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

[Nico Weber via llvm-commits]

nico wrote:

Looks like this still breaks tests: http://45.33.8.238/linux/130717/step_12.txt

This is after ec0aa1646e9953d1a8d0d15dc381d3250c854572.

Should we revert for now?

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