rev 52889 : 8214023: Update Graal

   1 /*
   2  * Copyright (c) 2017, 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 package org.graalvm.compiler.core.test;
  26 
  27 import java.util.ArrayList;
  28 import java.util.List;
  29 
  30 import org.junit.Test;
  31 import org.junit.runner.RunWith;
  32 import org.junit.runners.Parameterized;
  33 import org.junit.runners.Parameterized.Parameters;
  34 import org.objectweb.asm.ClassWriter;
  35 import org.objectweb.asm.FieldVisitor;
  36 import org.objectweb.asm.MethodVisitor;
  37 
  38 import jdk.vm.ci.meta.JavaKind;
  39 import jdk.vm.ci.meta.ResolvedJavaMethod;
  40 
  41 @RunWith(Parameterized.class)
  42 public class SubWordReturnTest extends CustomizedBytecodePatternTest {
  43 
  44     private final JavaKind kind;
  45     private final int value;
  46 
  47     @Parameters(name = "{0}, {1}")
  48     public static List<Object[]> data() {
  49         ArrayList<Object[]> ret = new ArrayList<>();
  50         for (int i : new int[]{1000000, 1000001, -1000000, -1}) {
  51             ret.add(new Object[]{JavaKind.Boolean, i});
  52             ret.add(new Object[]{JavaKind.Byte, i});
  53             ret.add(new Object[]{JavaKind.Short, i});
  54             ret.add(new Object[]{JavaKind.Char, i});
  55         }
  56         return ret;
  57     }
  58 
  59     public SubWordReturnTest(JavaKind kind, int value) {
  60         this.kind = kind;
  61         this.value = value;
  62     }
  63 
  64     @Test
  65     public void testSubWordReturn() throws ClassNotFoundException {
  66         Class<?> testClass = getClass(SubWordReturnTest.class.getName() + "$" + kind.toString() + "Getter");
  67         ResolvedJavaMethod method = getResolvedJavaMethod(testClass, "testSnippet");
  68         test(method, null);
  69     }
  70 
  71     /**
  72      * {@link #generateClass} generates a class looking like this for the types boolean, byte,
  73      * short, and char.
  74      */
  75     static class ByteGetter {
  76 
  77         // private static int intField = 1000000;
  78 
  79         private static byte get() {
  80             // GETSTATIC intField
  81             // IRETURN
  82             return 0;
  83         }
  84 
  85         public static int testByteSnippet() {
  86             return get();
  87         }
  88     }
  89 
  90     @Override
  91     protected byte[] generateClass(String internalClassName) {
  92         ClassWriter cw = new ClassWriter(0);
  93         cw.visit(52, ACC_SUPER | ACC_PUBLIC, internalClassName, null, "java/lang/Object", null);
  94 
  95         FieldVisitor intField = cw.visitField(ACC_PRIVATE | ACC_STATIC, "intField", "I", null, value);
  96         intField.visitEnd();
  97 
  98         MethodVisitor get = cw.visitMethod(ACC_PRIVATE | ACC_STATIC, "get", "()" + kind.getTypeChar(), null, null);
  99         get.visitCode();
 100         get.visitFieldInsn(GETSTATIC, internalClassName, "intField", "I");
 101         get.visitInsn(IRETURN);
 102         get.visitMaxs(1, 0);
 103         get.visitEnd();
 104 
 105         MethodVisitor snippet = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "testSnippet", "()I", null, null);
 106         snippet.visitCode();
 107         snippet.visitMethodInsn(INVOKESTATIC, internalClassName, "get", "()" + kind.getTypeChar(), false);
 108         snippet.visitInsn(IRETURN);
 109         snippet.visitMaxs(1, 0);
 110         snippet.visitEnd();
 111 
 112         cw.visitEnd();
 113         return cw.toByteArray();
 114     }
 115 
 116 }
--- EOF ---