Integrate LLVM at llvm/llvm-project@fc02ceb12aed
Integrate LLVM at llvm/llvm-project@fc02ceb12aed

Updates LLVM usage to match
[fc02ceb12aed](https://github.com/llvm/llvm-project/commit/fc02ceb12aed)

PiperOrigin-RevId: 416002203

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