Inline fast-bailout-checks for LookupIterator::UpdateProtector

src/lookup.h

Index: src/lookup.h
diff --git a/src/lookup.h b/src/lookup.h
index 026a575f66b03c81b8d2e48265b355205b8569b7..9a053198cbc8378c07c0806964ff0b320b43e06e 100644
--- a/src/lookup.h
+++ b/src/lookup.h
@@ -257,9 +257,17 @@ class LookupIterator final BASE_EMBEDDED {
   }
   Handle<Object> GetDataValue() const;
   void WriteDataValue(Handle<Object> value);
-  void UpdateProtector();
+  inline void UpdateProtector() {
+    if (FLAG_harmony_species && !IsElement() &&
+        (*name_ == heap()->constructor_string() ||
+         *name_ == heap()->species_symbol())) {
+      InternalUpdateProtector();
+    }
+  }
 
  private:
+  void InternalUpdateProtector();
+
   enum class InterceptorState {
     kUninitialized,
     kSkipNonMasking,