r/m32 and write result to r32.</td></tr>
<tr>
<td>
<p>VEX.NDD.LZ.0F38.W1 F3 /1</p>
<p>BLSR r64, r/m64</p></td>
<td>VM</td>
<td>V/N.E.</td>
<td>BMI1</td>
<td>Reset lowest set bit of r/m64, keep all other bits of r/m64 and write result to r64.</td></tr></table>
<h3>Instruction Operand Encoding</h3>
<table>
<tr>
<td>Op/En</td>
<td>Operand 1</td>
<td>Operand 2</td>
<td>Operand 3</td>
<td>Operand 4</td></tr>
<tr>
<td>VM</td>
<td>VEX.vvvv (w)</td>
<td>ModRM:r/m (r)</td>
<td>NA</td>
<td>NA</td></tr></table>
<h2>De