--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/loopstripmining/TestConservativeAntiDep.java	Wed Oct 02 17:32:08 2019 +0200
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8231550
+ * @summary C2: ShouldNotReachHere() in verify_strip_mined_scheduling
+ *
+ * @run main/othervm -XX:-BackgroundCompilation -XX:LoopMaxUnroll=0 TestConservativeAntiDep
+ *
+ */
+
+import java.lang.reflect.Array;
+import java.util.Arrays;
+
+public class TestConservativeAntiDep {
+    private static long longField;
+
+    public static void main(String[] args) throws InstantiationException, IllegalAccessException {
+        for (int i = 0; i < 20_000; i++) {
+            test1(A.class);
+            test2(B.class);
+        }
+    }
+
+    private static int test1(Class klass) {
+        Object[] in = (Object[])Array.newInstance(klass, 100);
+
+        Object[] o = in;
+        int v = 1;
+        // CountedLoop has control dependent CastPP
+        for (int i = 0; i < 100 ; i++) {
+            longField = i; // sunk in outer strip mined loop
+            o = (A[]) o;
+            v *= 2;
+        }
+
+        // LoadRange cannot float higher than CountedLoop (because of
+        // CastPP) and is found anti-dependent with long store so
+        // scheduled in outer strip mined loop
+        return v + o.length;
+    }
+
+    private static int test2(Class klass) throws IllegalAccessException, InstantiationException {
+        A in = (A)klass.newInstance();
+
+        A o = in;
+        int v = 1;
+        // CountedLoop has control dependent CastPP
+        for (int i = 0; i < 100 ; i++) {
+            longField = i;  // sunk in outer strip mined loop
+            o = (B) o;
+            v *= 2;
+        }
+
+        // Load cannot float higher than CountedLoop (because of
+        // CastPP) and is found anti-dependent with long store so
+        // scheduled in outer strip mined loop
+        return v + o.intField;
+    }
+
+    private static class A {
+        int intField;
+        public A() {}
+    }
+
+    private static class B extends A {
+        public B() {}
+    }
+}