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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 // Note that $opt$ is a marker for the optimizing compiler to ensure
     18 // it does compile the method.
     19 
     20 public class Main {
     21 
     22   public static void expectEquals(int expected, int value) {
     23     if (expected != value) {
     24       throw new Error("Expected: " + expected + ", found: " + value);
     25     }
     26   }
     27 
     28   public static void main(String[] args) {
     29     int result = $opt$testIfEq1(42);
     30     expectEquals(42, result);
     31 
     32     result = $opt$testIfEq2(42);
     33     expectEquals(7, result);
     34 
     35     result = $opt$testWhileLoop(42);
     36     expectEquals(45, result);
     37 
     38     result = $opt$testDoWhileLoop(42);
     39     expectEquals(45, result);
     40 
     41     result = $opt$testForLoop(42);
     42     expectEquals(44, result);
     43 
     44     result = $opt$testIfWithLocal(5);
     45     expectEquals(7, result);
     46   }
     47 
     48   static int $opt$testIfEq1(int a) {
     49     if (a + 1 == 43) {
     50       return 42;
     51     } else {
     52       return 7;
     53     }
     54   }
     55 
     56   static int $opt$testIfEq2(int a) {
     57     if (a + 1 == 41) {
     58       return 42;
     59     } else {
     60       return 7;
     61     }
     62   }
     63 
     64   static int $opt$testWhileLoop(int a) {
     65     while (a++ != 44) {}
     66     return a;
     67   }
     68 
     69   static int $opt$testDoWhileLoop(int a) {
     70     do {
     71     } while (a++ != 44);
     72     return a;
     73   }
     74 
     75   static int $opt$testForLoop(int a) {
     76     for (; a != 44; a++) {}
     77     return a;
     78   }
     79 
     80   static int $opt$testIfWithLocal(int a) {
     81     if (a == 5) {
     82       int f = 2;
     83       a += f;
     84     }
     85     // The SSA builder should not create a phi for f.
     86 
     87     return a;
     88   }
     89 }
     90