1 /*
   2  * Copyright (c) 2007, 2012, 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.jtt.bytecode;
  24 
  25 import org.junit.Test;
  26 
  27 import org.graalvm.compiler.jtt.JTTTest;
  28 
  29 /*
  30  */
  31 public class BC_ifeq extends JTTTest {
  32 
  33     public static int test(int a) {
  34         int n = 0;
  35         if (a == 0) {
  36             n += 1;
  37         } else {
  38             n -= 1;
  39         }
  40         if (a != 0) {
  41             n -= 1;
  42         } else {
  43             n += 1;
  44         }
  45         return n;
  46     }
  47 
  48     @Test
  49     public void run0() throws Throwable {
  50         runTest("test", 0);
  51     }
  52 
  53     @Test
  54     public void run1() throws Throwable {
  55         runTest("test", 1);
  56     }
  57 
  58     @Test
  59     public void run3() {
  60         runTest("testb", 0xff);
  61     }
  62 
  63     /**
  64      * Tests if the if does work properly on byte stamp.
  65      */
  66     public static int testb(int b) {
  67         byte x = (byte) b;
  68         int y = x & 0xff;
  69         if (y == 0xff) {
  70             // Just do anything else to force jump instead of conditional move
  71             y = (int) (System.currentTimeMillis() >> 32);
  72         }
  73         return y;
  74     }
  75 
  76     @Test
  77     public void run4() {
  78         runTest("tests", 0xffff);
  79     }
  80 
  81     /**
  82      * Tests if the if does work properly on short stamp.
  83      */
  84     public static int tests(int b) {
  85         short x = (short) b;
  86         int y = x & 0xffff;
  87         if (y == 0xffff) {
  88             // Just do anything else to force jump instead of conditional move
  89             y = (int) (System.currentTimeMillis() >> 32);
  90         }
  91         return y;
  92     }
  93 
  94     @Test
  95     public void run5() {
  96         runTest("testc", 0xffff);
  97     }
  98 
  99     /**
 100      * Tests if the if does work properly on char stamp (boils down to short, just to cover all the
 101      * java types).
 102      */
 103     public static int testc(int b) {
 104         char x = (char) b;
 105         int y = x & 0xffff;
 106         if (y == 0xffff) {
 107             // Just do anything else to force jump instead of conditional move
 108             y = (int) (System.currentTimeMillis() >> 32);
 109         }
 110         return y;
 111     }
 112 
 113     // the same with conditional move
 114     @Test
 115     public void run6() {
 116         runTest("testCondb", 0xff);
 117     }
 118 
 119     /**
 120      * Tests if the if does work properly on byte stamp.
 121      */
 122     public static boolean testCondb(int b) {
 123         byte x = (byte) b;
 124         int y = x & 0xff;
 125         return y == 0xff;
 126     }
 127 
 128     @Test
 129     public void run7() {
 130         runTest("testConds", 0xffff);
 131     }
 132 
 133     /**
 134      * Tests if the if does work properly on short stamp.
 135      */
 136     public static boolean testConds(int b) {
 137         short x = (short) b;
 138         int y = x & 0xffff;
 139         return y == 0xffff;
 140     }
 141 
 142     @Test
 143     public void run8() {
 144         runTest("testCondc", 0xffff);
 145     }
 146 
 147     /**
 148      * Tests if the if does work properly on char type.
 149      */
 150     public static boolean testCondc(int b) {
 151         char x = (char) b;
 152         int y = x & 0xffff;
 153         return y == 0xffff;
 154     }
 155 }