[llvm] Enumerate all passes being invoked in each optimization level with comprehensive script code to generate the comparison report between optimization level O2 and O3. (PR #144921)

[Yanzuo Liu via llvm-commits]

zwuis wrote:

You should fork https://github.com/Ritanya-B-Bharadwaj/llvm-project and create Pull Request there.

https://github.com/llvm/llvm-project/pull/144921