old_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tf_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "85ab413b53aeb135eb58dab066afcbf20bef0cf8"
      LLVM_SHA256 = "8dcc2e5494c36b0f7d7f176847e66c1df6546029cd00ee7534744cd11ce46bf2"
  
      tf_http_archive(
          name = name,
          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),
          ],
          link_files = {
              "//third_party/llvm:llvm.autogenerated.BUILD": "llvm/BUILD",
              "//third_party/mlir:BUILD": "mlir/BUILD",
              "//third_party/mlir:test.BUILD": "mlir/test/BUILD",
          },
      )
  
new_contents: """Provides the repository macro to import LLVM."""
  
  load("//third_party:repo.bzl", "tf_http_archive")
  
  def repo(name):
      """Imports LLVM."""
      LLVM_COMMIT = "506df1bbfd16233134a6ddea96ed2d49077840fd"
      LLVM_SHA256 = "4d4db27ac8b1681c102a540f5afa193c2cb064fb52f97fab39a18b97172230b7"
  
      tf_http_archive(
          name = name,
          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),
          ],
          link_files = {
              "//third_party/llvm:llvm.autogenerated.BUILD": "llvm/BUILD",
              "//third_party/mlir:BUILD": "mlir/BUILD",
              "//third_party/mlir:test.BUILD": "mlir/test/BUILD",
          },
      )
  
subject: Integrate LLVM at llvm/llvm-project@506df1bbfd16