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

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Sun Jan 17 17:12:06 GMT 2021


--- Comment #111 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---

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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