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diff --git a/src/proguard/preverify/SubroutineInliner.java b/src/proguard/preverify/SubroutineInliner.java
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+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.preverify;
+
+import proguard.Configuration;
+import proguard.classfile.*;
+import proguard.classfile.attribute.visitor.AllAttributeVisitor;
+import proguard.classfile.visitor.*;
+
+/**
+ * This class can inline subroutines in methods. This is generally useful (i.e.
+ * required) for preverifying code.
+ *
+ * @author Eric Lafortune
+ */
+public class SubroutineInliner
+{
+    private final Configuration configuration;
+
+
+    /**
+     * Creates a new SubroutineInliner.
+     */
+    public SubroutineInliner(Configuration configuration)
+    {
+        this.configuration = configuration;
+    }
+
+
+    /**
+     * Performs subroutine inlining of the given program class pool.
+     */
+    public void execute(ClassPool programClassPool)
+    {
+        // Clean up any old visitor info.
+        programClassPool.classesAccept(new ClassCleaner());
+
+        // Inline all subroutines.
+        ClassVisitor inliner =
+            new AllMethodVisitor(
+            new AllAttributeVisitor(
+            new CodeSubroutineInliner()));
+
+        // In Java Standard Edition, only class files from Java 6 or higher
+        // should be preverified.
+        if (!configuration.microEdition)
+        {
+            inliner =
+                new ClassVersionFilter(ClassConstants.INTERNAL_CLASS_VERSION_1_6,
+                                       Integer.MAX_VALUE,
+                                       inliner);
+        }
+
+        programClassPool.classesAccept(inliner);
+    }
+}