VPMOVQW, VPMOVSQW, VPMOVUSQWs (Intel x86/64 assembly instruction)

모두의 코드
VPMOVQW, VPMOVSQW, VPMOVUSQWs (Intel x86/64 assembly instruction)

작성일 : 2020-09-01 이 글은 650 번 읽혔습니다.

VPMOVQW, VPMOVSQW, VPMOVUSQW

Down Convert QWord to Word

참고 사항

아래 표를 해석하는 방법은 x86-64 명령어 레퍼런스 읽는 법 글을 참조하시기 바랍니다.

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	QVM	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	QVM	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	QVM	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	QVM	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	QVM	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	QVM	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	QVM	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	QVM	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	QVM	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	Operand 1	Operand 2	Operand 3	Operand 4
QVM	ModRM:r/m (w)	ModRM:reg (r)	NA	NA

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 (MAX_VL-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[MAX_VL-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[MAX_VL-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[MAX_VL-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 Exceptions Type E6.

#UD If EVEX.vvvv != 1111B.

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모두의 코드 VPMOVQW, VPMOVSQW, VPMOVUSQWs (Intel x86/64 assembly instruction)