1 /*
   2  * Copyright (c) 2015, 2015, 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 package org.graalvm.compiler.core.test;
  24 
  25 import org.junit.Test;
  26 
  27 /**
  28  * Collection of tests for
  29  * {@link org.graalvm.compiler.phases.common.DominatorConditionalEliminationPhase} including those
  30  * that triggered bugs in this phase.
  31  */
  32 public class ConditionalEliminationTest4 extends ConditionalEliminationTestBase {
  33 
  34     @SuppressWarnings("all")
  35     public static int reference1Snippet(int a, int b) {
  36         if (a > b) {
  37             return 1;
  38         }
  39         return 2;
  40     }
  41 
  42     @SuppressWarnings("all")
  43     public static int test1Snippet(int a, int b) {
  44         if (a > b) {
  45             if (a > b) {
  46                 return 1;
  47             }
  48         }
  49         return 2;
  50     }
  51 
  52     @Test
  53     public void test1() {
  54         testConditionalElimination("test1Snippet", "reference1Snippet");
  55     }
  56 
  57     @SuppressWarnings("all")
  58     public static int reference2Snippet(int a, int b) {
  59         if (a < b) {
  60             return 1;
  61         }
  62         return 2;
  63     }
  64 
  65     @SuppressWarnings("all")
  66     public static int test2Snippet(int a, int b) {
  67         if (a < b) {
  68             if (a < b) {
  69                 return 1;
  70             }
  71         }
  72         return 2;
  73     }
  74 
  75     @Test
  76     public void test2() {
  77         testConditionalElimination("test2Snippet", "reference2Snippet");
  78     }
  79 }