old_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tf_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "7362cc5ef50b5ebcbb11380ab13a179902c7b8be"
      LLVM_SHA256 = "3400074362798632988687602f753f6f7a265d8a8493b2b3ae64f12a0a19d98c"
  
      tf_http_archive(
          name = name,
          sha256 = LLVM_SHA256,
          strip_prefix = "llvm-project-{commit}".format(commit = 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),
          ],
          build_file = "//third_party/llvm:BUILD.bazel",
          patch_file = "//third_party/llvm:macos_build_fix.patch",
          link_files = {"//third_party/llvm:run_lit.sh": "mlir/run_lit.sh"},
      )
  
new_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tf_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "a21c557955c6ea5cd02b9a145ad6469c608446c7"
      LLVM_SHA256 = "52271917ba42a51ffe166be9f0fbd67a74abf4d33394b550ec2002c2a76c23c5"
  
      tf_http_archive(
          name = name,
          sha256 = LLVM_SHA256,
          strip_prefix = "llvm-project-{commit}".format(commit = 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),
          ],
          build_file = "//third_party/llvm:BUILD.bazel",
          patch_file = "//third_party/llvm:macos_build_fix.patch",
          link_files = {"//third_party/llvm:run_lit.sh": "mlir/run_lit.sh"},
      )
  
subject: Integrate LLVM at llvm/llvm-project@a21c557955c6