MCAsmParser: Add dump() hook to MCParsedAsmOperand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110790 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 19d7d9aa..2f6ac8d 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -234,6 +234,8 @@
     addExpr(Inst, getImm());
   }
 
+  virtual void dump(raw_ostream &OS) const {}
+
   static void CreateToken(OwningPtr<ARMOperand> &Op, StringRef Str,
                           SMLoc S) {
     Op.reset(new ARMOperand);