Does Zen3 have the short and big accelerated both "rep stosX" and "rep movsX" instructions? For the GPU part, heard about a new "near-0 driver" hardware interf

Does Zen3 have the short and big accelerated both "rep stosX" and "rep movsX" instructions? For the GPU part, heard about a new "near-0 driver" hardware interface. Saw something about vectorized qsort algorithms, AVX-512 does crush AVX2 (and AVX-2048 will crush AVX-512, this is irony...) pertinent enough to add AVX-512? AI? really? :(