old_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tfrt_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "bfb4c0c37078aa5ce251752d99310ccb05e1296a"
      LLVM_SHA256 = "ef411b96a9c023a203de284675e640ead671bbe99069b8dcce2c8a7f46ff5b00"
  
      tfrt_http_archive(
          name = name,
          build_file = "//third_party/llvm:BUILD",
          sha256 = LLVM_SHA256,
          strip_prefix = "llvm-project-" + LLVM_COMMIT,
          urls = [
              "https://storage.googleapis.com/mirror.tensorflow.org/github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),
              "https://github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),
          ],
      )
  
new_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tfrt_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "18bf42c0a68828b5e7247bcee87ec56f3e6f234b"
      LLVM_SHA256 = "d8c13b005ddd8d25db6c20caf01584a28b04f768b11c66fc6b8a711f9dcf2416"
  
      tfrt_http_archive(
          name = name,
          build_file = "//third_party/llvm:BUILD",
          sha256 = LLVM_SHA256,
          strip_prefix = "llvm-project-" + LLVM_COMMIT,
          urls = [
              "https://storage.googleapis.com/mirror.tensorflow.org/github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),
              "https://github.com/llvm/llvm-project/archive/{commit}.tar.gz".format(commit = LLVM_COMMIT),
          ],
      )
  
subject: Integrate LLVM at llvm/llvm-project@18bf42c0a688