Integrate LLVM at llvm/llvm-project@42a90e6017b0
Integrate LLVM at llvm/llvm-project@42a90e6017b0

Updates LLVM usage to match
[42a90e6017b0](https://github.com/llvm/llvm-project/commit/42a90e6017b0)

PiperOrigin-RevId: 474881687

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