| /* |
| * Copyright (c) 2017, Red Hat, Inc. 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 8187822 |
| * @summary C2 conditonal move optimization might create broken graph |
| * @requires vm.flavor == "server" |
| * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestCMovSplitThruPhi::not_inlined -XX:CompileOnly=TestCMovSplitThruPhi::test -XX:-LoopUnswitching TestCMovSplitThruPhi |
| * |
| */ |
| |
| public class TestCMovSplitThruPhi { |
| static int f; |
| |
| static int test(boolean flag1, boolean flag2, boolean flag3, boolean flag4) { |
| int v3 = 0; |
| if (flag4) { |
| for (int i = 0; i < 10; i++) { |
| int v1 = 0; |
| if (flag1) { |
| v1 = not_inlined(); |
| } |
| // AddI below will be candidate for split through Phi |
| int v2 = v1; |
| if (flag2) { |
| v2 = f + v1; |
| } |
| // test above will be converted to CMovI |
| if (flag3) { |
| v3 = v2 * 2; |
| break; |
| } |
| } |
| } |
| return v3; |
| } |
| |
| private static int not_inlined() { |
| return 0; |
| } |
| |
| public static void main(String[] args) { |
| for (int i = 0; i < 20000; i++) { |
| test((i % 2) == 0, (i % 2) == 0, (i % 100) == 1, (i % 1000) == 1); |
| } |
| } |
| } |
