message: Integrate LLVM at llvm/llvm-project@76bd4444e361
  Updates LLVM usage to match
  [76bd4444e361](https://github.com/llvm/llvm-project/commit/76bd4444e361)
diff: @@ -686,8 +686,8 @@ def tf_repositories(path_prefix = "", tf_repo_name = ""):
  )
  # Check out LLVM and MLIR from llvm-project.
  - LLVM_COMMIT = "3c696a212ba4328e4f8f92136bc4d728a6490ef7"
  - LLVM_SHA256 = "fb5df5a1eee3dcc0675ad7cd96cede50c9c67a0c1350b1f0f1ded4de90cc5b69"
  + LLVM_COMMIT = "76bd4444e36197465f1c72f4b6f1d59721012a59"
  + LLVM_SHA256 = "805b737a8ff996ea7216818b0969e7f60c3c9d7a9be82198902f53e2a36c44eb"
  LLVM_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),
  