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...dk.graal.compiler.test/src/jdk/graal/compiler/hotspot/test/SecondarySupersLookupTest.java
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| /* | ||
| * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
| package jdk.graal.compiler.hotspot.test; | ||
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| import org.junit.Test; | ||
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| public class SecondarySupersLookupTest extends HotSpotGraalCompilerTest { | ||
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| interface I01 { | ||
| } | ||
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| interface I02 extends I01 { | ||
| } | ||
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| interface I03 extends I02 { | ||
| } | ||
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| interface I04 extends I03 { | ||
| } | ||
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| interface I05 extends I04 { | ||
| } | ||
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| interface I06 extends I05 { | ||
| } | ||
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| interface I07 extends I06 { | ||
| } | ||
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| interface I08 extends I07 { | ||
| } | ||
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| interface I09 extends I08 { | ||
| } | ||
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| interface I10 extends I09 { | ||
| } | ||
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| interface I11 extends I10 { | ||
| } | ||
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| interface I12 extends I11 { | ||
| } | ||
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| interface I13 extends I12 { | ||
| } | ||
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| interface I14 extends I13 { | ||
| } | ||
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| interface I15 extends I14 { | ||
| } | ||
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| interface I16 extends I15 { | ||
| } | ||
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| interface I17 extends I16 { | ||
| } | ||
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| interface I18 extends I17 { | ||
| } | ||
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| interface I19 extends I18 { | ||
| } | ||
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| interface I20 extends I19 { | ||
| } | ||
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| interface I21 extends I20 { | ||
| } | ||
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| interface I22 extends I21 { | ||
| } | ||
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| interface I23 extends I22 { | ||
| } | ||
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| interface I24 extends I23 { | ||
| } | ||
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| interface I25 extends I24 { | ||
| } | ||
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| interface I26 extends I25 { | ||
| } | ||
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| interface I27 extends I26 { | ||
| } | ||
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| interface I28 extends I27 { | ||
| } | ||
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| interface I29 extends I28 { | ||
| } | ||
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| interface I30 extends I29 { | ||
| } | ||
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| interface I31 extends I30 { | ||
| } | ||
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| interface I32 extends I31 { | ||
| } | ||
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| interface I33 extends I32 { | ||
| } | ||
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| interface I34 extends I33 { | ||
| } | ||
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| interface I35 extends I34 { | ||
| } | ||
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| interface I36 extends I35 { | ||
| } | ||
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| interface I37 extends I36 { | ||
| } | ||
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| interface I38 extends I37 { | ||
| } | ||
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| interface I39 extends I38 { | ||
| } | ||
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| interface I40 extends I39 { | ||
| } | ||
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| interface I41 extends I40 { | ||
| } | ||
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| interface I42 extends I41 { | ||
| } | ||
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| interface I43 extends I42 { | ||
| } | ||
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| interface I44 extends I43 { | ||
| } | ||
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| interface I45 extends I44 { | ||
| } | ||
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| interface I46 extends I45 { | ||
| } | ||
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| interface I47 extends I46 { | ||
| } | ||
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| interface I48 extends I47 { | ||
| } | ||
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| interface I49 extends I48 { | ||
| } | ||
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| interface I50 extends I49 { | ||
| } | ||
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| interface I51 extends I50 { | ||
| } | ||
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| interface I52 extends I51 { | ||
| } | ||
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| interface I53 extends I52 { | ||
| } | ||
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| interface I54 extends I53 { | ||
| } | ||
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| interface I55 extends I54 { | ||
| } | ||
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| interface I56 extends I55 { | ||
| } | ||
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| interface I57 extends I56 { | ||
| } | ||
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| interface I58 extends I57 { | ||
| } | ||
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| interface I59 extends I58 { | ||
| } | ||
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| interface I60 extends I59 { | ||
| } | ||
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| interface I61 extends I60 { | ||
| } | ||
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| interface I62 extends I61 { | ||
| } | ||
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| interface I63 extends I62 { | ||
| } | ||
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| interface I64 extends I63 { | ||
| } | ||
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| final Object obj01 = new I01() { | ||
| }; | ||
| final Object obj08 = new I08() { | ||
| }; | ||
| final Object obj34 = new I34() { | ||
| }; | ||
| final Object obj60 = new I60() { | ||
| }; | ||
| final Object obj64 = new I64() { | ||
| }; | ||
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| public static boolean instanceOfI01(Object o) { | ||
| return o instanceof I01; | ||
| } | ||
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| @Test | ||
| public void testHashHitMiss() { | ||
| // hash miss | ||
| test("instanceOfI01", new Object()); | ||
| // hash hit | ||
| test("instanceOfI01", obj01); | ||
| } | ||
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| public static boolean instanceOfI08(Object o) { | ||
| return o instanceof I08; | ||
| } | ||
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| public static boolean instanceOfI34(Object o) { | ||
| return o instanceof I34; | ||
| } | ||
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| public static boolean instanceOfI60(Object o) { | ||
| return o instanceof I60; | ||
| } | ||
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| @Test | ||
| public void testHashCollision() { | ||
| // hash collision, call into slow path, more than 64 secondary supers | ||
| test("instanceOfI01", obj64); | ||
| // I08, I34 and I60 have the same hash value because | ||
| // the hashing algorithm depends on the type name. | ||
| // hash collision, call into slow path, next slot hit | ||
| test("instanceOfI08", obj34); | ||
| // hash collision, next slot empty | ||
| test("instanceOfI34", obj08); | ||
| // hash collision, call into slow path, next slot miss | ||
| test("instanceOfI60", obj34); | ||
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| // other tests for completion | ||
| test("instanceOfI08", obj60); | ||
| test("instanceOfI34", obj60); | ||
| test("instanceOfI60", obj08); | ||
| } | ||
| } |
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