PCLMULQDQ—Carry-Less Multiplication QuadwordInstruction Operand EncodingDescriptionPerforms a carry-less multiplication of two quadwords, selected from the first source and second source operand according to the value of the immediate byte. Bits 4 and 0 are used to select which 64-bit half of each operand to use according to Table4-13, other bits of the immediate byte are ignored. The EVEX encoded form of this instruction does not support memory fault suppression.Opcode/InstructionOp/ En64/32 bit Mode SupportCPUID Feature FlagDescription66 0F 3A 44 /r ibPCLMULQDQ xmm1, xmm2/m128, imm8AV/VPCLMULQDQCarry-less multiplication of one quadword of xmm1 by one quadword of xmm2/m128, stores the 128-bit result in xmm1. The imme-diate is used to determine which quadwords of xmm1 and xmm2/m128 should be used.VEX.128.66.0F3A.WIG 44 /r ibVPCLMULQDQ xmm1, xmm2, xmm3/m128, imm8BV/VPCLMULQDQ AVXCarry-less multiplication of one quadword of xmm2 by one quadword of xmm3/m128, stores the 128-bit result in xmm1. The imme-diate is used to determine which quadwords of xmm2 and xmm3/m128 should be used.VEX.256.66.0F3A.WIG 44 /r /ib VPCLMULQDQ ymm1, ymm2, ymm3/m256, imm8BV/VVPCLMULQDQCarry-less multiplication of one quadword of ymm2 by one quadword of ymm3/m256, stores the 128-bit result in ymm1. The imme-diate is used to determine which quadwords of ymm2 and ymm3/m256 should be used.EVEX.128.66.0F3A.WIG 44 /r /ibVPCLMULQDQ xmm1, xmm2, xmm3/m128, imm8CV/VVPCLMULQDQAVX512VLCarry-less multiplication of one quadword of xmm2 by one quadword of xmm3/m128, stores the 128-bit result in xmm1. The imme-diate is used to determine which quadwords of xmm2 and xmm3/m128 should be used.EVEX.256.66.0F3A.WIG 44 /r /ibVPCLMULQDQ ymm1, ymm2, ymm3/m256, imm8CV/VVPCLMULQDQAVX512VLCarry-less multiplication of one quadword of ymm2 by one quadword of ymm3/m256, stores the 128-bit result in ymm1. The imme-diate is used to determine which quadwords of ymm2 and ymm3/m256 should be used.EVEX.512.66.0F3A.WIG 44 /r /ibVPCLMULQDQ zmm1, zmm2, zmm3/m512, imm8CV/VVPCLMULQDQAVX512FCarry-less multiplication of one quadword of zmm2 by one quadword of zmm3/m512, stores the 128-bit result in zmm1. The imme-diate is used to determine which quadwords of zmm2 and zmm3/m512 should be used.Op/EnTupleOperand 1Operand2Operand3Operand4ANAModRM:reg (r, w)ModRM:r/m (r)imm8NABNAModRM:reg (w)VEX.vvvv (r)ModRM:r/m (r)imm8CFull MemModRM:reg (w)EVEX.vvvv (r)ModRM:r/m (r)imm8 (r)
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