001/*
002 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.replacements;
024
025import jdk.internal.jvmci.meta.*;
026import jdk.internal.jvmci.meta.MethodHandleAccessProvider.*;
027
028import com.oracle.graal.graph.*;
029import com.oracle.graal.graphbuilderconf.*;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
032import com.oracle.graal.replacements.nodes.*;
033
034public class MethodHandlePlugin implements NodePlugin {
035    private final MethodHandleAccessProvider methodHandleAccess;
036
037    public MethodHandlePlugin(MethodHandleAccessProvider methodHandleAccess) {
038        this.methodHandleAccess = methodHandleAccess;
039    }
040
041    @Override
042    public boolean handleInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) {
043        IntrinsicMethod intrinsicMethod = methodHandleAccess.lookupMethodHandleIntrinsic(method);
044        if (intrinsicMethod != null) {
045            InvokeKind invokeKind = b.getInvokeKind();
046            if (invokeKind != InvokeKind.Static) {
047                args[0] = b.nullCheckedValue(args[0]);
048            }
049            JavaType invokeReturnType = b.getInvokeReturnType();
050            InvokeNode invoke = MethodHandleNode.tryResolveTargetInvoke(b.getAssumptions(), b.getConstantReflection().getMethodHandleAccess(), intrinsicMethod, method, b.bci(), invokeReturnType, args);
051            if (invoke == null) {
052                MethodHandleNode methodHandleNode = new MethodHandleNode(intrinsicMethod, invokeKind, method, b.bci(), invokeReturnType, args);
053                if (invokeReturnType.getKind() == Kind.Void) {
054                    b.add(methodHandleNode);
055                } else {
056                    b.addPush(invokeReturnType.getKind(), methodHandleNode);
057                }
058            } else {
059                CallTargetNode callTarget = invoke.callTarget();
060                NodeInputList<ValueNode> argumentsList = callTarget.arguments();
061                for (int i = 0; i < argumentsList.size(); ++i) {
062                    argumentsList.initialize(i, b.recursiveAppend(argumentsList.get(i)));
063                }
064
065                // If a MemberName suffix argument is dropped, the replaced call cannot
066                // deoptimized since the necessary frame state cannot be reconstructed.
067                // As such, it needs to recursively inline everything.
068                boolean inlineEverything = args.length != argumentsList.size();
069                b.handleReplacedInvoke(invoke.getInvokeKind(), callTarget.targetMethod(), argumentsList.toArray(new ValueNode[argumentsList.size()]), inlineEverything);
070            }
071            return true;
072        }
073        return false;
074    }
075}