diff --git a/src/builtins.cc b/src/builtins.cc index 23f7bdb1d9..5104f6d0d1 100644 --- a/src/builtins.cc +++ b/src/builtins.cc @@ -660,7 +660,7 @@ BUILTIN(ArraySlice) { int len = -1; if (receiver->IsJSArray()) { JSArray* array = JSArray::cast(receiver); - if (!array->HasFastElements() || + if (!array->HasFastTypeElements() || !IsJSArrayFastElementMovingAllowed(heap, array)) { return CallJsBuiltin(isolate, "ArraySlice", args); } @@ -676,7 +676,7 @@ BUILTIN(ArraySlice) { bool is_arguments_object_with_fast_elements = receiver->IsJSObject() && JSObject::cast(receiver)->map() == arguments_map - && JSObject::cast(receiver)->HasFastElements(); + && JSObject::cast(receiver)->HasFastTypeElements(); if (!is_arguments_object_with_fast_elements) { return CallJsBuiltin(isolate, "ArraySlice", args); } @@ -963,7 +963,7 @@ BUILTIN(ArrayConcat) { int result_len = 0; for (int i = 0; i < n_arguments; i++) { Object* arg = args[i]; - if (!arg->IsJSArray() || !JSArray::cast(arg)->HasFastElements() + if (!arg->IsJSArray() || !JSArray::cast(arg)->HasFastTypeElements() || JSArray::cast(arg)->GetPrototype() != array_proto) { return CallJsBuiltin(isolate, "ArrayConcat", args); }