[llvm-branch-commits] [llvm] release/21.x: [TailDup] Delay aggressive computed-goto taildup to after RegAlloc. (#150911) (PR #151680)

[Phoebe Wang via llvm-branch-commits]

phoebewang wrote:

Compared with immediate failures, performance regressions is hard to be found and located. I think that's the reason why we don't backport performance related patches. So I suggest not to backport it especially there's known regression patterns. It's not persuasive a single application not regresses. OTOH, I think it's ok to keep it in main. We will know if there's large effect with time passes.

https://github.com/llvm/llvm-project/pull/151680