[PATCH] ppc/svp64: support svshape2 instruction

[lkcl]

On Mon, Sep 12, 2022 at 7:24 AM Jan Beulich <jbeulich@suse.com> wrote:

> > +{"svshape2", SVM2(22,281),   SVM2_MASK,      SVP64,  PPCVLE, {SVo, yx10, rmm, SVd, sk, mm}},
> The doc talks of 7 arguments, the first one being merely a 3-bit
> one (offs) with the fourth bit there instead being a separate
> "inv". Is the doc stale or the patch?

yep good catch, really appreciated jan, as Dmitry notes in a later message,
i did try adding that "inv" argument you found in
https://libre-soc.org/openpower/sv/remap/#svshape2

but backed it out fast when it reduced the range of the offset.
the offsets being 0-15 (as opposed to 0-7) is an accidental but
very useful compensator for some of the vectors otherwise being
unable to start on anything other than even-numbered boundaries.

l.