diff test/compiler/5091921/Test6931567.java @ 3345:bad7ecd0b6ed

5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/5091921/Test6931567.java	Wed May 04 13:12:42 2011 -0700
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+/*
+ * 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 6931567
+ * @summary JIT Error (on class file compiled with eclipse) on JVM x64 (but not on x32!).
+ *
+ * @run main Test6931567
+ */
+
+// Should be compiled with javac from JDK1.3 to get bytecode which shows the problem.
+public class Test6931567 {
+
+    public static void main(final String[] args) {
+        booleanInvert(Integer.MAX_VALUE);
+        booleanInvert(Integer.MAX_VALUE - 1);
+    }
+
+    private static void booleanInvert(final int max) {
+        boolean test1 = false;
+        boolean test2 = false;
+
+        for (int i = 0; i < max; i++) {
+            test1 = !test1;
+        }
+
+        for (int i = 0; i < max; i++) {
+            test2 ^= true;
+        }
+
+        if (test1 != test2) {
+            System.out.println("ERROR: Boolean invert\n\ttest1=" + test1
+                    + "\n\ttest2=" + test2);
+            System.exit(97);
+        } else {
+            System.out.println("Passed!");
+        }
+    }
+}
+