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

src/x64/code-stubs-x64.cc

 // Copyright 2013 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 2176 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 rcx.
   Handle<Map> allocation_site_map =
       masm->isolate()->factory()->allocation_site_map();
   __ Cmp(FieldOperand(rcx, 0), allocation_site_map);
   __ j(not_equal, &miss);
 
   // Make sure the function is the Array() function
-  __ LoadArrayFunction(rcx);
+  __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, rcx);
   __ cmpq(rdi, rcx);
   __ j(not_equal, &megamorphic);
   __ jmp(&done);
 
   __ bind(&miss);
 
   // A monomorphic miss (i.e, here the cache is not uninitialized) goes
   // megamorphic.
   __ Cmp(rcx, TypeFeedbackInfo::UninitializedSentinel(isolate));
   __ j(equal, &initialize);
   // MegamorphicSentinel is an immortal immovable object (undefined) so no
   // write-barrier is needed.
   __ bind(&megamorphic);
   __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize),
           TypeFeedbackInfo::MegamorphicSentinel(isolate));
   __ jmp(&done);
 
   // An uninitialized cache is patched with the function or sentinel to
   // indicate the ElementsKind if function is the Array constructor.
   __ bind(&initialize);
   // Make sure the function is the Array() function
-  __ LoadArrayFunction(rcx);
+  __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, rcx);
   __ cmpq(rdi, rcx);
   __ 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.
     __ Integer32ToSmi(rax, rax);
@@ skipping 3099 matching lines @@
                               return_value_operand,
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64