[llvm] [DeadStoreElimination] Refactor out `pushMemUses`, drop dead check (NFC) (PR #98530)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

FYI this PR is not NFC. See https://github.com/dtcxzyw/llvm-opt-benchmark/issues/930.
Hopefully this patch doesn't cause miscompilation :)


https://github.com/llvm/llvm-project/pull/98530