Integrate LLVM at llvm/llvm-project@8cdf4920c47d
Integrate LLVM at llvm/llvm-project@8cdf4920c47d

Updates LLVM usage to match
[8cdf4920c47d](https://github.com/llvm/llvm-project/commit/8cdf4920c47d)

PiperOrigin-RevId: 344933001

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