[Libre-soc-isa] [Bug 213] SimpleV Standard writeup needed

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=213

--- Comment #111 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
https://libre-soc.org/openpower/sv/svp64/appendix/

it just occurred to me that we actually need two different kinds of reduction:

* scalar accumulator O(VL)
* vector tree-based map-reduce O(VL log VL)

the first is dead simple to identify:

* destination is a scalar
* destination is one of the sources

the most obvious one there of the first type is FMA.

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