message: [TF:XLA] Bump open source llvm revision to r321863
diff: @@ -455,11 +455,11 @@ def tf_workspace(path_prefix="", tf_repo_name=""):
  tf_http_archive(
  name = "llvm",
  urls = [
  - "https://mirror.bazel.build/github.com/llvm-mirror/llvm/archive/cb27e1d0da7f30562ea6c1c4f01393afbf112620.tar.gz",
  - "https://github.com/llvm-mirror/llvm/archive/cb27e1d0da7f30562ea6c1c4f01393afbf112620.tar.gz",
  + "https://mirror.bazel.build/github.com/llvm-mirror/llvm/archive/81a623d6d61cf87847f839e80b047c267020ab0e.tar.gz",
  + "https://github.com/llvm-mirror/llvm/archive/81a623d6d61cf87847f839e80b047c267020ab0e.tar.gz",
  ],
  - sha256 = "d4e4d17040a786bab13bb1b73ec2dc358f0c07214f847076e0ded8de15800782",
  - strip_prefix = "llvm-cb27e1d0da7f30562ea6c1c4f01393afbf112620",
  + sha256 = "be0259c0bd5349200df346c92ba7708341e18ef313fcf7398682b5cff2469137",
  + strip_prefix = "llvm-81a623d6d61cf87847f839e80b047c267020ab0e",
  build_file = str(Label("//third_party/llvm:llvm.BUILD")),
  )
  