Integrate LLVM at llvm/llvm-project@7176799a7e19
Integrate LLVM at llvm/llvm-project@7176799a7e19

Updates LLVM usage to match
[7176799a7e19](https://github.com/llvm/llvm-project/commit/7176799a7e19)

PiperOrigin-RevId: 417823460

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