[llvm] [Analysis] Teach ScalarEvolution::getRangeRef about more dereferenceable objects (PR #104778)

[David Sherwood via llvm-commits]

david-arm wrote:

@fhahn @nikic Unless there are any objections I plan to land this patch later today as I think I've now addressed all concerns. Thanks!

https://github.com/llvm/llvm-project/pull/104778