jdk8-mips64-public/hotspot: test/compiler/7177917/Test7177917.java@dbb05f6d93c4

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

     1 /*

     2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 /*

    26  * Micro-benchmark for Math.pow() and Math.exp()

    27  */

    29 import java.util.*;

    31 public class Test7177917 {

    33   static double d;

    35   static Random r = new Random(0);

    37   static long  m_pow(double[][] values) {

    38     double res = 0;

    39     long start = System.nanoTime();

    40     for (int i = 0; i < values.length; i++) {

    41       res += Math.pow(values[i][0], values[i][1]);

    42     }

    43     long stop = System.nanoTime();

    44     d = res;

    45     return (stop - start) / 1000;

    46   }

    48   static long  m_exp(double[] values) {

    49     double res = 0;

    50     long start = System.nanoTime();

    51     for (int i = 0; i < values.length; i++) {

    52       res += Math.exp(values[i]);

    53     }

    54     long stop = System.nanoTime();

    55     d = res;

    56     return (stop - start) / 1000;

    57   }

    59   static double[][] pow_values(int nb) {

    60     double[][] res = new double[nb][2];

    61     for (int i = 0; i < nb; i++) {

    62       double ylogx = (1 + (r.nextDouble() * 2045)) - 1023; // 2045 rather than 2046 as a safety margin

    63       double x = Math.abs(Double.longBitsToDouble(r.nextLong()));

    64       while (x != x) {

    65         x = Math.abs(Double.longBitsToDouble(r.nextLong()));

    66       }

    67       double logx = Math.log(x) / Math.log(2);

    68       double y = ylogx / logx;

    70       res[i][0] = x;

    71       res[i][1] = y;

    72     }

    73     return res;

    74   }

    76   static double[] exp_values(int nb) {

    77     double[] res = new double[nb];

    78     for (int i = 0; i < nb; i++) {

    79       double ylogx = (1 + (r.nextDouble() * 2045)) - 1023; // 2045 rather than 2046 as a safety margin

    80       double x = Math.E;

    81       double logx = Math.log(x) / Math.log(2);

    82       double y = ylogx / logx;

    83       res[i] = y;

    84     }

    85     return res;

    86   }

    88   static public void main(String[] args) {

    89     {

    90       // warmup

    91       double[][] warmup_values = pow_values(10);

    92       m_pow(warmup_values);

    94       for (int i = 0; i < 20000; i++) {

    95         m_pow(warmup_values);

    96       }

    97       // test pow perf

    98       double[][] values = pow_values(1000000);

    99       System.out.println("==> POW " + m_pow(values));

   101       // force uncommon trap

   102       double[][] nan_values = new double[1][2];

   103       nan_values[0][0] = Double.NaN;

   104       nan_values[0][1] = Double.NaN;

   105       m_pow(nan_values);

   107       // force recompilation

   108       for (int i = 0; i < 20000; i++) {

   109         m_pow(warmup_values);

   110       }

   112       // test pow perf again

   113       System.out.println("==> POW " + m_pow(values));

   114     }

   115     {

   116       // warmup

   117       double[] warmup_values = exp_values(10);

   118       m_exp(warmup_values);

   120       for (int i = 0; i < 20000; i++) {

   121         m_exp(warmup_values);

   122       }

   124       // test pow perf

   125       double[] values = exp_values(1000000);

   126       System.out.println("==> EXP " + m_exp(values));

   128       // force uncommon trap

   129       double[] nan_values = new double[1];

   130       nan_values[0] = Double.NaN;

   131       m_exp(nan_values);

   133       // force recompilation

   134       for (int i = 0; i < 20000; i++) {

   135         m_exp(warmup_values);

   136       }

   138       // test pow perf again

   139       System.out.println("==> EXP " + m_exp(values));

   140     }

   141   }

   142 }

Mercurial > jdk8-mips64-public > hotspot / file revision

test/compiler/7177917/Test7177917.java@dbb05f6d93c4

test/compiler/7177917/Test7177917.java