content: /*
   * Copyright (C) 2014 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 mX = 2;
    private static int mY = -3;
  
    public static void main(String[] args) {
      System.out.println(foo(3, 4));
      System.out.println(mulAndIntrinsic());
      System.out.println(directIntrinsic(-5));
    }
  
    /// CHECK-START: int Main.foo(int, int) GVN (before)
    /// CHECK: Add
    /// CHECK: Add
    /// CHECK: Add
  
    /// CHECK-START: int Main.foo(int, int) GVN (after)
    /// CHECK: Add
    /// CHECK: Add
    /// CHECK-NOT: Add
  
    public static int foo(int x, int y) {
      int sum1 = x + y;
      int sum2 = y + x;
      return sum1 + sum2;
    }
  
    /// CHECK-START: int Main.mulAndIntrinsic() GVN (before)
    /// CHECK: StaticFieldGet
    /// CHECK: StaticFieldGet
    /// CHECK: Mul
    /// CHECK: InvokeStaticOrDirect
    /// CHECK: StaticFieldGet
    /// CHECK: StaticFieldGet
    /// CHECK: Mul
    /// CHECK: Add
  
    /// CHECK-START: int Main.mulAndIntrinsic() GVN (after)
    /// CHECK: StaticFieldGet
    /// CHECK: StaticFieldGet
    /// CHECK: Mul
    /// CHECK: InvokeStaticOrDirect
    /// CHECK-NOT: StaticFieldGet
    /// CHECK-NOT: StaticFieldGet
    /// CHECK-NOT: Mul
    /// CHECK: Add
  
    public static int mulAndIntrinsic() {
      // The intermediate call to abs() does not kill
      // the common subexpression on the multiplication.
      int mul1 = mX * mY;
      int abs  = Math.abs(mul1);
      int mul2 = mY * mX;
      return abs + mul2;
    }
  
    /// CHECK-START: int Main.directIntrinsic(int) GVN (before)
    /// CHECK: InvokeStaticOrDirect
    /// CHECK: InvokeStaticOrDirect
    /// CHECK: Add
  
    /// CHECK-START: int Main.directIntrinsic(int) GVN (after)
    /// CHECK: InvokeStaticOrDirect
    /// CHECK-NOT: InvokeStaticOrDirect
    /// CHECK: Add
  
    public static int directIntrinsic(int x) {
      // Here, the two calls to abs() themselves can be replaced with just one.
      int abs1 = Math.abs(x);
      int abs2 = Math.abs(x);
      return abs1 + abs2;
    }
  
  }
  