Array constructor expects AllocationSite or undefined as feedback.

src/arm/builtins-arm.cc

Index: src/arm/builtins-arm.cc
diff --git a/src/arm/builtins-arm.cc b/src/arm/builtins-arm.cc
index f53f293cef7d78ba377e722eb05f11c9aae691a4..f23cb442312af414d3e35cc9ba51c96010da8742 100644
--- a/src/arm/builtins-arm.cc
+++ b/src/arm/builtins-arm.cc
@@ -155,9 +155,7 @@ void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
 
   // Run the native code for the Array function called as a normal function.
   // tail call a stub
-  Handle<Object> megamorphic_sentinel =
-      TypeFeedbackInfo::MegamorphicSentinel(masm->isolate());
-  __ mov(r2, Operand(megamorphic_sentinel));
+  __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
   ArrayConstructorStub stub(masm->isolate());
   __ TailCallStub(&stub);
 }
@@ -737,9 +735,7 @@ static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
     __ mov(r0, Operand(r3));
     if (is_construct) {
       // No type feedback cell is available
-      Handle<Object> megamorphic_sentinel =
-          TypeFeedbackInfo::MegamorphicSentinel(masm->isolate());
-      __ mov(r2, Operand(megamorphic_sentinel));
+      __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
       CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
       __ CallStub(&stub);
     } else {