re form) instruction version, VEX.vvvv is reserved and must be 1111b, otherwise instruction will #UD.</p>
<p>Note: For the “VMOVSD xmm1, m64” (memory load form) instruction version, VEX.vvvv is reserved and must be 1111b otherwise instruction will #UD.</p>
<p>VEX encoded instruction syntax supports two source operands and a destination operand if ModR/M.mod field is 11B. VEX.vvvv is used to encode the first source operand (the second operand). The low 128 bits of the destination operand stores the resul