_mm_mask_sllv_epi64
Classification
AVX-512, Shift, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPSLLVQ xmm {k}, xmm, xmm
Synopsis
 _mm_mask_sllv_epi64(__m128i src, __mmask8 k, __m128i a, __m128i count);
Description
Shift packed 64-bit integers in "a" left by the amount specified by the corresponding element in "count" while shifting in zeros, 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 1
	i := j*64
	IF k[j]
		IF count[i+63:i] < 64
			dst[i+63:i] := ZeroExtend64(a[i+63:i] << count[i+63:i])
		ELSE
			dst[i+63:i] := 0
		FI
	ELSE
		dst[i+63:i] := src[i+63:i]
	FI	
ENDFOR
dst[MAX:128] := 0