[Libre-soc-bugs] [Bug 672] create SVP64 demo / unit test "positional popcount"

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=672

--- Comment #14 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
RISC-V Bitmanip Extension Document Version 0.94-draft Editor: Claire Wolf
Symbiotic GmbH claire at symbioticeda.com January 20, 2021

shriya can you look that up find a link and crossref to section 2.8 p35
in the cookbook wiki page? mention bmatflip and the other instructions
that other ISAs have, but also mention thwt it is the same as Power ISA
VSX vgbbd, which we are adding to SFS Draft as gbbd?

then copy the diagram from vgbbd in the Power Public ISA document,
you find it under vgbbd (search the PDF for "Vector Gather"), include
the colours ok and do it as an SVG like the last one.

there are lots of pieces here and it will make a great FOSDEM talk

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