zmajo@7638: /*
zmajo@7638:  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
zmajo@7638:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
zmajo@7638:  *
zmajo@7638:  * This code is free software; you can redistribute it and/or modify it
zmajo@7638:  * under the terms of the GNU General Public License version 2 only, as
zmajo@7638:  * published by the Free Software Foundation.
zmajo@7638:  *
zmajo@7638:  * This code is distributed in the hope that it will be useful, but WITHOUT
zmajo@7638:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
zmajo@7638:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
zmajo@7638:  * version 2 for more details (a copy is included in the LICENSE file that
zmajo@7638:  * accompanied this code).
zmajo@7638:  *
zmajo@7638:  * You should have received a copy of the GNU General Public License version
zmajo@7638:  * 2 along with this work; if not, write to the Free Software Foundation,
zmajo@7638:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
zmajo@7638:  *
zmajo@7638:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
zmajo@7638:  * or visit www.oracle.com if you need additional information or have any
zmajo@7638:  * questions.
zmajo@7638:  *
zmajo@7638:  */
zmajo@7638: 
zmajo@7638: /**
zmajo@7638:  * @test
zmajo@7638:  * @bug 8074869
zmajo@7638:  * @summary C2 code generator can replace -0.0f with +0.0f on Linux
zmajo@7638:  * @run main ConstFPVectorization 8
zmajo@7638:  * @author volker.simonis@gmail.com
zmajo@7638:  *
zmajo@7638:  */
zmajo@7638: 
zmajo@7638: public class ConstFPVectorization {
zmajo@7638: 
zmajo@7638:     static float[] f = new float[16];
zmajo@7638:     static double[] d = new double[16];
zmajo@7638: 
zmajo@7638:     static void floatLoop(int count) {
zmajo@7638:         for (int i = 0; i < count; i++) {
zmajo@7638:             f[i] = -0.0f;
zmajo@7638:         }
zmajo@7638:     }
zmajo@7638: 
zmajo@7638:     static void doubleLoop(int count) {
zmajo@7638:         for (int i = 0; i < count; i++) {
zmajo@7638:             d[i] = -0.0d;
zmajo@7638:         }
zmajo@7638:     }
zmajo@7638: 
zmajo@7638:     public static void main(String args[]) {
zmajo@7638:         for (int i = 0; i < 10_000; i++) {
zmajo@7638:             floatLoop(Integer.parseInt(args[0]));
zmajo@7638:             doubleLoop(Integer.parseInt(args[0]));
zmajo@7638:         }
zmajo@7638:         for (int i = 0; i < Integer.parseInt(args[0]); i++) {
zmajo@7638:             if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f))
zmajo@7638:                 throw new Error("Float error at index " + i);
zmajo@7638:             if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d))
zmajo@7638:                 throw new Error("Double error at index " + i);
zmajo@7638:         }
zmajo@7638:     }
zmajo@7638: }