message: Integrate LLVM at llvm/llvm-project@49cbf4cd85a9
  Updates LLVM usage to match
  [49cbf4cd85a9](https://github.com/llvm/llvm-project/commit/49cbf4cd85a9)
diff: @@ -4,8 +4,8 @@ load("//third_party:repo.bzl", "tf_http_archive")
  def repo(name):
  """Imports LLVM."""
  - LLVM_COMMIT = "71a45e7c63285614364d3d5dfcb4d48da6e7535d"
  - LLVM_SHA256 = "8d3e0bddc984f999a0dfb7b36dd460d80aaf869b246e1c52847be01a3cc50bc9"
  + LLVM_COMMIT = "49cbf4cd85a9ae6b53947fb8cf39ccfb56becc57"
  + LLVM_SHA256 = "b48235a81cf29ad0e25f5029602eb2dfa092bd0c3a0e4ca785da595415fe29e2"
  tf_http_archive(
  name = name,
  