[llvm] [InstCombine] Compare `icmp inttoptr, inttoptr` values directly (PR #107012)

[Marina Taylor via llvm-commits]

citymarina wrote:

> Oh wow, that contributor guide looks really thorough. Thank you for writing it!

I've read through the guide carefully and hopefully this revision better meets the expectations. I appreciate the clear instructions!

https://github.com/llvm/llvm-project/pull/107012