/*
 * Copyright (c) 2013, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package org.graalvm.compiler.replacements;

import static org.graalvm.compiler.core.common.GraalOptions.TrivialInliningSize;
import static org.graalvm.compiler.java.BytecodeParserOptions.InlineDuringParsingMaxDepth;
import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.createStandardInlineInfo;

import org.graalvm.compiler.java.BytecodeParserOptions;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext;
import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin;

import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.services.Services;

public final class InlineDuringParsingPlugin implements InlineInvokePlugin {

    private static int getInteger(String name, int def) {
        String value = Services.getSavedProperties().get(name);
        if (value != null) {
            return Integer.parseInt(value);
        }
        return def;
    }

    
Budget which when exceeded reduces the effective value of BytecodeParserOptions.InlineDuringParsingMaxDepth to MaxDepthAfterBudgetExceeded.
/** * Budget which when exceeded reduces the effective value of * {@link BytecodeParserOptions#InlineDuringParsingMaxDepth} to * {@link #MaxDepthAfterBudgetExceeded}. */
private static final int NodeBudget = getInteger("InlineDuringParsingPlugin.NodeBudget", 2000); private static final int MaxDepthAfterBudgetExceeded = getInteger("InlineDuringParsingPlugin.MaxDepthAfterBudgetExceeded", 3); @Override public InlineInfo shouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { // @formatter:off if (method.hasBytecodes() && method.getDeclaringClass().isLinked() && method.canBeInlined()) { // Test force inlining first if (method.shouldBeInlined() && checkInliningDepth(b)) { return createStandardInlineInfo(method); } if (!method.isSynchronized() && checkSize(method, args, b.getGraph()) && checkInliningDepth(b)) { return createStandardInlineInfo(method); } } // @formatter:on return null; } private static boolean checkInliningDepth(GraphBuilderContext b) { int nodeCount = b.getGraph().getNodeCount(); int maxDepth = InlineDuringParsingMaxDepth.getValue(b.getOptions()); if (nodeCount > NodeBudget && MaxDepthAfterBudgetExceeded < maxDepth) { maxDepth = MaxDepthAfterBudgetExceeded; } return b.getDepth() < maxDepth; } private static boolean checkSize(ResolvedJavaMethod method, ValueNode[] args, StructuredGraph graph) { int bonus = 1; for (ValueNode v : args) { if (v.isConstant()) { bonus++; } } return method.getCode().length <= TrivialInliningSize.getValue(graph.getOptions()) * bonus; } }