[Libre-soc-bugs] [Bug 324] create POWER9 DIV pipeline

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=324

--- Comment #20 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Jacob Lifshay from comment #18)
> (In reply to Luke Kenneth Casson Leighton from comment #17)
> > done:
> > 
> > [master 428ee14] add in really bad hack which calls trunc_div or trunc_mod
> > https://bugs.libre-soc.org/show_bug.cgi?id=324#c16
> 
> I was thinking that the spec's / and % operators would always translate to
> trunc_div and trunc_rem unless they are the FP operators -- if all inputs
> are non-negative there is no difference between trunc_* and floor div/mod.
> 
> I don't think the hack with detecting if the variable name is `dividend` is
> necessary.
> 
> are there any other uses of the div and rem operators?

according to the spec, the integer div and rem operators are always truncating
division:

÷ Division, with result truncated to integer
% Remainder of integer division

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