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 public class Main { 18 19 static int static_variable = 0; 20 21 /// CHECK-START-ARM64: int Main.arrayAccess() scheduler (before) 22 /// CHECK: <<Const1:i\d+>> IntConstant 1 23 /// CHECK: <<i0:i\d+>> Phi 24 /// CHECK: <<res0:i\d+>> Phi 25 /// CHECK: <<Array:i\d+>> IntermediateAddress 26 /// CHECK: <<ArrayGet1:i\d+>> ArrayGet [<<Array>>,<<i0>>] 27 /// CHECK: <<res1:i\d+>> Add [<<res0>>,<<ArrayGet1>>] 28 /// CHECK: <<i1:i\d+>> Add [<<i0>>,<<Const1>>] 29 /// CHECK: <<ArrayGet2:i\d+>> ArrayGet [<<Array>>,<<i1>>] 30 /// CHECK: Add [<<res1>>,<<ArrayGet2>>] 31 32 /// CHECK-START-ARM64: int Main.arrayAccess() scheduler (after) 33 /// CHECK: <<Const1:i\d+>> IntConstant 1 34 /// CHECK: <<i0:i\d+>> Phi 35 /// CHECK: <<res0:i\d+>> Phi 36 /// CHECK: <<Array:i\d+>> IntermediateAddress 37 /// CHECK: <<ArrayGet1:i\d+>> ArrayGet [<<Array>>,<<i0>>] 38 /// CHECK: <<i1:i\d+>> Add [<<i0>>,<<Const1>>] 39 /// CHECK: <<ArrayGet2:i\d+>> ArrayGet [<<Array>>,<<i1>>] 40 /// CHECK: <<res1:i\d+>> Add [<<res0>>,<<ArrayGet1>>] 41 /// CHECK: Add [<<res1>>,<<ArrayGet2>>] 42 arrayAccess()43 public static int arrayAccess() { 44 int res = 0; 45 int [] array = new int[10]; 46 for (int i = 0; i < 9; i++) { 47 res += array[i]; 48 res += array[i + 1]; 49 } 50 return res; 51 } 52 53 /// CHECK-START-ARM64: int Main.intDiv(int) scheduler (before) 54 /// CHECK: Sub 55 /// CHECK: DivZeroCheck 56 /// CHECK: Div 57 /// CHECK: StaticFieldSet 58 59 /// CHECK-START-ARM64: int Main.intDiv(int) scheduler (after) 60 /// CHECK: Sub 61 /// CHECK-NOT: StaticFieldSet 62 /// CHECK: DivZeroCheck 63 /// CHECK-NOT: Sub 64 /// CHECK: Div intDiv(int arg)65 public static int intDiv(int arg) { 66 int res = 0; 67 int tmp = arg; 68 for (int i = 1; i < arg; i++) { 69 tmp -= i; 70 res = res / i; // div-zero check barrier. 71 static_variable++; 72 } 73 res += tmp; 74 return res; 75 } 76 main(String[] args)77 public static void main(String[] args) { 78 if ((arrayAccess() + intDiv(10)) != -35) { 79 System.out.println("FAIL"); 80 } 81 } 82 } 83