MOVDQU/VMOVDQU8/VMOVDQU16/VMOVDQU32/VMOVDQU64 — Move Unaligned Packed Integer Values

Opcode/Instruction	Op/En	64/32 bit Mode Support	CPUID Feature Flag	Description
F3 0F 6F /r MOVDQU xmm1, xmm2/m128	A	V/V	SSE2	Move unaligned packed integer values from xmm2/m128 to xmm1.
F3 0F 7F /r MOVDQU xmm2/m128, xmm1	B	V/V	SSE2	Move unaligned packed integer values from xmm1 to xmm2/m128.
VEX.128.F3.0F.WIG 6F /r VMOVDQU xmm1, xmm2/m128	A	V/V	AVX	Move unaligned packed integer values from xmm2/m128 to xmm1.
VEX.128.F3.0F.WIG 7F /r VMOVDQU xmm2/m128, xmm1	B	V/V	AVX	Move unaligned packed integer values from xmm1 to xmm2/m128.
VEX.256.F3.0F.WIG 6F /r VMOVDQU ymm1, ymm2/m256	A	V/V	AVX	Move unaligned packed integer values from ymm2/m256 to ymm1.
VEX.256.F3.0F.WIG 7F /r VMOVDQU ymm2/m256, ymm1	B	V/V	AVX	Move unaligned packed integer values from ymm1 to ymm2/m256.
EVEX.128.F2.0F.W0 6F /r VMOVDQU8 xmm1 {k1}{z}, xmm2/m128	C	V/V	AVX512VL AVX512BW	Move unaligned packed byte integer values from xmm2/m128 to xmm1 using writemask k1.
EVEX.256.F2.0F.W0 6F /r VMOVDQU8 ymm1 {k1}{z}, ymm2/m256	C	V/V	AVX512VL AVX512BW	Move unaligned packed byte integer values from ymm2/m256 to ymm1 using writemask k1.
EVEX.512.F2.0F.W0 6F /r VMOVDQU8 zmm1 {k1}{z}, zmm2/m512	C	V/V	AVX512BW	Move unaligned packed byte integer values from zmm2/m512 to zmm1 using writemask k1.
EVEX.128.F2.0F.W0 7F /r VMOVDQU8 xmm2/m128 {k1}{z}, xmm1	D	V/V	AVX512VL AVX512BW	Move unaligned packed byte integer values from xmm1 to xmm2/m128 using writemask k1.
EVEX.256.F2.0F.W0 7F /r VMOVDQU8 ymm2/m256 {k1}{z}, ymm1	D	V/V	AVX512VL AVX512BW	Move unaligned packed byte integer values from ymm1 to ymm2/m256 using writemask k1.
EVEX.512.F2.0F.W0 7F /r VMOVDQU8 zmm2/m512 {k1}{z}, zmm1	D	V/V	AVX512BW	Move unaligned packed byte integer values from zmm1 to zmm2/m512 using writemask k1.
EVEX.128.F2.0F.W1 6F /r VMOVDQU16 xmm1 {k1}{z}, xmm2/m128	C	V/V	AVX512VL AVX512BW	Move unaligned packed word integer values from xmm2/m128 to xmm1 using writemask k1.
EVEX.256.F2.0F.W1 6F /r VMOVDQU16 ymm1 {k1}{z}, ymm2/m256	C	V/V	AVX512VL AVX512BW	Move unaligned packed word integer values from ymm2/m256 to ymm1 using writemask k1.
EVEX.512.F2.0F.W1 6F /r VMOVDQU16 zmm1 {k1}{z}, zmm2/m512	C	V/V	AVX512BW	Move unaligned packed word integer values from zmm2/m512 to zmm1 using writemask k1.
EVEX.128.F2.0F.W1 7F /r VMOVDQU16 xmm2/m128 {k1}{z}, xmm1	D	V/V	AVX512VL AVX512BW	Move unaligned packed word integer values from xmm1 to xmm2/m128 using writemask k1.
EVEX.256.F2.0F.W1 7F /r VMOVDQU16 ymm2/m256 {k1}{z}, ymm1	D	V/V	AVX512VL AVX512BW	Move unaligned packed word integer values from ymm1 to ymm2/m256 using writemask k1.
EVEX.512.F2.0F.W1 7F /r VMOVDQU16 zmm2/m512 {k1}{z}, zmm1	D	V/V	AVX512BW	Move unaligned packed word integer values from zmm1 to zmm2/m512 using writemask k1.
EVEX.128.F3.0F.W0 6F /r VMOVDQU32 xmm1 {k1}{z}, xmm2/mm128	C	V/V	AVX512VL AVX512F	Move unaligned packed doubleword integer values from xmm2/m128 to xmm1 using writemask k1.
EVEX.256.F3.0F.W0 6F /r VMOVDQU32 ymm1 {k1}{z}, ymm2/m256	C	V/V	AVX512VL AVX512F	Move unaligned packed doubleword integer values from ymm2/m256 to ymm1 using writemask k1.
EVEX.512.F3.0F.W0 6F /r VMOVDQU32 zmm1 {k1}{z}, zmm2/m512	C	V/V	AVX512F	Move unaligned packed doubleword integer values from zmm2/m512 to zmm1 using writemask k1.
EVEX.128.F3.0F.W0 7F /r VMOVDQU32 xmm2/m128 {k1}{z}, xmm1	D	V/V	AVX512VL AVX512F	Move unaligned packed doubleword integer values from xmm1 to xmm2/m128 using writemask k1.
EVEX.256.F3.0F.W0 7F /r VMOVDQU32 ymm2/m256 {k1}{z}, ymm1	D	V/V	AVX512VL AVX512F	Move unaligned packed doubleword integer values from ymm1 to ymm2/m256 using writemask k1.
EVEX.512.F3.0F.W0 7F /r VMOVDQU32 zmm2/m512 {k1}{z}, zmm1	D	V/V	AVX512F	Move unaligned packed doubleword integer values from zmm1 to zmm2/m512 using writemask k1.
EVEX.128.F3.0F.W1 6F /r VMOVDQU64 xmm1 {k1}{z}, xmm2/m128	C	V/V	AVX512VL AVX512F	Move unaligned packed quadword integer values from xmm2/m128 to xmm1 using writemask k1.
EVEX.256.F3.0F.W1 6F /r VMOVDQU64 ymm1 {k1}{z}, ymm2/m256	C	V/V	AVX512VL AVX512F	Move unaligned packed quadword integer values from ymm2/m256 to ymm1 using writemask k1.
EVEX.512.F3.0F.W1 6F /r VMOVDQU64 zmm1 {k1}{z}, zmm2/m512	C	V/V	AVX512F	Move unaligned packed quadword integer values from zmm2/m512 to zmm1 using writemask k1.
EVEX.128.F3.0F.W1 7F /r VMOVDQU64 xmm2/m128 {k1}{z}, xmm1	D	V/V	AVX512VL AVX512F	Move unaligned packed quadword integer values from xmm1 to xmm2/m128 using writemask k1.
EVEX.256.F3.0F.W1 7F /r VMOVDQU64 ymm2/m256 {k1}{z}, ymm1	D	V/V	AVX512VL AVX512F	Move unaligned packed quadword integer values from ymm1 to ymm2/m256 using writemask k1.
EVEX.512.F3.0F.W1 7F /r VMOVDQU64 zmm2/m512 {k1}{z}, zmm1	D	V/V	AVX512F	Move unaligned packed quadword integer values from zmm1 to zmm2/m512 using writemask k1.

Instruction Operand Encoding ¶

Op/En	Tuple Type	Operand 1	Operand 2	Operand 3	Operand 4
A	N/A	ModRM:reg (w)	ModRM:r/m (r)	N/A	N/A
B	N/A	ModRM:r/m (w)	ModRM:reg (r)	N/A	N/A
C	Full Mem	ModRM:reg (w)	ModRM:r/m (r)	N/A	N/A
D	Full Mem	ModRM:r/m (w)	ModRM:reg (r)	N/A	N/A

Description ¶

Note: VEX.vvvv and EVEX.vvvv are reserved and must be 1111b otherwise instructions will #UD.

EVEX encoded versions:

Moves 128, 256 or 512 bits of packed byte/word/doubleword/quadword integer values from the source operand (the second operand) to the destination operand (first operand). This instruction can be used to load a vector register from a memory location, to store the contents of a vector register into a memory location, or to move data between two vector registers.

The destination operand is updated at 8-bit (VMOVDQU8), 16-bit (VMOVDQU16), 32-bit (VMOVDQU32), or 64-bit (VMOVDQU64) granularity according to the writemask.

VEX.256 encoded version:

Moves 256 bits of packed integer values from the source operand (second operand) to the destination operand (first operand). This instruction can be used to load a YMM register from a 256-bit memory location, to store the contents of a YMM register into a 256-bit memory location, or to move data between two YMM registers.

Bits (MAXVL-1:256) of the destination register are zeroed.

128-bit versions:

Moves 128 bits of packed integer values from the source operand (second operand) to the destination operand (first operand). This instruction can be used to load an XMM register from a 128-bit memory location, to store the contents of an XMM register into a 128-bit memory location, or to move data between two XMM registers.

128-bit Legacy SSE version: Bits (MAXVL-1:128) of the corresponding destination register remain unchanged.

When the source or destination operand is a memory operand, the operand may be unaligned to any alignment without causing a general-protection exception (#GP) to be generated

VEX.128 encoded version: Bits (MAXVL-1:128) of the destination register are zeroed.

Operation ¶

VMOVDQU8 (EVEX Encoded Versions, Register-Copy Form) ¶

(KL, VL) = (16, 128), (32, 256), (64, 512)
FOR j := 0 TO KL-1
    i := j * 8
    IF k1[j] OR *no writemask*
        THEN DEST[i+7:i] := SRC[i+7:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+7:i] remains unchanged*
                ELSE DEST[i+7:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU8 (EVEX Encoded Versions, Store-Form) ¶

(KL, VL) = (16, 128), (32, 256), (64, 512)
FOR j := 0 TO KL-1
    i := j * 8
    IF k1[j] OR *no writemask*
                THEN DEST[i+7:i] :=
                    SRC[i+7:i]
                ELSE *DEST[i+7:i] remains unchanged*
                        ; merging-masking
        I
            ;
ENDFOR;

VMOVDQU8 (EVEX Encoded Versions, Load-Form) ¶

(KL, VL) = (16, 128), (32, 256), (64, 512)
FOR j := 0 TO KL-1
    i := j * 8
    IF k1[j] OR *no writemask*
        THEN DEST[i+7:i] := SRC[i+7:i]
        ELSE
            IF *merging-masking*
                    ; merging-masking
                THEN *DEST[i+7:i] remains unchanged*
                ELSE DEST[i+7:i] := 0
                    ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU16 (EVEX Encoded Versions, Register-Copy Form) ¶

(KL, VL) = (8, 128), (16, 256), (32, 512)
FOR j := 0 TO KL-1
    i := j * 16
    IF k1[j] OR *no writemask*
        THEN DEST[i+15:i] := SRC[i+15:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+15:i] remains unchanged*
                ELSE DEST[i+15:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU16 (EVEX Encoded Versions, Store-Form) ¶

(KL, VL) = (8, 128), (16, 256), (32, 512)
FOR j := 0 TO KL-1
    i := j * 16
    IF k1[j] OR *no writemask*
                THEN DEST[i+15:i] :=
                    SRC[i+15:i]
                ELSE *DEST[i+15:i] remains unchanged*
                        ; merging-masking
        I
            ;
ENDFOR;

VMOVDQU16 (EVEX Encoded Versions, Load-Form) ¶

(KL, VL) = (8, 128), (16, 256), (32, 512)
FOR j := 0 TO KL-1
    i := j * 16
    IF k1[j] OR *no writemask*
        THEN DEST[i+15:i] := SRC[i+15:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+15:i] remains unchanged*
                ELSE DEST[i+15:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU32 (EVEX Encoded Versions, Register-Copy Form) ¶

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1
    i := j * 32
    IF k1[j] OR *no writemask*
        THEN DEST[i+31:i] := SRC[i+31:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+31:i] remains unchanged*
                ELSE DEST[i+31:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU32 (EVEX Encoded Versions, Store-Form) ¶

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1
    i := j * 32
    IF k1[j] OR *no writemask*
                THEN DEST[i+31:i] :=
                    SRC[i+31:i]
                ELSE *DEST[i+31:i] remains unchanged*
                        ; merging-masking
        I
            ;
ENDFOR;

VMOVDQU32 (EVEX Encoded Versions, Load-Form) ¶

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1
    i := j * 32
    IF k1[j] OR *no writemask*
        THEN DEST[i+31:i] := SRC[i+31:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+31:i] remains unchanged*
                ELSE DEST[i+31:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU64 (EVEX Encoded Versions, Register-Copy Form) ¶

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
    i := j * 64
    IF k1[j] OR *no writemask*
        THEN DEST[i+63:i] := SRC[i+63:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+63:i] remains unchanged*
                ELSE DEST[i+63:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU64 (EVEX Encoded Versions, Store-Form) ¶

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
    i := j * 64
    IF k1[j] OR *no writemask*
        THEN DEST[i+63:i] := SRC[i+63:i]
        ELSE *DEST[i+63:i] remains unchanged*
            ; merging-masking
    FI;
ENDFOR;

VMOVDQU64 (EVEX Encoded Versions, Load-Form) ¶

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
    i := j * 64
    IF k1[j] OR *no writemask*
        THEN DEST[i+63:i] := SRC[i+63:i]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+63:i] remains unchanged*
                ELSE DEST[i+63:i] := 0 ; zeroing-masking
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VMOVDQU (VEX.256 Encoded Version, Load - and Register Copy) ¶

DEST[255:0] := SRC[255:0]
DEST[MAXVL-1:256] := 0

VMOVDQU (VEX.256 Encoded Version, Store-Form) ¶

DEST[255:0] := SRC[255:0]
VMOVDQU (VEX.128 encoded version)
DEST[127:0] := SRC[127:0]
DEST[MAXVL-1:128] := 0

VMOVDQU (128-bit Load- and Register-Copy- Form Legacy SSE Version) ¶

DEST[127:0] := SRC[127:0]
DEST[MAXVL-1:128] (Unmodified)

(V)MOVDQU (128-bit Store-Form Version) ¶

DEST[127:0] := SRC[127:0]

Intel C/C++ Compiler Intrinsic Equivalent ¶

VMOVDQU16 __m512i _mm512_mask_loadu_epi16(__m512i s, __mmask32 k, void * sa);

VMOVDQU16 __m512i _mm512_maskz_loadu_epi16( __mmask32 k, void * sa);

VMOVDQU16 void _mm512_mask_storeu_epi16(void * d, __mmask32 k, __m512i a);

VMOVDQU16 __m256i _mm256_mask_loadu_epi16(__m256i s, __mmask16 k, void * sa);

VMOVDQU16 __m256i _mm256_maskz_loadu_epi16( __mmask16 k, void * sa);

VMOVDQU16 void _mm256_mask_storeu_epi16(void * d, __mmask16 k, __m256i a);

VMOVDQU16 __m128i _mm_mask_loadu_epi16(__m128i s, __mmask8 k, void * sa);

VMOVDQU16 __m128i _mm_maskz_loadu_epi16( __mmask8 k, void * sa);

VMOVDQU16 void _mm_mask_storeu_epi16(void * d, __mmask8 k, __m128i a);

VMOVDQU32 __m512i _mm512_loadu_epi32( void * sa);

VMOVDQU32 __m512i _mm512_mask_loadu_epi32(__m512i s, __mmask16 k, void * sa);

VMOVDQU32 __m512i _mm512_maskz_loadu_epi32( __mmask16 k, void * sa);

VMOVDQU32 void _mm512_storeu_epi32(void * d, __m512i a);

VMOVDQU32 void _mm512_mask_storeu_epi32(void * d, __mmask16 k, __m512i a);

VMOVDQU32 __m256i _mm256_mask_loadu_epi32(__m256i s, __mmask8 k, void * sa);

VMOVDQU32 __m256i _mm256_maskz_loadu_epi32( __mmask8 k, void * sa);

VMOVDQU32 void _mm256_storeu_epi32(void * d, __m256i a);

VMOVDQU32 void _mm256_mask_storeu_epi32(void * d, __mmask8 k, __m256i a);

VMOVDQU32 __m128i _mm_mask_loadu_epi32(__m128i s, __mmask8 k, void * sa);

VMOVDQU32 __m128i _mm_maskz_loadu_epi32( __mmask8 k, void * sa);

VMOVDQU32 void _mm_storeu_epi32(void * d, __m128i a);

VMOVDQU32 void _mm_mask_storeu_epi32(void * d, __mmask8 k, __m128i a);

VMOVDQU64 __m512i _mm512_loadu_epi64( void * sa);

VMOVDQU64 __m512i _mm512_mask_loadu_epi64(__m512i s, __mmask8 k, void * sa);

VMOVDQU64 __m512i _mm512_maskz_loadu_epi64( __mmask8 k, void * sa);

VMOVDQU64 void _mm512_storeu_epi64(void * d, __m512i a);

VMOVDQU64 void _mm512_mask_storeu_epi64(void * d, __mmask8 k, __m512i a);

VMOVDQU64 __m256i _mm256_mask_loadu_epi64(__m256i s, __mmask8 k, void * sa);

VMOVDQU64 __m256i _mm256_maskz_loadu_epi64( __mmask8 k, void * sa);

VMOVDQU64 void _mm256_storeu_epi64(void * d, __m256i a);

VMOVDQU64 void _mm256_mask_storeu_epi64(void * d, __mmask8 k, __m256i a);

VMOVDQU64 __m128i _mm_mask_loadu_epi64(__m128i s, __mmask8 k, void * sa);

VMOVDQU64 __m128i _mm_maskz_loadu_epi64( __mmask8 k, void * sa);

VMOVDQU64 void _mm_storeu_epi64(void * d, __m128i a);

VMOVDQU64 void _mm_mask_storeu_epi64(void * d, __mmask8 k, __m128i a);

VMOVDQU8 __m512i _mm512_mask_loadu_epi8(__m512i s, __mmask64 k, void * sa);

VMOVDQU8 __m512i _mm512_maskz_loadu_epi8( __mmask64 k, void * sa);

VMOVDQU8 void _mm512_mask_storeu_epi8(void * d, __mmask64 k, __m512i a);

VMOVDQU8 __m256i _mm256_mask_loadu_epi8(__m256i s, __mmask32 k, void * sa);

VMOVDQU8 __m256i _mm256_maskz_loadu_epi8( __mmask32 k, void * sa);

VMOVDQU8 void _mm256_mask_storeu_epi8(void * d, __mmask32 k, __m256i a);

VMOVDQU8 __m128i _mm_mask_loadu_epi8(__m128i s, __mmask16 k, void * sa);

VMOVDQU8 __m128i _mm_maskz_loadu_epi8( __mmask16 k, void * sa);

VMOVDQU8 void _mm_mask_storeu_epi8(void * d, __mmask16 k, __m128i a);

MOVDQU __m256i _mm256_loadu_si256 (__m256i * p);

MOVDQU _mm256_storeu_si256(_m256i *p, __m256i a);

MOVDQU __m128i _mm_loadu_si128 (__m128i * p);

MOVDQU _mm_storeu_si128(__m128i *p, __m128i a);

SIMD Floating-Point Exceptions ¶

None.

Other Exceptions ¶

Non-EVEX-encoded instruction, see Table 2-21, “Type 4 Class Exception Conditions.”

EVEX-encoded instruction, see Exceptions Type E4.nb in Table 2-49, “Type E4 Class Exception Conditions.”

Additionally:

#UD	If EVEX.vvvv != 1111B or VEX.vvvv != 1111B.