[BACKEND] bump to most recent LLVM commit 2fe947b477#5591

Merged

antiagainst merged 1 commit intotriton-lang:llvm-headfrom

makslevental:makslevental/most-recent-llvm

Jan 13, 2025

Commits on Jan 12, 2025

This is the most recent working commit on A100. See https://github.com/triton-lang/triton/pull/5540#issuecomment-2585963100 for a full description.
makslevental
committed