psllq

Packed Shift Left Logical Quadword (MMX)

PSLLQ mm, imm8

Shifts quadword left (MMX).

Details

Performs a logical left shift on one packed 64-bit quadword in the destination MMX register by the count specified in the 8-bit immediate operand, shifting bits out to the left and filling vacated positions with zeros. No EFLAGS are affected; shift counts greater than or equal to 64 result in zero.

Pseudocode Operation

count ← src & 0xFF
if (count >= 64) {
  dest.qword[0] ← 0x0000000000000000
} else {
  dest.qword[0] ← dest.qword[0] << count
}

Example

PSLLQ mm, 3

Encoding

Binary Layout
0F
+0
73
+1
ModRM
+2
 
Format MMX
Opcode 66 0F 73 /6 ib
Extension MMX

Operands

  • dest
    64-bit MMX register
  • src
    8-bit signed immediate

Reference (Intel® SDM)

Instruction Forms

Opcode Instruction Op/En 64/32-bit Mode CPUID Description
NP 0F F1 /r1 PSLLW mm, mm/m64 A V/V MMX Shift words in mm left mm/m64 while shifting in 0s.
66 0F F1 /r PSLLW xmm1, xmm2/m128 A V/V SSE2 Shift words in xmm1 left by xmm2/m128 while shifting in 0s.
NP 0F 71 /6 ib PSLLW mm1, imm8 B V/V MMX Shift words in mm left by imm8 while shifting in 0s.
66 0F 71 /6 ib PSLLW xmm1, imm8 B V/V SSE2 Shift words in xmm1 left by imm8 while shifting in 0s.
66 0F F2 /r PSLLD xmm1, xmm2/m128 A V/V SSE2 B MMX Shift doublewords in xmm1 left by xmm2/m128 while shifting in 0s. NP 0F 72 /6 ib1 V/V Shift doublewords in mm left by imm8 while PSLLD mm, imm8 shifting in 0s.
66 0F 72 /6 ib PSLLD xmm1, imm8 B V/V SSE2 Shift doublewords in xmm1 left by imm8 while shifting in 0s.
NP 0F F3 /r1 PSLLQ mm, mm/m64 A V/V MMX Shift quadword in mm left by mm/m64 while shifting in 0s.
66 0F F3 /r PSLLQ xmm1, xmm2/m128 A V/V SSE2 B MMX Shift quadwords in xmm1 left by xmm2/m128 while shifting in 0s. NP 0F 73 /6 ib1 V/V Shift quadword in mm left by imm8 while PSLLQ mm, imm8 shifting in 0s.
66 0F 73 /6 ib PSLLQ xmm1, imm8 B V/V SSE2 Shift quadwords in xmm1 left by imm8 while shifting in 0s.
VEX.128.66.0F.WIG F1 /r VPSLLW xmm1, xmm2, xmm3/m128 C V/V AVX Shift words in xmm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.128.66.0F.WIG 71 /6 ib VPSLLW xmm1, xmm2, imm8 D V/V AVX Shift words in xmm2 left by imm8 while shifting in 0s.
VEX.128.66.0F.WIG F2 /r VPSLLD xmm1, xmm2, xmm3/m128 C V/V AVX Shift doublewords in xmm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.128.66.0F.WIG 72 /6 ib VPSLLD xmm1, xmm2, imm8 D V/V AVX Shift doublewords in xmm2 left by imm8 while shifting in 0s.
VEX.128.66.0F.WIG F3 /r VPSLLQ xmm1, xmm2, xmm3/m128 C V/V AVX Shift quadwords in xmm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.128.66.0F.WIG 73 /6 ib VPSLLQ xmm1, xmm2, imm8 D V/V AVX Shift quadwords in xmm2 left by imm8 while shifting in 0s.
VEX.256.66.0F.WIG F1 /r VPSLLW ymm1, ymm2, xmm3/m128 C V/V AVX2 Shift words in ymm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.256.66.0F.WIG 71 /6 ib VPSLLW ymm1, ymm2, imm8 D V/V AVX2 Shift words in ymm2 left by imm8 while shifting in 0s. PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical Vol. 2B 4-443 Opcode/ Op/ 64/32 bit CPUID Feature Description Instruction En Mode Flag Support
VEX.256.66.0F.WIG F2 /r VPSLLD ymm1, ymm2, xmm3/m128 C V/V AVX2 Shift doublewords in ymm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.256.66.0F.WIG 72 /6 ib VPSLLD ymm1, ymm2, imm8 D V/V AVX2 Shift doublewords in ymm2 left by imm8 while shifting in 0s.
VEX.256.66.0F.WIG F3 /r VPSLLQ ymm1, ymm2, xmm3/m128 C V/V AVX2 Shift quadwords in ymm2 left by amount specified in xmm3/m128 while shifting in 0s.
VEX.256.66.0F.WIG 73 /6 ib VPSLLQ ymm1, ymm2, imm8 D V/V AVX2 Shift quadwords in ymm2 left by imm8 while shifting in 0s.
EVEX.128.66.0F.WIG F1 /r VPSLLW xmm1 {k1}{z}, xmm2, xmm3/m128 V/V G (AVX512VL AND AVX512BW) OR AVX10.1 Shift words in xmm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1.
EVEX.256.66.0F.WIG F1 /r VPSLLW ymm1 {k1}{z}, ymm2, xmm3/m128 V/V G (AVX512VL AND AVX512BW) OR AVX10.1 Shift words in ymm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1.
EVEX.512.66.0F.WIG F1 /r VPSLLW zmm1 {k1}{z}, zmm2, xmm3/m128 V/V G AVX512BW OR AVX10.1 Shift words in zmm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1.
EVEX.128.66.0F.WIG 71 /6 ib VPSLLW xmm1 {k1}{z}, xmm2/m128, imm8 V/V E (AVX512VL AND AVX512BW) OR AVX10.1 Shift words in xmm2/m128 left by imm8 while shifting in 0s using writemask k1.
EVEX.256.66.0F.WIG 71 /6 ib VPSLLW ymm1 {k1}{z}, ymm2/m256, imm8 V/V E (AVX512VL AND AVX512BW) OR AVX10.1 Shift words in ymm2/m256 left by imm8 while shifting in 0s using writemask k1.
EVEX.512.66.0F.WIG 71 /6 ib VPSLLW zmm1 {k1}{z}, zmm2/m512, imm8 V/V E AVX512BW OR AVX10.1 Shift words in zmm2/m512 left by imm8 while shifting in 0 using writemask k1.
EVEX.128.66.0F.W0 F2 /r VPSLLD xmm1 {k1}{z}, xmm2, xmm3/m128 V/V G (AVX512VL AND AVX512F) OR AVX10.1 Shift doublewords in xmm2 left by amount specified in xmm3/m128 while shifting in 0s under writemask k1.
EVEX.256.66.0F.W0 F2 /r VPSLLD ymm1 {k1}{z}, ymm2, xmm3/m128 V/V G (AVX512VL AND AVX512F) OR AVX10.1 Shift doublewords in ymm2 left by amount specified in xmm3/m128 while shifting in 0s under writemask k1.
EVEX.512.66.0F.W0 F2 /r VPSLLD zmm1 {k1}{z}, zmm2, xmm3/m128 V/V G AVX512F OR AVX10.1 Shift doublewords in zmm2 left by amount specified in xmm3/m128 while shifting in 0s under writemask k1.
EVEX.128.66.0F.W0 72 /6 ib VPSLLD xmm1 {k1}{z}, xmm2/m128/m32bcst, imm8 V/V F (AVX512VL AND AVX512F) OR AVX10.1 Shift doublewords in xmm2/m128/m32bcst left by imm8 while shifting in 0s using writemask k1.
EVEX.256.66.0F.W0 72 /6 ib VPSLLD ymm1 {k1}{z}, ymm2/m256/m32bcst, imm8 V/V F (AVX512VL AND AVX512F) OR AVX10.1 Shift doublewords in ymm2/m256/m32bcst left by imm8 while shifting in 0s using writemask k1.
EVEX.512.66.0F.W0 72 /6 ib VPSLLD zmm1 {k1}{z}, zmm2/m512/m32bcst, imm8 V/V F AVX512F OR AVX10.1 Shift doublewords in zmm2/m512/m32bcst left by imm8 while shifting in 0s using writemask k1.
EVEX.128.66.0F.W1 F3 /r VPSLLQ xmm1 {k1}{z}, xmm2, xmm3/m128 V/V G (AVX512VL AND AVX512F) OR AVX10.1 Shift quadwords in xmm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1. PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical Vol. 2B 4-444 Opcode/ Op/ 64/32 bit CPUID Feature Description Instruction En Mode Flag Support
EVEX.256.66.0F.W1 F3 /r VPSLLQ ymm1 {k1}{z}, ymm2, xmm3/m128 V/V G (AVX512VL AND AVX512F) OR AVX10.1 Shift quadwords in ymm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1.
EVEX.512.66.0F.W1 F3 /r VPSLLQ zmm1 {k1}{z}, zmm2, xmm3/m128 V/V G AVX512F OR AVX10.1 Shift quadwords in zmm2 left by amount specified in xmm3/m128 while shifting in 0s using writemask k1.
EVEX.128.66.0F.W1 73 /6 ib VPSLLQ xmm1 {k1}{z}, xmm2/m128/m64bcst, imm8 V/V F (AVX512VL AND AVX512F) OR AVX10.1 Shift quadwords in xmm2/m128/m64bcst left by imm8 while shifting in 0s using writemask k1.
EVEX.256.66.0F.W1 73 /6 ib VPSLLQ ymm1 {k1}{z}, ymm2/m256/m64bcst, imm8 V/V F (AVX512VL AND AVX512F) OR AVX10.1 Shift quadwords in ymm2/m256/m64bcst left by imm8 while shifting in 0s using writemask k1.
EVEX.512.66.0F.W1 73 /6 ib VPSLLQ zmm1 {k1}{z}, zmm2/m512/m64bcst, imm8 V/V F AVX512F OR AVX10.1 Shift quadwords in zmm2/m512/m64bcst left by imm8 while shifting in 0s using writemask k1.

Instruction Operand Encoding

Op/En Tuple Type Operand 1 Operand 2 Operand 3 Operand 4
A N/A ModRM:reg (r, w) ModRM:r/m (r) N/A N/A
B N/A ModRM:r/m (r, w) imm8 N/A N/A
C N/A ModRM:reg (w) VEX.vvvv (r) ModRM:r/m (r) N/A
D N/A VEX.vvvv (w) ModRM:r/m (r) imm8 N/A

Description

Shifts the bits in the individual data elements (words, doublewords, or quadword) in the destination operand (first operand) to the left by the number of bits specified in the count operand (second operand). As the bits in the data elements are shifted left, the empty low-order bits are cleared (set to 0). If the value specified by the count operand is greater than 15 (for words), 31 (for doublewords), or 63 (for a quadword), then the destination operand is set to all 0s. Figure 4-17 gives an example of shifting words in a 64-bit operand. Pre-Shift X3 X2 X1 X0 DEST Shift Left with Zero Extension Post-Shift DEST X3 << COUNT X2 << COUNT X1 << COUNT X0 << COUNT Figure 4-17. PSLLW, PSLLD, and PSLLQ Instruction Operation Using 64-bit Operand PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical Vol. 2B 4-445 The (V)PSLLW instruction shifts each of the words in the destination operand to the left by the number of bits specified in the count operand; the (V)PSLLD instruction shifts each of the doublewords in the destination operand; and the (V)PSLLQ instruction shifts the quadword (or quadwords) in the destination operand. In 64-bit mode and not encoded with VEX/EVEX, using a REX prefix in the form of REX.R permits this instruction to access additional registers (XMM8-XMM15). Legacy SSE instructions 64-bit operand: The destination operand is an MMX technology register; the count operand can be either an MMX technology register or an 64-bit memory location. 128-bit Legacy SSE version: The destination and first source operands are XMM registers. Bits (MAXVL-1:128) of the corresponding YMM destination register remain unchanged. The count operand can be either an XMM register or a 128-bit memory location or an 8-bit immediate. If the count operand is a memory address, 128 bits are loaded but the upper 64 bits are ignored. VEX.128 encoded version: The destination and first source operands are XMM registers. Bits (MAXVL-1:128) of the destination YMM register are zeroed. The count operand can be either an XMM register or a 128-bit memory location or an 8-bit immediate. If the count operand is a memory address, 128 bits are loaded but the upper 64 bits are ignored. VEX.256 encoded version: The destination operand is a YMM register. The source operand is a YMM register or a memory location. The count operand can come either from an XMM register or a memory location or an 8-bit immediate. Bits (MAXVL-1:256) of the corresponding ZMM register are zeroed. EVEX encoded versions: The destination operand is a ZMM register updated according to the writemask. The count operand is either an 8-bit immediate (the immediate count version) or an 8-bit value from an XMM register or a memory location (the variable count version). For the immediate count version, the source operand (the second operand) can be a ZMM register, a 512-bit memory location or a 512-bit vector broadcasted from a 32/64-bit memory location. For the variable count version, the first source operand (the second operand) is a ZMM register, the second source operand (the third operand, 8-bit variable count) can be an XMM register or a memory location. Note: In VEX/EVEX encoded versions of shifts with an immediate count, vvvv of VEX/EVEX encode the destination register, and VEX.B/EVEX.B + ModRM.r/m encodes the source register. Note: For shifts with an immediate count (VEX.128.66.0F 71-73 /6, or EVEX.128.66.0F 71-73 /6), VEX.vvvv/EVEX.vvvv encodes the destination register.

Operation

PSLLW (With 64-bit Operand)
IF (COUNT > 15)
THEN
DEST[64:0] := 0000000000000000H;
ELSE
DEST[15:0] := ZeroExtend(DEST[15:0] << COUNT);
(* Repeat shift operation for 2nd and 3rd words *)
DEST[63:48] := ZeroExtend(DEST[63:48] << COUNT);
FI;
PSLLD (with 64-bit operand)
IF (COUNT > 31)
THEN
DEST[64:0] := 0000000000000000H;
ELSE
DEST[31:0] := ZeroExtend(DEST[31:0] << COUNT);
DEST[63:32] := ZeroExtend(DEST[63:32] << COUNT);
FI;

PSLLQ (With 64-bit Operand)
IF (COUNT > 63)
THEN
DEST[64:0] := 0000000000000000H;
ELSE


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-446
DEST := ZeroExtend(DEST << COUNT);
FI;

LOGICAL_LEFT_SHIFT_WORDS(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 15)
THEN
DEST[127:0] := 00000000000000000000000000000000H
ELSE
DEST[15:0] := ZeroExtend(SRC[15:0] << COUNT);
(* Repeat shift operation for 2nd through 7th words *)
DEST[127:112] := ZeroExtend(SRC[127:112] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_DWORDS1(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 31)
THEN
DEST[31:0] := 0
ELSE
DEST[31:0] := ZeroExtend(SRC[31:0] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_DWORDS(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 31)
THEN
DEST[127:0] := 00000000000000000000000000000000H
ELSE
DEST[31:0] := ZeroExtend(SRC[31:0] << COUNT);
(* Repeat shift operation for 2nd through 3rd words *)
DEST[127:96] := ZeroExtend(SRC[127:96] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_QWORDS1(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 63)
THEN
DEST[63:0] := 0
ELSE
DEST[63:0] := ZeroExtend(SRC[63:0] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_QWORDS(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 63)
THEN
DEST[127:0] := 00000000000000000000000000000000H
ELSE
DEST[63:0] := ZeroExtend(SRC[63:0] << COUNT);
DEST[127:64] := ZeroExtend(SRC[127:64] << COUNT);
FI;
LOGICAL_LEFT_SHIFT_WORDS_256b(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-447
IF (COUNT > 15)
THEN
DEST[127:0] := 00000000000000000000000000000000H
DEST[255:128] := 00000000000000000000000000000000H
ELSE
DEST[15:0] := ZeroExtend(SRC[15:0] << COUNT);
(* Repeat shift operation for 2nd through 15th words *)
DEST[255:240] := ZeroExtend(SRC[255:240] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 31)
THEN
DEST[127:0] := 00000000000000000000000000000000H
DEST[255:128] := 00000000000000000000000000000000H
ELSE
DEST[31:0] := ZeroExtend(SRC[31:0] << COUNT);
(* Repeat shift operation for 2nd through 7th words *)
DEST[255:224] := ZeroExtend(SRC[255:224] << COUNT);
FI;

LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC, COUNT_SRC)
COUNT := COUNT_SRC[63:0];
IF (COUNT > 63)
THEN
DEST[127:0] := 00000000000000000000000000000000H
DEST[255:128] := 00000000000000000000000000000000H
ELSE
DEST[63:0] := ZeroExtend(SRC[63:0] << COUNT);
DEST[127:64] := ZeroExtend(SRC[127:64] << COUNT)
DEST[191:128] := ZeroExtend(SRC[191:128] << COUNT);
DEST[255:192] := ZeroExtend(SRC[255:192] << COUNT);
FI;

VPSLLW (EVEX Versions, xmm/m128)
(KL, VL) = (8, 128), (16, 256), (32, 512)
IF VL = 128
TMP_DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS_128b(SRC1[127:0], SRC2)
FI;
IF VL = 256
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1[255:0], SRC2)
FI;
IF VL = 512
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1[255:0], SRC2)
TMP_DEST[511:256] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1[511:256], SRC2)
FI;

FOR j := 0 TO KL-1
i := j * 16
IF k1[j] OR *no writemask*
THEN DEST[i+15:i] := TMP_DEST[i+15:i]
ELSE
IF *merging-masking*                                 ; merging-masking


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-448
THEN *DEST[i+15:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+15:i] = 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPSLLW (EVEX Versions, imm8)
(KL, VL) = (8, 128), (16, 256), (32, 512)
IF VL = 128
TMP_DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS_128b(SRC1[127:0], imm8)
FI;
IF VL = 256
TMP_DEST[255:0] := LOGICAL_RIGHT_SHIFT_WORDS_256b(SRC1[255:0], imm8)
FI;
IF VL = 512
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1[255:0], imm8)
TMP_DEST[511:256] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1[511:256], imm8)
FI;

FOR j := 0 TO KL-1
i := j * 16
IF k1[j] OR *no writemask*
THEN DEST[i+15:i] := TMP_DEST[i+15:i]
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[i+15:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+15:i] = 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPSLLW (ymm, ymm, xmm/m128) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_WORDS_256b(SRC1, SRC2)
DEST[MAXVL-1:256] := 0;

VPSLLW (ymm, imm8) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_WORD_256b(SRC1, imm8)
DEST[MAXVL-1:256] := 0;

VPSLLW (xmm, xmm, xmm/m128) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS(SRC1, SRC2)
DEST[MAXVL-1:128] := 0

VPSLLW (xmm, imm8) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS(SRC1, imm8)
DEST[MAXVL-1:128] := 0

PSLLW (xmm, xmm, xmm/m128)
DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS(DEST, SRC)
DEST[MAXVL-1:128] (Unmodified)


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-449
PSLLW (xmm, imm8)
DEST[127:0] := LOGICAL_LEFT_SHIFT_WORDS(DEST, imm8)
DEST[MAXVL-1:128] (Unmodified)

VPSLLD (EVEX versions, imm8)
(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1
i := j * 32
IF k1[j] OR *no writemask* THEN
IF (EVEX.b = 1) AND (SRC1 *is memory*)
THEN DEST[i+31:i] := LOGICAL_LEFT_SHIFT_DWORDS1(SRC1[31:0], imm8)
ELSE DEST[i+31:i] := LOGICAL_LEFT_SHIFT_DWORDS1(SRC1[i+31:i], imm8)
FI;
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[i+31:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+31:i] := 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPSLLD (EVEX Versions, xmm/m128)
(KL, VL) = (4, 128), (8, 256), (16, 512)
IF VL = 128
TMP_DEST[127:0] := LOGICAL_LEFT_SHIFT_DWORDS_128b(SRC1[127:0], SRC2)
FI;
IF VL = 256
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC1[255:0], SRC2)
FI;
IF VL = 512
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC1[255:0], SRC2)
TMP_DEST[511:256] := LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC1[511:256], SRC2)
FI;

FOR j := 0 TO KL-1
i := j * 32
IF k1[j] OR *no writemask*
THEN DEST[i+31:i] := TMP_DEST[i+31:i]
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[i+31:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+31:i] := 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPSLLD (ymm, ymm, xmm/m128) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC1, SRC2)
DEST[MAXVL-1:256] := 0;


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-450
VPSLLD (ymm, imm8) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_DWORDS_256b(SRC1, imm8)
DEST[MAXVL-1:256] := 0;

VPSLLD (xmm, xmm, xmm/m128) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_DWORDS(SRC1, SRC2)
DEST[MAXVL-1:128] := 0

VPSLLD (xmm, imm8) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_DWORDS(SRC1, imm8)
DEST[MAXVL-1:128] := 0

PSLLD (xmm, xmm, xmm/m128)
DEST[127:0] := LOGICAL_LEFT_SHIFT_DWORDS(DEST, SRC)
DEST[MAXVL-1:128] (Unmodified)

PSLLD (xmm, imm8)
DEST[127:0] := LOGICAL_LEFT_SHIFT_DWORDS(DEST, imm8)
DEST[MAXVL-1:128] (Unmodified)

VPSLLQ (EVEX Versions, imm8)
(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
i := j * 64
IF k1[j] OR *no writemask* THEN
IF (EVEX.b = 1) AND (SRC1 *is memory*)
THEN DEST[i+63:i] := LOGICAL_LEFT_SHIFT_QWORDS1(SRC1[63:0], imm8)
ELSE DEST[i+63:i] := LOGICAL_LEFT_SHIFT_QWORDS1(SRC1[i+63:i], imm8)
FI;
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[i+63:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+63:i] := 0
FI
FI;
ENDFOR

VPSLLQ (EVEX Versions, xmm/m128)
(KL, VL) = (2, 128), (4, 256), (8, 512)
IF VL = 128
TMP_DEST[127:0] := LOGICAL_LEFT_SHIFT_QWORDS_128b(SRC1[127:0], SRC2)
FI;
IF VL = 256
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC1[255:0], SRC2)
FI;
IF VL = 512
TMP_DEST[255:0] := LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC1[255:0], SRC2)
TMP_DEST[511:256] := LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC1[511:256], SRC2)
FI;

FOR j := 0 TO KL-1
i := j * 64


PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-451
IF k1[j] OR *no writemask*
THEN DEST[i+63:i] := TMP_DEST[i+63:i]
ELSE
IF *merging-masking*                                 ; merging-masking
THEN *DEST[i+63:i] remains unchanged*
ELSE *zeroing-masking*                            ; zeroing-masking
DEST[i+63:i] := 0
FI
FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPSLLQ (ymm, ymm, xmm/m128) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC1, SRC2)
DEST[MAXVL-1:256] := 0;

VPSLLQ (ymm, imm8) - VEX.256 Encoding
DEST[255:0] := LOGICAL_LEFT_SHIFT_QWORDS_256b(SRC1, imm8)
DEST[MAXVL-1:256] := 0;

VPSLLQ (xmm, xmm, xmm/m128) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_QWORDS(SRC1, SRC2)
DEST[MAXVL-1:128] := 0

VPSLLQ (xmm, imm8) - VEX.128 Encoding
DEST[127:0] := LOGICAL_LEFT_SHIFT_QWORDS(SRC1, imm8)
DEST[MAXVL-1:128] := 0

PSLLQ (xmm, xmm, xmm/m128)
DEST[127:0] := LOGICAL_LEFT_SHIFT_QWORDS(DEST, SRC)
DEST[MAXVL-1:128] (Unmodified)

PSLLQ (xmm, imm8)
DEST[127:0] := LOGICAL_LEFT_SHIFT_QWORDS(DEST, imm8)
DEST[MAXVL-1:128] (Unmodified)

Intel C/C++ Compiler Intrinsic Equivalent

VPSLLD __m512i _mm512_slli_epi32(__m512i a, unsigned int imm);
VPSLLD __m512i _mm512_mask_slli_epi32(__m512i s, __mmask16 k, __m512i a, unsigned int imm);
VPSLLD __m512i _mm512_maskz_slli_epi32( __mmask16 k, __m512i a, unsigned int imm);
VPSLLD __m256i _mm256_mask_slli_epi32(__m256i s, __mmask8 k, __m256i a, unsigned int imm);
VPSLLD __m256i _mm256_maskz_slli_epi32( __mmask8 k, __m256i a, unsigned int imm);
VPSLLD __m128i _mm_mask_slli_epi32(__m128i s, __mmask8 k, __m128i a, unsigned int imm);
VPSLLD __m128i _mm_maskz_slli_epi32( __mmask8 k, __m128i a, unsigned int imm);
VPSLLD __m512i _mm512_sll_epi32(__m512i a, __m128i cnt);
VPSLLD __m512i _mm512_mask_sll_epi32(__m512i s, __mmask16 k, __m512i a, __m128i cnt);
VPSLLD __m512i _mm512_maskz_sll_epi32( __mmask16 k, __m512i a, __m128i cnt);
VPSLLD __m256i _mm256_mask_sll_epi32(__m256i s, __mmask8 k, __m256i a, __m128i cnt);
VPSLLD __m256i _mm256_maskz_sll_epi32( __mmask8 k, __m256i a, __m128i cnt);
VPSLLD __m128i _mm_mask_sll_epi32(__m128i s, __mmask8 k, __m128i a, __m128i cnt);
VPSLLD __m128i _mm_maskz_sll_epi32( __mmask8 k, __m128i a, __m128i cnt);
VPSLLQ __m512i _mm512_mask_slli_epi64(__m512i a, unsigned int imm);
VPSLLQ __m512i _mm512_mask_slli_epi64(__m512i s, __mmask8 k, __m512i a, unsigned int imm);
PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical                                                                                           Vol. 2B 4-452
VPSLLQ __m512i _mm512_maskz_slli_epi64( __mmask8 k, __m512i a, unsigned int imm);
VPSLLQ __m256i _mm256_mask_slli_epi64(__m256i s, __mmask8 k, __m256i a, unsigned int imm);
VPSLLQ __m256i _mm256_maskz_slli_epi64( __mmask8 k, __m256i a, unsigned int imm);
VPSLLQ __m128i _mm_mask_slli_epi64(__m128i s, __mmask8 k, __m128i a, unsigned int imm);
VPSLLQ __m128i _mm_maskz_slli_epi64( __mmask8 k, __m128i a, unsigned int imm);
VPSLLQ __m512i _mm512_mask_sll_epi64(__m512i a, __m128i cnt);
VPSLLQ __m512i _mm512_mask_sll_epi64(__m512i s, __mmask8 k, __m512i a, __m128i cnt);
VPSLLQ __m512i _mm512_maskz_sll_epi64( __mmask8 k, __m512i a, __m128i cnt);
VPSLLQ __m256i _mm256_mask_sll_epi64(__m256i s, __mmask8 k, __m256i a, __m128i cnt);
VPSLLQ __m256i _mm256_maskz_sll_epi64( __mmask8 k, __m256i a, __m128i cnt);
VPSLLQ __m128i _mm_mask_sll_epi64(__m128i s, __mmask8 k, __m128i a, __m128i cnt);
VPSLLQ __m128i _mm_maskz_sll_epi64( __mmask8 k, __m128i a, __m128i cnt);
VPSLLW __m512i _mm512_slli_epi16(__m512i a, unsigned int imm);
VPSLLW __m512i _mm512_mask_slli_epi16(__m512i s, __mmask32 k, __m512i a, unsigned int imm);
VPSLLW __m512i _mm512_maskz_slli_epi16( __mmask32 k, __m512i a, unsigned int imm);
VPSLLW __m256i _mm256_mask_slli_epi16(__m256i s, __mmask16 k, __m256i a, unsigned int imm);
VPSLLW __m256i _mm256_maskz_slli_epi16( __mmask16 k, __m256i a, unsigned int imm);
VPSLLW __m128i _mm_mask_slli_epi16(__m128i s, __mmask8 k, __m128i a, unsigned int imm);
VPSLLW __m128i _mm_maskz_slli_epi16( __mmask8 k, __m128i a, unsigned int imm);
VPSLLW __m512i _mm512_sll_epi16(__m512i a, __m128i cnt);
VPSLLW __m512i _mm512_mask_sll_epi16(__m512i s, __mmask32 k, __m512i a, __m128i cnt);
VPSLLW __m512i _mm512_maskz_sll_epi16( __mmask32 k, __m512i a, __m128i cnt);
VPSLLW __m256i _mm256_mask_sll_epi16(__m256i s, __mmask16 k, __m256i a, __m128i cnt);
VPSLLW __m256i _mm256_maskz_sll_epi16( __mmask16 k, __m256i a, __m128i cnt);
VPSLLW __m128i _mm_mask_sll_epi16(__m128i s, __mmask8 k, __m128i a, __m128i cnt);
VPSLLW __m128i _mm_maskz_sll_epi16( __mmask8 k, __m128i a, __m128i cnt);
PSLLW __m64 _mm_slli_pi16 (__m64 m, int count)
PSLLW __m64 _mm_sll_pi16(__m64 m, __m64 count)
(V)PSLLW __m128i _mm_slli_epi16(__m64 m, int count)
(V)PSLLW __m128i _mm_sll_epi16(__m128i m, __m128i count)
VPSLLW __m256i _mm256_slli_epi16 (__m256i m, int count)
VPSLLW __m256i _mm256_sll_epi16 (__m256i m, __m128i count)
PSLLD __m64 _mm_slli_pi32(__m64 m, int count)
PSLLD __m64 _mm_sll_pi32(__m64 m, __m64 count)
(V)PSLLD __m128i _mm_slli_epi32(__m128i m, int count)
(V)PSLLD __m128i _mm_sll_epi32(__m128i m, __m128i count)
VPSLLD __m256i _mm256_slli_epi32 (__m256i m, int count)
VPSLLD __m256i _mm256_sll_epi32 (__m256i m, __m128i count)
PSLLQ __m64 _mm_slli_si64(__m64 m, int count)
PSLLQ __m64 _mm_sll_si64(__m64 m, __m64 count)
(V)PSLLQ __m128i _mm_slli_epi64(__m128i m, int count)
(V)PSLLQ __m128i _mm_sll_epi64(__m128i m, __m128i count)
VPSLLQ __m256i _mm256_slli_epi64 (__m256i m, int count)
VPSLLQ __m256i _mm256_sll_epi64 (__m256i m, __m128i count)

Flags Affected

None.

Exceptions

Other Exceptions

• VEX-encoded instructions: PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical Vol. 2B 4-453 — Syntax with RM/RVM operand encoding (A/C in the operand encoding table), see Table 2-21, “Type 4 Class Exception Conditions.” — Syntax with MI/VMI operand encoding (B/D in the operand encoding table), see Table 2-24, “Type 7 Class Exception Conditions.” • EVEX-encoded VPSLLW (E in the operand encoding table), see Exceptions Type E4NF.nb in Table 2-52, “Type E4NF Class Exception Conditions.” • EVEX-encoded VPSLLD/Q: — Syntax with Mem128 tuple type (G in the operand encoding table), see Exceptions Type E4NF.nb in Table 2-52, “Type E4NF Class Exception Conditions.” — Syntax with Full tuple type (F in the operand encoding table), see Table 2-51, “Type E4 Class Exception Conditions.” PSLLW/PSLLD/PSLLQ—Shift Packed Data Left Logical Vol. 2B 4-454

Numeric Exceptions

None.