test/hotspot/jtreg/compiler/loopstripmining/LoadDependsOnIfIdenticalToLoopExit.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/loopstripmining/LoadDependsOnIfIdenticalToLoopExit.java Wed Sep 04 16:39:12 2019 +0200
@@ -0,0 +1,64 @@
+/*
+ * 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 8229450
+ * @summary shared an identical bool node with a strip-mined loop
+ *
+ * @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:LoopMaxUnroll=0 -XX:CompileCommand=dontinline,LoadDependsOnIfIdenticalToLoopExit::not_inlined -XX:CompileCommand=compileonly,LoadDependsOnIfIdenticalToLoopExit::test1 LoadDependsOnIfIdenticalToLoopExit
+ *
+ */
+
+public class LoadDependsOnIfIdenticalToLoopExit {
+ public static void main(String[] args) {
+ for (int i = 0; i < 20_000; i++) {
+ test1(false, false);
+ test1(true, true);
+ }
+ }
+
+ private static int test1(boolean flag1, boolean flag2) {
+ int res = 1;
+ int[] array = new int[10];
+ not_inlined(array);
+ int i;
+ for (i = 0; i < 2000; i++) {
+ res *= i;
+ }
+
+ if (flag1) {
+ if (flag2) {
+ res++;
+ }
+ }
+
+ if (i >= 2000) {
+ res *= array[0];
+ }
+ return res;
+ }
+
+ private static void not_inlined(int[] array) {
+ }
+}