old_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tfrt_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "cb9ccd38c55f729a6bd7986bbdcb34755b774240"
      LLVM_SHA256 = "b4aa1005f8c9ead0ec8fcbdf2d8d4c5647dfa735d47d02dcff7e703465a5ffef"
  
      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 = "4c2aba999e54270871d5ff8f6c765e8b834dfe27"
      LLVM_SHA256 = "39ddd5e67513d36a94313d87654c19727d141a599256da550a91531c47789682"
  
      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@4c2aba999e54