Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/AbstractWriteNode.java @ 19526:8fc336a04d77
Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 20 Feb 2015 22:22:55 +0100 |
parents | 880717e44675 |
children |
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/* * Copyright (c) 2011, 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.nodes.extended; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; @NodeInfo(allowedUsageTypes = {InputType.Memory}) public abstract class AbstractWriteNode extends FixedAccessNode implements StateSplit, MemoryCheckpoint.Single, MemoryAccess, GuardingNode { public static final NodeClass<AbstractWriteNode> TYPE = NodeClass.create(AbstractWriteNode.class); @Input ValueNode value; @OptionalInput(InputType.State) FrameState stateAfter; @OptionalInput(InputType.Memory) Node lastLocationAccess; protected final boolean initialization; public FrameState stateAfter() { return stateAfter; } public void setStateAfter(FrameState x) { assert x == null || x.isAlive() : "frame state must be in a graph"; updateUsages(stateAfter, x); stateAfter = x; } public boolean hasSideEffect() { return true; } public ValueNode value() { return value; } /** * Returns whether this write is the initialization of the written location. If it is true, the * old value of the memory location is either uninitialized or zero. If it is false, the memory * location is guaranteed to contain a valid value or zero. */ public boolean isInitialization() { return initialization; } protected AbstractWriteNode(NodeClass<? extends AbstractWriteNode> c, ValueNode object, ValueNode value, ValueNode location, BarrierType barrierType) { this(c, object, value, location, barrierType, false); } protected AbstractWriteNode(NodeClass<? extends AbstractWriteNode> c, ValueNode object, ValueNode value, ValueNode location, BarrierType barrierType, boolean initialization) { super(c, object, location, StampFactory.forVoid(), barrierType); this.value = value; this.initialization = initialization; } protected AbstractWriteNode(NodeClass<? extends AbstractWriteNode> c, ValueNode object, ValueNode value, ValueNode location, BarrierType barrierType, GuardingNode guard, boolean initialization) { super(c, object, location, StampFactory.forVoid(), guard, barrierType, false, null); this.value = value; this.initialization = initialization; } @Override public boolean isAllowedUsageType(InputType type) { return (type == InputType.Guard && getNullCheck()) ? true : super.isAllowedUsageType(type); } @Override public LocationIdentity getLocationIdentity() { return location().getLocationIdentity(); } public MemoryNode getLastLocationAccess() { return (MemoryNode) lastLocationAccess; } public void setLastLocationAccess(MemoryNode lla) { Node newLla = ValueNodeUtil.asNode(lla); updateUsages(lastLocationAccess, newLla); lastLocationAccess = newLla; } }