Integrate LLVM at llvm/llvm-project@fcf680050686
Integrate LLVM at llvm/llvm-project@fcf680050686

Updates LLVM usage to match
[fcf680050686](https://github.com/llvm/llvm-project/commit/fcf680050686)

PiperOrigin-RevId: 366101230

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