Optimize HandleApiCallHelper and friends

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index a5da88a0b3b2e0b5e44b17e0918d17655ea38e09..2c5af76b31dc744d1549974b2b66c6b263e50cc6 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -988,10 +988,8 @@ bool Object::ToInt32(int32_t* value) {
   return false;
 }
 
-
-bool FunctionTemplateInfo::IsTemplateFor(Object* object) {
-  if (!object->IsHeapObject()) return false;
-  return IsTemplateFor(HeapObject::cast(object)->map());
+bool FunctionTemplateInfo::IsTemplateFor(JSObject* object) {
+  return IsTemplateFor(object->map());
 }
 
 
@@ -1014,26 +1012,6 @@ bool FunctionTemplateInfo::IsTemplateFor(Map* map) {
 }
 
 
-// TODO(dcarney): CallOptimization duplicates this logic, merge.
-Object* FunctionTemplateInfo::GetCompatibleReceiver(Isolate* isolate,
-                                                    Object* receiver) {
-  // API calls are only supported with JSObject receivers.
-  if (!receiver->IsJSObject()) return isolate->heap()->null_value();
-  Object* recv_type = this->signature();
-  // No signature, return holder.
-  if (recv_type->IsUndefined(isolate)) return receiver;
-  FunctionTemplateInfo* signature = FunctionTemplateInfo::cast(recv_type);
-  // Check the receiver.
-  for (PrototypeIterator iter(isolate, JSObject::cast(receiver),
-                              kStartAtReceiver,
-                              PrototypeIterator::END_AT_NON_HIDDEN);
-       !iter.IsAtEnd(); iter.Advance()) {
-    if (signature->IsTemplateFor(iter.GetCurrent())) return iter.GetCurrent();
-  }
-  return isolate->heap()->null_value();
-}
-
-
 // static
 MaybeHandle<JSObject> JSObject::New(Handle<JSFunction> constructor,
                                     Handle<JSReceiver> new_target,