| /* |
| * Copyright (c) 2017, 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. |
| * |
| * 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 org.graalvm.compiler.core.test; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.MethodVisitor; |
| |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| @RunWith(Parameterized.class) |
| public class SubWordReturnTest extends CustomizedBytecodePatternTest { |
| |
| private final JavaKind kind; |
| private final int value; |
| |
| @Parameters(name = "{0}, {1}") |
| public static List<Object[]> data() { |
| ArrayList<Object[]> ret = new ArrayList<>(); |
| for (int i : new int[]{1000000, 1000001, -1000000, -1}) { |
| ret.add(new Object[]{JavaKind.Boolean, i}); |
| ret.add(new Object[]{JavaKind.Byte, i}); |
| ret.add(new Object[]{JavaKind.Short, i}); |
| ret.add(new Object[]{JavaKind.Char, i}); |
| } |
| return ret; |
| } |
| |
| public SubWordReturnTest(JavaKind kind, int value) { |
| this.kind = kind; |
| this.value = value; |
| } |
| |
| @Test |
| public void testSubWordReturn() throws ClassNotFoundException { |
| Class<?> testClass = getClass(SubWordReturnTest.class.getName() + "$" + kind.toString() + "Getter"); |
| ResolvedJavaMethod method = getResolvedJavaMethod(testClass, "testSnippet"); |
| test(method, null); |
| } |
| |
| /** |
| * {@link #generateClass} generates a class looking like this for the types boolean, byte, |
| * short, and char. |
| */ |
| static class ByteGetter { |
| |
| // private static int intField = 1000000; |
| |
| private static byte get() { |
| // GETSTATIC intField |
| // IRETURN |
| return 0; |
| } |
| |
| public static int testByteSnippet() { |
| return get(); |
| } |
| } |
| |
| @Override |
| protected byte[] generateClass(String internalClassName) { |
| ClassWriter cw = new ClassWriter(0); |
| cw.visit(52, ACC_SUPER | ACC_PUBLIC, internalClassName, null, "java/lang/Object", null); |
| |
| FieldVisitor intField = cw.visitField(ACC_PRIVATE | ACC_STATIC, "intField", "I", null, value); |
| intField.visitEnd(); |
| |
| MethodVisitor get = cw.visitMethod(ACC_PRIVATE | ACC_STATIC, "get", "()" + kind.getTypeChar(), null, null); |
| get.visitCode(); |
| get.visitFieldInsn(GETSTATIC, internalClassName, "intField", "I"); |
| get.visitInsn(IRETURN); |
| get.visitMaxs(1, 0); |
| get.visitEnd(); |
| |
| MethodVisitor snippet = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "testSnippet", "()I", null, null); |
| snippet.visitCode(); |
| snippet.visitMethodInsn(INVOKESTATIC, internalClassName, "get", "()" + kind.getTypeChar(), false); |
| snippet.visitInsn(IRETURN); |
| snippet.visitMaxs(1, 0); |
| snippet.visitEnd(); |
| |
| cw.visitEnd(); |
| return cw.toByteArray(); |
| } |
| |
| } |