ARM MC .s EmitStartOfAsm proof-of-concept cleanup

lib/MC/MCELFStreamer.cpp

 //===- lib/MC/MCELFStreamer.cpp - ELF Object Output ------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file assembles .s files and emits ELF .o object files.
@@ skipping 179 matching lines @@
   // fragment pointer when we emit the next fragment.
   MCDataFragment *F = getOrCreateDataFragment();
 
   assert(!SD.getFragment() && "Unexpected fragment on symbol data!");
   SD.setFragment(F);
   SD.setOffset(F->getContents().size());
 }
 
 void MCELFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
   switch (Flag) {
+  case MCAF_SyntaxUnified:  return; // no-op here?
   case MCAF_SubsectionsViaSymbols:
     getAssembler().setSubsectionsViaSymbols(true);
     return;
   }
 
   assert(0 && "invalid assembler flag!");
 }
 
 void MCELFStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
   // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into
@@ skipping 343 matching lines @@
 }
 
 MCStreamer *llvm::createELFStreamer(MCContext &Context, TargetAsmBackend &TAB,
                                       raw_ostream &OS, MCCodeEmitter *CE,
                                       bool RelaxAll) {
   MCELFStreamer *S = new MCELFStreamer(Context, TAB, OS, CE);
   if (RelaxAll)
     S->getAssembler().setRelaxAll(true);
   return S;
 }