[llvm] [WIP] Consider datalayout sentinel pointer value for isKnownNonZero check (PR #91769)

[Shilei Tian via llvm-commits]

shiltian wrote:

Hi @ranapratap55 , I wonder if there is any progress on this. I'm interested in the idea of DL nullptr, which is very helpful For our use.

https://github.com/llvm/llvm-project/pull/91769