[llvm] SimplifyIndVar: teach widenLoopCompare about samesign (PR #125764)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

It is still stuck after 24h, so I don't think the issue is going to be resolved. Merging https://github.com/llvm/llvm-project/pull/125851, and closing this one.

https://github.com/llvm/llvm-project/pull/125764