Integrate LLVM at llvm/llvm-project@cc4bfd7f59d5
Integrate LLVM at llvm/llvm-project@cc4bfd7f59d5

Updates LLVM usage to match
[cc4bfd7f59d5](https://github.com/llvm/llvm-project/commit/cc4bfd7f59d5)

PiperOrigin-RevId: 392947750

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