Integrate LLVM at llvm/llvm-project@8b58344efb2e
Integrate LLVM at llvm/llvm-project@8b58344efb2e

Updates LLVM usage to match
[8b58344efb2e](https://github.com/llvm/llvm-project/commit/8b58344efb2e)

PiperOrigin-RevId: 417852187

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