Do not bailout from optimizing functions that use f(x, arguments)

src/type-info.cc

Index: src/type-info.cc
diff --git a/src/type-info.cc b/src/type-info.cc
index 2c033b020061bb8479d638d59aea41674075dc9f..9808e9a24ae2b54fecffd489a31f30526b8dd56b 100644
--- a/src/type-info.cc
+++ b/src/type-info.cc
@@ -89,6 +89,14 @@ bool TypeFeedbackOracle::StoreIsUninitialized(TypeFeedbackId ast_id) {
 }
 
 
+bool TypeFeedbackOracle::CallIsUninitialized(FeedbackVectorICSlot slot) {
+  Handle<Object> value = GetInfo(slot);
+  return value->IsUndefined() ||
+         value.is_identical_to(
+             TypeFeedbackVector::UninitializedSentinel(isolate()));
+}
+
+
 bool TypeFeedbackOracle::CallIsMonomorphic(FeedbackVectorICSlot slot) {
   Handle<Object> value = GetInfo(slot);
   return value->IsAllocationSite() || value->IsJSFunction();