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/*
* Copyright (c) 2020, 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
* @requires vm.compiler2.enabled
* @bug 8238438
* @summary Tests to select the memory state of the last load in a load pack in SuperWord::co_locate_pack.
*
* @run main/othervm -Xbatch -XX:CompileCommand=compileonly,compiler.loopopts.superword.CoLocatePackMemoryState::test
* -XX:LoopMaxUnroll=16 compiler.loopopts.superword.CoLocatePackMemoryState
*/
package compiler.loopopts.superword;
public class CoLocatePackMemoryState {
public static final int N = 64;
public static byte byFld;
public static int iArr[] = new int[N+1];
public static void test() {
// Needs to pick the memory state of the last load for the iArr[i] load pack in SuperWord::co_locate_pack
// since it is dependent on the iArr[i+1] stores.
for (int i = 0; i < N; ++i) {
iArr[i+1] = i;
iArr[i] -= 15;
byFld += 35;
}
}
public static void main(String[] strArr) {
for (int i = 0; i < 2000; i++) {
for (int j = 0; j < N; j++) {
iArr[j] = 0;
}
test();
if (iArr[0] != -15) {
throw new RuntimeException("iArr[0] must be -15 but was " + iArr[0]);
}
for (int j = 1; j < N; j++) {
if (iArr[j] != (j-16)) {
throw new RuntimeException("iArr[" + j + "] must be " + (j-16) + " but was " + iArr[j]);
}
}
}
}
}
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