Distinguish between ELF 32/64, little/big endian, in the type system of Binary.h

include/llvm/Object/Archive.h

 //===- Archive.h - ar archive file format -----------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the ar archive file format class.
@@ skipping 113 matching lines @@
 
   child_iterator begin_children(bool skip_internal = true) const;
   child_iterator end_children() const;
 
   symbol_iterator begin_symbols() const;
   symbol_iterator end_symbols() const;
 
   // Cast methods.
   static inline bool classof(Archive const *v) { return true; }
   static inline bool classof(Binary const *v) {
-    return v->getType() == Binary::isArchive;
+    return v->isArchive();
   }
 
 private:
   child_iterator SymbolTable;
   child_iterator StringTable;
 };
 
 }
 }
 
 #endif