Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/compiler/intrinsics/mathexact/GVNTest.java	Tue Nov 12 14:52:48 2013 +0100
     1.3 @@ -0,0 +1,60 @@
     1.4 +/*
     1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 + * @test
    1.29 + * @bug 8028207
    1.30 + * @summary Verify that GVN doesn't mess up the two addExacts
    1.31 + * @compile GVNTest.java
    1.32 + * @run main GVNTest
    1.33 + *
    1.34 + */
    1.35 +
    1.36 +public class GVNTest {
    1.37 +  public static int result = 0;
    1.38 +  public static int value = 93;
    1.39 +  public static void main(String[] args) {
    1.40 +    for (int i = 0; i < 50000; ++i) {
    1.41 +      result = runTest(value + i);
    1.42 +      result = runTest(value + i);
    1.43 +      result = runTest(value + i);
    1.44 +      result = runTest(value + i);
    1.45 +      result = runTest(value + i);
    1.46 +    }
    1.47 +  }
    1.48 +
    1.49 +  public static int runTest(int value) {
    1.50 +    int v = value + value;
    1.51 +    int sum = 0;
    1.52 +    if (v < 4032) {
    1.53 +      for (int i = 0; i < 1023; ++i) {
    1.54 +        sum += Math.addExact(value, value);
    1.55 +      }
    1.56 +    } else {
    1.57 +      for (int i = 0; i < 321; ++i) {
    1.58 +        sum += Math.addExact(value, value);
    1.59 +      }
    1.60 +    }
    1.61 +    return sum + v;
    1.62 +  }
    1.63 +}