Integrate LLVM at llvm/llvm-project@94213bc7decb
Integrate LLVM at llvm/llvm-project@94213bc7decb

Updates LLVM usage to match
[94213bc7decb](https://github.com/llvm/llvm-project/commit/94213bc7decb)

PiperOrigin-RevId: 404834147

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