63 lines
2.0 KiB
Java
63 lines
2.0 KiB
Java
/*
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* Copyright (c) 2021, 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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package compiler.c2;
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/**
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* @test
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* @bug 8266480
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* @summary Check correct re-wiring of control edge when hoisting a memory
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* operation for an implicit null check.
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* @run main/othervm -Xbatch
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* compiler.c2.TestImplicitNullCheckDominance
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*/
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public class TestImplicitNullCheckDominance {
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double dFld;
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int iFld;
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static void test1(TestImplicitNullCheckDominance t, double d) {
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for (int i = 0; i < 100; i++) {
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t.dFld = d % 42;
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t.iFld = 43;
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}
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}
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static void test2(TestImplicitNullCheckDominance t) {
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for (int i = 0; i < 10; i++) {
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for (int j = 0; j < 100; j++) {
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t.dFld %= 42;
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t.iFld = 43;
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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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TestImplicitNullCheckDominance t = new TestImplicitNullCheckDominance();
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for (int i = 0; i < 50_000; ++i) {
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test1(t, i);
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test2(t);
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}
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}
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}
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