builder);
      filtered_ops.push_back(func);
    }
    return;
  }

  llvm::Regex op_regex(tac_filter.op_filter().op_name_pattern());
  module.walk([&](Operation* op) {
    auto named_loc = mlir::dyn_cast<NameLoc>(op->getLoc());
    if (!named_loc) {
      return;
    }
    if (!op_regex.match(named_loc.getName())) {
      return;