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 
  24 
  25 package org.graalvm.compiler.core.test;
  26 
  27 import org.junit.Ignore;
  28 import org.junit.Test;
  29 
  30 /**
  31  * Collection of tests for {@link org.graalvm.compiler.phases.common.ConditionalEliminationPhase}
  32  * including those that triggered bugs in this phase.
  33  */
  34 @Ignore
  35 public class ConditionalEliminationTest7 extends ConditionalEliminationTestBase {
  36 
  37     @SuppressWarnings("all")
  38     public static int test1Snippet(int a, Object b) {
  39         int sum = 0;
  40         for (int j = 0;; ++j) {
  41             ++sum;
  42             if (b instanceof String) {
  43                 if (sum == 100) {
  44                     break;
  45                 }
  46             }
  47         }
  48         String s = (String) b;
  49         return s.length() + sum;
  50     }
  51 
  52     @Test
  53     public void test1() {
  54         // One loop exit is skipped.
  55         testProxies("test1Snippet", 1);
  56     }
  57 
  58     @SuppressWarnings("all")
  59     public static int test2Snippet(int a, Object b) {
  60         int sum = 0;
  61         for (int j = 0;; ++j) {
  62             ++sum;
  63             if (b instanceof String) {
  64                 break;
  65             }
  66         }
  67         String s = (String) b;
  68         return s.length() + sum;
  69     }
  70 
  71     @Test
  72     public void test2() {
  73         // The loop exit is the anchor => no proxy necessary.
  74         testProxies("test2Snippet", 0);
  75     }
  76 
  77     @SuppressWarnings("all")
  78     public static int test3Snippet(int a, Object b) {
  79         int sum = a;
  80         outer: while (true) {
  81             sum++;
  82             while (sum++ != 20) {
  83                 while (sum++ != 30) {
  84                     while (sum++ != 40) {
  85                         while (sum++ != 50) {
  86                             if (b instanceof String) {
  87                                 break outer;
  88                             }
  89                         }
  90                     }
  91                 }
  92             }
  93         }
  94         String s = (String) b;
  95         return s.length() + sum;
  96     }
  97 
  98     @Test
  99     public void test3() {
 100         // The break skips over 4 other loops.
 101         testProxies("test3Snippet", 4);
 102     }
 103 }