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package org.graalvm.compiler.hotspot.nodes;

import jdk.vm.ci.meta.JavaKind;

import org.graalvm.compiler.core.common.LocationIdentity;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;
import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp;
import org.graalvm.compiler.nodeinfo.InputType;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

Saves all allocatable registers.
/** * Saves all allocatable registers. */
@NodeInfo(allowedUsageTypes = {InputType.Memory}) public final class SaveAllRegistersNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Single { public static final NodeClass<SaveAllRegistersNode> TYPE = NodeClass.create(SaveAllRegistersNode.class); protected SaveRegistersOp saveRegistersOp; public SaveAllRegistersNode() { super(TYPE, StampFactory.forKind(JavaKind.Long)); } @Override public void generate(NodeLIRBuilderTool gen) { saveRegistersOp = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitSaveAllRegisters(); }
Returns:the map from registers to the stack locations in they are saved
/** * @return the map from registers to the stack locations in they are saved */
public SaveRegistersOp getSaveRegistersOp() { assert saveRegistersOp != null : "saved registers op has not yet been created"; return saveRegistersOp; }
Returns:a token that couples this node to an UncommonTrapCallNode so that the latter has access to the register save map
/** * @return a token that couples this node to an {@link UncommonTrapCallNode} so that the latter * has access to the {@linkplain SaveRegistersOp#getMap register save map} */
@NodeIntrinsic public static native long saveAllRegisters(); @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.any(); } }