1 /*
  2  * Copyright (c) 2014, 2021, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  */
 23 
 24 /**
 25  * @test ConstantGettersTransitionsTest
 26  * @summary Test the correctness of compilation level transitions for constant getters methods
 27  * @library /test/lib /
 28  * @modules java.base/jdk.internal.misc
 29  *          java.management
 30  *
 31  * @build sun.hotspot.WhiteBox
 32  *        compiler.tiered.ConstantGettersTransitionsTest
 33  * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 34  * @run main/othervm/timeout=240 -Xmixed -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 35  *      -XX:+WhiteBoxAPI -XX:+TieredCompilation -XX:-UseCounterDecay
 36  *      -XX:CompileCommand=compileonly,compiler.tiered.ConstantGettersTransitionsTest$ConstantGettersTestCase$TrivialMethods::*
 37  *      compiler.tiered.ConstantGettersTransitionsTest
 38  */
 39 
 40 package compiler.tiered;
 41 
 42 import compiler.whitebox.CompilerWhiteBoxTest;
 43 import jtreg.SkippedException;
 44 
 45 import java.lang.reflect.Executable;
 46 import java.util.concurrent.Callable;
 47 
 48 public class ConstantGettersTransitionsTest extends LevelTransitionTest {
 49     public static void main(String[] args) {
 50         if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) {
 51             throw new SkippedException("Test isn't applicable for non-tiered mode");
 52         }
 53 
 54         // run test cases
 55         for (TestCase testCase : ConstantGettersTestCase.values()) {
 56             new ConstantGettersTransitionsTest(testCase).runTest();
 57         }
 58     }
 59 
 60     @Override
 61     protected boolean isTrivial() {
 62         return true;
 63     }
 64 
 65     private ConstantGettersTransitionsTest(TestCase testCase) {
 66         super(testCase);
 67     }
 68 
 69     private static enum ConstantGettersTestCase implements CompilerWhiteBoxTest.TestCase {
 70         ICONST_M1,
 71         ICONST_0,
 72         ICONST_1,
 73         ICONST_2,
 74         ICONST_3,
 75         ICONST_4,
 76         ICONST_5,
 77         LCONST_0,
 78         LCONST_1,
 79         FCONST_0,
 80         FCONST_1,
 81         FCONST_2,
 82         DCONST_0,
 83         DCONST_1,
 84         DCONST_W,
 85         BYTE,
 86         SHORT,
 87         CHAR;
 88 
 89         private final Executable executable;
 90         private final Callable<Integer> callable;
 91 
 92         @Override
 93         public Executable getExecutable() {
 94             return executable;
 95         }
 96 
 97         @Override
 98         public Callable<Integer> getCallable() {
 99             return callable;
100         }
101 
102         @Override
103         public boolean isOsr() {
104             return false;
105         }
106 
107         private ConstantGettersTestCase() {
108             String name = "make" + this.name();
109             this.executable = MethodHelper.getMethod(TrivialMethods.class, name);
110             this.callable = MethodHelper.getCallable(new TrivialMethods(), name);
111         }
112 
113         /**
114          * Contains methods that load constants with certain types of bytecodes
115          * See JVMS 2.11.2. Load and Store Instructions
116          * Note that it doesn't have a method for ldc_w instruction
117          */
118         private static class TrivialMethods {
119             public static int makeICONST_M1() {
120                 return -1;
121             }
122 
123             public static int makeICONST_0() {
124                 return 0;
125             }
126 
127             public static int makeICONST_1() {
128                 return 1;
129             }
130 
131             public static int makeICONST_2() {
132                 return 2;
133             }
134 
135             public static int makeICONST_3() {
136                 return 3;
137             }
138 
139             public static int makeICONST_4() {
140                 return 4;
141             }
142 
143             public static int makeICONST_5() {
144                 return 5;
145             }
146 
147             public static long makeLCONST_0() {
148                 return 0L;
149             }
150 
151             public static long makeLCONST_1() {
152                 return 1L;
153             }
154 
155             public static float makeFCONST_0() {
156                 return 0F;
157             }
158 
159             public static float makeFCONST_1() {
160                 return 1F;
161             }
162 
163             public static float makeFCONST_2() {
164                 return 2F;
165             }
166 
167             public static double makeDCONST_0() {
168                 return 0D;
169             }
170 
171             public static double makeDCONST_1() {
172                 return 1D;
173             }
174 
175             public static double makeDCONST_W() {
176                 // ldc2_w
177                 return Double.MAX_VALUE;
178             }
179 
180             public static Object makeOBJECT() {
181                 // aconst_null
182                 return null;
183             }
184 
185             public static byte makeBYTE() {
186                 // bipush
187                 return (byte) 0x7F;
188             }
189 
190             public static short makeSHORT() {
191                 // sipush
192                 return (short) 0x7FFF;
193             }
194 
195             public static char makeCHAR() {
196                 // ldc
197                 return (char) 0xFFFF;
198             }
199 
200             public static boolean makeBOOLEAN() {
201                 return true;
202             }
203         }
204     }
205 }