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) NA
B Full ModRM:reg (r, w) EVEX.vvvv (r) ModRM:r/m (r) NA

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 Type E4.