[stubs] Add LoadFixedArrayElements with int index

src/builtins/builtins-array.cc

Index: src/builtins/builtins-array.cc
diff --git a/src/builtins/builtins-array.cc b/src/builtins/builtins-array.cc
index 248bcadd673e60a5f22160bc0e9bbd3890f1410f..2432e14026a8f7f9645ed5c4a7eb2264051288dc 100644
--- a/src/builtins/builtins-array.cc
+++ b/src/builtins/builtins-array.cc
@@ -233,8 +233,7 @@ void Builtins::Generate_FastArrayPush(compiler::CodeAssemblerState* state) {
     // guaranteed to stay the first property.
     Node* descriptors = assembler.LoadMapDescriptors(map);
     Node* details = assembler.LoadFixedArrayElement(
-        descriptors,
-        assembler.Int32Constant(DescriptorArray::ToDetailsIndex(0)));
+        descriptors, DescriptorArray::ToDetailsIndex(0));
     mask = READ_ONLY << PropertyDetails::AttributesField::kShift;
     Node* mask_node = assembler.SmiConstant(mask);
     test = assembler.WordAnd(details, mask_node);