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