ARM MC .s EmitStartOfAsm proof-of-concept cleanup

lib/Target/ARM/ARMAsmPrinter.cpp

 //===-- ARMAsmPrinter.cpp - Print machine code to an ARM .s file ----------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file contains a printer that converts from our internal representation
@@ skipping 1151 matching lines @@
       const MCSection *StaticInitSect =
         OutContext.getMachOSection("__TEXT", "__StaticInit",
                                    MCSectionMachO::S_REGULAR |
                                    MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
                                    SectionKind::getText());
       OutStreamer.SwitchSection(StaticInitSect);
     }
   }
 
   // Use unified assembler syntax.
-  OutStreamer.EmitRawText(StringRef("\t.syntax unified"));
+  OutStreamer.EmitAssemblerFlag(MCAF_SyntaxUnified);
 
   // Emit ARM Build Attributes
   if (Subtarget->isTargetELF()) {
     // CPU Type
     std::string CPUString = Subtarget->getCPUString();
     if (CPUString != "generic")
       OutStreamer.EmitRawText("\t.cpu " + Twine(CPUString));
 
     // FIXME: Emit FPU type
     if (Subtarget->hasVFP2())
@@ skipping 794 matching lines @@
 
 // Force static initialization.
 extern "C" void LLVMInitializeARMAsmPrinter() {
   RegisterAsmPrinter<ARMAsmPrinter> X(TheARMTarget);
   RegisterAsmPrinter<ARMAsmPrinter> Y(TheThumbTarget);
 
   TargetRegistry::RegisterMCInstPrinter(TheARMTarget, createARMMCInstPrinter);
   TargetRegistry::RegisterMCInstPrinter(TheThumbTarget, createARMMCInstPrinter);
 }