[turbofan] Utilize type information for alias analysis.

src/field-type.cc

 // Copyright 2016 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.
 
 #include "src/field-type.h"
 
 #include "src/handles-inl.h"
 #include "src/ostreams.h"
 #include "src/types.h"
 
@@ skipping 52 matching lines @@
   if (other->IsNone()) return false;
   if (IsAny()) return false;
   DCHECK(IsClass());
   DCHECK(other->IsClass());
   return this == other;
 }
 
 bool FieldType::NowIs(Handle<FieldType> other) { return NowIs(*other); }
 
 Type* FieldType::Convert(Zone* zone) {
-  if (IsAny()) return Type::Any();
+  if (IsAny()) return Type::NonInternal();
   if (IsNone()) return Type::None();
   DCHECK(IsClass());
   return Type::Class(AsClass(), zone);
 }
 
 void FieldType::PrintTo(std::ostream& os) {
   if (IsAny()) {
     os << "Any";
   } else if (IsNone()) {
     os << "None";
   } else {
     DCHECK(IsClass());
     os << "Class(" << static_cast<void*>(*AsClass()) << ")";
   }
 }
 
 }  // namespace internal
 }  // namespace v8