da43cb5e46
Disable walking up the dominator chain for regions with more than 2 input paths. Reviewed-by: roland, kvn
55 lines
1.8 KiB
Java
55 lines
1.8 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. 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 8224957
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* @summary Test splitting a boxed field load through a loop Phi.
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* @run main/othervm -XX:-TieredCompilation -XX:-ProfileInterpreter
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* -XX:CompileOnly=compiler.eliminateAutobox.TestSplitThroughPhi::test
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* compiler.eliminateAutobox.TestSplitThroughPhi
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*/
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package compiler.eliminateAutobox;
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public class TestSplitThroughPhi {
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static volatile boolean loop = true;
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public static void test(Object obj) {
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for (int i = 0; i == 0; ) {
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// OSR compilation generates Region with 3 input paths
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while (true) {
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// Load from boxed int
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int val = (Integer)obj;
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if (val == i++) break;
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if (!loop) break;
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}
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}
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}
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public static void main(String[] args) {
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test(100_000);
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}
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}
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