Integrate LLVM at llvm/llvm-project@a1344779ab01
Integrate LLVM at llvm/llvm-project@a1344779ab01

Updates LLVM usage to match
[a1344779ab01](https://github.com/llvm/llvm-project/commit/a1344779ab01)

PiperOrigin-RevId: 346312316

iree-org/iree,google/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,google/iree