content: /*
   * Copyright (C) 2017 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 {
  
    // Note that this is testing we haven't intrinsified the byte[] arraycopy version.
    // Once we eventually start doing it, we will need to re-adjust this test.
  
    /// CHECK-START-X86: void Main.typedCopy(java.lang.Object, byte[]) disassembly (after)
    /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
    /// CHECK-NOT:    call
    /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
    /// CHECK:        call
    /// CHECK: ReturnVoid
    public static void typedCopy(Object o, byte[] foo) {
      System.arraycopy(o, 1, o, 0, 1);
      System.arraycopy(foo, 1, foo, 0, 1);
    }
  
    public static void untypedCopy(Object o, Object foo) {
      System.arraycopy(o, 1, o, 0, 1);
      System.arraycopy(foo, 1, foo, 0, 1);
    }
  
    // Test that we still do the optimization after inlining.
  
    /// CHECK-START-X86: void Main.untypedCopyCaller(java.lang.Object, byte[]) disassembly (after)
    /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
    /// CHECK-NOT:    call
    /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
    /// CHECK:        call
    /// CHECK: ReturnVoid
    public static void untypedCopyCaller(Object o, byte[] array) {
      untypedCopy(o, array);
    }
  
    public static void assertEquals(Object one, Object two) {
      if (one != two) {
        throw new Error("Expected " + one + ", got " + two);
      }
    }
  
    public static void main(String[] args) {
      // Simple sanity checks.
      byte[] a = new byte[2];
      Object[] o = new Object[2];
  
      o[0] = a;
      o[1] = o;
      a[0] = 1;
      a[1] = 2;
  
      untypedCopyCaller(o, a);
      assertEquals(o[0], o);
      assertEquals(o[1], o);
      assertEquals(a[0], (byte)2);
      assertEquals(a[1], (byte)2);
  
      o[0] = a;
      o[1] = o;
      a[0] = 1;
      a[1] = 2;
  
      typedCopy(o, a);
      assertEquals(o[0], o);
      assertEquals(o[1], o);
      assertEquals(a[0], (byte)2);
      assertEquals(a[1], (byte)2);
    }
  }
  