Integrate LLVM at llvm/llvm-project@69754e590f0c
Integrate LLVM at llvm/llvm-project@69754e590f0c

Updates LLVM usage to match
[69754e590f0c](https://github.com/llvm/llvm-project/commit/69754e590f0c)

PiperOrigin-RevId: 470368815

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