--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/memory/FixedAccessNode.java 2016-12-09 00:55:53.624253329 -0800 @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2011, 2016, 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.nodes.memory; + +import org.graalvm.compiler.core.common.LocationIdentity; +import org.graalvm.compiler.core.common.type.Stamp; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.nodeinfo.InputType; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.DeoptimizingFixedWithNextNode; +import org.graalvm.compiler.nodes.FrameState; +import org.graalvm.compiler.nodes.extended.GuardingNode; +import org.graalvm.compiler.nodes.memory.address.AddressNode; + +/** + * Accesses a value at an memory address specified by an {@linkplain #address address}. The access + * does not include a null check on the object. + */ +@NodeInfo +public abstract class FixedAccessNode extends DeoptimizingFixedWithNextNode implements Access { + public static final NodeClass TYPE = NodeClass.create(FixedAccessNode.class); + + @OptionalInput(InputType.Guard) protected GuardingNode guard; + + @Input(InputType.Association) AddressNode address; + protected final LocationIdentity location; + + protected boolean nullCheck; + protected BarrierType barrierType; + + @Override + public AddressNode getAddress() { + return address; + } + + public void setAddress(AddressNode address) { + updateUsages(this.address, address); + this.address = address; + } + + @Override + public LocationIdentity getLocationIdentity() { + return location; + } + + public boolean getNullCheck() { + return nullCheck; + } + + public void setNullCheck(boolean check) { + this.nullCheck = check; + } + + protected FixedAccessNode(NodeClass c, AddressNode address, LocationIdentity location, Stamp stamp) { + this(c, address, location, stamp, BarrierType.NONE); + } + + protected FixedAccessNode(NodeClass c, AddressNode address, LocationIdentity location, Stamp stamp, BarrierType barrierType) { + this(c, address, location, stamp, null, barrierType, false, null); + } + + protected FixedAccessNode(NodeClass c, AddressNode address, LocationIdentity location, Stamp stamp, GuardingNode guard, BarrierType barrierType, boolean nullCheck, + FrameState stateBefore) { + super(c, stamp, stateBefore); + this.address = address; + this.location = location; + this.guard = guard; + this.barrierType = barrierType; + this.nullCheck = nullCheck; + } + + @Override + public boolean canDeoptimize() { + return nullCheck; + } + + @Override + public GuardingNode getGuard() { + return guard; + } + + @Override + public void setGuard(GuardingNode guard) { + updateUsagesInterface(this.guard, guard); + this.guard = guard; + } + + @Override + public BarrierType getBarrierType() { + return barrierType; + } +}