--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/CallSiteTargetNode.java 2016-12-09 00:49:50.753258055 -0800 @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2013, 2014, 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.hotspot.replacements; + +import org.graalvm.compiler.core.common.type.StampPair; +import org.graalvm.compiler.graph.Node; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.graph.spi.Canonicalizable; +import org.graalvm.compiler.graph.spi.CanonicalizerTool; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind; +import org.graalvm.compiler.nodes.ConstantNode; +import org.graalvm.compiler.nodes.InvokeNode; +import org.graalvm.compiler.nodes.ValueNode; +import org.graalvm.compiler.nodes.spi.Lowerable; +import org.graalvm.compiler.nodes.spi.LoweringTool; +import org.graalvm.compiler.replacements.nodes.MacroStateSplitNode; + +import jdk.vm.ci.hotspot.HotSpotObjectConstant; +import jdk.vm.ci.meta.Assumptions; +import jdk.vm.ci.meta.JavaConstant; +import jdk.vm.ci.meta.MetaAccessProvider; +import jdk.vm.ci.meta.ResolvedJavaMethod; + +@NodeInfo +public final class CallSiteTargetNode extends MacroStateSplitNode implements Canonicalizable, Lowerable { + + public static final NodeClass TYPE = NodeClass.create(CallSiteTargetNode.class); + + public CallSiteTargetNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, StampPair returnStamp, ValueNode receiver) { + super(TYPE, invokeKind, targetMethod, bci, returnStamp, receiver); + } + + private ValueNode getCallSite() { + return arguments.get(0); + } + + public static ConstantNode tryFold(ValueNode callSite, MetaAccessProvider metaAccess, Assumptions assumptions) { + if (callSite != null && callSite.isConstant() && !callSite.isNullConstant()) { + HotSpotObjectConstant c = (HotSpotObjectConstant) callSite.asConstant(); + JavaConstant target = c.getCallSiteTarget(assumptions); + if (target != null) { + return ConstantNode.forConstant(target, metaAccess); + } + } + return null; + } + + @Override + public Node canonical(CanonicalizerTool tool) { + ConstantNode target = tryFold(getCallSite(), tool.getMetaAccess(), graph().getAssumptions()); + if (target != null) { + return target; + } + + return this; + } + + @Override + public void lower(LoweringTool tool) { + ConstantNode target = tryFold(getCallSite(), tool.getMetaAccess(), graph().getAssumptions()); + + if (target != null) { + graph().replaceFixedWithFloating(this, target); + } else { + InvokeNode invoke = createInvoke(); + graph().replaceFixedWithFixed(this, invoke); + invoke.lower(tool); + } + } +}