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/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 981245d..874a38a 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -148,6 +148,8 @@
   /// getEndLoc - Get the location of the last token of this operand.
   SMLoc getEndLoc() const { return EndLoc; }
 
+  virtual void dump(raw_ostream &OS) const {}
+
   StringRef getToken() const {
     assert(Kind == Token && "Invalid access!");
     return StringRef(Tok.Data, Tok.Length);