VPCONFLICTD/Q—Detect Conflicts Within a Vector of Packed Dword/Qword Values into Dense Memory/ Register

Opcode/Instruction Op/En 64/32 bit Mode Support CPUID Feature Flag Description
EVEX.128.66.0F38.W0 C4 /r VPCONFLICTD xmm1 {k1}{z}, xmm2/m128/m32bcst A V/V AVX512VL AVX512CD Detect duplicate double-word values in xmm2/m128/m32bcst using writemask k1.
EVEX.256.66.0F38.W0 C4 /r VPCONFLICTD ymm1 {k1}{z}, ymm2/m256/m32bcst A V/V AVX512VL AVX512CD Detect duplicate double-word values in ymm2/m256/m32bcst using writemask k1.
EVEX.512.66.0F38.W0 C4 /r VPCONFLICTD zmm1 {k1}{z}, zmm2/m512/m32bcst A V/V AVX512CD Detect duplicate double-word values in zmm2/m512/m32bcst using writemask k1.
EVEX.128.66.0F38.W1 C4 /r VPCONFLICTQ xmm1 {k1}{z}, xmm2/m128/m64bcst A V/V AVX512VL AVX512CD Detect duplicate quad-word values in xmm2/m128/m64bcst using writemask k1.
EVEX.256.66.0F38.W1 C4 /r VPCONFLICTQ ymm1 {k1}{z}, ymm2/m256/m64bcst A V/V AVX512VL AVX512CD Detect duplicate quad-word values in ymm2/m256/m64bcst using writemask k1.
EVEX.512.66.0F38.W1 C4 /r VPCONFLICTQ zmm1 {k1}{z}, zmm2/m512/m64bcst A V/V AVX512CD Detect duplicate quad-word values in zmm2/m512/m64bcst using writemask k1.

Instruction Operand Encoding

Op/En Tuple Type Operand 1 Operand 2 Operand 3 Operand 4
A Full ModRM:reg (w) ModRM:r/m (r) NA NA

Description

Test each dword/qword element of the source operand (the second operand) for equality with all other elements in the source operand closer to the least significant element. Each element’s comparison results form a bit vector, which is then zero extended and written to the destination according to the writemask.

EVEX.512 encoded version: The source operand is a ZMM register, a 512-bit memory location, or a 512-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a ZMM register, conditionally updated using writemask k1.

EVEX.256 encoded version: The source operand is a YMM register, a 256-bit memory location, or a 256-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a YMM register, conditionally updated using writemask k1.

EVEX.128 encoded version: The source operand is a XMM register, a 128-bit memory location, or a 128-bit vector broadcasted from a 32/64-bit memory location. The destination operand is a XMM register, conditionally updated using writemask k1.

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

Operation

VPCONFLICTD

(KL, VL) = (4, 128), (8, 256), (16, 512)

FOR j := 0 TO KL-1

i := j*32

IF MaskBit(j) OR *no writemask*THEN

FOR k := 0 TO j-1

m := k*32

IF ((SRC[i+31:i] = SRC[m+31:m])) THEN

DEST[i+k] := 1

ELSE

DEST[i+k] := 0

FI

ENDFOR

DEST[i+31:i+j] := 0

ELSE

IF *merging-masking* THEN

*DEST[i+31:i] remains unchanged*

ELSE

DEST[i+31:i] := 0

FI

FI

ENDFOR

DEST[MAXVL-1:VL] := 0

VPCONFLICTQ

(KL, VL) = (2, 128), (4, 256), (8, 512)

FOR j := 0 TO KL-1

i := j*64

IF MaskBit(j) OR *no writemask*THEN

FOR k := 0 TO j-1

m := k*64

IF ((SRC[i+63:i] = SRC[m+63:m])) THEN

DEST[i+k] := 1

ELSE

DEST[i+k] := 0

FI

ENDFOR

DEST[i+63:i+j] := 0

ELSE

IF *merging-masking* THEN

*DEST[i+63:i] remains unchanged*

ELSE

DEST[i+63:i] := 0

FI

FI

ENDFOR

DEST[MAXVL-1:VL] := 0

Intel C/C++ Compiler Intrinsic Equivalent

VPCONFLICTD __m512i _mm512_conflict_epi32( __m512i a);

VPCONFLICTD __m512i _mm512_mask_conflict_epi32(__m512i s, __mmask16 m, __m512i a);

VPCONFLICTD __m512i _mm512_maskz_conflict_epi32(__mmask16 m, __m512i a);

VPCONFLICTQ __m512i _mm512_conflict_epi64( __m512i a);

VPCONFLICTQ __m512i _mm512_mask_conflict_epi64(__m512i s, __mmask8 m, __m512i a);

VPCONFLICTQ __m512i _mm512_maskz_conflict_epi64(__mmask8 m, __m512i a);

VPCONFLICTD __m256i _mm256_conflict_epi32( __m256i a);

VPCONFLICTD __m256i _mm256_mask_conflict_epi32(__m256i s, __mmask8 m, __m256i a);

VPCONFLICTD __m256i _mm256_maskz_conflict_epi32(__mmask8 m, __m256i a);

VPCONFLICTQ __m256i _mm256_conflict_epi64( __m256i a);

VPCONFLICTQ __m256i _mm256_mask_conflict_epi64(__m256i s, __mmask8 m, __m256i a);

VPCONFLICTQ __m256i _mm256_maskz_conflict_epi64(__mmask8 m, __m256i a);

VPCONFLICTD __m128i _mm_conflict_epi32( __m128i a);

VPCONFLICTD __m128i _mm_mask_conflict_epi32(__m128i s, __mmask8 m, __m128i a);

VPCONFLICTD __m128i _mm_maskz_conflict_epi32(__mmask8 m, __m128i a);

VPCONFLICTQ __m128i _mm_conflict_epi64( __m128i a);

VPCONFLICTQ __m128i _mm_mask_conflict_epi64(__m128i s, __mmask8 m, __m128i a);

VPCONFLICTQ __m128i _mm_maskz_conflict_epi64(__mmask8 m, __m128i a);

SIMD Floating-Point Exceptions

None

Other Exceptions

EVEX-encoded instruction, see Table 2-50, “Type E4NF Class Exception Conditions”.