Integrate LLVM at llvm/llvm-project@41454ab25645
Integrate LLVM at llvm/llvm-project@41454ab25645

Updates LLVM usage to match
[41454ab25645](https://github.com/llvm/llvm-project/commit/41454ab25645)

PiperOrigin-RevId: 419059801

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