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view test/compiler/6689060/Test.java @ 20304:a22acf6d7598

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8048112: G1 Full GC needs to support the case when the very first region is not available Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett. Reviewed-by: brutisso
author tschatzl
date Mon, 21 Jul 2014 10:00:31 +0200
parents c18cbe5936b8
children
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/*
 * 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);
  }
}