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/*
* Copyright (c) 2021, 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.
*/
package compiler.exceptions;
/**
* @test
* @bug 8263227
* @summary Tests that users of return values from exception-throwing method
* calls are not duplicated in the call's exception path. The second
* run with a variable seed is added for test robustness.
* @library /test/lib /
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions
* -XX:+UnlockDiagnosticVMOptions
* -Xbatch -XX:+StressGCM -XX:StressSeed=0
* -XX:+VerifyRegisterAllocator
* -XX:CompileCommand=dontinline,java.lang.Integer::*
* compiler.exceptions.TestSpilling
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions
* -XX:+UnlockDiagnosticVMOptions
* -Xbatch -XX:+StressGCM
* -XX:+VerifyRegisterAllocator
* -XX:CompileCommand=dontinline,java.lang.Integer::*
* compiler.exceptions.TestSpilling
*/
public class TestSpilling {
public static void test() {
int a = Integer.valueOf(42).intValue();
// After global code motion, the logic below should only be placed in
// the fall-through path of java.lang.Integer::intValue(). Otherwise,
// live range splitting might create uses without reaching definitions
// if 'a' is spilled.
int b = (((a & 0x0000F000)) + 1);
int c = a / b + ((a % b > 0) ? 1 : 0);
}
public static void main(String[] args) {
for (int i = 0; i < 10_000; i++) {
test();
}
}
}
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