[llvm] [Analysis] Track offsets in PtrUseVisitor to revisit when required (PR #179726)

[Nikita Popov via llvm-commits]

nikic wrote:

Hm, if anything that seems to have made it worse: https://llvm-compile-time-tracker.com/compare.php?from=d737229efdb3f3949f9c483d256eea2b946808a9&to=0d26d340b2f3290a14a4de5ca87dab70677f6191&stat=instructions:u

https://github.com/llvm/llvm-project/pull/179726