1 /* 2 * Copyright (c) 2019, 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 26 package org.graalvm.compiler.core.test; 27 28 import org.junit.Test; 29 import org.objectweb.asm.ClassWriter; 30 import org.objectweb.asm.MethodVisitor; 31 import org.objectweb.asm.Label; 32 33 import jdk.vm.ci.meta.ResolvedJavaMethod; 34 35 public class TwoSlotMarkerClearingTest extends CustomizedBytecodePatternTest { 36 37 @Test 38 public void testTwoSlotMarkerClearing() throws ClassNotFoundException { 39 Class<?> testClass = getClass("Test"); 40 ResolvedJavaMethod t1 = getResolvedJavaMethod(testClass, "t1"); 41 parseForCompile(t1); 42 ResolvedJavaMethod t2 = getResolvedJavaMethod(testClass, "t2"); 43 parseForCompile(t2); 44 } 45 46 @Override 47 protected byte[] generateClass(String className) { 48 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES); 49 cw.visit(52, ACC_SUPER | ACC_PUBLIC, className, null, "java/lang/Object", null); 50 51 String getDescriptor = "(" + "JII" + ")" + "I"; 52 MethodVisitor t1 = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "t1", getDescriptor, null, null); 53 t1.visitCode(); 54 t1.visitVarInsn(ILOAD, 2); 55 t1.visitVarInsn(ISTORE, 0); 56 t1.visitVarInsn(ILOAD, 0); 57 Label label = new Label(); 58 t1.visitJumpInsn(IFGE, label); 59 t1.visitVarInsn(ILOAD, 0); 60 t1.visitInsn(IRETURN); 61 t1.visitLabel(label); 62 t1.visitVarInsn(ILOAD, 3); 63 t1.visitInsn(IRETURN); 64 t1.visitMaxs(4, 1); 65 t1.visitEnd(); 66 67 getDescriptor = "(" + "IJIJ" + ")" + "J"; 68 MethodVisitor t2 = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "t2", getDescriptor, null, null); 69 t2.visitCode(); 70 t2.visitVarInsn(LLOAD, 1); 71 t2.visitVarInsn(LSTORE, 0); 72 t2.visitVarInsn(ILOAD, 3); 73 Label label1 = new Label(); 74 t2.visitJumpInsn(IFGE, label1); 75 t2.visitVarInsn(LLOAD, 0); 76 t2.visitInsn(LRETURN); 77 t2.visitLabel(label1); 78 t2.visitVarInsn(LLOAD, 4); 79 t2.visitInsn(LRETURN); 80 t2.visitMaxs(6, 2); 81 t2.visitEnd(); 82 83 cw.visitEnd(); 84 return cw.toByteArray(); 85 } 86 }