Vector ICs: Introduce an InstanceType for the type feedback vector.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 7df095d19f1e14f93fac1def465748eb2db8093c..090952244feaba65b951d6ab16c1cdd2ec45be0e 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -978,6 +978,14 @@ Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
 }
 
 
+Handle<TypeFeedbackVector> Factory::CopyTypeFeedbackVector(
+    Handle<TypeFeedbackVector> vector) {
+  CALL_HEAP_FUNCTION(isolate(),
+                     isolate()->heap()->CopyTypeFeedbackVector(*vector),
+                     TypeFeedbackVector);
+}
+
+
 Handle<FixedArray> Factory::CopyAndTenureFixedCOWArray(
     Handle<FixedArray> array) {
   DCHECK(isolate()->heap()->InNewSpace(*array));
@@ -2109,9 +2117,12 @@ template Handle<TypeFeedbackVector> Factory::NewTypeFeedbackVector(
 template Handle<TypeFeedbackVector> Factory::NewTypeFeedbackVector(
     const FeedbackVectorSpec* spec);
 
+
 template <typename Spec>
 Handle<TypeFeedbackVector> Factory::NewTypeFeedbackVector(const Spec* spec) {
-  return TypeFeedbackVector::Allocate<Spec>(isolate(), spec);
+  CALL_HEAP_FUNCTION(isolate(),
+                     isolate()->heap()->AllocateTypeFeedbackVector(spec),
+                     TypeFeedbackVector);
 }
 
 
@@ -2156,6 +2167,9 @@ Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
     Handle<String> name,
     MaybeHandle<Code> maybe_code) {
   Handle<Map> map = shared_function_info_map();
+  FeedbackVectorSpec empty_spec;
+  Handle<TypeFeedbackVector> feedback_vector =
+      NewTypeFeedbackVector(&empty_spec);
   Handle<SharedFunctionInfo> share = New<SharedFunctionInfo>(map, OLD_SPACE);
 
   // Set pointer fields.
@@ -2175,9 +2189,6 @@ Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
   share->set_script(*undefined_value(), SKIP_WRITE_BARRIER);
   share->set_debug_info(*undefined_value(), SKIP_WRITE_BARRIER);
   share->set_inferred_name(*empty_string(), SKIP_WRITE_BARRIER);
-  FeedbackVectorSpec empty_spec(0);
-  Handle<TypeFeedbackVector> feedback_vector =
-      NewTypeFeedbackVector(&empty_spec);
   share->set_feedback_vector(*feedback_vector, SKIP_WRITE_BARRIER);
 #if TRACE_MAPS
   share->set_unique_id(isolate()->GetNextUniqueSharedFunctionInfoId());