Integrate LLVM at llvm/llvm-project@e11b5b87bebf
Integrate LLVM at llvm/llvm-project@e11b5b87bebf

Updates LLVM usage to match
[e11b5b87bebf](https://github.com/llvm/llvm-project/commit/e11b5b87bebf)

PiperOrigin-RevId: 378589304

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