Add AsmParser support for darwin tbss directive.

Nothing uses this yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103757 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index 62abf74..b27f151 100644
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -126,6 +126,8 @@
   }
   virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
                             unsigned Size = 0, unsigned ByteAlignment = 0);
+  virtual void EmitTBSSSymbol(MCSymbol *Symbol, uint64_t Size,
+                              unsigned ByteAlignment = 0);
   virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
   virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
   virtual void EmitGPRel32Value(const MCExpr *Value) {
@@ -337,6 +339,11 @@
     SectData.setAlignment(ByteAlignment);
 }
 
+void MCMachOStreamer::EmitTBSSSymbol(MCSymbol *Symbol, uint64_t Size,
+                                     unsigned ByteAlignment) {
+  assert(false && "Implement me!");
+}
+
 void MCMachOStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
   getOrCreateDataFragment()->getContents().append(Data.begin(), Data.end());
 }