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view graal/com.oracle.max.graal.hotspot/src/com/oracle/graal/hotspot/nodes/TailcallNode.java @ 5060:4ed4295ce15f
Update import statements.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Thu, 08 Mar 2012 19:11:12 +0100 |
parents | ed559a528128 |
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/* * Copyright (c) 2011, 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.nodes; import java.lang.reflect.*; import java.util.*; import com.oracle.max.cri.ci.*; import com.oracle.max.cri.ri.*; import com.oracle.graal.compiler.gen.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.target.amd64.*; import com.oracle.graal.java.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Performs a tail call to the specified target compiled method, with the parameter taken from the supplied FrameState. */ public class TailcallNode extends FixedWithNextNode implements LIRLowerable { @Input private final FrameState frameState; @Input private final ValueNode target; /** * Creates a TailcallNode. * @param target points to the start of an nmethod * @param frameState the parameters will be taken from this FrameState */ public TailcallNode(ValueNode target, FrameState frameState) { super(StampFactory.illegal()); this.target = target; this.frameState = frameState; } @Override public void generate(LIRGeneratorTool generator) { LIRGenerator gen = (LIRGenerator) generator; HotSpotVMConfig config = CompilerImpl.getInstance().getConfig(); RiResolvedMethod method = frameState.method(); boolean isStatic = Modifier.isStatic(method.accessFlags()); CiKind[] signature = CiUtil.signatureToKinds(method.signature(), isStatic ? null : method.holder().kind(true)); CiCallingConvention cc = gen.frameMap().registerConfig.getCallingConvention(CiCallingConvention.Type.JavaCall, signature, gen.target(), false); gen.frameMap().callsMethod(cc, CiCallingConvention.Type.JavaCall); // TODO (aw): I think this is unnecessary for a tail call. List<ValueNode> parameters = new ArrayList<>(); for (int i = 0, slot = 0; i < cc.locations.length; i++, slot += FrameStateBuilder.stackSlots(frameState.localAt(slot).kind())) { parameters.add(frameState.localAt(slot)); } List<CiValue> argList = gen.visitInvokeArguments(cc, parameters); CiValue entry = gen.emitLoad(new CiAddress(CiKind.Long, gen.operand(target), config.nmethodEntryOffset), false); gen.append(new AMD64TailcallOp(argList, entry, cc.locations)); } }