Integrate LLVM at llvm/llvm-project@caea37b37e6a
Integrate LLVM at llvm/llvm-project@caea37b37e6a

Updates LLVM usage to match
[caea37b37e6a](https://github.com/llvm/llvm-project/commit/caea37b37e6a)

PiperOrigin-RevId: 370202306

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