| /* |
| * 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. |
| */ |
| |
| package compiler.conversions; |
| |
| /* |
| * @test |
| * @bug 8253404 |
| * @requires vm.compiler2.enabled |
| * @summary Tests that the optimization of a chain of integer additions followed |
| * by a long conversion does not lead to an explosion of live nodes. |
| * @library /test/lib / |
| * @run main/othervm -Xcomp -XX:-TieredCompilation |
| * -XX:CompileOnly=compiler.conversions.TestChainOfIntAddsToLongConversion::main |
| * -XX:MaxNodeLimit=1000 -XX:NodeLimitFudgeFactor=25 |
| * compiler.conversions.TestChainOfIntAddsToLongConversion |
| */ |
| |
| public class TestChainOfIntAddsToLongConversion { |
| public static void main(String[] args) { |
| long out = 0; |
| for (int i = 0; i < 2; i++) { |
| int foo = i; |
| for (int j = 0; j < 17; j++) { |
| // Int addition to be turned into a chain by loop unrolling. |
| foo = foo + foo; |
| } |
| // Int to long conversion. |
| out = foo; |
| } |
| System.out.println(out); |
| } |
| } |
