--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/phases/aot/AOTInliningPolicy.java 2016-12-07 13:50:36.716401103 -0800 @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2016, 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 + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package org.graalvm.compiler.hotspot.phases.aot; + +import static org.graalvm.compiler.core.common.GraalOptions.InlineEverything; +import static org.graalvm.compiler.core.common.GraalOptions.TrivialInliningSize; + +import java.util.Map; + +import org.graalvm.compiler.hotspot.FingerprintUtil; +import org.graalvm.compiler.nodes.Invoke; +import org.graalvm.compiler.nodes.spi.Replacements; +import org.graalvm.compiler.options.Option; +import org.graalvm.compiler.options.OptionType; +import org.graalvm.compiler.options.OptionValue; +import org.graalvm.compiler.phases.common.inlining.InliningUtil; +import org.graalvm.compiler.phases.common.inlining.info.InlineInfo; +import org.graalvm.compiler.phases.common.inlining.policy.GreedyInliningPolicy; +import org.graalvm.compiler.phases.common.inlining.walker.MethodInvocation; + +import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; + +public class AOTInliningPolicy extends GreedyInliningPolicy { + public static class Options { + // @formatter:off + @Option(help = "", type = OptionType.Expert) + public static final OptionValue AOTInliningDepthToSizeRate = new OptionValue<>(2.5); + @Option(help = "", type = OptionType.Expert) + public static final OptionValue AOTInliningSizeMaximum = new OptionValue<>(300); + @Option(help = "", type = OptionType.Expert) + public static final OptionValue AOTInliningSizeMinimum = new OptionValue<>(50); + // @formatter:on + } + + public AOTInliningPolicy(Map hints) { + super(hints); + } + + protected double maxInliningSize(int inliningDepth) { + return Math.max(Options.AOTInliningSizeMaximum.getValue() / (inliningDepth * Options.AOTInliningDepthToSizeRate.getValue()), Options.AOTInliningSizeMinimum.getValue()); + } + + @Override + public boolean isWorthInlining(Replacements replacements, MethodInvocation invocation, int inliningDepth, boolean fullyProcessed) { + final InlineInfo info = invocation.callee(); + + for (int i = 0; i < info.numberOfMethods(); ++i) { + HotSpotResolvedObjectType t = (HotSpotResolvedObjectType) info.methodAt(i).getDeclaringClass(); + if (FingerprintUtil.getFingerprint(t) == 0) { + return false; + } + } + + final double probability = invocation.probability(); + final double relevance = invocation.relevance(); + + if (InlineEverything.getValue()) { + InliningUtil.logInlinedMethod(info, inliningDepth, fullyProcessed, "inline everything"); + return true; + } + + if (isIntrinsic(replacements, info)) { + InliningUtil.logInlinedMethod(info, inliningDepth, fullyProcessed, "intrinsic"); + return true; + } + + if (info.shouldInline()) { + InliningUtil.logInlinedMethod(info, inliningDepth, fullyProcessed, "forced inlining"); + return true; + } + + double inliningBonus = getInliningBonus(info); + int nodes = info.determineNodeCount(); + + if (nodes < TrivialInliningSize.getValue() * inliningBonus) { + InliningUtil.logInlinedMethod(info, inliningDepth, fullyProcessed, "trivial (relevance=%f, probability=%f, bonus=%f, nodes=%d)", relevance, probability, inliningBonus, nodes); + return true; + } + + double maximumNodes = computeMaximumSize(relevance, (int) (maxInliningSize(inliningDepth) * inliningBonus)); + if (nodes <= maximumNodes) { + InliningUtil.logInlinedMethod(info, inliningDepth, fullyProcessed, "relevance-based (relevance=%f, probability=%f, bonus=%f, nodes=%d <= %f)", relevance, probability, inliningBonus, + nodes, maximumNodes); + return true; + } + + InliningUtil.logNotInlinedMethod(info, inliningDepth, "relevance-based (relevance=%f, probability=%f, bonus=%f, nodes=%d > %f)", relevance, probability, inliningBonus, nodes, maximumNodes); + return false; + } +}