Comment by fredoralive
2 months ago
ARM Cortex-A cores also allow unaligned access (MCU cores don't though, and older ARM is weird). There's perhaps a hint if the two most popular CPU architectures have ended up in the forgiving approach to unaligned access, rather than the penalising approach of raising an interrupt.
> MCU cores don't though
v6-M doesn't (e.g. Cortex-M0+). v7-M and v8-M do allow unaligned access on Normal memory but not on Device memory.