| /* |
| * 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 |
| * @key stress randomness |
| * @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(); |
| } |
| } |
| |
| } |
