137 lines
3.6 KiB
Java
137 lines
3.6 KiB
Java
/*
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* Copyright (c) 2023, 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 8318826
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* @summary C2: "Bad graph detected in build_loop_late" with incremental inlining
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* @requires vm.compiler2.enabled
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+AlwaysIncrementalInline -XX:-BackgroundCompilation TestNullAtCallAfterLateInline
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*/
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public class TestNullAtCallAfterLateInline {
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private static final C c = new C();
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private static final A a = new A();
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private static volatile int volatileField;
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private static B b= new B();
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public static void main(String[] args) {
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for (int i = 0; i < 20_000; i++) {
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testHelper1(0, true);
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testHelper1(1, true);
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testHelper1(2, true);
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test1(false);
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testHelper2(0, true, b);
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testHelper2(1, true, c);
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testHelper2(2, true, a);
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inlined2(null, 3);
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test2(false, null);
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}
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}
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private static int test1(boolean flag) {
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for (int i = 0; i < 10; i++) {
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}
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return testHelper1(3, flag);
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}
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private static int testHelper1(int i, boolean flag) {
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int v;
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if (flag) {
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A a = inlined1(i);
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a.notInlined();
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v = a.field;
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} else {
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volatileField = 42;
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v = volatileField;
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}
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return v;
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}
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private static A inlined1(int i) {
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if (i == 0) {
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return b;
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} else if (i == 1) {
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return c;
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} else if (i == 2) {
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return a;
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}
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return null;
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}
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private static int test2(boolean flag, A a) {
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for (int i = 0; i < 10; i++) {
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}
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return testHelper2(3, flag, a);
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}
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private static int testHelper2(int i, boolean flag, A a) {
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int v;
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if (flag) {
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inlined2(a, i);
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a.notInlined();
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v = a.field;
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} else {
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volatileField = 42;
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v = volatileField;
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}
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return v;
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}
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private static void inlined2(Object a, int i) {
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if (i == 0) {
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if (!(a instanceof B)) {
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}
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} else if (i == 1) {
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if (!(a instanceof C)) {
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}
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} else if (i == 2) {
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if (!(a instanceof A)) {
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}
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} else {
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if (!(a instanceof D)) {
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}
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}
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}
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private static class A {
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public int field;
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void notInlined() {}
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}
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private static class B extends A {
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void notInlined() {}
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}
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private static class C extends A {
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void notInlined() {}
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}
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private static class D {
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}
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}
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