# VPMOVQW/VPMOVSQW/VPMOVUSQW — Down Convert QWord to Word

Opcode/Instruction | Op / En | 64/32 bit Mode Support | CPUID Feature Flag | Description
--- | --- | --- | --- | ---
EVEX.128.F3.0F38.W0 34 /r VPMOVQW xmm1/m32 {k1}{z}, xmm2 | A | V/V | AVX512VL AVX512F | Converts 2 packed quad-word integers from xmm2 into 2 packed word integers in xmm1/m32 with truncation under writemask k1.
EVEX.128.F3.0F38.W0 24 /r VPMOVSQW xmm1/m32 {k1}{z}, xmm2 | A | V/V | AVX512VL AVX512F | Converts 8 packed signed quad-word integers from zmm2 into 8 packed signed word integers in xmm1/m32 using signed saturation under writemask k1.
EVEX.128.F3.0F38.W0 14 /r VPMOVUSQW xmm1/m32 {k1}{z}, xmm2 | A | V/V | AVX512VL AVX512F | Converts 2 packed unsigned quad-word integers from xmm2 into 2 packed unsigned word integers in xmm1/m32 using unsigned saturation under writemask k1.
EVEX.256.F3.0F38.W0 34 /r VPMOVQW xmm1/m64 {k1}{z}, ymm2 | A | V/V | AVX512VL AVX512F | Converts 4 packed quad-word integers from ymm2 into 4 packed word integers in xmm1/m64 with truncation under writemask k1.
EVEX.256.F3.0F38.W0 24 /r VPMOVSQW xmm1/m64 {k1}{z}, ymm2 | A | V/V | AVX512VL AVX512F | Converts 4 packed signed quad-word integers from ymm2 into 4 packed signed word integers in xmm1/m64 using signed saturation under writemask k1.
EVEX.256.F3.0F38.W0 14 /r VPMOVUSQW xmm1/m64 {k1}{z}, ymm2 | A | V/V | AVX512VL AVX512F | Converts 4 packed unsigned quad-word integers from ymm2 into 4 packed unsigned word integers in xmm1/m64 using unsigned saturation under writemask k1.
EVEX.512.F3.0F38.W0 34 /r VPMOVQW xmm1/m128 {k1}{z}, zmm2 | A | V/V | AVX512F | Converts 8 packed quad-word integers from zmm2 into 8 packed word integers in xmm1/m128 with truncation under writemask k1.
EVEX.512.F3.0F38.W0 24 /r VPMOVSQW xmm1/m128 {k1}{z}, zmm2 | A | V/V | AVX512F | Converts 8 packed signed quad-word integers from zmm2 into 8 packed signed word integers in xmm1/m128 using signed saturation under writemask k1.
EVEX.512.F3.0F38.W0 14 /r VPMOVUSQW xmm1/m128 {k1}{z}, zmm2 | A | V/V | AVX512F | Converts 8 packed unsigned quad-word integers from zmm2 into 8 packed unsigned word integers in xmm1/m128 using unsigned saturation under writemask k1.

## Instruction Operand Encoding ¶

Op/En | Tuple Type | Operand 1 | Operand 2 | Operand 3 | Operand 4
--- | --- | --- | --- | --- | ---
A | Quarter Mem | ModRM:r/m (w) | ModRM:reg (r) | N/A | N/A

### Description ¶

VPMOVQW down converts 64-bit integer elements in the source operand (the second operand) into packed words using truncation. VPMOVSQW converts signed 64-bit integers into packed signed words using signed saturation. VPMOVUSQW convert unsigned quad-word values into unsigned word values using unsigned saturation.

The source operand is a ZMM/YMM/XMM register. The destination operand is a XMM register or a 128/64/32-bit memory location.

Down-converted word elements are written to the destination operand (the first operand) from the least-significant word. Word elements of the destination operand are updated according to the writemask. Bits (MAXVL-1:128/64/32) of the register destination are zeroed.

EVEX.vvvv is reserved and must be 1111b otherwise instructions will #UD.

### Operation ¶

#### VPMOVQW instruction (EVEX encoded versions) when dest is a register ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := TruncateQuadWordToWord (SRC[m+63:m])
            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/4] := 0;

#### VPMOVQW instruction (EVEX encoded versions) when dest is memory ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := TruncateQuadWordToWord (SRC[m+63:m])
            ELSE
                *DEST[i+15:i] remains unchanged* ; merging-masking
        FI;
    ENDFOR

#### VPMOVSQW instruction (EVEX encoded versions) when dest is a register ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := SaturateSignedQuadWordToWord (SRC[m+63:m])
            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/4] := 0;

#### VPMOVSQW instruction (EVEX encoded versions) when dest is memory ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := SaturateSignedQuadWordToWord (SRC[m+63:m])
            ELSE
                *DEST[i+15:i] remains unchanged* ; merging-masking
        FI;
    ENDFOR

#### VPMOVUSQW instruction (EVEX encoded versions) when dest is a register ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := SaturateUnsignedQuadWordToWord (SRC[m+63:m])
            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/4] := 0;

#### VPMOVUSQW instruction (EVEX encoded versions) when dest is memory ¶

    (KL, VL) = (2, 128), (4, 256), (8, 512)
    FOR j := 0 TO KL-1
        i := j * 16
        m := j * 64
        IF k1[j] OR *no writemask*
            THEN DEST[i+15:i] := SaturateUnsignedQuadWordToWord (SRC[m+63:m])
            ELSE
                *DEST[i+15:i] remains unchanged* ; merging-masking
        FI;
    ENDFOR

### Intel C/C++ Compiler Intrinsic Equivalents ¶

    VPMOVQW __m128i _mm512_cvtepi64_epi16( __m512i a);

    VPMOVQW __m128i _mm512_mask_cvtepi64_epi16(__m128i s, __mmask8 k, __m512i a);

    VPMOVQW __m128i _mm512_maskz_cvtepi64_epi16( __mmask8 k, __m512i a);

    VPMOVQW void _mm512_mask_cvtepi64_storeu_epi16(void * d, __mmask8 k, __m512i a);

    VPMOVSQW __m128i _mm512_cvtsepi64_epi16( __m512i a);

    VPMOVSQW __m128i _mm512_mask_cvtsepi64_epi16(__m128i s, __mmask8 k, __m512i a);

    VPMOVSQW __m128i _mm512_maskz_cvtsepi64_epi16( __mmask8 k, __m512i a);

    VPMOVSQW void _mm512_mask_cvtsepi64_storeu_epi16(void * d, __mmask8 k, __m512i a);

    VPMOVUSQW __m128i _mm512_cvtusepi64_epi16( __m512i a);

    VPMOVUSQW __m128i _mm512_mask_cvtusepi64_epi16(__m128i s, __mmask8 k, __m512i a);

    VPMOVUSQW __m128i _mm512_maskz_cvtusepi64_epi16( __mmask8 k, __m512i a);

    VPMOVUSQW void _mm512_mask_cvtusepi64_storeu_epi16(void * d, __mmask8 k, __m512i a);

    VPMOVUSQD __m128i _mm256_cvtusepi64_epi32(__m256i a);

    VPMOVUSQD __m128i _mm256_mask_cvtusepi64_epi32(__m128i a, __mmask8 k, __m256i b);

    VPMOVUSQD __m128i _mm256_maskz_cvtusepi64_epi32( __mmask8 k, __m256i b);

    VPMOVUSQD void _mm256_mask_cvtusepi64_storeu_epi32(void * , __mmask8 k, __m256i b);

    VPMOVUSQD __m128i _mm_cvtusepi64_epi32(__m128i a);

    VPMOVUSQD __m128i _mm_mask_cvtusepi64_epi32(__m128i a, __mmask8 k, __m128i b);

    VPMOVUSQD __m128i _mm_maskz_cvtusepi64_epi32( __mmask8 k, __m128i b);

    VPMOVUSQD void _mm_mask_cvtusepi64_storeu_epi32(void * , __mmask8 k, __m128i b);

    VPMOVSQD __m128i _mm256_cvtsepi64_epi32(__m256i a);

    VPMOVSQD __m128i _mm256_mask_cvtsepi64_epi32(__m128i a, __mmask8 k, __m256i b);

    VPMOVSQD __m128i _mm256_maskz_cvtsepi64_epi32( __mmask8 k, __m256i b);

    VPMOVSQD void _mm256_mask_cvtsepi64_storeu_epi32(void * , __mmask8 k, __m256i b);

    VPMOVSQD __m128i _mm_cvtsepi64_epi32(__m128i a);

    VPMOVSQD __m128i _mm_mask_cvtsepi64_epi32(__m128i a, __mmask8 k, __m128i b);

    VPMOVSQD __m128i _mm_maskz_cvtsepi64_epi32( __mmask8 k, __m128i b);

    VPMOVSQD void _mm_mask_cvtsepi64_storeu_epi32(void * , __mmask8 k, __m128i b);

    VPMOVQD __m128i _mm256_cvtepi64_epi32(__m256i a);

    VPMOVQD __m128i _mm256_mask_cvtepi64_epi32(__m128i a, __mmask8 k, __m256i b);

    VPMOVQD __m128i _mm256_maskz_cvtepi64_epi32( __mmask8 k, __m256i b);

    VPMOVQD void _mm256_mask_cvtepi64_storeu_epi32(void * , __mmask8 k, __m256i b);

    VPMOVQD __m128i _mm_cvtepi64_epi32(__m128i a);

    VPMOVQD __m128i _mm_mask_cvtepi64_epi32(__m128i a, __mmask8 k, __m128i b);

    VPMOVQD __m128i _mm_maskz_cvtepi64_epi32( __mmask8 k, __m128i b);

    VPMOVQD void _mm_mask_cvtepi64_storeu_epi32(void * , __mmask8 k, __m128i b);

### SIMD Floating-Point Exceptions ¶

None.

### Other Exceptions ¶

EVEX-encoded instruction, see Table 2-53, “Type E6 Class Exception Conditions.”

Additionally:

#UD | If EVEX.vvvv != 1111B.