Function mbcnt_lo 

pub fn mbcnt_lo(value: u32, init: u32) -> u32

🔬This is a nightly-only experimental API. (stdarch_amdgpu #149988)

Available on target_arch=amdgpu only.

Masked bit count, low 32 lanes.

Computes the number of bits set in value, masked with a thread mask which contains 1 for all active threads less than the current thread within a wavefront. init is added to the result.