message: [TableGen] Making printer support $cppClass substitution (similar to parser).
diff: @@ -887,8 +887,10 @@ void OpEmitter::genPrinter() {
  return;
  auto &method = opClass.newMethod("void", "print", "OpAsmPrinter *p");
  + FmtContext fctx;
  + fctx.addSubst("cppClass", opClass.getClassName());
  auto printer = codeInit->getValue().ltrim().rtrim(" \t\v\f\r");
  - method.body() << " " << printer;
  + method.body() << " " << tgfmt(printer, &fctx);
  }
  void OpEmitter::genVerifier() {
  