[llvm] [LICM] Relax Hoistable Branch if all of the incoming node are hoistable (PR #225599)

[Nikita Popov via llvm-commits]

nikic wrote:

All the control flow hoisting support in LICM is basically dead code. I'd rather delete it than invest time in it.

https://github.com/llvm/llvm-project/pull/225599