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.
   */
  
  public class Main {
  
    private static int[] a = { 10 };
  
    // A very particular set of operations that caused a double removal by the
    // ARM64 simplifier doing "forward" removals (b/27851582).
  
    /// CHECK-START-ARM64: int Main.operations() instruction_simplifier_arm64 (before)
    /// CHECK-DAG: <<Get:i\d+>> ArrayGet
    /// CHECK-DAG: <<Not:i\d+>> Not [<<Get>>]
    /// CHECK-DAG: <<Shl:i\d+>> Shl [<<Get>>,i{{\d+}}]
    /// CHECK-DAG:              And [<<Not>>,<<Shl>>]
    //
    /// CHECK-START-ARM64: int Main.operations() instruction_simplifier_arm64 (after)
    /// CHECK-DAG: <<Get:i\d+>> ArrayGet
    /// CHECK-DAG: <<Not:i\d+>> Not [<<Get>>]
    /// CHECK-DAG:              Arm64DataProcWithShifterOp [<<Not>>,<<Get>>] kind:And+LSL shift:2
    private static int operations() {
       int r = a[0];
       int n = ~r;
       int s = r << 2;
       int a = s & n;
       return a;
    }
  
    public static void main(String[] args) {
      if (operations() != 32) {
        System.out.println("failed");
      } else {
        System.out.println("passed");
      }
    }
  }
  