Integrate LLVM at llvm/llvm-project@08b3c0d995d8
Integrate LLVM at llvm/llvm-project@08b3c0d995d8

Updates LLVM usage to match
[08b3c0d995d8](https://github.com/llvm/llvm-project/commit/08b3c0d995d8)

PiperOrigin-RevId: 401707538

google-research/structured-additive-IR,google-research/structured-additive-IR