Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/CallSiteTargetNode.java @ 18262:f7d45e2426d4
converted HotSpotObjectConstant to an interface
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 05 Nov 2014 21:07:59 +0100 |
parents | 9619ba4daf4c |
children | ffcbc50063a3 |
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/* * 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 com.oracle.graal.hotspot.replacements; import java.lang.invoke.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.replacements.nodes.*; @NodeInfo public class CallSiteTargetNode extends MacroStateSplitNode implements Canonicalizable, Lowerable { public static CallSiteTargetNode create(Invoke invoke) { return new CallSiteTargetNode(invoke); } protected CallSiteTargetNode(Invoke invoke) { super(invoke); } private ValueNode getCallSite() { return arguments.get(0); } private ConstantNode getConstantCallTarget(MetaAccessProvider metaAccess, Assumptions assumptions) { if (getCallSite().isConstant() && !getCallSite().isNullConstant()) { CallSite callSite = (CallSite) HotSpotObjectConstantImpl.asObject(getCallSite().asJavaConstant()); MethodHandle target = callSite.getTarget(); if (!(callSite instanceof ConstantCallSite)) { if (assumptions == null || !assumptions.useOptimisticAssumptions()) { return null; } assumptions.record(new Assumptions.CallSiteTargetValue(callSite, target)); } return ConstantNode.forConstant(HotSpotObjectConstantImpl.forObject(target), metaAccess, graph()); } return null; } @Override public Node canonical(CanonicalizerTool tool) { ConstantNode target = getConstantCallTarget(tool.getMetaAccess(), tool.assumptions()); if (target != null) { return target; } return this; } @Override public void lower(LoweringTool tool) { ConstantNode target = getConstantCallTarget(tool.getMetaAccess(), tool.assumptions()); if (target != null) { graph().replaceFixedWithFloating(this, target); } else { InvokeNode invoke = createInvoke(); graph().replaceFixedWithFixed(this, invoke); invoke.lower(tool); } } }