--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/c2/Test6959129.java Tue Jul 12 18:24:48 2016 +0300
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. 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 6959129
+ * @summary COMPARISON WITH INTEGER.MAX_INT DOES NOT WORK CORRECTLY IN THE CLIENT VM.
+ *
+ * @run main/othervm -ea compiler.c2.Test6959129
+ */
+
+package compiler.c2;
+
+public class Test6959129 {
+
+ public static void main(String[] args) {
+ long start = System.currentTimeMillis();
+ int min = Integer.MAX_VALUE-30000;
+ int max = Integer.MAX_VALUE;
+ long maxmoves = 0;
+ try {
+ maxmoves = maxMoves(min, max);
+ } catch (AssertionError e) {
+ System.out.println("Passed");
+ System.exit(95);
+ }
+ System.out.println("maxMove:" + maxmoves);
+ System.out.println("FAILED");
+ System.exit(97);
+ }
+ /**
+ * Imperative implementation that returns the length hailstone moves
+ * for a given number.
+ */
+ public static long hailstoneLengthImp(long n) {
+ long moves = 0;
+ while (n != 1) {
+ assert n > 1;
+ if (isEven(n)) {
+ n = n / 2;
+ } else {
+ n = 3 * n + 1;
+ }
+ ++moves;
+ }
+ return moves;
+ }
+
+ private static boolean isEven(long n) {
+ return n % 2 == 0;
+ }
+
+ /**
+ * Returns the maximum length of the hailstone sequence for numbers
+ * between min to max.
+ *
+ * For rec1 - Assume that min is bigger than max.
+ */
+ public static long maxMoves(int min, int max) {
+ long maxmoves = 0;
+ for (int n = min; n <= max; n++) {
+ if ((n & 1023) == 0) System.out.println(n);
+ long moves = hailstoneLengthImp(n);
+ if (moves > maxmoves) {
+ maxmoves = moves;
+ }
+ }
+ return maxmoves;
+ }
+}
+