[llvm] [ValueTracking] isNonZero trunc of sub of ptr2int's with recursive GEP where pointers are limited to a 32bit alloc. (PR #84933)

[via llvm-commits]

bipmis wrote:

> Looks like a case where it's better to change the source code to use the correct type instead (size_t instead of unsigned).

I would agree. However there are scenarios in benchmark applications where source cannot be changed.

https://github.com/llvm/llvm-project/pull/84933