[llvm] [TTI] Add getPointerInfos/getPointerInfo query for target address spaces (PR #213311)

[Luke Lau via llvm-commits]

lukel97 wrote:

> @lukel97, @s-barannikov, @nikic any strong opinions about this?

Is there a target in-tree that you're planning on using this with?

https://github.com/llvm/llvm-project/pull/213311