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

Richard Wilbur richard.wilbur at gmail.com
Sun Mar 21 22:48:52 GMT 2021

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.

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