Integrate LLVM at llvm/llvm-project@03512ae9bf31
Integrate LLVM at llvm/llvm-project@03512ae9bf31

Updates LLVM usage to match
[03512ae9bf31](https://github.com/llvm/llvm-project/commit/03512ae9bf31)

PiperOrigin-RevId: 395290184

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