1 /*
   2  * Copyright (c) 2011, 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.optimize;
  24 
  25 import java.util.Random;
  26 
  27 import org.junit.Test;
  28 
  29 import org.graalvm.compiler.jtt.JTTTest;
  30 
  31 /*
  32  */
  33 @SuppressWarnings("unused")
  34 public class Conditional01 extends JTTTest {
  35 
  36     private static class TestClass {
  37         private int nextPC;
  38         private int pc;
  39         private boolean aC;
  40         private boolean aH;
  41         private boolean aN;
  42         private boolean aZ;
  43         private boolean aV;
  44         private boolean aS;
  45         private int cyclesConsumed;
  46         private int[] sram = new int[RAM_SIZE];
  47 
  48         public void visit(CPC i) {
  49             nextPC = pc + 2;
  50             int tmp0 = getRegisterByte(i.r1);
  51             int tmp1 = getRegisterByte(i.r2);
  52             int tmp2 = bit(aC);
  53             int tmp3 = tmp0 - tmp1 - tmp2;
  54             boolean tmp4 = ((tmp0 & 128) != 0);
  55             boolean tmp5 = ((tmp1 & 128) != 0);
  56             boolean tmp6 = ((tmp3 & 128) != 0);
  57             boolean tmp7 = ((tmp0 & 8) != 0);
  58             boolean tmp8 = ((tmp1 & 8) != 0);
  59             boolean tmp9 = ((tmp3 & 8) != 0);
  60             aH = !tmp7 && tmp8 || tmp8 && tmp9 || tmp9 && !tmp7;
  61             aC = !tmp4 && tmp5 || tmp5 && tmp6 || tmp6 && !tmp4;
  62             aN = tmp6;
  63             aZ = low(tmp3) == 0 && aZ;
  64             aV = tmp4 && !tmp5 && !tmp6 || !tmp4 && tmp5 && tmp6;
  65             aS = (aN != aV);
  66             cyclesConsumed++;
  67         }
  68 
  69         public int getRegisterByte(Register r1) {
  70             if ((r1.val % 10) == 0) {
  71                 return sram[r1.num];
  72             }
  73             return r1.val;
  74         }
  75 
  76         public int low(int tmp3) {
  77             return tmp3 & 0x01;
  78         }
  79 
  80         public int bit(boolean c2) {
  81             return c2 ? 1 : 0;
  82         }
  83     }
  84 
  85     private static final int RAM_SIZE = 0x100;
  86     private static final int init = new Random().nextInt();
  87     private static final int init1 = new Register().val;
  88     private static final Register init2 = new CPC().r1;
  89 
  90     public static int test(int arg) {
  91         TestClass c = new TestClass();
  92         Random rnd = new Random();
  93         for (int i = 0; i < arg; i++) {
  94             CPC i2 = new CPC();
  95             i2.r1 = new Register();
  96             i2.r1.val = i;
  97             i2.r1.num = i + RAM_SIZE - 20;
  98             i2.r2 = new Register();
  99             i2.r2.val = rnd.nextInt();
 100             i2.r2.num = rnd.nextInt(RAM_SIZE);
 101             try {
 102                 c.visit(i2);
 103             } catch (RuntimeException re) {
 104 
 105             }
 106         }
 107         return c.cyclesConsumed;
 108     }
 109 
 110     private static class Register {
 111 
 112         int val;
 113         int num;
 114     }
 115 
 116     private static class CPC {
 117 
 118         public Register r1;
 119         public Register r2;
 120 
 121     }
 122 
 123     @Test
 124     public void run0() throws Throwable {
 125         runTest("test", 0);
 126     }
 127 
 128     @Test
 129     public void run1() throws Throwable {
 130         runTest("test", 10);
 131     }
 132 
 133     @Test
 134     public void run2() throws Throwable {
 135         runTest("test", 20);
 136     }
 137 
 138     @Test
 139     public void run3() throws Throwable {
 140         runTest("test", 40);
 141     }
 142 
 143 }