[lld] ELF: Introduce --shuffle-padding option. (PR #117653)

[Peter Smith via llvm-commits]

https://github.com/smithp35 commented:

Thanks for the updates.

I think it is fine to say that this is an opt-in feature, don't hand-roll your own table of pointers (like .init_array) and consolidate it into one of the OutputSections that shuffle-padding might be inserted in.

If we had documentation for LLD like GNU ld, I'd suggest that we highlight it as a limitation of the feature. The man page is a possibility, but I think it is probably not worth it as I would expect a custom section name to be chosen.

I don't have any more comments. As an aside there has been some interest in this by the folks that do benchmarking internally.

https://github.com/llvm/llvm-project/pull/117653