Integrate LLVM at llvm/llvm-project@804dc3dcf27d
Integrate LLVM at llvm/llvm-project@804dc3dcf27d

Updates LLVM usage to match
[804dc3dcf27d](https://github.com/llvm/llvm-project/commit/804dc3dcf27d)

PiperOrigin-RevId: 382382743

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