1 /* 2 * Copyright (c) 2013, 2018, 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 24 25 package org.graalvm.compiler.replacements; 26 27 import static org.graalvm.compiler.core.common.GraalOptions.TrivialInliningSize; 28 import static org.graalvm.compiler.java.BytecodeParserOptions.InlineDuringParsingMaxDepth; 29 import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.createStandardInlineInfo; 30 31 import org.graalvm.compiler.java.BytecodeParserOptions; 32 import org.graalvm.compiler.nodes.StructuredGraph; 33 import org.graalvm.compiler.nodes.ValueNode; 34 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; 35 import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin; 36 37 import jdk.vm.ci.meta.ResolvedJavaMethod; 38 import jdk.vm.ci.services.Services; 39 40 public final class InlineDuringParsingPlugin implements InlineInvokePlugin { 41 42 private static int getInteger(String name, int def) { 43 String value = Services.getSavedProperties().get(name); 44 if (value != null) { 45 return Integer.parseInt(value); 46 } 47 return def; 48 } 49 50 /** 51 * Budget which when exceeded reduces the effective value of 52 * {@link BytecodeParserOptions#InlineDuringParsingMaxDepth} to 53 * {@link #MaxDepthAfterBudgetExceeded}. 54 */ 55 private static final int NodeBudget = getInteger("InlineDuringParsingPlugin.NodeBudget", 2000); 56 57 private static final int MaxDepthAfterBudgetExceeded = getInteger("InlineDuringParsingPlugin.MaxDepthAfterBudgetExceeded", 3); 58 59 @Override 60 public InlineInfo shouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { 61 // @formatter:off 62 if (method.hasBytecodes() && 63 method.getDeclaringClass().isLinked() && 64 method.canBeInlined()) { 65 66 // Test force inlining first 67 if (method.shouldBeInlined() && checkInliningDepth(b)) { 68 return createStandardInlineInfo(method); 69 } 70 71 if (!method.isSynchronized() && 72 checkSize(method, args, b.getGraph()) && 73 checkInliningDepth(b)) { 74 return createStandardInlineInfo(method); 75 } 76 } 77 // @formatter:on 78 return null; 79 } 80 81 private static boolean checkInliningDepth(GraphBuilderContext b) { 82 int nodeCount = b.getGraph().getNodeCount(); 83 int maxDepth = InlineDuringParsingMaxDepth.getValue(b.getOptions()); 84 if (nodeCount > NodeBudget && MaxDepthAfterBudgetExceeded < maxDepth) { 85 maxDepth = MaxDepthAfterBudgetExceeded; 86 } 87 return b.getDepth() < maxDepth; 88 } 89 90 private static boolean checkSize(ResolvedJavaMethod method, ValueNode[] args, StructuredGraph graph) { 91 int bonus = 1; 92 for (ValueNode v : args) { 93 if (v.isConstant()) { 94 bonus++; 95 } 96 } 97 return method.getCode().length <= TrivialInliningSize.getValue(graph.getOptions()) * bonus; 98 } 99 }