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/*
* Copyright (c) 2024, 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 8340454
* @summary Check that Reduce Allocation Merges doesn't crash when
* a reducible Phi becomes irreducible after the last of
* its SR inputs is flagged as NSR.
* @run main/othervm -XX:CompileCommand=dontinline,*TestReduceAllocationAndNonReduciblePhi*::test
* -XX:CompileCommand=compileonly,*TestReduceAllocationAndNonReduciblePhi*::test
* -XX:CompileCommand=compileonly,*Picture*::*
* -XX:CompileCommand=compileonly,*Point*::*
* -XX:CompileCommand=inline,*Picture*::*
* -XX:CompileCommand=inline,*Point*::*
* -XX:CompileCommand=exclude,*::dummy*
* -Xbatch
* compiler.escapeAnalysis.TestReduceAllocationAndNonReduciblePhi
*
* @run main compiler.escapeAnalysis.TestReduceAllocationAndNonReduciblePhi
*/
package compiler.escapeAnalysis;
public class TestReduceAllocationAndNonReduciblePhi {
public static void main(String args[]) {
int result = 0;
for (int i = 0; i < 20000; i++) {
result += test(i % 2 == 0, i % 3);
}
System.out.println("Result is = " + result);
}
public static int test(boolean flag1, int pos) {
Point p0 = new Point();
Point p1 = flag1 ? null : p0;
Picture pic = new Picture();
pic.p = p0;
Picture[] ps = new Picture[5];
ps[pos] = pic;
return p1 != null ? dummy1() : dummy2();
}
public static int dummy1() { return 1; }
public static int dummy2() { return 2; }
private static class Picture {
public Point p;
}
private static class Point { }
}
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