That's a good question, I don't know. I suspect the specific case of sdiv may be practically handled already for post-div Armv7a and ARMv8a AARCH32 on dynamica

That's a good question, I don't know. I suspect the specific case of sdiv may be practically handled already for post-div Armv7a and ARMv8a AARCH32 on dynamically loaded operating systems, either by the dynamic loader or the compiler support library choosing to swap in a different implementation of __aeabi_idiv according to the available capabilities.