Understanding stack allocation and alignment

Question

I\'m trying to understand how stack alignment works as described in what is "stack alignment"? but I have trouble getting a small example to demonstrate the said b

Answer 1

I've never heard about such a thing as specific stack alignment. If there is alignment requirements for the CPU, alignment is done on all kinds of data memory, no matter if it is stored on the stack or elsewhere. It is starting on an even addresses with 16, 32 or 64 bit of data following.

16 bytes may perhaps be some sort of on-chip cache memory optimization, though that seems a bit far-fetched to me.