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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 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.replacements.nodes;

import org.graalvm.compiler.core.common.type.StampPair;
import org.graalvm.compiler.debug.GraalError;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.InputType;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
import org.graalvm.compiler.nodes.FrameState;
import org.graalvm.compiler.nodes.Invoke;
import org.graalvm.compiler.nodes.InvokeNode;
import org.graalvm.compiler.nodes.StateSplit;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import jdk.internal.vm.compiler.word.LocationIdentity;

import jdk.vm.ci.code.BytecodeFrame;
import jdk.vm.ci.meta.ResolvedJavaMethod;

This is an extension of MacroNode that is a StateSplit and a MemoryCheckpoint.
/** * This is an extension of {@link MacroNode} that is a {@link StateSplit} and a * {@link MemoryCheckpoint}. */
@NodeInfo public abstract class MacroStateSplitNode extends MacroNode implements StateSplit, MemoryCheckpoint.Single { public static final NodeClass<MacroStateSplitNode> TYPE = NodeClass.create(MacroStateSplitNode.class); @OptionalInput(InputType.State) protected FrameState stateAfter; protected MacroStateSplitNode(NodeClass<? extends MacroNode> c, InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, StampPair returnStamp, ValueNode... arguments) { super(c, invokeKind, targetMethod, bci, returnStamp, arguments); } @Override public FrameState stateAfter() { return stateAfter; } @Override public void setStateAfter(FrameState x) { assert x == null || x.isAlive() : "frame state must be in a graph"; updateUsages(stateAfter, x); stateAfter = x; } @Override public boolean hasSideEffect() { return true; } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.any(); } protected void replaceSnippetInvokes(StructuredGraph snippetGraph) { for (MethodCallTargetNode call : snippetGraph.getNodes(MethodCallTargetNode.TYPE)) { Invoke invoke = call.invoke(); if (!call.targetMethod().equals(getTargetMethod())) { throw new GraalError("unexpected invoke %s in snippet", getClass().getSimpleName()); } assert invoke.stateAfter().bci == BytecodeFrame.AFTER_BCI; // Here we need to fix the bci of the invoke InvokeNode newInvoke = snippetGraph.add(new InvokeNode(invoke.callTarget(), bci(), invoke.getLocationIdentity())); newInvoke.setStateAfter(invoke.stateAfter()); snippetGraph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke); } } }