[llvm] [MemProf] Fix when CallStackTrie is a single chain with multi alloc type (PR #79433)

[via llvm-commits]

lifengxiang1025 wrote:

> I don't know why there are same callstack

I think the reason is that the callstack's raw address is not same but the correspond function name, line offset and column are same. This happens when compiler unroll the loop or other optimization.

https://github.com/llvm/llvm-project/pull/79433