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Unified Diff: src/runtime/runtime-object.cc

Issue 754863002: Optimize testing for an index's existence in packed Arrays (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: All fixed Created 6 years, 1 month ago
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Index: src/runtime/runtime-object.cc
diff --git a/src/runtime/runtime-object.cc b/src/runtime/runtime-object.cc
index de4e81248866601bad2a4f25dfdf237330c7a272..be63826b17f5fb4722366d4ce735398cb9cd7348 100644
--- a/src/runtime/runtime-object.cc
+++ b/src/runtime/runtime-object.cc
@@ -1591,5 +1591,14 @@ RUNTIME_FUNCTION(RuntimeReference_ClassOf) {
if (!obj->IsJSReceiver()) return isolate->heap()->null_value();
return JSReceiver::cast(obj)->class_name();
}
+
+
+RUNTIME_FUNCTION(RuntimeReference_HasFastPackedElements) {
+ SealHandleScope shs(isolate);
+ DCHECK(args.length() == 1);
+ CONVERT_ARG_CHECKED(HeapObject, obj, 0);
+ return isolate->heap()->ToBoolean(
+ IsFastPackedElementsKind(obj->map()->elements_kind()));
+}
}
} // namespace v8::internal
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