Added llvm-mc support for parsing the .desc directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75645 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-mc/AsmParser.h

@@ -109,6 +109,7 @@ private:
   /// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
   /// accepts a single symbol (which should be a label or an external).
   bool ParseDirectiveSymbolAttribute(MCStreamer::SymbolAttr Attr);
+  bool ParseDirectiveDarwinSymbolDesc(); // Darwin specific ".desc"
 
   bool ParseDirectiveComm(bool IsLocal); // ".comm" and ".lcomm"
   bool ParseDirectiveDarwinZerofill(); // Darwin specific ".zerofill"