Distinguish slow from fast sloppy arguments

src/runtime/runtime-array.cc

Index: src/runtime/runtime-array.cc
diff --git a/src/runtime/runtime-array.cc b/src/runtime/runtime-array.cc
index 1617245daf3206fce4638c57e388f88c226f7f8a..273a3fac1e3c8f17494eafba4227c6a1d6cf626f 100644
--- a/src/runtime/runtime-array.cc
+++ b/src/runtime/runtime-array.cc
@@ -295,7 +295,8 @@ static uint32_t EstimateElementCount(Handle<JSArray> array) {
       }
       break;
     }
-    case SLOPPY_ARGUMENTS_ELEMENTS:
+    case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
+    case SLOW_SLOPPY_ARGUMENTS_ELEMENTS:
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
   case EXTERNAL_##TYPE##_ELEMENTS:                      \
   case TYPE##_ELEMENTS:
@@ -436,7 +437,8 @@ static void CollectElementIndices(Handle<JSObject> object, uint32_t range,
         if (length == range) return;  // All indices accounted for already.
         break;
       }
-    case SLOPPY_ARGUMENTS_ELEMENTS: {
+    case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
+    case SLOW_SLOPPY_ARGUMENTS_ELEMENTS: {
       MaybeHandle<Object> length_obj =
           Object::GetProperty(object, isolate->factory()->length_string());
       double length_num = length_obj.ToHandleChecked()->Number();
@@ -706,7 +708,8 @@ static bool IterateElements(Isolate* isolate, Handle<JSObject> receiver,
       isolate, receiver, false, false, visitor);
       break;
     }
-    case SLOPPY_ARGUMENTS_ELEMENTS: {
+    case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
+    case SLOW_SLOPPY_ARGUMENTS_ELEMENTS: {
       for (uint32_t index = 0; index < length; index++) {
         HandleScope loop_scope(isolate);
         Handle<Object> element;