Integrate LLVM at llvm/llvm-project@d0a4450ecdaf
Integrate LLVM at llvm/llvm-project@d0a4450ecdaf

Updates LLVM usage to match
[d0a4450ecdaf](https://github.com/llvm/llvm-project/commit/d0a4450ecdaf)

PiperOrigin-RevId: 456994738

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