Re: [oc] PUSH/POP Instructions on RISC?

["Marko Mlinar" <markom@opencores.org>]

> Why are the push/pop instructions never found on risc processors? If a
> processor has two write backs to the register file it doesn't need that
OR1k doesn't have two write ports...

> much more hardware to do post/pre-increment/decrement memory reference
> instructions. Is there a special reason for not having these
> instructions? It's simpler than a scaled memory reference reg+c*reg.
>
> Ali
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