[llvm] [Loads] Check if Ptr can be freed between Assume and CtxI. (PR #161255)

[via llvm-commits]

annamthomas wrote:

I was going to ask : Can't the same logic be used in `evaluatePtrAddRecAtMaxBTCWillNotWrap`? 
Looks like you have the MR for it. will review it :)

https://github.com/llvm/llvm-project/pull/161255