Captured arguments object materialization

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index ba84c9a430cdb837e72947b021166d68f59164a4..cd4156468b0e754c76b5143e234a976d9c5863c3 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -706,21 +706,22 @@ static MaybeObject* ConstructArgumentsObjectForInlinedFunction(
     int inlined_frame_index) {
   Isolate* isolate = inlined_function->GetIsolate();
   Factory* factory = isolate->factory();
-  Vector<SlotRef> args_slots =
-      SlotRef::ComputeSlotMappingForArguments(
-          frame,
-          inlined_frame_index,
-          inlined_function->shared()->formal_parameter_count());
-  int args_count = args_slots.length();
+  SlotRefValueBuilder slot_refs(
+      frame,
+      inlined_frame_index,
+      inlined_function->shared()->formal_parameter_count());
+
+  int args_count = slot_refs.args_length();
   Handle<JSObject> arguments =
       factory->NewArgumentsObject(inlined_function, args_count);
   Handle<FixedArray> array = factory->NewFixedArray(args_count);
+  slot_refs.Prepare(isolate);
   for (int i = 0; i < args_count; ++i) {
-    Handle<Object> value = args_slots[i].GetValue(isolate);
+    Handle<Object> value = slot_refs.GetNext(isolate, 0);
     array->set(i, *value);
   }
+  slot_refs.Finish(isolate);
   arguments->set_elements(*array);
-  args_slots.Dispose();
 
   // Return the freshly allocated arguments object.
   return *arguments;