1 /* 2 * Copyright (C) 2017 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 // Note that this is testing we haven't intrinsified the byte[] arraycopy version. 20 // Once we eventually start doing it, we will need to re-adjust this test. 21 22 /// CHECK-START-X86: void Main.typedCopy(java.lang.Object, byte[]) disassembly (after) 23 /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy 24 /// CHECK-NOT: call 25 /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy 26 /// CHECK: call 27 /// CHECK: ReturnVoid 28 public static void typedCopy(Object o, byte[] foo) { 29 System.arraycopy(o, 1, o, 0, 1); 30 System.arraycopy((Object)foo, 1, (Object)foo, 0, 1); // Don't use the @hide byte[] overload. 31 } 32 33 public static void untypedCopy(Object o, Object foo) { 34 System.arraycopy(o, 1, o, 0, 1); 35 System.arraycopy(foo, 1, foo, 0, 1); 36 } 37 38 // Test that we still do the optimization after inlining. 39 40 /// CHECK-START-X86: void Main.untypedCopyCaller(java.lang.Object, byte[]) disassembly (after) 41 /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy 42 /// CHECK-NOT: call 43 /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy 44 /// CHECK: call 45 /// CHECK: ReturnVoid 46 public static void untypedCopyCaller(Object o, byte[] array) { 47 untypedCopy(o, array); 48 } 49 50 public static void assertEquals(Object one, Object two) { 51 if (one != two) { 52 throw new Error("Expected " + one + ", got " + two); 53 } 54 } 55 56 public static void main(String[] args) { 57 // Simple sanity checks. 58 byte[] a = new byte[2]; 59 Object[] o = new Object[2]; 60 61 o[0] = a; 62 o[1] = o; 63 a[0] = 1; 64 a[1] = 2; 65 66 untypedCopyCaller(o, a); 67 assertEquals(o[0], o); 68 assertEquals(o[1], o); 69 assertEquals(a[0], (byte)2); 70 assertEquals(a[1], (byte)2); 71 72 o[0] = a; 73 o[1] = o; 74 a[0] = 1; 75 a[1] = 2; 76 77 typedCopy(o, a); 78 assertEquals(o[0], o); 79 assertEquals(o[1], o); 80 assertEquals(a[0], (byte)2); 81 assertEquals(a[1], (byte)2); 82 } 83 } 84
