}

    if (RE2::FullMatch(pass->getName(), *dump_pass_re_)) {
      Dump(absl::StrCat(absl::string_view(pass->getName()), "_before"), op,
           absl::StrCat(absl::Hex(pass_counter_, absl::kZeroPad8)));
    }
  }

  void runAfterPass(mlir::Pass* pass, mlir::Operation* op) override {
    if (RE2::FullMatch(pass->getName(), *dump_pass_re_)) {