[Libre-soc-bugs] [Bug 755] add grev instruction (OP_GREV)

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=755

--- Comment #37 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #36)

> imho a lut2 version is enough additional latency that, if we're not worried
> about that, we should just merge with the shift/rotate logic, since imho it
> should be similar latency cost and will save a bunch of area.

i made it clear already that i do not want shift/rot touched at all in
any way shape or form right now.

it was complex as hell to write and took several weeks to get right due
to the options added by masks. please consider it 100% off-limits.

no further discussion on modification to shift_rot right now please.

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