--- old/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp	2020-02-28 12:50:40.000000000 +0300
+++ new/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp	2020-02-28 12:50:39.000000000 +0300
@@ -4860,6 +4860,8 @@
   Register ch1 = rscratch1;
   Register result_tmp = rscratch2;
 
+  cbz(cnt1, NOMATCH);
+
   cmp(cnt1, (u1)4);
   br(LT, DO1_SHORT);