message: Integrate LLVM at llvm/llvm-project@078b338ba67a
  Updates LLVM usage to match
  [078b338ba67a](https://github.com/llvm/llvm-project/commit/078b338ba67a)
diff: @@ -4,8 +4,8 @@ load("//third_party:repo.bzl", "tf_http_archive")
  def repo(name):
  """Imports LLVM."""
  - LLVM_COMMIT = "388fbefb4f2aec19da221ebbc3e091919f7520a9"
  - LLVM_SHA256 = "4e329224d846311d812914bfcdcefceeafcf5a0a53ea3506bdc561df5741088e"
  + LLVM_COMMIT = "078b338ba67a26809bad682bbd5617718e2f655b"
  + LLVM_SHA256 = "47a2958adcbba3fd93d7c1428d321a1cbf914de7fa1fa5576074b11600af2616"
  tf_http_archive(
  name = name,
  