Integrate LLVM at llvm/llvm-project@afc760ef3527
Integrate LLVM at llvm/llvm-project@afc760ef3527

Updates LLVM usage to match
[afc760ef3527](https://github.com/llvm/llvm-project/commit/afc760ef3527)

PiperOrigin-RevId: 385019632

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