1 /* 2 * Copyright (C) 2016 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 // 18 // Test on correctness in situations where slow paths may be shared 19 // (actual sharing may vary between different code generators). 20 // 21 // 22 public class Main { 23 24 // A method with two loops that can be optimized with dynamic BCE, 25 // resulting in a two times a deopt on null, a deopt on lower OOB, 26 // and a deopt on upper OOB. 27 private static void init(int[] x, int [] y, int l1, int h1, int l2, int h2) { 28 for (int i = l1; i < h1; i++) { 29 x[i] = i; 30 } 31 for (int i = l2; i < h2; i++) { 32 y[i] = i; 33 } 34 } 35 36 // Test that each of the six possible exceptions situations for init() 37 // are correctly handled by the deopt instructions. 38 public static void main(String[] args) { 39 int[] x = new int[100]; 40 int[] y = new int[100]; 41 int z; 42 43 // All is well. 44 z = 0; 45 reset(x, y); 46 try { 47 init(x, y, 0, 100, 0, 100); 48 } catch (Exception e) { 49 z = 1; 50 } 51 expectEquals(z, 0); 52 for (int i = 0; i < 100; i++) { 53 expectEquals(x[i], i); 54 expectEquals(y[i], i); 55 } 56 57 // Null deopt on x. 58 z = 0; 59 reset(x, y); 60 try { 61 init(null, y, 0, 100, 0, 100); 62 } catch (NullPointerException e) { 63 z = 1; 64 } 65 expectEquals(z, 1); 66 for (int i = 0; i < 100; i++) { 67 expectEquals(x[i], 0); 68 expectEquals(y[i], 0); 69 } 70 71 // Lower out-of-bounds on x. 72 z = 0; 73 reset(x, y); 74 try { 75 init(x, y, -1, 100, 0, 100); 76 } catch (ArrayIndexOutOfBoundsException e) { 77 z = 1; 78 } 79 expectEquals(z, 1); 80 for (int i = 0; i < 100; i++) { 81 expectEquals(x[i], 0); 82 expectEquals(y[i], 0); 83 } 84 85 // Upper out-of-bounds on x. 86 z = 0; 87 reset(x, y); 88 try { 89 init(x, y, 0, 101, 0, 100); 90 } catch (ArrayIndexOutOfBoundsException e) { 91 z = 1; 92 } 93 expectEquals(z, 1); 94 for (int i = 0; i < 100; i++) { 95 expectEquals(x[i], i); 96 expectEquals(y[i], 0); 97 } 98 99 // Null deopt on y. 100 z = 0; 101 reset(x, y); 102 try { 103 init(x, null, 0, 100, 0, 100); 104 } catch (NullPointerException e) { 105 z = 1; 106 } 107 expectEquals(z, 1); 108 for (int i = 0; i < 100; i++) { 109 expectEquals(x[i], i); 110 expectEquals(y[i], 0); 111 } 112 113 // Lower out-of-bounds on y. 114 z = 0; 115 reset(x, y); 116 try { 117 init(x, y, 0, 100, -1, 100); 118 } catch (ArrayIndexOutOfBoundsException e) { 119 z = 1; 120 } 121 expectEquals(z, 1); 122 for (int i = 0; i < 100; i++) { 123 expectEquals(x[i], i); 124 expectEquals(y[i], 0); 125 } 126 127 // Upper out-of-bounds on y. 128 z = 0; 129 reset(x, y); 130 try { 131 init(x, y, 0, 100, 0, 101); 132 } catch (ArrayIndexOutOfBoundsException e) { 133 z = 1; 134 } 135 expectEquals(z, 1); 136 for (int i = 0; i < 100; i++) { 137 expectEquals(x[i], i); 138 expectEquals(y[i], i); 139 } 140 141 System.out.println("passed"); 142 } 143 144 private static void reset(int[] x, int[] y) { 145 for (int i = 0; i < x.length; i++) x[i] = 0; 146 for (int i = 0; i < y.length; i++) y[i] = 0; 147 } 148 149 private static void expectEquals(int expected, int result) { 150 if (expected != result) { 151 throw new Error("Expected: " + expected + ", found: " + result); 152 } 153 } 154 } 155
