Mercurial > hg > graal-jvmci-8

annotate test/compiler/loopopts/ConstFPVectorization.java @ 24226:abc19eb35547

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allow java.vm.name and java.vm.version to be initialized from a vm.properties file next to libjvm
author Doug Simon <doug.simon@oracle.com>
date Thu, 24 Aug 2017 22:20:40 +0200
parents aefa2e84b424
children
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1 /*
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
aefa2e84b424 8074869: C2 code generator can replace -0.0f with +0.0f on Linux
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aefa2e84b424 8074869: C2 code generator can replace -0.0f with +0.0f on Linux
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aefa2e84b424 8074869: C2 code generator can replace -0.0f with +0.0f on Linux
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 /**
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26 * @test
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27 * @bug 8074869
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28 * @summary C2 code generator can replace -0.0f with +0.0f on Linux
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29 * @run main ConstFPVectorization 8
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30 * @author volker.simonis@gmail.com
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31 *
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32 */
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33
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34 public class ConstFPVectorization {
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35
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36 static float[] f = new float[16];
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37 static double[] d = new double[16];
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38
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39 static void floatLoop(int count) {
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40 for (int i = 0; i < count; i++) {
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41 f[i] = -0.0f;
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42 }
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43 }
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44
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45 static void doubleLoop(int count) {
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46 for (int i = 0; i < count; i++) {
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47 d[i] = -0.0d;
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48 }
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49 }
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50
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51 public static void main(String args[]) {
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52 for (int i = 0; i < 10_000; i++) {
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53 floatLoop(Integer.parseInt(args[0]));
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54 doubleLoop(Integer.parseInt(args[0]));
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55 }
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56 for (int i = 0; i < Integer.parseInt(args[0]); i++) {
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57 if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f))
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58 throw new Error("Float error at index " + i);
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59 if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d))
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60 throw new Error("Double error at index " + i);
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61 }
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62 }
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63 }