[Libre-soc-isa] [Bug 968] document shift-and-add instruction

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=968

--- Comment #15 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Dmitry Selyutin from comment #12)
> Regarding the pseudocode:
> 
> https://git.libre-soc.org/?p=openpower-isa.git;a=commitdiff;
> h=0389a26f6d725335ee1e3d920dc9e87861bff1d6
> 
> Otherwise it'd overflow.

jacob pointed out that using a switch/case is better for
static compilation (to c) which we will be doing shortly.

(In reply to Dmitry Selyutin from comment #13)

> It seems that I no longer have the write access to libreriscv repository; I
> vaguely recall I had it before, what happened?

jacob made unauthorised modifications for about the 3rd time, not following
ptoject procedures, and i had to perform a force-master push (again). jacob
was directly responsible for communicating with everyone to ensure that they
had updated, but obviously missed you.  i only re-add people once i know
that no overwrite damage can occur.  please do check that you are at latest
master commit.

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