_mm512_mask_shuffle_epi32
Classification
KNC, Swizzle, CPUID Test: KNCNI
Header File
Instruction
VPSHUFD zmm {k}, zmm, imm8
Synopsis
_mm512_mask_shuffle_epi32(__m512i src, __mmask16 k, __m512i a, _MM_PERM_ENUM imm8);
Description
Shuffle 32-bit integers in "a" within 128-bit lanes using the control in "imm8", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
DEFINE SELECT4(src, control) {
CASE(control[1:0]) OF
0: tmp[31:0] := src[31:0]
1: tmp[31:0] := src[63:32]
2: tmp[31:0] := src[95:64]
3: tmp[31:0] := src[127:96]
ESAC
RETURN tmp[31:0]
}
tmp_dst[31:0] := SELECT4(a[127:0], imm8[1:0])
tmp_dst[63:32] := SELECT4(a[127:0], imm8[3:2])
tmp_dst[95:64] := SELECT4(a[127:0], imm8[5:4])
tmp_dst[127:96] := SELECT4(a[127:0], imm8[7:6])
tmp_dst[159:128] := SELECT4(a[255:128], imm8[1:0])
tmp_dst[191:160] := SELECT4(a[255:128], imm8[3:2])
tmp_dst[223:192] := SELECT4(a[255:128], imm8[5:4])
tmp_dst[255:224] := SELECT4(a[255:128], imm8[7:6])
tmp_dst[287:256] := SELECT4(a[383:256], imm8[1:0])
tmp_dst[319:288] := SELECT4(a[383:256], imm8[3:2])
tmp_dst[351:320] := SELECT4(a[383:256], imm8[5:4])
tmp_dst[383:352] := SELECT4(a[383:256], imm8[7:6])
tmp_dst[415:384] := SELECT4(a[511:384], imm8[1:0])
tmp_dst[447:416] := SELECT4(a[511:384], imm8[3:2])
tmp_dst[479:448] := SELECT4(a[511:384], imm8[5:4])
tmp_dst[511:480] := SELECT4(a[511:384], imm8[7:6])
FOR j := 0 to 15
i := j*32
IF k[j]
dst[i+31:i] := tmp_dst[i+31:i]
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:512] := 0