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.
   */
  
  /**
   * Regression tests for BCE.
   */
  public class Main {
  
    static int[] array = new int[10];
  
    /// CHECK-START: int Main.doNotVisitAfterForwardBCE(int[]) BCE (before)
    /// CHECK-DAG: BoundsCheck loop:<<Loop:B\d+>> outer_loop:none
    /// CHECK-DAG: BoundsCheck loop:<<Loop>>      outer_loop:none
    //
    /// CHECK-START: int Main.doNotVisitAfterForwardBCE(int[]) BCE (after)
    /// CHECK-NOT: BoundsCheck
    static int doNotVisitAfterForwardBCE(int[] a) {
      if (a == null) {
        throw new Error("Null");
      }
      int k = 0;
      int j = 0;
      for (int i = 1; i < 10; i++) {
        j = i - 1;
        // b/32547652: after DCE, bounds checks become consecutive,
        // and second should not be revisited after forward BCE.
        k = a[i] + a[i - 1];
      }
      return j;
    }
  
    public static void main(String[] args) {
      expectEquals(8, doNotVisitAfterForwardBCE(array));
      System.out.println("passed");
    }
  
    private static void expectEquals(int expected, int result) {
      if (expected != result) {
        throw new Error("Expected: " + expected + ", found: " + result);
      }
    }
  }
  