Mercurial > hg > graal-compiler

changeset 20904:44d8f20d4f55

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Merge.
author Doug Simon <doug.simon@oracle.com>
date Mon, 13 Apr 2015 21:51:19 +0200
parents dc58f4ca21c9 (diff) c893d4112f30 (current diff)
children f0d8a33aebd1
files graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ASTInstrumentListener.java graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/InstrumentListener.java graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultASTInstrumentListener.java graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/DefaultInstrumentListener.java graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/SimpleASTInstrumentListener.java graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/SimpleInstrumentListener.java
diffstat 24 files changed, 592 insertions(+), 397 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.compiler.test/src/com/oracle/graal/compiler/test/GraalCompilerTest.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.compiler.test/src/com/oracle/graal/compiler/test/GraalCompilerTest.java	Mon Apr 13 21:51:19 2015 +0200
@@ -50,7 +50,7 @@
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.java.*;
 import com.oracle.graal.lir.asm.*;
 import com.oracle.graal.lir.phases.*;
--- a/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/ForeignCallPlugin.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/ForeignCallPlugin.java	Mon Apr 13 21:51:19 2015 +0200
@@ -24,7 +24,7 @@
 
 import com.oracle.graal.api.code.*;
 import com.oracle.graal.api.meta.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.extended.*;
 
--- a/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/InvocationPlugin.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/InvocationPlugin.java	Mon Apr 13 21:51:19 2015 +0200
@@ -27,7 +27,7 @@
 
 import com.oracle.graal.api.meta.*;
 import com.oracle.graal.compiler.common.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 
 /**
--- a/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/InvocationPluginIdHolder.java	Mon Apr 13 16:27:50 2015 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package com.oracle.graal.graphbuilderconf;
-
-import com.oracle.graal.api.meta.*;
-
-/**
- * {@link ResolvedJavaMethod}s that can assign themselves an identifier for use in a side table
- * mapping methods to {@link InvocationPlugin}s.
- */
-public interface InvocationPluginIdHolder extends ResolvedJavaMethod {
-    /**
-     * Sets the unique, positive, non-zero identifier for this method.
-     */
-    void setInvocationPluginId(int id);
-
-    /**
-     * Gets the identifier set by {@link #setInvocationPluginId(int)} or 0 if no
-     * {@link InvocationPlugin} identifier was assigned to this method.
-     */
-    int getInvocationPluginId();
-}
--- a/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/InvocationPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/InvocationPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -26,43 +26,19 @@
 
 import java.lang.reflect.*;
 import java.util.*;
-import java.util.stream.*;
 
 import com.oracle.graal.api.meta.*;
-import com.oracle.graal.compiler.common.*;
-import com.oracle.graal.graph.Node;
+import com.oracle.graal.graph.*;
 import com.oracle.graal.graph.iterators.*;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.MethodKey;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
-import com.oracle.graal.nodes.type.*;
 
 /**
  * Manages a set of {@link InvocationPlugin}s.
  */
 public class InvocationPlugins {
 
-    /**
-     * Access to the receiver in an {@link InvocationPlugin} for a non-static method. The class
-     * literal for this interface must be used with
-     * {@link InvocationPlugins#register(InvocationPlugin, Class, String, Class...)} to denote the
-     * receiver argument for such a non-static method.
-     */
-    public interface Receiver {
-        /**
-         * Gets the receiver value, null checking it first if necessary.
-         *
-         * @return the receiver value with a {@linkplain StampTool#isPointerNonNull(ValueNode)
-         *         non-null} stamp
-         */
-        ValueNode get();
-
-        /**
-         * Determines if the receiver is constant.
-         */
-        default boolean isConstant() {
-            return false;
-        }
-    }
-
     public static class InvocationPluginReceiver implements Receiver {
         private final GraphBuilderContext parser;
         private ValueNode[] args;
@@ -195,101 +171,16 @@
         }
     }
 
-    static final class MethodInfo {
-        final boolean isStatic;
-        final Class<?> declaringClass;
-        final String name;
-        final Class<?>[] argumentTypes;
-        final InvocationPlugin plugin;
-
-        int id;
-
-        MethodInfo(InvocationPlugin plugin, Class<?> declaringClass, String name, Class<?>... argumentTypes) {
-            this.plugin = plugin;
-            this.isStatic = argumentTypes.length == 0 || argumentTypes[0] != Receiver.class;
-            this.declaringClass = declaringClass;
-            this.name = name;
-            this.argumentTypes = argumentTypes;
-            if (!isStatic) {
-                argumentTypes[0] = declaringClass;
-            }
-            assert resolveJava() != null;
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (obj instanceof MethodInfo) {
-                MethodInfo that = (MethodInfo) obj;
-                boolean res = this.name.equals(that.name) && this.declaringClass.equals(that.declaringClass) && Arrays.equals(this.argumentTypes, that.argumentTypes);
-                assert !res || this.isStatic == that.isStatic;
-                return res;
-            }
-            return false;
-        }
-
-        @Override
-        public int hashCode() {
-            // Replay compilation mandates use of stable hash codes
-            return declaringClass.getName().hashCode() ^ name.hashCode();
-        }
-
-        ResolvedJavaMethod resolve(MetaAccessProvider metaAccess) {
-            return metaAccess.lookupJavaMethod(resolveJava());
-        }
-
-        Executable resolveJava() {
-            try {
-                Executable res;
-                Class<?>[] parameterTypes = isStatic ? argumentTypes : Arrays.copyOfRange(argumentTypes, 1, argumentTypes.length);
-                if (name.equals("<init>")) {
-                    res = declaringClass.getDeclaredConstructor(parameterTypes);
-                } else {
-                    res = declaringClass.getDeclaredMethod(name, parameterTypes);
-                }
-                assert Modifier.isStatic(res.getModifiers()) == isStatic;
-                return res;
-            } catch (NoSuchMethodException | SecurityException e) {
-                throw new GraalInternalError(e);
-            }
-        }
-
-        @Override
-        public String toString() {
-            StringBuilder sb = new StringBuilder(declaringClass.getName()).append('.').append(name).append('(');
-            for (Class<?> p : argumentTypes) {
-                if (sb.charAt(sb.length() - 1) != '(') {
-                    sb.append(", ");
-                }
-                sb.append(p.getSimpleName());
-            }
-            return sb.append(')').toString();
-        }
-    }
-
-    protected final MetaAccessProvider metaAccess;
-    private final List<MethodInfo> registrations;
-
-    /**
-     * The minimum {@linkplain InvocationPluginIdHolder#getInvocationPluginId() id} for a method
-     * associated with a plugin in {@link #plugins}.
-     */
-    private int minId = Integer.MAX_VALUE;
-
-    /**
-     * Resolved methods to plugins map. The keys (i.e., indexes) are derived from
-     * {@link InvocationPluginIdHolder#getInvocationPluginId()}.
-     */
-    private volatile InvocationPlugin[] plugins;
+    protected final MethodIdMap<InvocationPlugin> plugins;
 
     /**
      * The plugins {@linkplain #lookupInvocation(ResolvedJavaMethod) searched} before searching in
      * this object.
      */
-    private InvocationPlugins parent;
+    protected final InvocationPlugins parent;
 
     private InvocationPlugins(InvocationPlugins parent, MetaAccessProvider metaAccess) {
-        this.metaAccess = metaAccess;
-        this.registrations = new ArrayList<>(INITIAL_PLUGIN_CAPACITY);
+        this.plugins = new MethodIdMap<>(metaAccess);
         InvocationPlugins p = parent;
         // Only adopt a non-empty parent
         while (p != null && p.size() == 0) {
@@ -298,13 +189,11 @@
         this.parent = p;
     }
 
-    private static final int INITIAL_PLUGIN_CAPACITY = 64;
-
     /**
      * Creates a set of invocation plugins with a non-null {@linkplain #getParent() parent}.
      */
     public InvocationPlugins(InvocationPlugins parent) {
-        this(parent, parent.metaAccess);
+        this(parent, parent.plugins.getMetaAccess());
     }
 
     public InvocationPlugins(MetaAccessProvider metaAccess) {
@@ -316,14 +205,10 @@
      * registered for {@code method}.
      */
     public void register(InvocationPlugin plugin, Class<?> declaringClass, String name, Class<?>... argumentTypes) {
-        MethodInfo methodInfo = new MethodInfo(plugin, declaringClass, name, argumentTypes);
+        MethodKey<InvocationPlugin> methodInfo = plugins.put(plugin, declaringClass, name, argumentTypes);
         assert Checker.check(this, methodInfo, plugin);
-        assert plugins == null : "invocation plugin registration is closed";
-        registrations.add(methodInfo);
     }
 
-    private static int nextInvocationPluginId = 1;
-
     /**
      * Gets the plugin for a given method.
      *
@@ -331,54 +216,14 @@
      * @return the plugin associated with {@code method} or {@code null} if none exists
      */
     public InvocationPlugin lookupInvocation(ResolvedJavaMethod method) {
-        assert method instanceof InvocationPluginIdHolder;
+        assert method instanceof MethodIdHolder;
         if (parent != null) {
             InvocationPlugin plugin = parent.lookupInvocation(method);
             if (plugin != null) {
                 return plugin;
             }
         }
-        InvocationPluginIdHolder pluggable = (InvocationPluginIdHolder) method;
-        if (plugins == null) {
-            // Must synchronize across all InvocationPlugins objects to ensure thread safe
-            // allocation of InvocationPlugin identifiers
-            synchronized (InvocationPlugins.class) {
-                if (plugins == null) {
-                    if (registrations.isEmpty()) {
-                        plugins = new InvocationPlugin[0];
-                    } else {
-                        int max = Integer.MIN_VALUE;
-                        for (MethodInfo methodInfo : registrations) {
-                            InvocationPluginIdHolder p = (InvocationPluginIdHolder) methodInfo.resolve(metaAccess);
-                            int id = p.getInvocationPluginId();
-                            if (id == 0) {
-                                id = nextInvocationPluginId++;
-                                p.setInvocationPluginId(id);
-                            }
-                            if (id < minId) {
-                                minId = id;
-                            }
-                            if (id > max) {
-                                max = id;
-
-                            }
-                            methodInfo.id = id;
-                        }
-
-                        int length = (max - minId) + 1;
-                        plugins = new InvocationPlugin[length];
-                        for (MethodInfo m : registrations) {
-                            int index = m.id - minId;
-                            plugins[index] = m.plugin;
-                        }
-                    }
-                }
-            }
-        }
-
-        int id = pluggable.getInvocationPluginId();
-        int index = id - minId;
-        return index >= 0 && index < plugins.length ? plugins[index] : null;
+        return plugins.get((MethodIdHolder) method);
     }
 
     /**
@@ -391,7 +236,7 @@
 
     @Override
     public String toString() {
-        return registrations.stream().map(MethodInfo::toString).collect(Collectors.joining(", ")) + " / parent: " + this.parent;
+        return plugins + " / parent: " + this.parent;
     }
 
     private static class Checker {
@@ -420,10 +265,10 @@
             SIGS = sigs.toArray(new Class<?>[sigs.size()][]);
         }
 
-        public static boolean check(InvocationPlugins plugins, MethodInfo method, InvocationPlugin plugin) {
-            InvocationPlugins p = plugins;
+        public static boolean check(InvocationPlugins plugins, MethodKey<InvocationPlugin> method, InvocationPlugin plugin) {
+            InvocationPlugins p = plugins.parent;
             while (p != null) {
-                assert !p.registrations.contains(method) : "a plugin is already registered for " + method;
+                assert !p.plugins.containsKey(method) : "a plugin is already registered for " + method;
                 p = p.parent;
             }
             if (plugin instanceof ForeignCallPlugin) {
@@ -448,12 +293,8 @@
         }
     }
 
-    public MetaAccessProvider getMetaAccess() {
-        return metaAccess;
-    }
-
     public int size() {
-        return registrations.size();
+        return plugins.size();
     }
 
     /**
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/MethodIdHolder.java	Mon Apr 13 21:51:19 2015 +0200
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.graphbuilderconf;
+
+import java.util.*;
+import java.util.function.*;
+
+import com.oracle.graal.api.meta.*;
+
+/**
+ * {@link ResolvedJavaMethod}s that can be assigned a globally unique identifier for use as keys in
+ * a {@link MethodIdMap}. This should only be used where the cost of a {@link Map} with
+ * {@link ResolvedJavaMethod}s as keys is too high.
+ */
+public interface MethodIdHolder extends ResolvedJavaMethod {
+    /**
+     * Sets the unique, positive, non-zero identifier for this method.
+     */
+    void setMethodId(int id);
+
+    /**
+     * Gets the identifier set by {@link #setMethodId(int)} or 0 if no identifier was assigned to
+     * this method.
+     */
+    int getMethodId();
+
+    /**
+     * A singleton class for allocating globally unique method identifiers.
+     */
+    static final class MethodIdAllocator {
+
+        /**
+         * Ensures a given method has a unique identifier.
+         */
+        public int assignId(MethodIdHolder holder) {
+            assert Thread.holdsLock(instance) : "must only be called from within MethodIdHolder.allocateIds";
+            int id = holder.getMethodId();
+            if (id == 0) {
+                id = nextId++;
+                holder.setMethodId(id);
+                if (idVerifierMap != null) {
+                    idVerifierMap.put(holder, id);
+                }
+            } else {
+                assert idVerifierMap.get(holder) == id;
+            }
+            return id;
+        }
+
+        private int nextId = 1;
+        private final Map<MethodIdHolder, Integer> idVerifierMap;
+
+        @SuppressWarnings("all")
+        private MethodIdAllocator() {
+            boolean assertionsEnabled = false;
+            assert assertionsEnabled = true;
+            idVerifierMap = assertionsEnabled ? new HashMap<>() : null;
+        }
+
+        /**
+         * Singleton instance.
+         */
+        private static final MethodIdAllocator instance = new MethodIdAllocator();
+    }
+
+    /**
+     * Executes some given code that ensures some set of {@link ResolvedJavaMethod}s have unique ids
+     * {@linkplain MethodIdHolder#setMethodId(int) assigned} to them. The
+     * {@link Consumer#accept(Object)} method of the given object is called under a global lock.
+     */
+    static void assignIds(Consumer<MethodIdAllocator> methodIdConsumer) {
+        synchronized (MethodIdAllocator.instance) {
+            methodIdConsumer.accept(MethodIdAllocator.instance);
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/MethodIdMap.java	Mon Apr 13 21:51:19 2015 +0200
@@ -0,0 +1,253 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.graphbuilderconf;
+
+import java.lang.reflect.*;
+import java.util.*;
+import java.util.function.*;
+import java.util.stream.*;
+
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.compiler.common.*;
+import com.oracle.graal.graphbuilderconf.MethodIdHolder.MethodIdAllocator;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.type.*;
+
+/**
+ * A map whose keys are {@link MethodIdHolder}s that doesn't require eager resolution of
+ * {@link ResolvedJavaMethod}s and has retrieval as fast as array indexing. The constraints on using
+ * such a map are:
+ * <ul>
+ * <li>at most one value can be added for any key</li>
+ * <li>no more entries can be added after the first {@linkplain #get(MethodIdHolder) retrieval}</li>
+ * </ul>
+ *
+ * @param <V> the type of the values in the map
+ */
+public class MethodIdMap<V> {
+
+    /**
+     * The receiver in a non-static method. The class literal for this interface must be used with
+     * {@link MethodIdMap#put(Object, Class, String, Class...)} to denote the receiver argument for
+     * such a non-static method.
+     */
+    public interface Receiver {
+        /**
+         * Gets the receiver value, null checking it first if necessary.
+         *
+         * @return the receiver value with a {@linkplain StampTool#isPointerNonNull(ValueNode)
+         *         non-null} stamp
+         */
+        ValueNode get();
+
+        /**
+         * Determines if the receiver is constant.
+         */
+        default boolean isConstant() {
+            return false;
+        }
+    }
+
+    /**
+     * Key for a method.
+     */
+    public static class MethodKey<T> {
+        final boolean isStatic;
+        final Class<?> declaringClass;
+        final String name;
+        final Class<?>[] argumentTypes;
+        final T value;
+        int id;
+
+        MethodKey(T data, Class<?> declaringClass, String name, Class<?>... argumentTypes) {
+            this.value = data;
+            this.isStatic = argumentTypes.length == 0 || argumentTypes[0] != Receiver.class;
+            this.declaringClass = declaringClass;
+            this.name = name;
+            this.argumentTypes = argumentTypes;
+            if (!isStatic) {
+                argumentTypes[0] = declaringClass;
+            }
+            assert resolveJava() != null;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj instanceof MethodKey) {
+                MethodKey<?> that = (MethodKey<?>) obj;
+                boolean res = this.name.equals(that.name) && this.declaringClass.equals(that.declaringClass) && Arrays.equals(this.argumentTypes, that.argumentTypes);
+                assert !res || this.isStatic == that.isStatic;
+                return res;
+            }
+            return false;
+        }
+
+        @Override
+        public int hashCode() {
+            // Replay compilation mandates use of stable hash codes
+            return declaringClass.getName().hashCode() ^ name.hashCode();
+        }
+
+        private MethodIdHolder resolve(MetaAccessProvider metaAccess) {
+            return (MethodIdHolder) metaAccess.lookupJavaMethod(resolveJava());
+        }
+
+        private Executable resolveJava() {
+            try {
+                Executable res;
+                Class<?>[] parameterTypes = isStatic ? argumentTypes : Arrays.copyOfRange(argumentTypes, 1, argumentTypes.length);
+                if (name.equals("<init>")) {
+                    res = declaringClass.getDeclaredConstructor(parameterTypes);
+                } else {
+                    res = declaringClass.getDeclaredMethod(name, parameterTypes);
+                }
+                assert Modifier.isStatic(res.getModifiers()) == isStatic;
+                return res;
+            } catch (NoSuchMethodException | SecurityException e) {
+                throw new GraalInternalError(e);
+            }
+        }
+
+        @Override
+        public String toString() {
+            StringBuilder sb = new StringBuilder(declaringClass.getName()).append('.').append(name).append('(');
+            for (Class<?> p : argumentTypes) {
+                if (sb.charAt(sb.length() - 1) != '(') {
+                    sb.append(", ");
+                }
+                sb.append(p.getSimpleName());
+            }
+            return sb.append(')').toString();
+        }
+    }
+
+    private final MetaAccessProvider metaAccess;
+
+    /**
+     * Initial list of entries.
+     */
+    private final List<MethodKey<V>> registrations;
+
+    /**
+     * Entry array that is initialized upon first call to {@link #get(MethodIdHolder)}.
+     *
+     * Note: this must be volatile since double-checked locking is used to initialize it
+     */
+    private volatile V[] entries;
+
+    /**
+     * The minimum {@linkplain MethodIdHolder#getMethodId() id} for a key in this map.
+     */
+    private int minId = Integer.MAX_VALUE;
+
+    public MethodIdMap(MetaAccessProvider metaAccess) {
+        this.metaAccess = metaAccess;
+        this.registrations = new ArrayList<>(INITIAL_CAPACITY);
+    }
+
+    private static final int INITIAL_CAPACITY = 64;
+
+    /**
+     * Adds an entry to this map for a specified method.
+     *
+     * @param value value to be associated with the specified method
+     * @param declaringClass the class declaring the method
+     * @param name the name of the method
+     * @param argumentTypes the argument types of the method. Element 0 of this array must be the
+     *            {@link Class} value for {@link Receiver} iff the method is non-static.
+     * @return an object representing the method
+     */
+    public MethodKey<V> put(V value, Class<?> declaringClass, String name, Class<?>... argumentTypes) {
+        MethodKey<V> methodKey = new MethodKey<>(value, declaringClass, name, argumentTypes);
+        assert entries == null : "registration is closed";
+        assert !registrations.contains(methodKey) : "a value is already registered for " + methodKey;
+        registrations.add(methodKey);
+        return methodKey;
+    }
+
+    @SuppressWarnings("unchecked")
+    protected V[] allocateEntries(int length) {
+        return (V[]) new Object[length];
+    }
+
+    /**
+     * Determines if a method denoted by a given {@link MethodKey} is in this map.
+     */
+    public boolean containsKey(MethodKey<V> key) {
+        return registrations.contains(key);
+    }
+
+    public V get(MethodIdHolder method) {
+        if (entries == null) {
+            // 'assignIds' synchronizes on a global lock which ensures thread safe
+            // allocation of identifiers across all MethodIdHolder objects
+            MethodIdHolder.assignIds(new Consumer<MethodIdAllocator>() {
+
+                public void accept(MethodIdAllocator idAllocator) {
+                    if (entries == null) {
+                        if (registrations.isEmpty()) {
+                            entries = allocateEntries(0);
+                        } else {
+                            int max = Integer.MIN_VALUE;
+                            for (MethodKey<V> methodKey : registrations) {
+                                MethodIdHolder m = methodKey.resolve(metaAccess);
+                                int id = idAllocator.assignId(m);
+                                if (id < minId) {
+                                    minId = id;
+                                }
+                                if (id > max) {
+                                    max = id;
+                                }
+                                methodKey.id = id;
+                            }
+
+                            int length = (max - minId) + 1;
+                            entries = allocateEntries(length);
+                            for (MethodKey<V> m : registrations) {
+                                int index = m.id - minId;
+                                entries[index] = m.value;
+                            }
+                        }
+                    }
+                }
+            });
+        }
+
+        int id = method.getMethodId();
+        int index = id - minId;
+        return index >= 0 && index < entries.length ? entries[index] : null;
+    }
+
+    @Override
+    public String toString() {
+        return registrations.stream().map(MethodKey::toString).collect(Collectors.joining(", "));
+    }
+
+    public MetaAccessProvider getMetaAccess() {
+        return metaAccess;
+    }
+
+    public int size() {
+        return registrations.size();
+    }
+}
--- a/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/MethodSubstitutionPlugin.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.graphbuilderconf/src/com/oracle/graal/graphbuilderconf/MethodSubstitutionPlugin.java	Mon Apr 13 21:51:19 2015 +0200
@@ -30,7 +30,7 @@
 
 import com.oracle.graal.api.meta.*;
 import com.oracle.graal.compiler.common.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 
 /**
@@ -121,8 +121,8 @@
                 return m;
             }
         }
-        throw new GraalInternalError("No method found in %s compatible with the signature (%s)", declaringClass.getName(), Arrays.asList(parameters).stream().map(c -> c.getSimpleName()).collect(
-                        Collectors.joining(",")));
+        throw new GraalInternalError("No method found in %s compatible with \"%s(%s)\"", declaringClass.getName(), name, Arrays.asList(parameters).stream().map(c -> c.getSimpleName()).collect(
+                        Collectors.joining(", ")));
     }
 
     /**
--- a/graal/com.oracle.graal.hotspot.test/src/com/oracle/graal/hotspot/test/HotSpotCryptoSubstitutionTest.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.hotspot.test/src/com/oracle/graal/hotspot/test/HotSpotCryptoSubstitutionTest.java	Mon Apr 13 21:51:19 2015 +0200
@@ -22,7 +22,7 @@
  */
 package com.oracle.graal.hotspot.test;
 
-import static com.oracle.graal.java.AbstractBytecodeParser.IntrinsicContext.*;
+import static com.oracle.graal.java.IntrinsicContext.*;
 
 import java.io.*;
 import java.lang.reflect.*;
@@ -39,7 +39,6 @@
 import com.oracle.graal.hotspot.*;
 import com.oracle.graal.hotspot.bridge.CompilerToVM.CodeInstallResult;
 import com.oracle.graal.hotspot.meta.*;
-import com.oracle.graal.java.AbstractBytecodeParser.IntrinsicContext;
 import com.oracle.graal.java.*;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.StructuredGraph.*;
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotGraphBuilderPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotGraphBuilderPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -34,8 +34,8 @@
 import com.oracle.graal.api.replacements.*;
 import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
 import com.oracle.graal.graphbuilderconf.InvocationPlugins.Registration;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.hotspot.*;
 import com.oracle.graal.hotspot.nodes.*;
 import com.oracle.graal.hotspot.nodes.ClassQueryNode.Query;
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotInvocationPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotInvocationPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -33,6 +33,7 @@
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graph.iterators.*;
 import com.oracle.graal.graphbuilderconf.*;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.hotspot.*;
 import com.oracle.graal.hotspot.phases.*;
 import com.oracle.graal.hotspot.replacements.*;
@@ -77,7 +78,7 @@
     @Override
     public InvocationPlugin lookupInvocation(ResolvedJavaMethod method) {
         if (methodHandleClass == null) {
-            methodHandleClass = metaAccess.lookupJavaType(MethodHandle.class);
+            methodHandleClass = plugins.getMetaAccess().lookupJavaType(MethodHandle.class);
         }
         if (method.getDeclaringClass().equals(methodHandleClass)) {
             HotSpotResolvedJavaMethod hsMethod = (HotSpotResolvedJavaMethod) method;
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaMethodImpl.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaMethodImpl.java	Mon Apr 13 21:51:19 2015 +0200
@@ -42,7 +42,7 @@
 /**
  * Implementation of {@link JavaMethod} for resolved HotSpot methods.
  */
-public final class HotSpotResolvedJavaMethodImpl extends HotSpotMethod implements HotSpotResolvedJavaMethod, HotSpotProxified, InvocationPluginIdHolder {
+public final class HotSpotResolvedJavaMethodImpl extends HotSpotMethod implements HotSpotResolvedJavaMethod, HotSpotProxified, MethodIdHolder {
 
     private static final long serialVersionUID = -5486975070147586588L;
 
@@ -742,14 +742,14 @@
         return runtime().getCompilerToVM().hasCompiledCodeForOSR(metaspaceMethod, entryBCI, level);
     }
 
-    private int invocationPluginId;
+    private int methodId;
 
-    public void setInvocationPluginId(int id) {
-        assert invocationPluginId == 0;
-        invocationPluginId = id;
+    public void setMethodId(int id) {
+        assert methodId == 0;
+        methodId = id;
     }
 
-    public int getInvocationPluginId() {
-        return invocationPluginId;
+    public int getMethodId() {
+        return methodId;
     }
 }
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/SnippetStub.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/SnippetStub.java	Mon Apr 13 21:51:19 2015 +0200
@@ -32,7 +32,6 @@
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
 import com.oracle.graal.hotspot.*;
 import com.oracle.graal.hotspot.meta.*;
-import com.oracle.graal.java.AbstractBytecodeParser.ReplacementContext;
 import com.oracle.graal.java.*;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.StructuredGraph.AllowAssumptions;
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/AbstractBytecodeParser.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/AbstractBytecodeParser.java	Mon Apr 13 21:51:19 2015 +0200
@@ -20,30 +20,24 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
-
 package com.oracle.graal.java;
 
 import static com.oracle.graal.api.code.TypeCheckHints.*;
 import static com.oracle.graal.api.meta.DeoptimizationReason.*;
 import static com.oracle.graal.bytecode.Bytecodes.*;
 import static com.oracle.graal.java.AbstractBytecodeParser.Options.*;
-import static com.oracle.graal.java.HIRFrameStateBuilder.*;
 
 import java.util.*;
 
 import com.oracle.graal.api.code.*;
 import com.oracle.graal.api.meta.*;
-import com.oracle.graal.api.replacements.*;
 import com.oracle.graal.bytecode.*;
 import com.oracle.graal.compiler.common.*;
 import com.oracle.graal.compiler.common.calc.*;
 import com.oracle.graal.debug.*;
 import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.graphbuilderconf.GraphBuilderContext.Replacement;
 import com.oracle.graal.java.BciBlockMapping.BciBlock;
-import com.oracle.graal.java.GraphBuilderPhase.Instance.BytecodeParser;
 import com.oracle.graal.nodes.*;
-import com.oracle.graal.nodes.java.*;
 import com.oracle.graal.nodes.type.*;
 import com.oracle.graal.options.*;
 import com.oracle.graal.phases.*;
@@ -83,153 +77,6 @@
     }
 
     /**
-     * Information about a substitute method being parsed in lieu of an original method. This can
-     * happen when a call to a {@link MethodSubstitution} is encountered or the root of compilation
-     * is a {@link MethodSubstitution} or a snippet.
-     */
-    public static class ReplacementContext implements Replacement {
-        /**
-         * The method being replaced.
-         */
-        final ResolvedJavaMethod method;
-
-        /**
-         * The replacement method.
-         */
-        final ResolvedJavaMethod replacement;
-
-        public ReplacementContext(ResolvedJavaMethod method, ResolvedJavaMethod substitute) {
-            this.method = method;
-            this.replacement = substitute;
-        }
-
-        public ResolvedJavaMethod getOriginalMethod() {
-            return method;
-        }
-
-        public ResolvedJavaMethod getReplacementMethod() {
-            return replacement;
-        }
-
-        public boolean isIntrinsic() {
-            return false;
-        }
-
-        /**
-         * Determines if a call within the compilation scope of a replacement represents a call to
-         * the original method.
-         */
-        public boolean isCallToOriginal(ResolvedJavaMethod targetMethod) {
-            return method.equals(targetMethod) || replacement.equals(targetMethod);
-        }
-
-        IntrinsicContext asIntrinsic() {
-            return null;
-        }
-
-        @Override
-        public String toString() {
-            return "Replacement{original: " + method.format("%H.%n(%p)") + ", replacement: " + replacement.format("%H.%n(%p)") + "}";
-        }
-    }
-
-    /**
-     * Context for a replacement being inlined as a compiler intrinsic. Deoptimization within a
-     * compiler intrinsic must replay the intrinsified call. This context object retains the
-     * information required to build a frame state denoting the JVM state just before the
-     * intrinsified call.
-     */
-    public static class IntrinsicContext extends ReplacementContext {
-
-        /**
-         * BCI denoting an intrinsic is being parsed for inlining after the caller has been parsed.
-         */
-        public static final int POST_PARSE_INLINE_BCI = -1;
-
-        /**
-         * BCI denoting an intrinsic is the compilation root.
-         */
-        public static final int ROOT_COMPILATION_BCI = -2;
-
-        /**
-         * The arguments to the intrinsic.
-         */
-        ValueNode[] args;
-
-        /**
-         * The BCI of the intrinsified invocation, {@link #POST_PARSE_INLINE_BCI} or
-         * {@link #ROOT_COMPILATION_BCI}.
-         */
-        final int bci;
-
-        private FrameState stateBeforeCache;
-
-        public IntrinsicContext(ResolvedJavaMethod method, ResolvedJavaMethod substitute, ValueNode[] args, int bci) {
-            super(method, substitute);
-            assert bci != POST_PARSE_INLINE_BCI || args == null;
-            this.args = args;
-            this.bci = bci;
-            assert !isCompilationRoot() || method.hasBytecodes() : "Cannot intrinsic for native or abstract method " + method.format("%H.%n(%p)");
-        }
-
-        @Override
-        public boolean isIntrinsic() {
-            return true;
-        }
-
-        public boolean isPostParseInlined() {
-            return bci == POST_PARSE_INLINE_BCI;
-        }
-
-        public boolean isCompilationRoot() {
-            return bci == ROOT_COMPILATION_BCI;
-        }
-
-        public FrameState getInvokeStateBefore(StructuredGraph graph, BytecodeParser parent) {
-            if (isCompilationRoot()) {
-                int maxLocals = method.getMaxLocals();
-                // The 'args' were initialized based on the intrinsic method but a
-                // frame state's 'locals' needs to have the same length as the frame
-                // state method's 'max_locals'.
-                ValueNode[] locals = maxLocals == args.length ? args : Arrays.copyOf(args, maxLocals);
-                ValueNode[] stack = EMPTY_ARRAY;
-                int stackSize = 0;
-                ValueNode[] locks = EMPTY_ARRAY;
-                List<MonitorIdNode> monitorIds = Collections.emptyList();
-                return graph.add(new FrameState(null, method, 0, locals, stack, stackSize, locks, monitorIds, false, false));
-            } else if (isPostParseInlined()) {
-                return graph.add(new FrameState(BytecodeFrame.BEFORE_BCI));
-            } else {
-                assert !parent.parsingReplacement() || parent.replacementContext instanceof IntrinsicContext;
-                if (stateBeforeCache == null) {
-                    assert stateBeforeCache == null;
-
-                    // Find the non-intrinsic ancestor calling the intrinsified method
-                    BytecodeParser ancestor = parent;
-                    while (ancestor.parsingReplacement()) {
-                        assert ancestor.replacementContext instanceof IntrinsicContext;
-                        ancestor = ancestor.getParent();
-                    }
-                    FrameState stateDuring = ancestor.getFrameState().create(ancestor.bci(), ancestor.getParent(), true);
-                    stateBeforeCache = stateDuring.duplicateModifiedBeforeCall(bci, Kind.Void, args);
-                }
-                return stateBeforeCache;
-            }
-        }
-
-        @Override
-        IntrinsicContext asIntrinsic() {
-            return this;
-        }
-
-        @Override
-        public String toString() {
-            return "Intrinsic{original: " + method.format("%H.%n(%p)") + ", replacement: " + replacement.format("%H.%n(%p)") + ", bci: " + bci +
-                            (args == null ? "" : ", args: " + Arrays.toString(args)) + (stateBeforeCache == null ? "" : ", stateBefore: " + stateBeforeCache) + "}";
-        }
-    }
-
-    /**
      * The minimum value to which {@link Options#TraceBytecodeParserLevel} must be set to trace the
      * bytecode instructions as they are parsed.
      */
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPhase.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPhase.java	Mon Apr 13 21:51:19 2015 +0200
@@ -50,7 +50,6 @@
 import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.InlineInvokePlugin.InlineInfo;
 import com.oracle.graal.graphbuilderconf.InvocationPlugins.InvocationPluginReceiver;
-import com.oracle.graal.java.AbstractBytecodeParser.ReplacementContext;
 import com.oracle.graal.java.BciBlockMapping.BciBlock;
 import com.oracle.graal.java.BciBlockMapping.ExceptionDispatchBlock;
 import com.oracle.graal.nodeinfo.*;
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/HIRFrameStateBuilder.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/HIRFrameStateBuilder.java	Mon Apr 13 21:51:19 2015 +0200
@@ -32,7 +32,6 @@
 import com.oracle.graal.compiler.common.type.*;
 import com.oracle.graal.debug.*;
 import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.java.AbstractBytecodeParser.IntrinsicContext;
 import com.oracle.graal.java.BciBlockMapping.BciBlock;
 import com.oracle.graal.java.GraphBuilderPhase.Instance.BytecodeParser;
 import com.oracle.graal.nodeinfo.*;
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/IntrinsicContext.java	Mon Apr 13 21:51:19 2015 +0200
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.java;
+
+import static com.oracle.graal.java.HIRFrameStateBuilder.*;
+
+import java.util.*;
+
+import com.oracle.graal.api.code.*;
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.java.GraphBuilderPhase.Instance.*;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.java.*;
+
+/**
+ * Context for a replacement being inlined as a compiler intrinsic. Deoptimization within a compiler
+ * intrinsic must replay the intrinsified call. This context object retains the information required
+ * to build a frame state denoting the JVM state just before the intrinsified call.
+ */
+public class IntrinsicContext extends ReplacementContext {
+
+    /**
+     * BCI denoting an intrinsic is being parsed for inlining after the caller has been parsed.
+     */
+    public static final int POST_PARSE_INLINE_BCI = -1;
+
+    /**
+     * BCI denoting an intrinsic is the compilation root.
+     */
+    public static final int ROOT_COMPILATION_BCI = -2;
+
+    /**
+     * The arguments to the intrinsic.
+     */
+    ValueNode[] args;
+
+    /**
+     * The BCI of the intrinsified invocation, {@link #POST_PARSE_INLINE_BCI} or
+     * {@link #ROOT_COMPILATION_BCI}.
+     */
+    final int bci;
+
+    private FrameState stateBeforeCache;
+
+    public IntrinsicContext(ResolvedJavaMethod method, ResolvedJavaMethod substitute, ValueNode[] args, int bci) {
+        super(method, substitute);
+        assert bci != POST_PARSE_INLINE_BCI || args == null;
+        this.args = args;
+        this.bci = bci;
+        assert !isCompilationRoot() || method.hasBytecodes() : "Cannot intrinsic for native or abstract method " + method.format("%H.%n(%p)");
+    }
+
+    @Override
+    public boolean isIntrinsic() {
+        return true;
+    }
+
+    public boolean isPostParseInlined() {
+        return bci == POST_PARSE_INLINE_BCI;
+    }
+
+    public boolean isCompilationRoot() {
+        return bci == ROOT_COMPILATION_BCI;
+    }
+
+    public FrameState getInvokeStateBefore(StructuredGraph graph, BytecodeParser parent) {
+        if (isCompilationRoot()) {
+            int maxLocals = method.getMaxLocals();
+            // The 'args' were initialized based on the intrinsic method but a
+            // frame state's 'locals' needs to have the same length as the frame
+            // state method's 'max_locals'.
+            ValueNode[] locals = maxLocals == args.length ? args : Arrays.copyOf(args, maxLocals);
+            ValueNode[] stack = EMPTY_ARRAY;
+            int stackSize = 0;
+            ValueNode[] locks = EMPTY_ARRAY;
+            List<MonitorIdNode> monitorIds = Collections.emptyList();
+            return graph.add(new FrameState(null, method, 0, locals, stack, stackSize, locks, monitorIds, false, false));
+        } else if (isPostParseInlined()) {
+            return graph.add(new FrameState(BytecodeFrame.BEFORE_BCI));
+        } else {
+            assert !parent.parsingReplacement() || parent.replacementContext instanceof IntrinsicContext;
+            if (stateBeforeCache == null) {
+                assert stateBeforeCache == null;
+
+                // Find the non-intrinsic ancestor calling the intrinsified method
+                BytecodeParser ancestor = parent;
+                while (ancestor.parsingReplacement()) {
+                    assert ancestor.replacementContext instanceof IntrinsicContext;
+                    ancestor = ancestor.getParent();
+                }
+                FrameState stateDuring = ancestor.getFrameState().create(ancestor.bci(), ancestor.getParent(), true);
+                stateBeforeCache = stateDuring.duplicateModifiedBeforeCall(bci, Kind.Void, args);
+            }
+            return stateBeforeCache;
+        }
+    }
+
+    @Override
+    IntrinsicContext asIntrinsic() {
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        return "Intrinsic{original: " + method.format("%H.%n(%p)") + ", replacement: " + replacement.format("%H.%n(%p)") + ", bci: " + bci + (args == null ? "" : ", args: " + Arrays.toString(args)) +
+                        (stateBeforeCache == null ? "" : ", stateBefore: " + stateBeforeCache) + "}";
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/ReplacementContext.java	Mon Apr 13 21:51:19 2015 +0200
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.java;
+
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.api.replacements.*;
+import com.oracle.graal.graphbuilderconf.GraphBuilderContext.Replacement;
+
+/**
+ * Information about a substitute method being parsed in lieu of an original method. This can happen
+ * when a call to a {@link MethodSubstitution} is encountered or the root of compilation is a
+ * {@link MethodSubstitution} or a snippet.
+ */
+public class ReplacementContext implements Replacement {
+    /**
+     * The method being replaced.
+     */
+    final ResolvedJavaMethod method;
+
+    /**
+     * The replacement method.
+     */
+    final ResolvedJavaMethod replacement;
+
+    public ReplacementContext(ResolvedJavaMethod method, ResolvedJavaMethod substitute) {
+        this.method = method;
+        this.replacement = substitute;
+    }
+
+    public ResolvedJavaMethod getOriginalMethod() {
+        return method;
+    }
+
+    public ResolvedJavaMethod getReplacementMethod() {
+        return replacement;
+    }
+
+    public boolean isIntrinsic() {
+        return false;
+    }
+
+    /**
+     * Determines if a call within the compilation scope of a replacement represents a call to the
+     * original method.
+     */
+    public boolean isCallToOriginal(ResolvedJavaMethod targetMethod) {
+        return method.equals(targetMethod) || replacement.equals(targetMethod);
+    }
+
+    IntrinsicContext asIntrinsic() {
+        return null;
+    }
+
+    @Override
+    public String toString() {
+        return "Replacement{original: " + method.format("%H.%n(%p)") + ", replacement: " + replacement.format("%H.%n(%p)") + "}";
+    }
+}
--- a/graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64GraphBuilderPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64GraphBuilderPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -29,10 +29,10 @@
 import com.oracle.graal.amd64.*;
 import com.oracle.graal.api.code.*;
 import com.oracle.graal.api.meta.*;
+import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
-import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
 import com.oracle.graal.graphbuilderconf.InvocationPlugins.Registration;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.java.*;
 import com.oracle.graal.replacements.*;
--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraphKit.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraphKit.java	Mon Apr 13 21:51:19 2015 +0200
@@ -30,7 +30,6 @@
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
-import com.oracle.graal.java.AbstractBytecodeParser.IntrinsicContext;
 import com.oracle.graal.java.*;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/IntrinsicGraphBuilder.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/IntrinsicGraphBuilder.java	Mon Apr 13 21:51:19 2015 +0200
@@ -27,7 +27,7 @@
 import com.oracle.graal.compiler.common.*;
 import com.oracle.graal.compiler.common.type.*;
 import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.StructuredGraph.AllowAssumptions;
--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/ReplacementsImpl.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/ReplacementsImpl.java	Mon Apr 13 21:51:19 2015 +0200
@@ -47,8 +47,6 @@
 import com.oracle.graal.graphbuilderconf.*;
 import com.oracle.graal.graphbuilderconf.GraphBuilderConfiguration.Plugins;
 import com.oracle.graal.graphbuilderconf.GraphBuilderContext.Replacement;
-import com.oracle.graal.java.AbstractBytecodeParser.IntrinsicContext;
-import com.oracle.graal.java.AbstractBytecodeParser.ReplacementContext;
 import com.oracle.graal.java.*;
 import com.oracle.graal.java.GraphBuilderPhase.Instance;
 import com.oracle.graal.nodes.*;
--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/StandardGraphBuilderPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/StandardGraphBuilderPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -38,8 +38,8 @@
 import com.oracle.graal.compiler.common.type.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
 import com.oracle.graal.graphbuilderconf.InvocationPlugins.Registration;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.calc.*;
 import com.oracle.graal.nodes.debug.*;
--- a/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/substitutions/TruffleGraphBuilderPlugins.java	Mon Apr 13 16:27:50 2015 +0200
+++ b/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/substitutions/TruffleGraphBuilderPlugins.java	Mon Apr 13 21:51:19 2015 +0200
@@ -32,8 +32,8 @@
 import com.oracle.graal.compiler.common.type.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.graphbuilderconf.*;
-import com.oracle.graal.graphbuilderconf.InvocationPlugins.Receiver;
 import com.oracle.graal.graphbuilderconf.InvocationPlugins.Registration;
+import com.oracle.graal.graphbuilderconf.MethodIdMap.Receiver;
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.calc.*;
 import com.oracle.graal.nodes.extended.*;