Integrate LLVM at llvm/llvm-project@5166345f5041
Integrate LLVM at llvm/llvm-project@5166345f5041

Updates LLVM usage to match
[5166345f5041](https://github.com/llvm/llvm-project/commit/5166345f5041)

PiperOrigin-RevId: 458487368

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