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package org.graalvm.compiler.phases.common;

import org.graalvm.compiler.graph.Graph.NodeEventScope;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.phases.BasePhase;
import org.graalvm.compiler.phases.PhaseSuite;
import org.graalvm.compiler.phases.common.util.EconomicSetNodeEventListener;
import org.graalvm.compiler.phases.tiers.PhaseContext;

A phase suite that applies canonicalization to a graph after all phases in the suite have been applied if any of the phases changed the graph.
/** * A phase suite that applies {@linkplain CanonicalizerPhase canonicalization} to a graph after all * phases in the suite have been applied if any of the phases changed the graph. */
public class IncrementalCanonicalizerPhase<C extends PhaseContext> extends PhaseSuite<C> { private final CanonicalizerPhase canonicalizer; public IncrementalCanonicalizerPhase(CanonicalizerPhase canonicalizer) { this.canonicalizer = canonicalizer; } public IncrementalCanonicalizerPhase(CanonicalizerPhase canonicalizer, BasePhase<? super C> phase) { this.canonicalizer = canonicalizer; appendPhase(phase); } @Override @SuppressWarnings("try") protected void run(StructuredGraph graph, C context) { EconomicSetNodeEventListener listener = new EconomicSetNodeEventListener(); try (NodeEventScope nes = graph.trackNodeEvents(listener)) { super.run(graph, context); } if (!listener.getNodes().isEmpty()) { canonicalizer.applyIncremental(graph, context, listener.getNodes(), null, false); } } }