[llvm] [InferAS] Infer the address space of inttoptr (PR #173244)

[Shilei Tian via llvm-commits]

================

----------------
shiltian wrote:

Oh yeah I see the issue. Well, then I'd say then it is probably a good idea to instead of lazily populating the map inside `getIntToPtrPointerOperand`, add a dedicated non-const pre-population step at the start of `run()`. In this way, it is no need for the `mutable`.

https://github.com/llvm/llvm-project/pull/173244