Integrate LLVM at llvm/llvm-project@7c53a7d390c6
Integrate LLVM at llvm/llvm-project@7c53a7d390c6

Updates LLVM usage to match
[7c53a7d390c6](https://github.com/llvm/llvm-project/commit/7c53a7d390c6)

PiperOrigin-RevId: 385987493

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