mirror of
https://github.com/openjdk/jdk.git
synced 2026-01-28 12:09:14 +00:00
81 lines
2.6 KiB
Java
81 lines
2.6 KiB
Java
/*
|
|
* Copyright (c) 2025, 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 id=with-flags
|
|
* @bug 8370332
|
|
* @summary This test shows a case where split_if split a node through a phi, but left the
|
|
* dead node and a dead phi in the loop _body. Subsequently, SuperWord was run, and
|
|
* found the dead nodes in the _body, which is not expected.
|
|
* @run main/othervm
|
|
* -XX:CompileCommand=compileonly,*TestSplitThruPhiRemoveDeadNodesFromLoopBody::test
|
|
* -Xbatch
|
|
* compiler.loopopts.superword.TestSplitThruPhiRemoveDeadNodesFromLoopBody
|
|
*/
|
|
|
|
/*
|
|
* @test id=vanilla
|
|
* @bug 8370332
|
|
* @run main compiler.loopopts.superword.TestSplitThruPhiRemoveDeadNodesFromLoopBody
|
|
*/
|
|
|
|
package compiler.loopopts.superword;
|
|
|
|
public class TestSplitThruPhiRemoveDeadNodesFromLoopBody {
|
|
static int N = 400;
|
|
static float floatZero = 0;
|
|
static boolean falseFlag = false;;
|
|
|
|
static int fieldStore = 0;
|
|
static int fieldIncr = 0;
|
|
static int arrayI[] = new int[N];
|
|
|
|
static void inlined() {
|
|
int x = 0;
|
|
for (int i = 0; i < 100; i++) {
|
|
fieldStore = 42;
|
|
if (falseFlag) {
|
|
for (int k = 0; k < 20; k++) {
|
|
x += i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void test() {
|
|
inlined();
|
|
for (int k = 0; k < 10; k++) {
|
|
for (int j = 0; j < 100; j++) {
|
|
fieldIncr += floatZero;
|
|
arrayI[j] = 42; // SuperWord happens here -> SIGSEGV
|
|
}
|
|
}
|
|
}
|
|
|
|
public static void main(String[] strArr) {
|
|
for (int i = 0; i < 1_000; i++) {
|
|
test();
|
|
}
|
|
}
|
|
}
|