[Libre-soc-dev] New instruction
programmerjake at gmail.com
Tue Mar 2 18:11:19 GMT 2021
On Tue, Mar 2, 2021, 09:56 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
> On Tuesday, March 2, 2021, Jacob Lifshay <programmerjake at gmail.com> wrote:
> >> 220.127.116.11 Floating Round to Integer Instructions
> >> v3.0C p163
> > i32:
> > it is a wrapping conversion instead of the saturating conversion used by
> > most cpus.
> urr fer god's sake. that means it's running a divide operation.
no... it turns into a single shift and mask operation at the HW
level...such is the fate of division by a constant power of 2.
Yup. Wasm adoption should help there somewhat...though not right now.
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