_mm256_mask_shldv_epi32
Classification
AVX-512, Shift, CPUID Test: AVX512_VBMI2
Header File
immintrin.h
Instruction
VPSHLDVD ymm {k}, ymm, ymm
Synopsis
 _mm256_mask_shldv_epi32(__m256i a, __mmask8 k, __m256i b, __m256i c);
Description
Concatenate packed 32-bit integers in "a" and "b" producing an intermediate 64-bit result. Shift the result left by the amount specified in the corresponding element of "c", and store the upper 32-bits in "dst" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 7
	i := j*32
	IF k[j]
		tmp[63:0] := ((a[i+31:i] << 32)[63:0] | b[i+31:i]) << (c[i+31:i] & 31)
		dst[i+31:i] := tmp[63:32]
	ELSE
		dst[i+31:i] := a[i+31:i]
	FI
ENDFOR
dst[MAX:256] := 0