Of course that'd result in entirely-avoidable slowdown for the potentially-misaligned ops. Perhaps fine for a program that doesn't use them frequently, but quite bad for ones that need misaligned ops everywhere.

In terms of correctness, there's also the possibility of partially-misaligned ops (e.g. an 8B load with 4B alignment, loading two adjacent int32_t fields) so you're not handling everything with correct faults anyways.