--- /dev/null 2018-06-17 23:18:20.806999507 +0800 +++ new/src/share/classes/jdk/jfr/internal/instrument/JIMethodInliningAdapter.java 2019-01-29 11:00:08.574708897 +0800 @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2013, 2019, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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 jdk.jfr.internal.instrument; + +import jdk.internal.org.objectweb.asm.Label; +import jdk.internal.org.objectweb.asm.Opcodes; +import jdk.internal.org.objectweb.asm.Type; +import jdk.internal.org.objectweb.asm.commons.LocalVariablesSorter; +import jdk.internal.org.objectweb.asm.commons.Remapper; +import jdk.internal.org.objectweb.asm.commons.RemappingMethodAdapter; + +@Deprecated +final class JIMethodInliningAdapter extends RemappingMethodAdapter { + private final LocalVariablesSorter lvs; + private final Label end; + + public JIMethodInliningAdapter(LocalVariablesSorter mv, Label end, int acc, String desc, Remapper remapper) { + super(acc, desc, mv, remapper); + this.lvs = mv; + this.end = end; + int offset = isStatic(acc) ? 0 : 1; + Type[] args = Type.getArgumentTypes(desc); + for (int i = args.length - 1; i >= 0; i--) { + super.visitVarInsn(args[i].getOpcode(Opcodes.ISTORE), i + offset); + } + if (offset > 0) { + super.visitVarInsn(Opcodes.ASTORE, 0); + } + } + + private boolean isStatic(int acc) { + return (acc & Opcodes.ACC_STATIC) != 0; + } + + @Override + public void visitInsn(int opcode) { + if (opcode == Opcodes.RETURN || opcode == Opcodes.IRETURN + || opcode == Opcodes.ARETURN || opcode == Opcodes.LRETURN) { + super.visitJumpInsn(Opcodes.GOTO, end); + } else { + super.visitInsn(opcode); + } + } + + @Override + public void visitMaxs(int stack, int locals) { + } + + @Override + protected int newLocalMapping(Type type) { + return lvs.newLocal(type); + } +}