[llvm] [SeparateConstOffsetFromGEP] Reorder trivial GEP chains to separate constants (PR #73056)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

I'm somewhat confused by the description, since this is what I thought the point of the pass was and it already did. What exactly is special about this particular case?

https://github.com/llvm/llvm-project/pull/73056