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

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_20;

import org.graalvm.compiler.common.PermanentBailoutException;
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.hotspot.HotSpotLIRGenerator;
import org.graalvm.compiler.hotspot.meta.HotSpotConstantLoadAction;
import org.graalvm.compiler.hotspot.nodes.DeoptimizingStubCall;
import org.graalvm.compiler.hotspot.word.KlassPointer;
import org.graalvm.compiler.lir.LIRFrameState;
import org.graalvm.compiler.nodeinfo.NodeInfo;
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.util.GraphUtil;

import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant;
import jdk.vm.ci.hotspot.HotSpotObjectConstant;
import jdk.vm.ci.meta.Constant;
import jdk.vm.ci.meta.Value;

A call to the VM via a regular stub.
/** * A call to the VM via a regular stub. */
@NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_20) public class ResolveConstantStubCall extends DeoptimizingStubCall implements Canonicalizable, LIRLowerable { public static final NodeClass<ResolveConstantStubCall> TYPE = NodeClass.create(ResolveConstantStubCall.class); @OptionalInput protected ValueNode value; @Input protected ValueNode string; protected Constant constant; protected HotSpotConstantLoadAction action; public ResolveConstantStubCall(ValueNode value, ValueNode string) { super(TYPE, value.stamp()); this.value = value; this.string = string; this.action = HotSpotConstantLoadAction.RESOLVE; } public ResolveConstantStubCall(ValueNode value, ValueNode string, HotSpotConstantLoadAction action) { super(TYPE, value.stamp()); this.value = value; this.string = string; this.action = action; } @NodeIntrinsic public static native Object resolveObject(Object value, Object symbol); @NodeIntrinsic public static native KlassPointer resolveKlass(KlassPointer value, Object symbol); @NodeIntrinsic public static native KlassPointer resolveKlass(KlassPointer value, Object symbol, @ConstantNodeParameter HotSpotConstantLoadAction action); @Override public Node canonical(CanonicalizerTool tool) { if (value != null) { constant = GraphUtil.foldIfConstantAndRemove(this, value); } return this; } @Override public void generate(NodeLIRBuilderTool gen) { assert constant != null : "Expected the value to fold: " + value; Value stringValue = gen.operand(string); Value result; LIRFrameState fs = gen.state(this); assert fs != null : "The stateAfter is null"; if (constant instanceof HotSpotObjectConstant) { result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitObjectConstantRetrieval(constant, stringValue, fs); } else if (constant instanceof HotSpotMetaspaceConstant) { if (action == HotSpotConstantLoadAction.RESOLVE) { result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitMetaspaceConstantRetrieval(constant, stringValue, fs); } else { assert action == HotSpotConstantLoadAction.INITIALIZE; result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitKlassInitializationAndRetrieval(constant, stringValue, fs); } } else { throw new PermanentBailoutException("Unsupported constant type: " + constant); } gen.setResult(this, result); } }