ARM MC .s EmitStartOfAsm proof-of-concept cleanup

include/llvm/MC/MCDirectives.h

 //===- MCDirectives.h - Enums for directives on various targets -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines various enums that represent target-specific directives.
@@ skipping 25 matching lines @@
   MCSA_PrivateExtern,       ///< .private_extern (MachO)
   MCSA_Protected,           ///< .protected (ELF)
   MCSA_Reference,           ///< .reference (MachO)
   MCSA_Weak,                ///< .weak
   MCSA_WeakDefinition,      ///< .weak_definition (MachO)
   MCSA_WeakReference,       ///< .weak_reference (MachO)
   MCSA_WeakDefAutoPrivate   ///< .weak_def_can_be_hidden (MachO)
 };
 
 enum MCAssemblerFlag {
+  MCAF_SyntaxUnified,         ///< .syntax (ARM/ELF)
   MCAF_SubsectionsViaSymbols  ///< .subsections_via_symbols (MachO)
 };
   
 } // end namespace llvm
 
 #endif