[Libre-soc-isa] [Bug 996] add shaddsw or replace shadduw with shaddsw since i32 indexes are waay more common than u32

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Tue Apr 18 08:56:08 BST 2023


--- Comment #9 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #8)
> I added shaddw to the wiki and simulator and tests.
> I allocated PO 22 XO --10101110- since that was available.

the table is here

NN      RT      RA      RB      sm0     sm1 1   0101 110        Rc      shaddw 

designing that table was extremely complex so please don't ignore
it or use a different allocation.

the table page included there is the canonical allocation table
for anything in EXT022. please do ensure that you remember that
at all times when adding instructions.

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