[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 09:39:49 BST 2023


https://bugs.libre-soc.org/show_bug.cgi?id=996

--- Comment #13 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #11)
> (In reply to Luke Kenneth Casson Leighton from comment #10)
> > wondering if it should
> > have been matched up with itype.
> 
> I matched it to shadd[uw]:
> | NN | RT | RA  | RB  | sm0| sm1 1 | 0101 110 |Rc| shaddw    | X-Form  |
> | NN | RT | RA  | RB  | sm0| sm1 0 | 1101 110 |Rc| shadd     | X-Form  |
> | NN | RT | RA  | RB  | sm0| sm1 1 | 1101 110 |Rc| shadduw   | X-Form  |

yyeh... was wondering if the whole group (sm) should have been
shifted along.

click.

this is the sandbox.

not actual allocation.  ignore me :)
IBM's job to allocate.

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