[llvm] [Value] Look through inttoptr (add ..) in accumulateConstantOffsets (PR #124981)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

This is valid for this particular icmp transform, but generally users of stripAndAccumulateConstantOffsets will assume that the result still has the same provenance, which is not the case if you look through inttoptr. This needs to be behind a flag.

https://github.com/llvm/llvm-project/pull/124981