view test/compiler/6823453/Test.java @ 6611:7383557659bd

7185699: G1: Prediction model discrepancies Summary: Correct the result value of G1CollectedHeap::pending_card_num(). Change the code that calculates the GC efficiency of a non-young heap region to use historical data from mixed GCs and the actual number of live bytes when predicting how long it would take to collect the region. Changes were also reviewed by Thomas Schatzl. Reviewed-by: azeemj, brutisso
author johnc
date Tue, 21 Aug 2012 14:10:39 -0700
parents c18cbe5936b8
children
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/*
 * Copyright (c) 2009, 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 6823453
 * @summary DeoptimizeALot causes fastdebug server jvm to fail with assert(false,"unscheduable graph")
 * @run main/othervm -Xcomp -XX:+IgnoreUnrecognizedVMOptions -XX:CompileOnly=Test -XX:+DeoptimizeALot Test
 */

public class Test {

   static long vara_1 = 1L;

   static void testa() {
      short var_2 = (byte) 1.0E10;

      for ( Object temp = new byte[(byte)1.0E10];  true ;
            var_2 = "1".equals("0") ? ((byte) vara_1) : 1 ) {}
   }

   static void testb() {
      long var_1 = -1L;

      short var_2 = (byte) 1.0E10;

      for ( Object temp = new byte[(byte)1.0E10];  true ;
            var_2 = "1".equals("0") ? ((byte) var_1) : 1 ) {}
   }

   static void testc() {
      long var_1 = -1L;
      if (vara_1 > 0)  var_1 = 1L;

      int var_2 = (byte)var_1 - 128;

      for ( Object temp = new byte[var_2];  true ;
            var_2 = "1".equals("0") ? 2 : 1 ) {}
   }

   static void testd() {
      long var_1 = 0L;

      int var_2 = (byte)var_1 + 1;
      for (int i=0; i<2 ; i++)  var_2 = var_2 - 1;

      for ( Object temp = new byte[var_2];  true ;
            var_2 = "1".equals("0") ? 2 : 1 ) {}
   }

   public static void main(String[] args) throws Exception {
      int nex = 0;

      try {
         testa();
      }
      catch (java.lang.NegativeArraySizeException ex) { nex++; }
      try {
         testb();
      }
      catch (java.lang.NegativeArraySizeException ex) { nex++; }
      try {
         testc();
      }
      catch (java.lang.NegativeArraySizeException ex) { nex++; }
      try {
         testd();
      }
      catch (java.lang.NegativeArraySizeException ex) { nex++; }

      if (nex != 4)
        System.exit(97);
   }
}