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 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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.phases.common;

import org.graalvm.compiler.debug.DebugContext;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.spi.CoreProviders;
import org.graalvm.compiler.options.Option;
import org.graalvm.compiler.options.OptionKey;
import org.graalvm.compiler.options.OptionType;
import org.graalvm.compiler.phases.BasePhase;

public class NodeCounterPhase extends BasePhase<CoreProviders> {

    private Stage stage;

    public NodeCounterPhase(Stage stage) {
        this.stage = stage;
    }

    public enum Stage {
        INIT,
        EARLY,
        LATE
    }

    public static class Options {
        // @formatter:off
        @Option(help = "Counts the number of instances of each node class.", type = OptionType.Debug)
        public static final OptionKey<Boolean> NodeCounters = new OptionKey<>(false);
        // @formatter:on
    }

    @Override
    protected void run(StructuredGraph graph, CoreProviders context) {

        for (Node node : graph.getNodes()) {
            String nodeName = node.getNodeClass().getClazz().getSimpleName();

            DebugContext.counter("NodeCounter_%s_%s", this.stage, nodeName).increment(node.getDebug());
        }
    }
}