[Libre-soc-dev] WIP demo of deficiency of 6600-derived architecture compared to register renaming

[Jacob Lifshay]

On Tue, Oct 27, 2020, 20:48 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
wrote:

> On 10/28/20, Jacob Lifshay <programmerjake at gmail.com> wrote:
>
> > not really
>
> au good :)
>
> >   both the LDST
> >> *and* all following instructions (all of them) are shadowed by the
> >> LDST.
> >>
> >> so whilst the AGEN (update of ldu) write cannot go ahead, OpFWDing
> >> definitely can.
> >>
> >
> > notice that's exactly what happens to instruction #17.m: the load result
> is
> > forwarded to instruction #18 on cycle 10.
>
> ah fantastic.
>
> sorry jacob i'm in quite a lot of pain at the moment and finding it
> hard to focus.  i may miss things.
>

hope you get better soon!

Jacob