package org.graalvm.compiler.nodes.extended;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.graph.spi.Canonicalizable;
import org.graalvm.compiler.graph.spi.CanonicalizerTool;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.NodeView;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import org.graalvm.compiler.nodes.spi.ValueProxy;
@NodeInfo(cycles = CYCLES_0, size = SIZE_0)
public class FixedValueAnchorNode extends FixedWithNextNode implements LIRLowerable, ValueProxy, GuardingNode, Canonicalizable {
public static final NodeClass<FixedValueAnchorNode> TYPE = NodeClass.create(FixedValueAnchorNode.class);
@OptionalInput ValueNode object;
private Stamp predefinedStamp;
public ValueNode object() {
return object;
}
protected FixedValueAnchorNode(NodeClass<? extends FixedValueAnchorNode> c, ValueNode object) {
super(c, object == null ? StampFactory.forVoid() : object.stamp(NodeView.DEFAULT));
this.object = object;
}
public FixedValueAnchorNode(ValueNode object) {
this(TYPE, object);
}
public FixedValueAnchorNode(ValueNode object, Stamp predefinedStamp) {
super(TYPE, predefinedStamp);
this.object = object;
this.predefinedStamp = predefinedStamp;
}
@Override
public boolean inferStamp() {
if (predefinedStamp == null && object != null) {
return updateStamp(stamp.join(object.stamp(NodeView.DEFAULT)));
} else {
return false;
}
}
@Override
public Node canonical(CanonicalizerTool tool) {
if (tool.allUsagesAvailable() && hasNoUsages()) {
return null;
}
return this;
}
@NodeIntrinsic
public static native Object getObject(Object object);
@Override
public void generate(NodeLIRBuilderTool generator) {
generator.setResult(this, generator.operand(object));
}
@Override
public ValueNode getOriginalNode() {
return object;
}
@Override
public GuardingNode getGuard() {
return this;
}
}