[clang] [llvm] [clang-tools-extra] [InstCombine] Convert or concat to fshl if opposite or concat exists (PR #68502)

[Nikita Popov via cfe-commits]

nikic wrote:

Your original example does not verify: https://alive2.llvm.org/ce/z/Bkd89Z Can you please provide a correct example of what you're trying to do?

https://github.com/llvm/llvm-project/pull/68502