[llvm] [SCCP] Propagate non-null pointers (PR #106090)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw requested changes to this pull request.

Can you have a look at https://github.com/dtcxzyw/llvm-opt-benchmark/pull/1247/files#r1731703928?
This patch seems to incorrectly remove the null pointer checking in https://github.com/abseil/abseil-cpp/blob/master/absl/time/internal/cctz/src/time_zone_format.cc#L623-L646.


https://github.com/llvm/llvm-project/pull/106090