8059002: 8058744 needs a test case

Summary: Added a test case the UnsafeRawOp intrinsics
Reviewed-by: kvn

test/compiler/unsafe/UnsafeRaw.java

+/*
+ * Copyright (c) 2014, 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 8058744
+ * @summary Invalid pattern-matching of address computations in raw unsafe
+ * @library /testlibrary
+ * @run main/othervm -Xbatch UnsafeRaw
+ */
+
+import com.oracle.java.testlibrary.Utils;
+import java.util.Random;
+
+public class UnsafeRaw {
+  public static class Tests {
+    public static int int_index(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
+      return unsafe.getInt(base + (index << 2));
+    }
+    public static int long_index(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
+      return unsafe.getInt(base + (index << 2));
+    }
+    public static int int_index_back_ashift(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
+      return unsafe.getInt(base + (index >> 2));
+    }
+    public static int int_index_back_lshift(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
+      return unsafe.getInt(base + (index >>> 2));
+    }
+    public static int long_index_back_ashift(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
+      return unsafe.getInt(base + (index >> 2));
+    }
+    public static int long_index_back_lshift(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
+      return unsafe.getInt(base + (index >>> 2));
+    }
+    public static int int_const_12345678_index(sun.misc.Unsafe unsafe, long base) throws Exception {
+      int idx4 = 0x12345678;
+      return unsafe.getInt(base + idx4);
+    }
+    public static int long_const_1234567890abcdef_index(sun.misc.Unsafe unsafe, long base) throws Exception {
+      long idx5 = 0x1234567890abcdefL;
+      return unsafe.getInt(base + idx5);
+    }
+    public static int int_index_mul(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
+      return unsafe.getInt(base + (index * 4));
+    }
+    public static int long_index_mul(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
+      return unsafe.getInt(base + (index * 4));
+    }
+    public static int int_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
+      return unsafe.getInt(base + (index * 16));
+    }
+    public static int long_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
+      return unsafe.getInt(base + (index * 16));
+    }
+  }
+
+  public static void main(String[] args) throws Exception {
+    sun.misc.Unsafe unsafe = Utils.getUnsafe();
+    final int array_size = 128;
+    final int element_size = 4;
+    final int magic = 0x12345678;
+
+    Random rnd = new Random();
+
+    long array = unsafe.allocateMemory(array_size * element_size); // 128 ints
+    long addr = array + array_size * element_size / 2; // something in the middle to work with
+    unsafe.putInt(addr, magic);
+    for (int j = 0; j < 100000; j++) {
+       if (Tests.int_index(unsafe, addr, 0) != magic) throw new Exception();
+       if (Tests.long_index(unsafe, addr, 0) != magic) throw new Exception();
+       if (Tests.int_index_mul(unsafe, addr, 0) != magic) throw new Exception();
+       if (Tests.long_index_mul(unsafe, addr, 0) != magic) throw new Exception();
+       {
+         long idx1 = rnd.nextLong();
+         long addr1 = addr - (idx1 << 2);
+         if (Tests.long_index(unsafe, addr1, idx1) != magic) throw new Exception();
+       }
+       {
+         long idx2 = rnd.nextLong();
+         long addr2 = addr - (idx2 >> 2);
+         if (Tests.long_index_back_ashift(unsafe, addr2, idx2) != magic) throw new Exception();
+       }
+       {
+         long idx3 = rnd.nextLong();
+         long addr3 = addr - (idx3 >>> 2);
+         if (Tests.long_index_back_lshift(unsafe, addr3, idx3) != magic) throw new Exception();
+       }
+       {
+         long idx4 = 0x12345678;
+         long addr4 = addr - idx4;
+         if (Tests.int_const_12345678_index(unsafe, addr4) != magic) throw new Exception();
+       }
+       {
+         long idx5 = 0x1234567890abcdefL;
+         long addr5 = addr - idx5;
+         if (Tests.long_const_1234567890abcdef_index(unsafe, addr5) != magic) throw new Exception();
+       }
+       {
+         int idx6 = rnd.nextInt();
+         long addr6 = addr - (idx6 >> 2);
+         if (Tests.int_index_back_ashift(unsafe, addr6, idx6) != magic) throw new Exception();
+       }
+       {
+         int idx7 = rnd.nextInt();
+         long addr7 = addr - (idx7 >>> 2);
+         if (Tests.int_index_back_lshift(unsafe, addr7, idx7) != magic) throw new Exception();
+       }
+       {
+         int idx8 = rnd.nextInt();
+         long addr8 = addr - (idx8 * 16);
+         if (Tests.int_index_mul_scale_16(unsafe, addr8, idx8) != magic) throw new Exception();
+       }
+       {
+         long idx9 = rnd.nextLong();
+         long addr9 = addr - (idx9 * 16);
+         if (Tests.long_index_mul_scale_16(unsafe, addr9, idx9) != magic) throw new Exception();
+       }
+    }
+  }
+}