1 /*
   2  * Copyright (c) 2013, 2015, 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.replacements;
  24 
  25 import static org.graalvm.compiler.core.common.GraalOptions.TrivialInliningSize;
  26 import static org.graalvm.compiler.java.BytecodeParserOptions.InlineDuringParsingMaxDepth;
  27 import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.createStandardInlineInfo;
  28 
  29 import org.graalvm.compiler.nodes.ValueNode;
  30 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext;
  31 import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin;
  32 
  33 import jdk.vm.ci.meta.ResolvedJavaMethod;
  34 
  35 public final class InlineDuringParsingPlugin implements InlineInvokePlugin {
  36 
  37     @Override
  38     public InlineInfo shouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) {
  39         // @formatter:off
  40         if (method.hasBytecodes() &&
  41             method.getDeclaringClass().isLinked() &&
  42             method.canBeInlined()) {
  43 
  44             // Test force inlining first
  45             if (method.shouldBeInlined()) {
  46                 return createStandardInlineInfo(method);
  47             }
  48 
  49             if (!method.isSynchronized() &&
  50                 checkSize(method, args) &&
  51                 b.getDepth() < InlineDuringParsingMaxDepth.getValue()) {
  52                 return createStandardInlineInfo(method);
  53             }
  54         }
  55         // @formatter:on
  56         return null;
  57     }
  58 
  59     private static boolean checkSize(ResolvedJavaMethod method, ValueNode[] args) {
  60         int bonus = 1;
  61         for (ValueNode v : args) {
  62             if (v.isConstant()) {
  63                 bonus++;
  64             }
  65         }
  66         return method.getCode().length <= TrivialInliningSize.getValue() * bonus;
  67     }
  68 }