Give the exclamation point a name instead of a number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119759 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/AsmMatcherEmitter.cpp

@@ -766,6 +766,7 @@ static std::string getEnumNameForToken(StringRef Str) {
     case '*': Res += "_STAR_"; break;
     case '%': Res += "_PCT_"; break;
     case ':': Res += "_COLON_"; break;
+    case '!': Res += "_EXCLAIM_"; break;
     default:
       if (isalnum(*it))
         Res += *it;