[llvm] [TBAA] Recover !tbaa for a memcpy of struct with same type fields (PR #214116)

[Abhay Kanhere via llvm-commits]

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AbhayKanhere wrote:

https://github.com/cuhk-s3/Archer/issues/21 is the crash I referred to here.

https://github.com/llvm/llvm-project/pull/214116