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.OptionType; 37 import org.graalvm.compiler.options.OptionValue; 38 39 import jdk.vm.ci.meta.ResolvedJavaMethod; 40 41 public abstract class HotSpotProfilingPlugin implements ProfilingPlugin { 42 public static class Options { 43 @Option(help = "Emit profiling of invokes", type = OptionType.Expert)// 44 public static final OptionValue<Boolean> ProfileInvokes = new OptionValue<>(true); 45 @Option(help = "Emit profiling of backedges", type = OptionType.Expert)// 46 public static final OptionValue<Boolean> ProfileBackedges = new OptionValue<>(true); 47 } 48 49 public abstract int invokeNotifyFreqLog(); 50 51 public abstract int invokeInlineeNotifyFreqLog(); 52 53 public abstract int invokeProfilePobabilityLog(); 54 55 public abstract int backedgeNotifyFreqLog(); 56 57 public abstract int backedgeProfilePobabilityLog(); 58 59 @Override 60 public boolean shouldProfile(GraphBuilderContext builder, ResolvedJavaMethod method) { 61 return !builder.parsingIntrinsic(); 62 } 63 64 @Override 65 public void profileInvoke(GraphBuilderContext builder, ResolvedJavaMethod method, FrameState frameState) { 66 assert shouldProfile(builder, method); 67 if (Options.ProfileInvokes.getValue() && !method.isClassInitializer()) { 68 ProfileNode p = builder.append(new ProfileInvokeNode(method, invokeNotifyFreqLog(), invokeProfilePobabilityLog())); 69 p.setStateBefore(frameState); 70 } 71 } 72 73 @Override 74 public void profileGoto(GraphBuilderContext builder, ResolvedJavaMethod method, int bci, int targetBci, FrameState frameState) { 75 assert shouldProfile(builder, method); 76 if (Options.ProfileBackedges.getValue() && targetBci <= bci) { 77 ProfileNode p = builder.append(new ProfileBranchNode(method, backedgeNotifyFreqLog(), backedgeProfilePobabilityLog(), bci, targetBci)); 78 p.setStateBefore(frameState); 79 } 80 } 81 82 @Override 83 public void profileIf(GraphBuilderContext builder, ResolvedJavaMethod method, int bci, LogicNode condition, int trueBranchBci, int falseBranchBci, FrameState frameState) { 84 assert shouldProfile(builder, method); 85 if (Options.ProfileBackedges.getValue() && (falseBranchBci <= bci || trueBranchBci <= bci)) { 86 boolean negate = false; 87 int targetBci = trueBranchBci; 88 if (falseBranchBci <= bci) { 89 assert trueBranchBci > bci; 90 negate = true; 91 targetBci = falseBranchBci; 92 } else { 93 assert trueBranchBci <= bci && falseBranchBci > bci; 94 } 95 ValueNode trueValue = builder.append(ConstantNode.forBoolean(!negate)); 96 ValueNode falseValue = builder.append(ConstantNode.forBoolean(negate)); 97 ConditionalNode branchCondition = builder.append(new ConditionalNode(condition, trueValue, falseValue)); 98 ProfileNode p = builder.append(new ProfileBranchNode(method, backedgeNotifyFreqLog(), backedgeProfilePobabilityLog(), branchCondition, bci, targetBci)); 99 p.setStateBefore(frameState); 100 } 101 } 102 }