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 import java.lang.reflect.Method; 18 19 public class Main { 20 21 static int[] a = { 10 }; 22 23 // A very particular set of operations that caused a double removal by the 24 // ARM64 simplifier doing "forward" removals (b/27851582). 25 26 /// CHECK-START-ARM: int Main.operations() instruction_simplifier_arm (after) 27 /// CHECK-DAG: <<Get:i\d+>> ArrayGet 28 /// CHECK-DAG: <<Not:i\d+>> Not [<<Get>>] 29 /// CHECK-DAG: DataProcWithShifterOp [<<Not>>,<<Get>>] kind:And+LSL shift:2 30 31 /// CHECK-START-ARM64: int Main.operations() instruction_simplifier_arm64 (after) 32 /// CHECK-DAG: <<Get:i\d+>> ArrayGet 33 /// CHECK-DAG: <<Not:i\d+>> Not [<<Get>>] 34 /// CHECK-DAG: DataProcWithShifterOp [<<Not>>,<<Get>>] kind:And+LSL shift:2 35 private static int operations() { 36 int r = a[0]; 37 int n = ~r; 38 int s = r << 2; 39 int a = s & n; 40 return a; 41 } 42 43 public static void main(String[] args) { 44 if (operations() != 32) { 45 System.out.println("failed"); 46 } else { 47 System.out.println("passed"); 48 } 49 50 if ($noinline$runSmaliTest("operations") != 32) { 51 System.out.println("failed"); 52 } else { 53 System.out.println("passed"); 54 } 55 } 56 57 public static int $noinline$runSmaliTest(String name) { 58 try { 59 Class<?> c = Class.forName("SmaliTests"); 60 Method m = c.getMethod(name); 61 return (Integer) m.invoke(null); 62 } catch (Exception ex) { 63 throw new Error(ex); 64 } 65 } 66 } 67
