[clang] [llvm] Reland "[LLVM] Add IRNormalizer Pass" (PR #113780)

[Justin Fargnoli via cfe-commits]

justinfargnoli wrote:

@vvereschaka I'm unable to reproduce the build failure locally or via the `buildkite` jobs. 

Are the jobs that you're running on the BuildBot clean builds? 

https://github.com/llvm/llvm-project/pull/113780