[Libre-soc-isa] [Bug 817] Big Integer Math (sv.adde, sv.subfe, sv.madded, 128 by 64-bit -> 64-bit div/rem, maybe more...)

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Sun Oct 2 16:56:13 BST 2022


https://bugs.libre-soc.org/show_bug.cgi?id=817

--- Comment #50 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #49)
> https://www.felixcloutier.com/x86/idiv
> 
> did some investigation, divmod2du is basically identical to idivq

actually it's equivalent to x86's divq, idivq is signed division, divq is
unsigned, divmod2du is unsigned.

I mentioned divq/idivq back in:
https://bugs.libre-soc.org/show_bug.cgi?id=817#c17

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