diff test/compiler/7052494/Test7052494.java @ 3782:aacaff365100

7052494: Eclipse test fails on JDK 7 b142 Summary: Keep 'ne' test in Counted loop when we can't guarantee during compilation that init < limit. Reviewed-by: never
author kvn
date Mon, 20 Jun 2011 16:45:35 -0700
parents
children 3fbb609d9e96
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7052494/Test7052494.java	Mon Jun 20 16:45:35 2011 -0700
@@ -0,0 +1,162 @@
+/*
+ * 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 7052494
+ * @summary Eclipse test fails on JDK 7 b142
+ *
+ * @run main/othervm -Xbatch Test7052494
+ */
+
+
+public class Test7052494 {
+
+  static int test1(int i, int limit) {
+    int result = 0;
+    while (i++ != 0) {
+      if (result >= limit)
+        break;
+      result = i*2;
+    }
+    return result;
+  }
+
+  static int test2(int i, int limit) {
+    int result = 0;
+    while (i-- != 0) {
+      if (result <= limit)
+        break;
+      result = i*2;
+    }
+    return result;
+  }
+
+  static void test3(int i, int limit, int arr[]) {
+    while (i++ != 0) {
+      if (arr[i-1] >= limit)
+        break;
+      arr[i] = i*2;
+    }
+  }
+
+  static void test4(int i, int limit, int arr[]) {
+    while (i-- != 0) {
+      if (arr[arr.length + i + 1] <= limit)
+        break;
+      arr[arr.length + i] = i*2;
+    }
+  }
+
+  // Empty loop rolls through MAXINT if i > 0
+  static int test5(int i) {
+    int result = 0;
+    while (i++ != 0) {
+      result = i*2;
+    }
+    return result;
+  }
+
+  // Empty loop rolls through MININT if i < 0
+  static int test6(int i) {
+    int result = 0;
+    while (i-- != 0) {
+      result = i*2;
+    }
+    return result;
+  }
+
+  public static void main(String [] args) {
+    boolean failed = false;
+    int[] arr = new int[8];
+    int[] ar3 = { 0, 0, 4, 6, 8, 10, 0, 0 };
+    int[] ar4 = { 0, 0, 0, -10, -8, -6, -4, 0 };
+    for (int i = 0; i < 11000; i++) {
+      int k = test1(1, 10);
+      if (k != 10) {
+        System.out.println("FAILED: " + k + " != 10");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test2(-1, -10);
+      if (k != -10) {
+        System.out.println("FAILED: " + k + " != -10");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      java.util.Arrays.fill(arr, 0);
+      test3(1, 10, arr);
+      if (!java.util.Arrays.equals(arr,ar3)) {
+        System.out.println("FAILED: arr = { " + arr[0] + ", "
+                                              + arr[1] + ", "
+                                              + arr[2] + ", "
+                                              + arr[3] + ", "
+                                              + arr[4] + ", "
+                                              + arr[5] + ", "
+                                              + arr[6] + ", "
+                                              + arr[7] + " }");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      java.util.Arrays.fill(arr, 0);
+      test4(-1, -10, arr);
+      if (!java.util.Arrays.equals(arr,ar4)) {
+        System.out.println("FAILED: arr = { " + arr[0] + ", "
+                                              + arr[1] + ", "
+                                              + arr[2] + ", "
+                                              + arr[3] + ", "
+                                              + arr[4] + ", "
+                                              + arr[5] + ", "
+                                              + arr[6] + ", "
+                                              + arr[7] + " }");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test5(1);
+      if (k != 0) {
+        System.out.println("FAILED: " + k + " != 0");
+        failed = true;
+        break;
+      }
+    }
+    for (int i = 0; i < 11000; i++) {
+      int k = test6(-1);
+      if (k != 0) {
+        System.out.println("FAILED: " + k + " != 0");
+        failed = true;
+        break;
+      }
+    }
+    if (failed)
+      System.exit(97);
+  }
+}