| /* |
| * Copyright (c) 2015, 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 8074869 |
| * @summary C2 code generator can replace -0.0f with +0.0f on Linux |
| * @run main compiler.loopopts.ConstFPVectorization 8 |
| * @author volker.simonis@gmail.com |
| */ |
| |
| package compiler.loopopts; |
| |
| public class ConstFPVectorization { |
| |
| static float[] f = new float[16]; |
| static double[] d = new double[16]; |
| |
| static void floatLoop(int count) { |
| for (int i = 0; i < count; i++) { |
| f[i] = -0.0f; |
| } |
| } |
| |
| static void doubleLoop(int count) { |
| for (int i = 0; i < count; i++) { |
| d[i] = -0.0d; |
| } |
| } |
| |
| public static void main(String args[]) { |
| for (int i = 0; i < 10_000; i++) { |
| floatLoop(Integer.parseInt(args[0])); |
| doubleLoop(Integer.parseInt(args[0])); |
| } |
| for (int i = 0; i < Integer.parseInt(args[0]); i++) { |
| if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f)) |
| throw new Error("Float error at index " + i); |
| if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d)) |
| throw new Error("Double error at index " + i); |
| } |
| } |
| } |