_mm512_prefetch_i64scatter_ps
Classification
AVX-512, Store, CPUID Test: AVX512PF
Header File
Instruction
VSCATTERPF0QPS vm64z
Synopsis
_mm512_prefetch_i64scatter_ps(void* base_addr, __m512i vindex, int scale, int hint);
Description
Prefetch single-precision (32-bit) floating-point elements with intent to write into memory using 64-bit indices. Elements are prefetched into cache level "hint", where "hint" is 0 or 1. 32-bit elements are stored at addresses starting at "base_addr" and offset by each 64-bit element in "vindex" (each index is scaled by the factor in "scale"). "scale" should be 1, 2, 4 or 8.
Operation
FOR j := 0 to 7
i := j*64
m := j*64
addr := base_addr + vindex[m+63:m] * ZeroExtend64(scale) * 8
Prefetch(MEM[addr+31:addr], hint)
ENDFOR