[PATCH] D81938: [InferAddressSpaces] Handle the pair of `ptrtoint`/`inttoptr`.

[Michael Liao via Phabricator via llvm-commits]

hliao added a comment.

In D81938#2096500 <https://reviews.llvm.org/D81938#2096500>, @arsenm wrote:

> I'm not entirely convinced this is safe in all contexts. I think you can argue that this is safe if it directly feeds a memory instruction, as the access would be undefined if it weren't valid to do the no-op cast. However, I'm not sure if this is safe if used purely in arithmetic contexts. If you're just comparing the reinterpreted pointer values for example, I don't think that would be undefined


Would it be safe if we double-check the target hook and ensure that's a no-op `addrspacecast` between address spaces?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D81938/new/

https://reviews.llvm.org/D81938