[Libre-soc-dev] [RFC] svp64 "source zeroing" makes no sense

[Richard Wilbur]

On Sun, Mar 21, 2021 at 4:13 PM Luke Kenneth Casson Leighton
<lkcl at lkcl.net> wrote:
>
> so on each iteration, here are the four options, assume predicates on both
> src and dest:
>
> * no zeroing.  this is a back-to-back VREDUCE-VEXPAND
>
> *  source-predicate zeroing this is a VREDUCE with zeros inserted into the
> output

I guess it escapes me why this is called source predicate zeroing if
it only affects the output.  That seems like a separate/secondary
destination zeroing mask.