69 lines
2.3 KiB
Java
69 lines
2.3 KiB
Java
/*
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* Copyright (c) 2017, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8187822
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* @summary C2 conditonal move optimization might create broken graph
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* @requires vm.flavor == "server"
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* @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestCMovSplitThruPhi::not_inlined -XX:CompileOnly=TestCMovSplitThruPhi::test -XX:-LoopUnswitching TestCMovSplitThruPhi
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*
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*/
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public class TestCMovSplitThruPhi {
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static int f;
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static int test(boolean flag1, boolean flag2, boolean flag3, boolean flag4) {
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int v3 = 0;
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if (flag4) {
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for (int i = 0; i < 10; i++) {
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int v1 = 0;
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if (flag1) {
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v1 = not_inlined();
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}
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// AddI below will be candidate for split through Phi
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int v2 = v1;
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if (flag2) {
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v2 = f + v1;
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}
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// test above will be converted to CMovI
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if (flag3) {
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v3 = v2 * 2;
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break;
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}
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}
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}
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return v3;
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}
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private static int not_inlined() {
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return 0;
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}
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public static void main(String[] args) {
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for (int i = 0; i < 20000; i++) {
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test((i % 2) == 0, (i % 2) == 0, (i % 100) == 1, (i % 1000) == 1);
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}
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}
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}
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