(I have spent a good amount of time hacking the llvm pass pipeline for my personal project so if there was a significant difference I probably would have seen it by now)
You are correct, that was an uneducated guess on my part.
I just glanced at the IR which was different for some attributes (nounwind vs mustprogress norecurse), but the resulting assembly is 100% identical for every optimization level.
I just glanced at the IR which was different for some attributes (nounwind vs mustprogress norecurse), but the resulting assembly is 100% identical for every optimization level.