Integrate LLVM at llvm/llvm-project@49a6502cd5c2
Integrate LLVM at llvm/llvm-project@49a6502cd5c2

Updates LLVM usage to match
[49a6502cd5c2](https://github.com/llvm/llvm-project/commit/49a6502cd5c2)

PiperOrigin-RevId: 354936788

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