1 /*
   2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.core.test;
  26 
  27 import org.junit.Test;
  28 
  29 public class ConditionalEliminationPiTest extends ConditionalEliminationTestBase {
  30 
  31     static int SideEffect;
  32 
  33     static double oracleValue1 = -0.0;
  34     static double oracleValue2;
  35 
  36     public static double testSnippet1(int a) {
  37         double phi;
  38         if (a > 0) {
  39             double oracle = oracleValue1;
  40             if (oracle == 0.0) {
  41                 SideEffect = 1;
  42             } else {
  43                 return 123;
  44             }
  45             phi = oracle;
  46         } else {
  47             double oracle = oracleValue2;
  48             if (oracle == 0.0) {
  49                 SideEffect = 1;
  50                 phi = oracle;
  51             } else {
  52                 return 0;
  53             }
  54         }
  55         if (Double.doubleToRawLongBits(phi) == Double.doubleToRawLongBits(-0.0)) {
  56             return 12;
  57         }
  58         return 2;
  59     }
  60 
  61     @Test
  62     public void test1() {
  63         test("testSnippet1", 1);
  64     }
  65 }
  66