[llvm] [SCEV] Handle backedge-count logic for std::reverse like loops (PR #92560)

[Eli Friedman via llvm-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM.  Please don't forget to revise the commit message before you merge.

https://github.com/llvm/llvm-project/pull/92560