001/* 002 * Copyright (c) 2013, 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.nodes; 024 025import jdk.internal.jvmci.code.*; 026import jdk.internal.jvmci.common.*; 027import jdk.internal.jvmci.meta.*; 028 029import com.oracle.graal.graph.*; 030import com.oracle.graal.nodeinfo.*; 031import com.oracle.graal.nodes.CallTargetNode.InvokeKind; 032import com.oracle.graal.nodes.*; 033import com.oracle.graal.nodes.java.*; 034import com.oracle.graal.nodes.memory.*; 035 036/** 037 * This is an extension of {@link MacroNode} that is a {@link StateSplit} and a 038 * {@link MemoryCheckpoint}. 039 */ 040@NodeInfo 041public abstract class MacroStateSplitNode extends MacroNode implements StateSplit, MemoryCheckpoint.Single { 042 043 public static final NodeClass<MacroStateSplitNode> TYPE = NodeClass.create(MacroStateSplitNode.class); 044 @OptionalInput(InputType.State) protected FrameState stateAfter; 045 046 protected MacroStateSplitNode(NodeClass<? extends MacroNode> c, InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, JavaType returnType, ValueNode... arguments) { 047 super(c, invokeKind, targetMethod, bci, returnType, arguments); 048 } 049 050 @Override 051 public FrameState stateAfter() { 052 return stateAfter; 053 } 054 055 public void setStateAfter(FrameState x) { 056 assert x == null || x.isAlive() : "frame state must be in a graph"; 057 updateUsages(stateAfter, x); 058 stateAfter = x; 059 } 060 061 public boolean hasSideEffect() { 062 return true; 063 } 064 065 public LocationIdentity getLocationIdentity() { 066 return LocationIdentity.any(); 067 } 068 069 protected void replaceSnippetInvokes(StructuredGraph snippetGraph) { 070 for (MethodCallTargetNode call : snippetGraph.getNodes(MethodCallTargetNode.TYPE)) { 071 Invoke invoke = call.invoke(); 072 if (!call.targetMethod().equals(getTargetMethod())) { 073 throw new JVMCIError("unexpected invoke %s in snippet", getClass().getSimpleName()); 074 } 075 assert invoke.stateAfter().bci == BytecodeFrame.AFTER_BCI; 076 // Here we need to fix the bci of the invoke 077 InvokeNode newInvoke = snippetGraph.add(new InvokeNode(invoke.callTarget(), getBci())); 078 newInvoke.setStateAfter(invoke.stateAfter()); 079 snippetGraph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke); 080 } 081 } 082}