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

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/compiler/loopopts/ConstFPVectorization.java	Thu Mar 19 19:53:34 2015 +0100
     1.3 @@ -0,0 +1,63 @@
     1.4 +/*
     1.5 + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +/**
    1.29 + * @test
    1.30 + * @bug 8074869
    1.31 + * @summary C2 code generator can replace -0.0f with +0.0f on Linux
    1.32 + * @run main ConstFPVectorization 8
    1.33 + * @author volker.simonis@gmail.com
    1.34 + *
    1.35 + */
    1.36 +
    1.37 +public class ConstFPVectorization {
    1.38 +
    1.39 +    static float[] f = new float[16];
    1.40 +    static double[] d = new double[16];
    1.41 +
    1.42 +    static void floatLoop(int count) {
    1.43 +        for (int i = 0; i < count; i++) {
    1.44 +            f[i] = -0.0f;
    1.45 +        }
    1.46 +    }
    1.47 +
    1.48 +    static void doubleLoop(int count) {
    1.49 +        for (int i = 0; i < count; i++) {
    1.50 +            d[i] = -0.0d;
    1.51 +        }
    1.52 +    }
    1.53 +
    1.54 +    public static void main(String args[]) {
    1.55 +        for (int i = 0; i < 10_000; i++) {
    1.56 +            floatLoop(Integer.parseInt(args[0]));
    1.57 +            doubleLoop(Integer.parseInt(args[0]));
    1.58 +        }
    1.59 +        for (int i = 0; i < Integer.parseInt(args[0]); i++) {
    1.60 +            if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f))
    1.61 +                throw new Error("Float error at index " + i);
    1.62 +            if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d))
    1.63 +                throw new Error("Double error at index " + i);
    1.64 +        }
    1.65 +    }
    1.66 +}