ion: The first source and destination operands are YMM registers. The second source operand can be an YMM register or a 256-bit memory location.</p>
<p>Note: VEX.L must be 0, otherwise the instruction will #UD.</p>
<h2 id="operation">Operation<a class="anchor" href="#operation">
			¶
		</a></h2>
<h3 id="phsubw--with-64-bit-operands-">PHSUBW (with 64-bit operands)<a class="anchor" href="#phsubw--with-64-bit-operands-">
			¶
		</a></h3>
<pre>mm1[15-0] = mm1[15-0] - mm1[31-16];
mm1[31-16] = mm1[47-32] - mm1[