Integrate LLVM at llvm/llvm-project@e8e718fa4b85
Integrate LLVM at llvm/llvm-project@e8e718fa4b85

Updates LLVM usage to match
[e8e718fa4b85](https://github.com/llvm/llvm-project/commit/e8e718fa4b85)

PiperOrigin-RevId: 467200619

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