VPSHLDV - Concatenate and Variable Shift Packed Data Left Logical

Opcode/ Instruction

Op/ En

64/32 bit Mode Support

CPUID Feature Flag

Description

EVEX.128.66.0F38.W1 70 /r VPSHLDVW xmm1{k1}{z}, xmm2, xmm3/m128

A

V/V

AVX512_VBMI2 AVX512VL

Concatenate xmm1 and xmm2, extract result shifted to the left by value in xmm3/m128 into xmm1.

EVEX.256.66.0F38.W1 70 /r VPSHLDVW ymm1{k1}{z}, ymm2, ymm3/m256

A

V/V

AVX512_VBMI2 AVX512VL

Concatenate ymm1 and ymm2, extract result shifted to the left by value in xmm3/m256 into ymm1.

EVEX.512.66.0F38.W1 70 /r VPSHLDVW zmm1{k1}{z}, zmm2, zmm3/m512

A

V/V

AVX512_VBMI2

Concatenate zmm1 and zmm2, extract result shifted to the left by value in zmm3/m512 into zmm1.

EVEX.128.66.0F38.W0 71 /r VPSHLDVD xmm1{k1}{z}, xmm2, xmm3/m128/m32bcst

B

V/V

AVX512_VBMI2 AVX512VL

Concatenate xmm1 and xmm2, extract result shifted to the left by value in xmm3/m128 into xmm1.

EVEX.256.66.0F38.W0 71 /r VPSHLDVD ymm1{k1}{z}, ymm2, ymm3/m256/m32bcst

B

V/V

AVX512_VBMI2 AVX512VL

Concatenate ymm1 and ymm2, extract result shifted to the left by value in xmm3/m256 into ymm1.

EVEX.512.66.0F38.W0 71 /r VPSHLDVD zmm1{k1}{z}, zmm2, zmm3/m512/m32bcst

B

V/V

AVX512_VBMI2

Concatenate zmm1 and zmm2, extract result shifted to the left by value in zmm3/m512 into zmm1.

EVEX.128.66.0F38.W1 71 /r VPSHLDVQ xmm1{k1}{z}, xmm2, xmm3/m128/m64bcst

B

V/V

AVX512_VBMI2 AVX512VL

Concatenate xmm1 and xmm2, extract result shifted to the left by value in xmm3/m128 into xmm1.

EVEX.256.66.0F38.W1 71 /r VPSHLDVQ ymm1{k1}{z}, ymm2, ymm3/m256/m64bcst

B

V/V

AVX512_VBMI2 AVX512VL

Concatenate ymm1 and ymm2, extract result shifted to the left by value in xmm3/m256 into ymm1.

EVEX.512.66.0F38.W1 71 /r VPSHLDVQ zmm1{k1}{z}, zmm2, zmm3/m512/m64bcst

B

V/V

AVX512_VBMI2

Concatenate zmm1 and zmm2, extract result shifted to the left by value in zmm3/m512 into zmm1.

Instruction Operand Encoding

Op/En

Tuple

Operand 1

Operand 2

Operand 3

Operand 4

A

Full Mem

ModRM:reg (r, w)

EVEX.vvvv (r)

ModRM:r/m (r)

N/A

B

Full

ModRM:reg (r, w)

EVEX.vvvv (r)

ModRM:r/m (r)

N/A

Description

Concatenate packed data, extract result shifted to the left by variable value.

This instruction supports memory fault suppression.

Operation 

FUNCTION concat(a,b):
   IF words:
       d.word[1] := a
       d.word[0] := b
       return d
   ELSE IF dwords:
       q.dword[1] := a
       q.dword[0] := b
       return q
   ELSE IF qwords:
       o.qword[1] := a
       o.qword[0] := b
       return o

VPSHLDVW DEST, SRC2, SRC3 

(KL, VL) = (8, 128), (16, 256), (32, 512)
FOR j := 0 TO KL-1:
   IF MaskBit(j) OR *no writemask*:
       tmp := concat(DEST.word[j], SRC2.word[j]) << (SRC3.word[j] & 15)
       DEST.word[j] := tmp.word[1]
   ELSE IF *zeroing*:
       DEST.word[j] := 0
   *ELSE DEST.word[j] remains unchanged*
DEST[MAX_VL-1:VL] := 0

VPSHLDVD DEST, SRC2, SRC3 

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1:
   IF SRC3 is broadcast memop:
       tsrc3 := SRC3.dword[0]
   ELSE:
       tsrc3 := SRC3.dword[j]
   IF MaskBit(j) OR *no writemask*:
       tmp := concat(DEST.dword[j], SRC2.dword[j]) << (tsrc3 & 31)
       DEST.dword[j] := tmp.dword[1]
   ELSE IF *zeroing*:
       DEST.dword[j] := 0
   *ELSE DEST.dword[j] remains unchanged*
DEST[MAX_VL-1:VL] := 0

VPSHLDVQ DEST, SRC2, SRC3 

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1:
   IF SRC3 is broadcast memop:
       tsrc3 := SRC3.qword[0]
   ELSE:
       tsrc3 := SRC3.qword[j]
   IF MaskBit(j) OR *no writemask*:
       tmp := concat(DEST.qword[j], SRC2.qword[j]) << (tsrc3 & 63)
       DEST.qword[j] := tmp.qword[1]
   ELSE IF *zeroing*:
       DEST.qword[j] := 0
   *ELSE DEST.qword[j] remains unchanged*
DEST[MAX_VL-1:VL] := 0

Intel C/C++ Compiler Intrinsic Equivalent 

VPSHLDVW __m128i _mm_shldv_epi16(__m128i, __m128i, __m128i);
VPSHLDVW __m128i _mm_mask_shldv_epi16(__m128i, __mmask8, __m128i, __m128i);
VPSHLDVW __m128i _mm_maskz_shldv_epi16(__mmask8, __m128i, __m128i, __m128i);
VPSHLDVW __m256i _mm256_shldv_epi16(__m256i, __m256i, __m256i);
VPSHLDVW __m256i _mm256_mask_shldv_epi16(__m256i, __mmask16, __m256i, __m256i);
VPSHLDVW __m256i _mm256_maskz_shldv_epi16(__mmask16, __m256i, __m256i, __m256i);
VPSHLDVQ __m512i  _mm512_shldv_epi64(__m512i, __m512i, __m512i);
VPSHLDVQ __m512i  _mm512_mask_shldv_epi64(__m512i, __mmask8, __m512i, __m512i);
VPSHLDVQ __m512i  _mm512_maskz_shldv_epi64(__mmask8, __m512i, __m512i, __m512i);
VPSHLDVW __m128i  _mm_shldv_epi16(__m128i, __m128i, __m128i);
VPSHLDVW __m128i  _mm_mask_shldv_epi16(__m128i, __mmask8, __m128i, __m128i);
VPSHLDVW __m128i  _mm_maskz_shldv_epi16(__mmask8, __m128i, __m128i, __m128i);
VPSHLDVW __m256i  _mm256_shldv_epi16(__m256i, __m256i, __m256i);
VPSHLDVW __m256i  _mm256_mask_shldv_epi16(__m256i, __mmask16, __m256i, __m256i);
VPSHLDVW __m256i  _mm256_maskz_shldv_epi16(__mmask16, __m256i, __m256i, __m256i);
VPSHLDVW __m512i  _mm512_shldv_epi16(__m512i, __m512i, __m512i);
VPSHLDVW __m512i  _mm512_mask_shldv_epi16(__m512i, __mmask32, __m512i, __m512i);
VPSHLDVW __m512i  _mm512_maskz_shldv_epi16(__mmask32, __m512i, __m512i, __m512i);
VPSHLDVD __m128i  _mm_shldv_epi32(__m128i, __m128i, __m128i);
VPSHLDVD __m128i  _mm_mask_shldv_epi32(__m128i, __mmask8, __m128i, __m128i);
VPSHLDVD __m128i  _mm_maskz_shldv_epi32(__mmask8, __m128i, __m128i, __m128i);
VPSHLDVD __m256i  _mm256_shldv_epi32(__m256i, __m256i, __m256i);
VPSHLDVD __m256i  _mm256_mask_shldv_epi32(__m256i, __mmask8, __m256i, __m256i);
VPSHLDVD __m256i  _mm256_maskz_shldv_epi32(__mmask8, __m256i, __m256i, __m256i);
VPSHLDVD __m512i  _mm512_shldv_epi32(__m512i, __m512i, __m512i);
VPSHLDVD __m512i  _mm512_mask_shldv_epi32(__m512i, __mmask16, __m512i, __m512i);
VPSHLDVD __m512i  _mm512_maskz_shldv_epi32(__mmask16, __m512i, __m512i, __m512i);

SIMD Floating-Point Exceptions

None.

Other Exceptions

See Table 2-49, "Type E4 Class Exception Conditions."