52 lines
1.8 KiB
Java
52 lines
1.8 KiB
Java
/*
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* Copyright (c) 2019, 2020, 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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* @summary load/store elimination will print out instructions without bcis.
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* @bug 8235383
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* @requires vm.debug == true & vm.compiler1.enabled
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* @run main/othervm -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xcomp -XX:+PrintIRDuringConstruction -XX:+Verbose compiler.c1.TestPrintIRDuringConstruction
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*/
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package compiler.c1;
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public class TestPrintIRDuringConstruction {
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static class Dummy {
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public int value;
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}
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static int foo() {
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Dummy obj = new Dummy(); // c1 doesn't have Escape Analysis
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obj.value = 0; // dummy store an initial value.
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return obj.value + obj.value; // redundant load
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}
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public static void main(String[] args) {
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for (int i=0; i<5_000; ++i) {
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foo();
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}
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}
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}
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