1 /* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.meta; 24 25 import org.graalvm.compiler.hotspot.nodes.profiling.ProfileBranchNode; 26 import org.graalvm.compiler.hotspot.nodes.profiling.ProfileInvokeNode; 27 import org.graalvm.compiler.hotspot.nodes.profiling.ProfileNode; 28 import org.graalvm.compiler.nodes.ConstantNode; 29 import org.graalvm.compiler.nodes.FrameState; 30 import org.graalvm.compiler.nodes.LogicNode; 31 import org.graalvm.compiler.nodes.ValueNode; 32 import org.graalvm.compiler.nodes.calc.ConditionalNode; 33 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; 34 import org.graalvm.compiler.nodes.graphbuilderconf.ProfilingPlugin; 35 import org.graalvm.compiler.options.Option; 36 import org.graalvm.compiler.options.OptionKey; 37 import org.graalvm.compiler.options.OptionType; 38 import org.graalvm.compiler.options.OptionValues; 39 40 import jdk.vm.ci.meta.ResolvedJavaMethod; 41 42 public abstract class HotSpotProfilingPlugin implements ProfilingPlugin { 43 public static class Options { 44 @Option(help = "Emit profiling of invokes", type = OptionType.Expert)// 45 public static final OptionKey<Boolean> ProfileInvokes = new OptionKey<>(true); 46 @Option(help = "Emit profiling of backedges", type = OptionType.Expert)// 47 public static final OptionKey<Boolean> ProfileBackedges = new OptionKey<>(true); 48 } 49 50 public abstract int invokeNotifyFreqLog(OptionValues options); 51 52 public abstract int invokeInlineeNotifyFreqLog(OptionValues options); 53 54 public abstract int invokeProfilePobabilityLog(OptionValues options); 55 56 public abstract int backedgeNotifyFreqLog(OptionValues options); 57 58 public abstract int backedgeProfilePobabilityLog(OptionValues options); 59 60 @Override 61 public boolean shouldProfile(GraphBuilderContext builder, ResolvedJavaMethod method) { 62 return !builder.parsingIntrinsic(); 63 } 64 65 @Override 66 public void profileInvoke(GraphBuilderContext builder, ResolvedJavaMethod method, FrameState frameState) { 67 assert shouldProfile(builder, method); 68 OptionValues options = builder.getOptions(); 69 if (Options.ProfileInvokes.getValue(options) && !method.isClassInitializer()) { 70 ProfileNode p = builder.append(new ProfileInvokeNode(method, invokeNotifyFreqLog(options), invokeProfilePobabilityLog(options))); 71 p.setStateBefore(frameState); 72 } 73 } 74 75 @Override 76 public void profileGoto(GraphBuilderContext builder, ResolvedJavaMethod method, int bci, int targetBci, FrameState frameState) { 77 assert shouldProfile(builder, method); 78 OptionValues options = builder.getOptions(); 79 if (Options.ProfileBackedges.getValue(options) && targetBci <= bci) { 80 ProfileNode p = builder.append(new ProfileBranchNode(method, backedgeNotifyFreqLog(options), backedgeProfilePobabilityLog(options), bci, targetBci)); 81 p.setStateBefore(frameState); 82 } 83 } 84 85 @Override 86 public void profileIf(GraphBuilderContext builder, ResolvedJavaMethod method, int bci, LogicNode condition, int trueBranchBci, int falseBranchBci, FrameState frameState) { 87 assert shouldProfile(builder, method); 88 OptionValues options = builder.getOptions(); 89 if (Options.ProfileBackedges.getValue(options) && (falseBranchBci <= bci || trueBranchBci <= bci)) { 90 boolean negate = false; 91 int targetBci = trueBranchBci; 92 if (falseBranchBci <= bci) { 93 assert trueBranchBci > bci; 94 negate = true; 95 targetBci = falseBranchBci; 96 } else { 97 assert trueBranchBci <= bci && falseBranchBci > bci; 98 } 99 ValueNode trueValue = builder.append(ConstantNode.forBoolean(!negate)); 100 ValueNode falseValue = builder.append(ConstantNode.forBoolean(negate)); 101 ConditionalNode branchCondition = builder.append(new ConditionalNode(condition, trueValue, falseValue)); 102 ProfileNode p = builder.append(new ProfileBranchNode(method, backedgeNotifyFreqLog(options), backedgeProfilePobabilityLog(options), branchCondition, bci, targetBci)); 103 p.setStateBefore(frameState); 104 } 105 } 106 }