_mm256_mask_cvtepi32_epi64
Classification
AVX-512, Convert, CPUID Test: AVX512F
Header File
Instruction
VPMOVSXDQ ymm {k}, xmm
Synopsis
_mm256_mask_cvtepi32_epi64(__m256i src, __mmask8 k, __m128i a);
Description
Sign extend packed 32-bit integers in "a" to packed 64-bit integers, and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 3
i := 64*j
l := 32*j
IF k[j]
dst[i+63:i] := SignExtend64(a[l+31:l])
ELSE
dst[i+63:i] := src[i+63:i]
FI
ENDFOR
dst[MAX:256] := 0