Integrate LLVM at llvm/llvm-project@8f45b5a7a90f
Integrate LLVM at llvm/llvm-project@8f45b5a7a90f

Updates LLVM usage to match
[8f45b5a7a90f](https://github.com/llvm/llvm-project/commit/8f45b5a7a90f)

PiperOrigin-RevId: 469842873

tensorflow/runtime,tensorflow/runtime,tensorflow/runtime,tensorflow/runtime