hotspot/test/compiler/c2/Test6885584.java
changeset 40059 c2304140ed64
parent 27699 9913b19c0948
child 41705 332239c052cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/c2/Test6885584.java	Tue Jul 12 18:24:48 2016 +0300
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2009, 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 6885584
+ * @summary A particular class structure causes large allocation spike for jit
+ *
+ * @run main/othervm -Xbatch compiler.c2.Test6885584
+ */
+
+package compiler.c2;
+
+public class Test6885584 {
+   static private int i1;
+   static private int i2;
+   static private int i3;
+
+    static int limit = Integer.MAX_VALUE - 8;
+
+   public static void main(String args[]) {
+       // Run long enough to trigger an OSR
+       for(int j = 200000; j != 0; j--) {
+       }
+
+       // This must reference a field
+       i1 = i2;
+
+       // The resource leak is roughly proportional to this initial value
+       for(int k = Integer.MAX_VALUE - 1; k != 0; k--) {
+           // Make sure the body does some work
+           if(i2 > i3)i1 = k;
+           if (k <= limit) break;
+       }
+   }
+
+}