Integrate LLVM at llvm/llvm-project@a383b3cca338
Integrate LLVM at llvm/llvm-project@a383b3cca338

Updates LLVM usage to match
[a383b3cca338](https://github.com/llvm/llvm-project/commit/a383b3cca338)

Reverts c031655ca9514e7946bb87eda17cf5932c381a8b
