 an XMM register. The second source register can be an XMM register or a 128-bit memory location. The destination register is not modified.</p>
<p>VEX.256 encoded version: The first source register is a YMM register. The second source register can be a YMM register or a 256-bit memory location. The destination register is not modified.</p>
<p>Note: In VEX-encoded versions, VEX.vvvv is reserved and must be 1111b, otherwise instructions will #UD.</p>
<h2 id="operation">Operation<a class="anchor" href="#operat