--- a/src/hotspot/cpu/aarch64/aarch64.ad	Fri Aug 10 17:07:44 2018 +0800
+++ b/src/hotspot/cpu/aarch64/aarch64.ad	Fri Aug 10 14:22:49 2018 +0300
@@ -14471,7 +14471,7 @@
   format %{ "cmp   $op1, $op2\t# overflow check long" %}
   ins_cost(INSN_COST);
   ins_encode %{
-    __ cmp($op1$$Register, $op2$$constant);
+    __ subs(zr, $op1$$Register, $op2$$constant);
   %}
 
   ins_pipe(icmp_reg_imm);