[clang] [LifetimeSafety] Add additional test for buildOriginFlowChain (PR #204124)

[Yuan Suo via cfe-commits]

suoyuan666 wrote:

> Very neat! BTW, I am curious, what is the next thing you are going to be working on? Cross block loan tracking?

Thanks, You are right.My next step is to implement multi-block support in `buildOriginFlowChain`.


https://github.com/llvm/llvm-project/pull/204124