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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

import org.graalvm.compiler.api.replacements.Snippet;
import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

import jdk.vm.ci.meta.AllocatableValue;
import jdk.vm.ci.meta.JavaKind;

Intrinsification for getting the address of an object. The code path(s) between a call to get(Object) and all uses of the returned value must not contain safepoints. This can only be guaranteed if used in a snippet that is instantiated after frame state assignment. ComputeObjectAddressNode should generally be used in preference to this node.
/** * Intrinsification for getting the address of an object. The code path(s) between a call to * {@link #get(Object)} and all uses of the returned value must not contain safepoints. This can * only be guaranteed if used in a snippet that is instantiated after frame state assignment. * {@link ComputeObjectAddressNode} should generally be used in preference to this node. */
@NodeInfo(cycles = CYCLES_2, size = SIZE_1) public final class GetObjectAddressNode extends FixedWithNextNode implements LIRLowerable { public static final NodeClass<GetObjectAddressNode> TYPE = NodeClass.create(GetObjectAddressNode.class); @Input ValueNode object; public GetObjectAddressNode(ValueNode obj) { super(TYPE, StampFactory.forKind(JavaKind.Long)); this.object = obj; } @NodeIntrinsic public static native long get(Object array); @Override public void generate(NodeLIRBuilderTool gen) { AllocatableValue obj = gen.getLIRGeneratorTool().newVariable(LIRKind.unknownReference(gen.getLIRGeneratorTool().target().arch.getWordKind())); gen.getLIRGeneratorTool().emitMove(obj, gen.operand(object)); gen.setResult(this, obj); } @Override public boolean verify() { assert graph().getGuardsStage().areFrameStatesAtDeopts() || graph().method().getAnnotation(Snippet.class) != null : "GetObjectAddressNode can't be used directly until frame states are fixed"; return super.verify(); } }