 bits in the data elements are shifted right, the empty high-order bits are cleared (set to 0).</p>
<p>The count values are specified individually in each data element of the second source operand. If the unsigned integer value specified in the respective data element of the second source operand is greater than 31 (for double-words), or 63 (for a quadword), then the destination data element are written with 0.</p>
<p>VEX.128 encoded version: The destination and first source operands are XMM registers. The 