[clang] [llvm] Revert 159f1c048e08a8780d92858cfc80e723c90235e3 (PR #173893)

[Mingjie Xu via cfe-commits]

https://github.com/Enna1 approved this pull request.

Thanks.

I will try reproduce with https://github.com/dtcxzyw/llvm-opt-benchmark/commit/299446d99f04024d5f569ce1f7e9338c9bcf55fe

https://github.com/llvm/llvm-project/pull/173893