/*
|
* Copyright (C) 2015 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
|
public class Main {
|
public static void main(String[] args) {
|
arraycopy();
|
try {
|
arraycopy(new Object());
|
throw new Error("Should not be here");
|
} catch (ArrayStoreException ase) {
|
// Ignore.
|
}
|
try {
|
arraycopy(null);
|
throw new Error("Should not be here");
|
} catch (NullPointerException npe) {
|
// Ignore.
|
}
|
|
try {
|
arraycopy(new Object[1]);
|
throw new Error("Should not be here");
|
} catch (ArrayIndexOutOfBoundsException aiooe) {
|
// Ignore.
|
}
|
|
arraycopy(new Object[2]);
|
arraycopy(new Object[2], 0);
|
|
try {
|
arraycopy(new Object[1], 1);
|
throw new Error("Should not be here");
|
} catch (ArrayIndexOutOfBoundsException aiooe) {
|
// Ignore.
|
}
|
}
|
|
/// CHECK-START-X86_64: void Main.arraycopy() disassembly (after)
|
/// CHECK: InvokeStaticOrDirect intrinsic:SystemArrayCopy
|
/// CHECK-NOT: test {{^[^\[].*}}, {{^[^\[].*}}
|
/// CHECK-NOT: call
|
/// CHECK: ReturnVoid
|
// Checks that the call is intrinsified and that there is no register test instruction
|
// when we know the source and destination are not null.
|
public static void arraycopy() {
|
Object[] obj = new Object[4];
|
System.arraycopy(obj, 1, obj, 0, 1);
|
}
|
|
public static void arraycopy(Object obj) {
|
System.arraycopy(obj, 1, obj, 0, 1);
|
}
|
|
// Test case for having enough registers on x86 for the arraycopy intrinsic.
|
/// CHECK-START-X86: void Main.arraycopy(java.lang.Object[], int) disassembly (after)
|
/// CHECK: InvokeStaticOrDirect intrinsic:SystemArrayCopy
|
/// CHECK-NOT: mov {{[a-z]+}}, [esp + {{[0-9]+}}]
|
/// CHECK: ReturnVoid
|
public static void arraycopy(Object[] obj, int pos) {
|
System.arraycopy(obj, pos, obj, 0, obj.length);
|
}
|
|
// Test case for having enough registers on x86 for the arraycopy intrinsic
|
// when an input is passed twice.
|
/// CHECK-START-X86: int Main.arraycopy2(java.lang.Object[], int) disassembly (after)
|
/// CHECK: InvokeStaticOrDirect intrinsic:SystemArrayCopy
|
/// CHECK-NOT: mov {{[a-z]+}}, [esp + {{[0-9]+}}]
|
/// CHECK: Return
|
public static int arraycopy2(Object[] obj, int pos) {
|
System.arraycopy(obj, pos, obj, pos - 1, obj.length);
|
return pos;
|
}
|
|
// Test case for not having enough registers on x86. The arraycopy intrinsic
|
// will ask for length to be in stack and load it.
|
/// CHECK-START-X86: int Main.arraycopy3(java.lang.Object[], java.lang.Object[], int, int, int) disassembly (after)
|
/// CHECK: InvokeStaticOrDirect intrinsic:SystemArrayCopy
|
/// CHECK: mov {{[a-z]+}}, [esp + {{[0-9]+}}]
|
/// CHECK: Return
|
public static int arraycopy3(Object[] obj1, Object[] obj2, int input1, int input3, int input4) {
|
System.arraycopy(obj1, input1, obj2, input3, input4);
|
System.out.println(obj1);
|
System.out.println(obj2);
|
return input1 + input3 + input4;
|
}
|
}
|
