Java example source code file (Test.java)

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Java - Java tags/keywords

class, kill, point, reflection, test

The Test.java Java example source code

/*
 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 6689060
 * @summary Escape Analysis does not work with Compressed Oops
 * @run main/othervm -Xbatch -XX:CompileCommand=exclude,Test.dummy -XX:+AggressiveOpts Test
 */

import java.lang.reflect.Array;

class Point {
  int x;
  int y;
  Point next;
  int ax[];
  int ay[];
  Point pax[];
  Point pay[];
  public Point getNext() {
    return next;
  }
}

public class Test {

  void dummy() {
    // Empty method to verify correctness of DebugInfo.
    // Use -XX:CompileCommand=exclude,Test.dummy
  }

  int ival(int i) {
    return i*2;
  }

  int test80(int y, int l, int i) {
    Point p = new Point();
    p.ax = new int[2];
    p.ay = new int[2];
    int x = 3;
    p.ax[0] = x;
    p.ay[1] = 3 * x + y;
    dummy();
    return p.ax[0] * p.ay[1];
  }

  int test81(int y, int l, int i) {
    Point p = new Point();
    p.ax = new int[2];
    p.ay = new int[2];
    int x = 3;
    p.ax[0] = x;
    p.ay[1] = 3 * x + y;
    dummy();
    return p.ax[0] * p.ay[1];
  }


  int test44(int y) {
    Point p1 = new Point();
    p1.x = ival(3);
    dummy();
    p1.y = 3 * p1.x + y;
    return p1.y;
  }

  int test43(int y) {
    Point p1 = new Point();
    if ( (y & 1) == 1 ) {
      p1.x = ival(3);
    } else {
      p1.x = ival(5);
    }
    dummy();
    p1.y = 3 * p1.x + y;
    return p1.y;
  }

  int test42(int y) {
    Point p1 = new Point();
    p1.x = 3;
    for (int i = 0; i < y; i++) {
      if ( (i & 1) == 1 ) {
        p1.x += 4;
      }
    }
    p1.y = 3 * y + p1.x;
    return p1.y;
  }

  int test40(int y) {
    Point p1 = new Point();
    if ( (y & 1) == 1 ) {
      p1.x = 3;
    } else {
      p1.x = 5;
    }
    p1.y = 3 * p1.x + y;
    return p1.y;
  }

  int test41(int y) {
    Point p1 = new Point();
    if ( (y & 1) == 1 ) {
      p1.x += 4;
    } else {
      p1.x += 5;
    }
    p1.y = 3 * p1.x + y;
    return p1.y;
  }

  Point test00(int y) {
    int x = 3;
    Point p = new Point();
    p.x = x;
    p.y = 3 * x + y;
    return p;
  }

  Point test01(int y) {
    int x = 3;
    Point p = new Point();
    p.x = x;
    p.y = 3 * x + y;
    dummy();
    return p;
  }

  Point test02(int y) {
    int x = 3;
    Point p1 = null;
    for (int i = 0; i < y; i++) {
      Point p2 = new Point();
      p2.x = x;
      p2.y = 3 * y + x;
      p2.next = p1;
      p1 = p2;
    }
    return p1;
  }

  Point test03(int y) {
    int x = 3;
    Point p1 = null;
    for (int i = 0; i < y; i++) {
      Point p2 = new Point();
      p2.x = x;
      p2.y = 3 * y + x;
      p2.next = p1;
      p1 = p2;
    }
    dummy();
    return p1;
  }

  Point test04(int y) {
    int x = 3;
    Point p1 = null;
    for (int i = 0; i < y; i++) {
      Point p2 = new Point();
      p2.x = x;
      p2.y = 3 * y + x;
      p2.next = p1;
      dummy();
      p1 = p2;
    }
    return p1;
  }

  int test05(int y) {
    int x = 3;
    Point p1 = new Point();
    for (int i = 0; i < y; i++) {
      Point p2 = new Point();
      p2.x = x;
      p2.y = 3 * y + x;
      p1.next = p2;
      p1 = p2;
    }
    return p1.y;
  }

  int test0(int y) {
    int x = 3;
    Point p = new Point();
    p.x = x;
    p.y = 3 * x + y;
    dummy();
    return p.x * p.y;
  }

  int test1(int y) {
    Point p = new Point();
    if ( (y & 1) == 1 ) {
      p = new Point(); // Kill previous
    }
    int x = 3;
    p.x = x;
    p.y = 3 * x + y;
    dummy();
    return p.x * p.y;
  }

  int test2(int y) {
    Point p1 = new Point();
    Point p2 = new Point();
    p1.x = 3;
    p2.x = 4;
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test3(int y, Point p1) {
    Point p2 = new Point();
    p1.x = 3;
    p2.x = 4;
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test4(int y) {
    Point p1 = new Point();
    Point p2 = new Point();
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p2.x = 4;
    } else {
      p1.x = 5;
      p2.x = 6;
    }
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test5(int y, Point p1) {
    Point p2 = new Point();
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p2.x = 4;
    } else {
      p1.x = 5;
      p2.x = 6;
    }
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test6(int y) {
    Point p1 = new Point();
    Point p2 = new Point();
    p1.next = p2;
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p1.getNext().x = 4;
    } else {
      p1.x = 5;
      p1.getNext().x = 6;
    }
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test7(int y, Point p1) {
    Point p2 = new Point();
    p1.next = p2;
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p1.getNext().x = 4;
    } else {
      p1.x = 5;
      p1.getNext().x = 6;
    }
    p1.y = 3 * p2.x + y;
    p2.y = 3 * p1.x + y;
    dummy();
    return p1.y * p2.y;
  }

  int test8(int y, int l, int i) {
    Point p = new Point();
    p.ax = new int[l];
    p.ay = new int[l];
    int x = 3;
    p.ax[i] = x;
    p.ay[i] = 3 * x + y;
    dummy();
    return p.ax[i] * p.ay[i];
  }

  int test9(int y, int l, int i) {
    Point p = new Point();
    p.pax = new Point[l];
    p.pay = new Point[l];
    p.pax[i] = new Point();
    p.pay[i] = new Point();
    p.pax[i].x = 3;
    p.pay[i].x = 4;
    p.pax[i].y = 3 * p.pay[i].x + y;
    p.pay[i].y = 3 * p.pax[i].x + y;
    dummy();
    return p.pax[i].y * p.pay[i].y;
  }

  int test10(int y, int l, int i, Class cls) {
    Point p = new Point();
    try {
      p.pax = (Point[])Array.newInstance(cls, l);
      p.pax[i] = (Point)cls.newInstance();
    }
    catch(java.lang.InstantiationException ex) {
      return 0;
    }
    catch(java.lang.IllegalAccessException ex) {
      return 0;
    }
    p.pax[i].x = 3;
    p.pax[i].y = 3 * p.pax[i].x + y;
    dummy();
    return p.pax[i].x * p.pax[i].y;
  }

  int test11(int y) {
    Point p1 = new Point();
    Point p2 = new Point();
    p1.next = p2;
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p1.next.x = 4;
    } else {
      p1.x = 5;
      p1.next.x = 6;
    }
    p1.y = 3 * p1.next.x + y;
    p1.next.y = 3 * p1.x + y;
    dummy();
    return p1.y * p1.next.y;
  }

  int test12(int y) {
    Point p1 = new Point();
    p1.next = p1;
    if ( (y & 1) == 1 ) {
      p1.x = 3;
      p1.next.x = 4;
    } else {
      p1.x = 5;
      p1.next.x = 6;
    }
    p1.y = 3 * p1.next.x + y;
    p1.next.y = 3 * p1.x + y;
    dummy();
    return p1.y * p1.next.y;
  }


  public static void main(String args[]) {
    Test tsr    = new Test();
    Point p     = new Point();
    Point ptmp  = p;
    Class cls   = Point.class;
    int y = 0;
    for (int i=0; i<10000; i++) {
      ptmp.next = tsr.test00(1);
      ptmp.next = tsr.test01(1);
      ptmp.next = tsr.test02(1);
      ptmp.next = tsr.test03(1);
      ptmp.next = tsr.test04(1);

      y = tsr.test05(1);

      y = tsr.test80(y, 1, 0);
      y = tsr.test81(y, 1, 0);

      y = tsr.test44(y);
      y = tsr.test43(y);
      y = tsr.test42(y);
      y = tsr.test40(y);
      y = tsr.test41(y);

      y = tsr.test0(y);
      y = tsr.test1(y);
      y = tsr.test2(y);
      y = tsr.test3(y, p);
      y = tsr.test4(y);
      y = tsr.test5(y, p);
      y = tsr.test6(y);
      y = tsr.test7(y, p);
      y = tsr.test8(y, 1, 0);
      y = tsr.test9(y, 1, 0);
      y = tsr.test10(y, 1, 0, cls);
      y = tsr.test11(y);
      y = tsr.test12(y);
    }
    for (int i=0; i<10000; i++) {
      ptmp.next = tsr.test00(1);
      ptmp.next = tsr.test01(1);
      ptmp.next = tsr.test02(1);
      ptmp.next = tsr.test03(1);
      ptmp.next = tsr.test04(1);

      y = tsr.test05(1);

      y = tsr.test80(y, 1, 0);
      y = tsr.test81(y, 1, 0);

      y = tsr.test44(y);
      y = tsr.test43(y);
      y = tsr.test42(y);
      y = tsr.test40(y);
      y = tsr.test41(y);

      y = tsr.test0(y);
      y = tsr.test1(y);
      y = tsr.test2(y);
      y = tsr.test3(y, p);
      y = tsr.test4(y);
      y = tsr.test5(y, p);
      y = tsr.test6(y);
      y = tsr.test7(y, p);
      y = tsr.test8(y, 1, 0);
      y = tsr.test9(y, 1, 0);
      y = tsr.test10(y, 1, 0, cls);
      y = tsr.test11(y);
      y = tsr.test12(y);
    }
    for (int i=0; i<10000; i++) {
      ptmp.next = tsr.test00(1);
      ptmp.next = tsr.test01(1);
      ptmp.next = tsr.test02(1);
      ptmp.next = tsr.test03(1);
      ptmp.next = tsr.test04(1);

      y = tsr.test05(1);

      y = tsr.test80(y, 1, 0);
      y = tsr.test81(y, 1, 0);

      y = tsr.test44(y);
      y = tsr.test43(y);
      y = tsr.test42(y);
      y = tsr.test40(y);
      y = tsr.test41(y);

      y = tsr.test0(y);
      y = tsr.test1(y);
      y = tsr.test2(y);
      y = tsr.test3(y, p);
      y = tsr.test4(y);
      y = tsr.test5(y, p);
      y = tsr.test6(y);
      y = tsr.test7(y, p);
      y = tsr.test8(y, 1, 0);
      y = tsr.test9(y, 1, 0);
      y = tsr.test10(y, 1, 0, cls);
      y = tsr.test11(y);
      y = tsr.test12(y);
    }

    int z = 0;
    y = tsr.test80(0, 1, 0);
    z += y;
    System.out.println("After 'test80' y=" + y);
    y = tsr.test81(0, 1, 0);
    z += y;
    System.out.println("After 'test81' y=" + y);

    y = tsr.test44(0);
    z += y;
    System.out.println("After 'test44' y=" + y);
    y = tsr.test43(0);
    z += y;
    System.out.println("After 'test43' y=" + y);
    y = tsr.test42(0);
    z += y;
    System.out.println("After 'test42' y=" + y);
    y = tsr.test40(0);
    z += y;
    System.out.println("After 'test40' y=" + y);
    y = tsr.test41(0);
    z += y;
    System.out.println("After 'test41' y=" + y);

    ptmp.next = tsr.test00(1);
    z += y;
    System.out.println("After 'test00' p.y=" + ptmp.next.y);
    ptmp.next = tsr.test01(1);
    z += y;
    System.out.println("After 'test01' p.y=" + ptmp.next.y);
    ptmp.next = tsr.test02(1);
    z += y;
    System.out.println("After 'test02' p.y=" + ptmp.next.y);
    ptmp.next = tsr.test03(1);
    z += y;
    System.out.println("After 'test03' p.y=" + ptmp.next.y);
    ptmp.next = tsr.test04(1);
    z += y;
    System.out.println("After 'test04' p.y=" + ptmp.next.y);

    y = tsr.test05(1);
    z += y;
    System.out.println("After 'test05' y=" + y);

    y = tsr.test0(0);
    z += y;
    System.out.println("After 'test0' y=" + y);
    y = tsr.test1(0);
    z += y;
    System.out.println("After 'test1' y=" + y);
    y = tsr.test2(0);
    z += y;
    System.out.println("After 'test2' y=" + y);
    y = tsr.test3(0, new Point());
    z += y;
    System.out.println("After 'test3' y=" + y);
    y = tsr.test4(0);
    z += y;
    System.out.println("After 'test4' y=" + y);
    y = tsr.test5(0, new Point());
    z += y;
    System.out.println("After 'test5' y=" + y);
    y = tsr.test6(0);
    z += y;
    System.out.println("After 'test6' y=" + y);
    y = tsr.test7(0, new Point());
    z += y;
    System.out.println("After 'test7' y=" + y);
    y = tsr.test8(0, 1, 0);
    z += y;
    System.out.println("After 'test8' y=" + y);
    y = tsr.test9(0, 1, 0);
    z += y;
    System.out.println("After 'test9' y=" + y);
    y = tsr.test10(0, 1, 0, cls);
    z += y;
    System.out.println("After 'test10' y=" + y);
    y = tsr.test11(0);
    z += y;
    System.out.println("After 'test11' y=" + y);
    y = tsr.test12(0);
    z += y;
    System.out.println("After 'test12' y=" + y);
    System.out.println("Sum of y =" + z);
  }
}