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  * @requires vm.opt.final.TieredCompilation
 28  * @library /test/lib /
 29  * @modules java.base/jdk.internal.misc
 30  *          java.management
 31  *
 32  * @build sun.hotspot.WhiteBox
 33  *        compiler.tiered.ConstantGettersTransitionsTest
 34  * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 35  * @run main/othervm/timeout=240 -Xmixed -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 36  *      -XX:+WhiteBoxAPI -XX:+TieredCompilation -XX:-UseCounterDecay
 37  *      -XX:CompileCommand=compileonly,compiler.tiered.ConstantGettersTransitionsTest$ConstantGettersTestCase$TrivialMethods::*
 38  *      compiler.tiered.ConstantGettersTransitionsTest
 39  */
 40 
 41 package compiler.tiered;
 42 
 43 import compiler.whitebox.CompilerWhiteBoxTest;
 44 import jtreg.SkippedException;
 45 
 46 import java.lang.reflect.Executable;
 47 import java.util.concurrent.Callable;
 48 
 49 public class ConstantGettersTransitionsTest extends LevelTransitionTest {
 50     public static void main(String[] args) {
 51         if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) {
 52             throw new SkippedException("Test isn't applicable for non-tiered mode");
 53         }
 54 
 55         // run test cases
 56         for (TestCase testCase : ConstantGettersTestCase.values()) {
 57             new ConstantGettersTransitionsTest(testCase).runTest();
 58         }
 59     }
 60 
 61     @Override
 62     protected boolean isTrivial() {
 63         return true;
 64     }
 65 
 66     private ConstantGettersTransitionsTest(TestCase testCase) {
 67         super(testCase);
 68     }
 69 
 70     private static enum ConstantGettersTestCase implements CompilerWhiteBoxTest.TestCase {
 71         ICONST_M1,
 72         ICONST_0,
 73         ICONST_1,
 74         ICONST_2,
 75         ICONST_3,
 76         ICONST_4,
 77         ICONST_5,
 78         LCONST_0,
 79         LCONST_1,
 80         FCONST_0,
 81         FCONST_1,
 82         FCONST_2,
 83         DCONST_0,
 84         DCONST_1,
 85         DCONST_W,
 86         BYTE,
 87         SHORT,
 88         CHAR;
 89 
 90         private final Executable executable;
 91         private final Callable<Integer> callable;
 92 
 93         @Override
 94         public Executable getExecutable() {
 95             return executable;
 96         }
 97 
 98         @Override
 99         public Callable<Integer> getCallable() {
100             return callable;
101         }
102 
103         @Override
104         public boolean isOsr() {
105             return false;
106         }
107 
108         private ConstantGettersTestCase() {
109             String name = "make" + this.name();
110             this.executable = MethodHelper.getMethod(TrivialMethods.class, name);
111             this.callable = MethodHelper.getCallable(new TrivialMethods(), name);
112         }
113 
114         /**
115          * Contains methods that load constants with certain types of bytecodes
116          * See JVMS 2.11.2. Load and Store Instructions
117          * Note that it doesn't have a method for ldc_w instruction
118          */
119         private static class TrivialMethods {
120             public static int makeICONST_M1() {
121                 return -1;
122             }
123 
124             public static int makeICONST_0() {
125                 return 0;
126             }
127 
128             public static int makeICONST_1() {
129                 return 1;
130             }
131 
132             public static int makeICONST_2() {
133                 return 2;
134             }
135 
136             public static int makeICONST_3() {
137                 return 3;
138             }
139 
140             public static int makeICONST_4() {
141                 return 4;
142             }
143 
144             public static int makeICONST_5() {
145                 return 5;
146             }
147 
148             public static long makeLCONST_0() {
149                 return 0L;
150             }
151 
152             public static long makeLCONST_1() {
153                 return 1L;
154             }
155 
156             public static float makeFCONST_0() {
157                 return 0F;
158             }
159 
160             public static float makeFCONST_1() {
161                 return 1F;
162             }
163 
164             public static float makeFCONST_2() {
165                 return 2F;
166             }
167 
168             public static double makeDCONST_0() {
169                 return 0D;
170             }
171 
172             public static double makeDCONST_1() {
173                 return 1D;
174             }
175 
176             public static double makeDCONST_W() {
177                 // ldc2_w
178                 return Double.MAX_VALUE;
179             }
180 
181             public static Object makeOBJECT() {
182                 // aconst_null
183                 return null;
184             }
185 
186             public static byte makeBYTE() {
187                 // bipush
188                 return (byte) 0x7F;
189             }
190 
191             public static short makeSHORT() {
192                 // sipush
193                 return (short) 0x7FFF;
194             }
195 
196             public static char makeCHAR() {
197                 // ldc
198                 return (char) 0xFFFF;
199             }
200 
201             public static boolean makeBOOLEAN() {
202                 return true;
203             }
204         }
205     }
206 }