1 /* 2 * Copyright (C) 2015 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 public class Main { bar(int[] a)18 public static int[] bar(int[] a) { 19 a[0] = 0; 20 a[1] = 0; 21 a[2] = 0; 22 // Up to this point, we record that the lower bound (inclusive) is 3. 23 // The next instruction will record that the lower bound is 5. 24 // The deoptimization code used to assume the lower bound has 25 // to be the one it will add for the deoptimization check (here, it 26 // would be 3). 27 return new int[a.length - 5]; 28 } 29 foo(int[] a)30 public static int[] foo(int[] a) { 31 a[0] = 0; 32 a[1] = 0; 33 a[2] = 0; 34 // Up to this point, we record that the lower bound (inclusive) is 3. 35 // The next instruction will record that the lower bound is 1. 36 // The deoptimization code used to assume the lower bound has 37 // to be the one it will add for the deoptimization check (here, it 38 // would be 3). 39 return new int[a.length - 1]; 40 } 41 main(String[] args)42 public static void main(String[] args) { 43 int[] a = new int[5]; 44 int[] result = bar(a); 45 if (result.length != 0) { 46 throw new Error("Expected 0, got " + result.length); 47 } 48 49 result = foo(a); 50 if (result.length != 4) { 51 throw new Error("Expected 5, got " + result.length); 52 } 53 } 54 } 55