Integrate LLVM at llvm/llvm-project@5bbe50148f3b
Integrate LLVM at llvm/llvm-project@5bbe50148f3b

Updates LLVM usage to match
[5bbe50148f3b](https://github.com/llvm/llvm-project/commit/5bbe50148f3b)

PiperOrigin-RevId: 413215449

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