Integrate LLVM at llvm/llvm-project@494e77138c2e
Integrate LLVM at llvm/llvm-project@494e77138c2e

Updates LLVM usage to match
[494e77138c2e](https://github.com/llvm/llvm-project/commit/494e77138c2e)

PiperOrigin-RevId: 370574378

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