Introduce two new symbols for vector based ICs.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 6994 matching lines @@
 Handle<Object> TypeFeedbackInfo::UninitializedSentinel(Isolate* isolate) {
   return isolate->factory()->uninitialized_symbol();
 }
 
 
 Handle<Object> TypeFeedbackInfo::MegamorphicSentinel(Isolate* isolate) {
   return isolate->factory()->megamorphic_symbol();
 }
 
 
+Handle<Object> TypeFeedbackInfo::PremonomorphicSentinel(Isolate* isolate) {
+  return isolate->factory()->megamorphic_symbol();
+}
+
+
+Handle<Object> TypeFeedbackInfo::GenericSentinel(Isolate* isolate) {
+  return isolate->factory()->generic_symbol();
+}
+
+
 Handle<Object> TypeFeedbackInfo::MonomorphicArraySentinel(Isolate* isolate,
     ElementsKind elements_kind) {
   return Handle<Object>(Smi::FromInt(static_cast<int>(elements_kind)), isolate);
 }
 
 
 Object* TypeFeedbackInfo::RawUninitializedSentinel(Heap* heap) {
   return heap->uninitialized_symbol();
 }
 
@@ skipping 234 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_