Re:Counting set bits in an interesting way
by ChrisLomont on Saturday April 30, 2022 @03:05PM
(#31218358)
>All modern CPUs have instructions for that
Not in the embedded space. Here's the architectures supported by gcc. I suspect most of them do not have popcount equivalent instructions. I've used quite a few of them and the only places I expect hardware support are on Intel and ARM. Rarely does another arch have it.
Not in the embedded space. Here's the architectures supported by gcc. I suspect most of them do not have popcount equivalent instructions. I've used quite a few of them and the only places I expect hardware support are on Intel and ARM. Rarely does another arch have it.
https://gcc.gnu.org/backends.html