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/*
* Copyright (c) 2016, 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 8148490
* @summary Test correct saving and restoring of vector registers at safepoints.
*
* @run main/othervm -Xbatch -XX:-TieredCompilation
* -XX:+UnlockDiagnosticVMOptions -XX:+SafepointALot
* -XX:CompileCommand=exclude,compiler.runtime.safepoints.TestRegisterRestoring::main
* compiler.runtime.safepoints.TestRegisterRestoring
*/
package compiler.runtime.safepoints;
public class TestRegisterRestoring {
public static void main(String args[]) throws Exception {
// Initialize
float[] array = new float[100];
for (int i = 0; i < array.length; ++i) {
array[i] = 0;
}
// Test
for (int j = 0; j < 20_000; ++j) {
increment(array);
// Check result
for (int i = 0; i < array.length; i++) {
if (array[i] != 10_000) {
throw new RuntimeException("Test failed: array[" + i + "] = " + array[i] + " but should be 10,000");
}
array[i] = 0;
}
}
}
static void increment(float[] array) {
// Loop with safepoint
for (long l = 0; l < 10_000; l++) {
// Vectorized loop
for (int i = 0; i < array.length; ++i) {
array[i] += 1;
}
}
}
}
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