content: /*
   * 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.
   */
  
  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 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 {
        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:l\d+>>  BoundType [<<Null>>]
    /// CHECK-DAG: <<CheckL:l\d+>>     NullCheck [<<BoundType>>]
    /// 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 helped
      // the load store elimination think it could merge two ArrayGet with different
      // types.
      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;
  }
  