[llvm] [DA] Add check for base pointer invariance (PR #148241)

[Ryotaro Kasuga via llvm-commits]

https://github.com/kasuga-fj commented:

> Does the remaining issue occur only with an access having a dependence on itself?

Added another test in https://github.com/llvm/llvm-project/pull/148241/commits/1df731bd84593fbc5690d78b2b125fc8df15c403. Are you considering cases like this? If so, then the answer is YES. The dependencies between two distinct stores can be missed as well (godbolt: https://godbolt.org/z/7Mhb9rzGc).

https://github.com/llvm/llvm-project/pull/148241