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/*
* Copyright (C) 2016 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.
*/
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
class Test1 {
int[] iarr;
}
class Test2 {
float[] farr;
}
public class Main {
public static Object[] getObjectArray() { return null; }
public static long[] getLongArray() { return null; }
public static Object getNull() { return null; }
public static Test1 getNullTest1() { return null; }
public static Test2 getNullTest2() { return null; }
public static void $noinline$runSmaliTest(String name) throws Throwable {
try {
Class<?> c = Class.forName("SmaliTests");
Method m = c.getMethod(name);
m.invoke(null);
} catch (InvocationTargetException ex) {
throw ex.getCause(); // re-raise expected exception.
} catch (Exception ex) {
throw new Error(ex);
}
}
public static void main(String[] args) {
try {
foo();
throw new Error("Expected NullPointerException");
} catch (NullPointerException e) {
// Expected.
}
try {
bar();
throw new Error("Expected NullPointerException");
} catch (NullPointerException e) {
// Expected.
}
try {
$noinline$runSmaliTest("bar");
throw new Error("Expected NullPointerException");
} catch (NullPointerException e) {
// Expected.
} catch (Throwable t) {
throw new Error("Unexpected Throwable", t);
}
try {
$noinline$runSmaliTest("bar2");
throw new Error("Expected NullPointerException");
} catch (NullPointerException e) {
// Expected.
} catch (Throwable t) {
throw new Error("Unexpected Throwable", t);
}
try {
test1();
throw new Error("Expected NullPointerException");
} catch (NullPointerException e) {
// Expected.
}
}
/// CHECK-START: void Main.foo() load_store_elimination (after)
/// CHECK-DAG: <<Null:l\d+>> NullConstant
/// CHECK-DAG: <<Check:l\d+>> NullCheck [<<Null>>]
/// CHECK-DAG: <<Get1:j\d+>> ArrayGet [<<Check>>,{{i\d+}}]
/// CHECK-DAG: <<Get2:l\d+>> ArrayGet [<<Check>>,{{i\d+}}]
public static void foo() {
longField = getLongArray()[0];
objectField = getObjectArray()[0];
}
/// CHECK-START: void Main.bar() load_store_elimination (after)
/// CHECK-DAG: <<Null:l\d+>> NullConstant
/// CHECK-DAG: BoundType [<<Null>>]
/// CHECK-DAG: <<CheckL:l\d+>> NullCheck
/// CHECK-DAG: <<GetL0:l\d+>> ArrayGet [<<CheckL>>,{{i\d+}}]
/// CHECK-DAG: <<GetL1:l\d+>> ArrayGet [<<CheckL>>,{{i\d+}}]
/// CHECK-DAG: <<GetL2:l\d+>> ArrayGet [<<CheckL>>,{{i\d+}}]
/// CHECK-DAG: <<GetL3:l\d+>> ArrayGet [<<CheckL>>,{{i\d+}}]
/// CHECK-DAG: <<CheckJ:l\d+>> NullCheck [<<Null>>]
/// CHECK-DAG: <<GetJ0:j\d+>> ArrayGet [<<CheckJ>>,{{i\d+}}]
/// CHECK-DAG: <<GetJ1:j\d+>> ArrayGet [<<CheckJ>>,{{i\d+}}]
/// CHECK-DAG: <<GetJ2:j\d+>> ArrayGet [<<CheckJ>>,{{i\d+}}]
/// CHECK-DAG: <<GetJ3:j\d+>> ArrayGet [<<CheckJ>>,{{i\d+}}]
public static void bar() {
// We create multiple accesses that will lead the bounds check
// elimination pass to add a HDeoptimize. Not having the bounds check
// makes the ArrayGets look almost the same if it were not for the type!
String[] array = (String[])getNull();
objectField = array[0];
objectField = array[1];
objectField = array[2];
objectField = array[3];
long[] longArray = getLongArray();
longField = longArray[0];
longField = longArray[1];
longField = longArray[2];
longField = longArray[3];
}
/// CHECK-START: float Main.test1() load_store_elimination (after)
/// CHECK-DAG: <<Null:l\d+>> NullConstant
/// CHECK-DAG: <<Check1:l\d+>> NullCheck [<<Null>>]
/// CHECK-DAG: <<FieldGet1:l\d+>> InstanceFieldGet [<<Check1>>] field_name:Test1.iarr
/// CHECK-DAG: <<Check2:l\d+>> NullCheck [<<FieldGet1>>]
/// CHECK-DAG: <<ArrayGet1:i\d+>> ArrayGet [<<Check2>>,{{i\d+}}]
/// CHECK-DAG: <<ArrayGet2:f\d+>> ArrayGet [<<Check2>>,{{i\d+}}]
/// CHECK-DAG: Return [<<ArrayGet2>>]
public static float test1() {
Test1 test1 = getNullTest1();
Test2 test2 = getNullTest2();
int[] iarr = test1.iarr;
float[] farr = test2.farr;
iarr[0] = iarr[1];
return farr[0];
}
public static long longField;
public static Object objectField;
}
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