[Libre-soc-isa] [Bug 559] analyse implications of automatic detection of changing VL loop direction

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=559

--- Comment #6 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #5)
> (In reply to Luke Kenneth Casson Leighton from comment #4)
> > i'm inclined to close this one as invalid.
> 
> I'd instead close it as completed, since we did analyze the implications of
> automatic detection of changing VL loop direction as the title says.

good point :)

still for due diligence there are a few things left to cover.

VSLIDE is the usual instruction which moves registers inside a vector up and
down.  SV you simply leave the elements in place and issue an instruction that
starts at a different offset.

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