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

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 5988b7d2a69ba058fac9abbed05ee5b943be0252..95f17247a975896330620d443d7069d154018194 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -4547,15 +4547,6 @@ void MacroAssembler::LoadGlobalFunction(int index, Register function) {
 }
 
 
-void MacroAssembler::LoadArrayFunction(Register function) {
-  movp(function,
-       Operand(rsi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
-  movp(function, FieldOperand(function, GlobalObject::kGlobalContextOffset));
-  movp(function,
-       Operand(function, Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
-}
-
-
 void MacroAssembler::LoadGlobalFunctionInitialMap(Register function,
                                                   Register map) {
   // Load the initial map.  The global functions all have initial maps.