Hydrogen should recognize literal smi arrays as fast literals.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index d641688f849be77b908d4c472cd3f98fba0b2f3e..de41d689b5db37c29c62f8b628b0692129d497e9 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1652,21 +1652,6 @@ inline bool AllocationSite::CanTrack(InstanceType type) {
 }
 
 
-inline DependentCode::DependencyGroup AllocationSite::ToDependencyGroup(
-    Reason reason) {
-  switch (reason) {
-    case TENURING:
-      return DependentCode::kAllocationSiteTenuringChangedGroup;
-      break;
-    case TRANSITIONS:
-      return DependentCode::kAllocationSiteTransitionChangedGroup;
-      break;
-  }
-  UNREACHABLE();
-  return DependentCode::kAllocationSiteTransitionChangedGroup;
-}
-
-
 inline void AllocationSite::set_memento_found_count(int count) {
   int value = pretenure_data()->value();
   // Verify that we can count more mementos than we can possibly find in one