--- /dev/null	2019-01-22 21:46:21.869141545 +0300
+++ new/test/hotspot/jtreg/compiler/intrinsics/string/indexof/TestIndexOfBefore.java	2019-01-22 19:59:56.228235200 +0300
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, BELLSOFT. 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 8215792
+ * @requires os.arch=="aarch64"
+ * @summary check that no data is read before requested start index
+ *
+ * @run main/othervm compiler.intrinsics.string.indexof.TestIndexOfBefore
+ */
+
+package compiler.intrinsics.string.indexof;
+
+public class TestIndexOfBefore {
+    private static final int ITERATIONS = 10000;
+    private static final String PATTERN = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    private static final int EXPECTED_INDEX = 46; // index of 2nd substring in source
+
+    public static void main(String[] args) {
+
+        // Repeat many times to trigger compilation
+        for (int iter = 0; iter < ITERATIONS; iter++) {
+            StringBuilder str1 = new StringBuilder("ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789");
+            for (int startIndex = 1; startIndex < 20; startIndex++) {
+                int index = str1.indexOf(PATTERN, startIndex);
+                if (index != EXPECTED_INDEX) {
+                    System.out.println("FAILED. Expected index " + EXPECTED_INDEX + " but got index " + index + " using startIndex " + startIndex);
+                    System.exit(1);
+                }
+            }
+        }
+        System.out.println("PASSED");
+    }
+}
+