--- old/src/hotspot/share/opto/c2compiler.cpp	2020-08-13 11:59:10.131648439 +0300
+++ new/src/hotspot/share/opto/c2compiler.cpp	2020-08-13 11:59:10.023650553 +0300
@@ -469,6 +469,12 @@
   case vmIntrinsics::_floor:
     if (!Matcher::match_rule_supported(Op_RoundDoubleMode)) return false;
     break;
+  case vmIntrinsics::_dsignum:
+    if (!Matcher::match_rule_supported(Op_SignumD)) return false;
+    break;
+  case vmIntrinsics::_fsignum:
+    if (!Matcher::match_rule_supported(Op_SignumF)) return false;
+    break;
   case vmIntrinsics::_hashCode:
   case vmIntrinsics::_identityHashCode:
   case vmIntrinsics::_getClass: