TF_ASSERT_OK(NodeBuilder("A", "Placeholder")
                   .Attr("dtype", DT_FLOAT)
                   .Finalize(&graph, &node));

  string actual;
  StringWritableFile file(&actual);
  TF_ASSERT_OK(DumpTextualIRToFile(MlirDumpConfig().emit_location_information(),
                                   graph, /*flib_def=*/nullptr, &file));

  string expected_substr = R"(loc(#loc))";
  ExpectHasSubstr(actual, expected_substr);
}

      if (!s.ok()) {
        LOG(WARNING) << "Write failed: " << s;
        file = nullptr;
      }
    }
  }

  // The file being written to.
  WritableFile* file;
};
}  // namespace

Status DumpTextualIRToFile(const MlirDumpConfig& config, const Graph& graph,
                           const FunctionLibraryDefinition* flib_def,
                           WritableFile* file) {
  WritableFileRawStream os(std::move(file));

namespace tensorflow {

struct MlirDumpConfig;

// Dumps 'graph_def' to a file, as textual IR. Returns the file name chosen.
//
// Note: This is for debugging use and is not optimized for performance.
Status DumpTextualIRToFile(const MlirDumpConfig& config, const Graph& graph,
                           const FunctionLibraryDefinition* flib_def,
                           WritableFile* file);

// Config of the textual dump.