--- old/src/hotspot/share/runtime/arguments.cpp	2020-08-07 00:44:25.000000000 +0300
+++ new/src/hotspot/share/runtime/arguments.cpp	2020-08-07 00:44:24.000000000 +0300
@@ -4190,8 +4190,23 @@
   if (!UseBiasedLocking) {
     UseOptoBiasInlining = false;
   }
-#endif
 
+  if (!EnableVectorSupport) {
+    if (!FLAG_IS_DEFAULT(EnableVectorReboxing) && EnableVectorReboxing) {
+      warning("Disabling EnableVectorReboxing since EnableVectorSupport is turned off.");
+    }
+    FLAG_SET_DEFAULT(EnableVectorReboxing, false);
+
+    if (!FLAG_IS_DEFAULT(EnableVectorAggressiveReboxing) && EnableVectorAggressiveReboxing) {
+      if (!EnableVectorReboxing) {
+        warning("Disabling EnableVectorAggressiveReboxing since EnableVectorReboxing is turned off.");
+      } else {
+        warning("Disabling EnableVectorAggressiveReboxing since EnableVectorSupport is turned off.");
+      }
+    }
+    FLAG_SET_DEFAULT(EnableVectorAggressiveReboxing, false);
+  }
+#endif // COMPILER2
   return JNI_OK;
 }