[Libre-soc-isa] [Bug 1057] maybe split out all int/fp min/max ops into their own RFC

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Thu Apr 13 22:39:00 BST 2023


https://bugs.libre-soc.org/show_bug.cgi?id=1057

--- Comment #2 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #0)
> we will likely need them for vector reductions before we submit the a/v and
> transcendentals RFCs.

and also min/max combined with inner product matrix equals
"Warshall Transitive Closure". yep let's do it.

(In reply to Jacob Lifshay from comment #1)
> full list:
> fminnum08(s)
> fmaxnum08(s)

making me nervous the quantity, can we do the same trick
of a mode-operand and get them down in quantity?
the fp op table likely has the mode bits already.


> mins
> maxs
> minu
> maxu

happy with these.

important justification, that using VSX may have
different meaning (SVP64/VSX) so it is *really*
crucial to have SVP64/SFFS ops.

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