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package org.graalvm.compiler.nodes.memory;

import static org.graalvm.compiler.nodeinfo.InputType.Memory;

import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.graph.IterableNodeType;
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;
import jdk.internal.vm.compiler.word.LocationIdentity;

Accesses a value at an memory address specified by an address. The access does not include a null check on the object.
/** * 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 AddressableMemoryAccess, GuardedMemoryAccess, OnHeapMemoryAccess, IterableNodeType { public static final NodeClass<FixedAccessNode> TYPE = NodeClass.create(FixedAccessNode.class); @OptionalInput(InputType.Guard) protected GuardingNode guard; @Input(InputType.Association) AddressNode address; @OptionalInput(Memory) MemoryKill lastLocationAccess; protected final LocationIdentity location; protected boolean nullCheck; protected BarrierType barrierType; @Override public AddressNode getAddress() { return address; } @Override 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<? extends FixedAccessNode> c, AddressNode address, LocationIdentity location, Stamp stamp) { this(c, address, location, stamp, BarrierType.NONE); } protected FixedAccessNode(NodeClass<? extends FixedAccessNode> c, AddressNode address, LocationIdentity location, Stamp stamp, BarrierType barrierType) { this(c, address, location, stamp, null, barrierType, false, null); } protected FixedAccessNode(NodeClass<? extends FixedAccessNode> 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 MemoryKill getLastLocationAccess() { return lastLocationAccess; } @Override public void setLastLocationAccess(MemoryKill lla) { updateUsagesInterface(lastLocationAccess, lla); lastLocationAccess = lla; } @Override public BarrierType getBarrierType() { return barrierType; } }