[llvm] [GVNSink] Fix #77415: GVNSink fails to optimize LLVM IR with debug info (PR #77562)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

Emm, I think the right way to fix this is to avoid sorting pointers and make `GVNSink` deterministic.


https://github.com/llvm/llvm-project/pull/77562