[Libre-soc-bugs] [Bug 555] encode a dotproduct in a single instruction

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=555

--- Comment #4 from Alexandre Oliva <oliva at gnu.org> ---
fma can be used in reduce mode for dot-product

but matrix multiply amounts to multiple parallel dot-products, so you woulnd't
want non-reduce fma for that

what I can't quite picture as useful (which definitely is no authoritative) is
reduce on the multiply, rather than on the add.

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