_mm_maskz_cvtepi8_epi64
Classification
AVX-512, Convert, CPUID Test: AVX512F
Header File
Instruction
VPMOVSXBQ xmm {z}, xmm
Synopsis
_mm_maskz_cvtepi8_epi64(__mmask8 k, __m128i a);
Description
Sign extend packed 8-bit integers in the low 2 bytes of "a" to packed 64-bit integers, and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 1
i := 64*j
l := 8*j
IF k[j]
dst[i+63:i] := SignExtend64(a[l+7:l])
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:128] := 0