Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/AllocaNode.java @ 17450:45b45f902bed
removed Node generation (GRAAL-857)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 15 Oct 2014 15:35:33 +0200 |
parents | c9bb0da795d4 |
children | c6086a18c9ce |
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/* * Copyright (c) 2012, 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.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * Reserves a block of memory in the stack frame of a method. The block is reserved in the frame for * the entire execution of the associated method. */ @NodeInfo public class AllocaNode extends FixedWithNextNode implements LIRLowerable { /** * The number of slots in block. */ protected final int slots; /** * The indexes of the object pointer slots in the block. Each such object pointer slot must be * initialized before any safepoint in the method otherwise the garbage collector will see * garbage values when processing these slots. */ protected final BitSet objects; public static AllocaNode create(int slots, BitSet objects) { return new AllocaNode(slots, objects); } protected AllocaNode(int slots, BitSet objects) { super(StampFactory.forKind(HotSpotGraalRuntime.getHostWordKind())); this.slots = slots; this.objects = objects; } @Override public void generate(NodeLIRBuilderTool gen) { StackSlot array = gen.getLIRGeneratorTool().getResult().getFrameMap().allocateStackSlots(slots, objects, null); Value result = gen.getLIRGeneratorTool().emitAddress(array); gen.setResult(this, result); } }