function);
 
   // The target function is the Array constructor,
   // Create an AllocationSite if we don't already have it, store it in the slot.
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
 
     // Arguments register must be smi-tagged to call out.
     __ SmiTag(eax);
     __ push(eax);
@@ skipping 3064 matching lines @@
                               Operand(ebp, 7 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32