Integrate LLVM at llvm/llvm-project@4ae83bb2b1e2
Integrate LLVM at llvm/llvm-project@4ae83bb2b1e2

Updates LLVM usage to match
[4ae83bb2b1e2](https://github.com/llvm/llvm-project/commit/4ae83bb2b1e2)

PiperOrigin-RevId: 427857886

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