Merge

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/Address.java

@@ -89,6 +89,7 @@ public interface Address {
   public Address    getAddressAt       (long offset) throws UnmappedAddressException, UnalignedAddressException;
   /** Returns the decoded address at the given offset */
   public Address    getCompOopAddressAt (long offset) throws UnmappedAddressException, UnalignedAddressException;
+  public Address    getCompKlassAddressAt (long offset) throws UnmappedAddressException, UnalignedAddressException;
 
   //
   // Java-related routines

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/Debugger.java

@@ -121,6 +121,9 @@ public interface Debugger extends SymbolLookup, ThreadAccess {
   public long getHeapOopSize();
   public long getNarrowOopBase();
   public int  getNarrowOopShift();
+  public long getKlassPtrSize();
+  public long getNarrowKlassBase();
+  public int  getNarrowKlassShift();
 
   public ReadResult readBytesFromProcess(long address, long numBytes)
     throws DebuggerException;

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/DebuggerBase.java

@@ -58,6 +58,10 @@ public abstract class DebuggerBase implements Debugger {
   protected long heapOopSize;
   protected long narrowOopBase;  // heap base for compressed oops.
   protected int  narrowOopShift; // shift to decode compressed oops.
+  // class metadata space
+  protected long klassPtrSize;
+  protected long narrowKlassBase;  // heap base for compressed klass ptrs.
+  protected int  narrowKlassShift; // shift to decode compressed klass ptrs.
   // Should be initialized if desired by calling initCache()
   private PageCache cache;
 
@@ -159,10 +163,14 @@ public abstract class DebuggerBase implements Debugger {
     javaPrimitiveTypesConfigured = true;
   }
 
-  public void putHeapConst(long heapOopSize, long narrowOopBase, int narrowOopShift) {
+  public void putHeapConst(long heapOopSize, long klassPtrSize, long narrowOopBase, int narrowOopShift,
+                           long narrowKlassBase, int narrowKlassShift) {
     this.heapOopSize = heapOopSize;
+    this.klassPtrSize = klassPtrSize;
     this.narrowOopBase = narrowOopBase;
     this.narrowOopShift = narrowOopShift;
+    this.narrowKlassBase = narrowKlassBase;
+    this.narrowKlassShift = narrowKlassShift;
   }
 
   /** May be called by subclasses if desired to initialize the page
@@ -464,6 +472,15 @@ public abstract class DebuggerBase implements Debugger {
     return value;
   }
 
+  protected long readCompKlassAddressValue(long address)
+    throws UnmappedAddressException, UnalignedAddressException {
+    long value = readCInteger(address, getKlassPtrSize(), true);
+    if (value != 0) {
+      value = (long)(narrowKlassBase + (long)(value << narrowKlassShift));
+    }
+    return value;
+  }
+
   protected void writeAddressValue(long address, long value)
     throws UnmappedAddressException, UnalignedAddressException {
     writeCInteger(address, machDesc.getAddressSize(), value);
@@ -551,4 +568,15 @@ public abstract class DebuggerBase implements Debugger {
   public int getNarrowOopShift() {
     return narrowOopShift;
   }
+
+  public long getKlassPtrSize() {
+    return klassPtrSize;
+  }
+
+  public long getNarrowKlassBase() {
+    return narrowKlassBase;
+  }
+  public int getNarrowKlassShift() {
+    return narrowKlassShift;
+  }
 }

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/JVMDebugger.java

@@ -42,5 +42,7 @@ public interface JVMDebugger extends Debugger {
                                               long jintSize,
                                               long jlongSize,
                                               long jshortSize);
-  public void putHeapConst(long heapOopSize, long narrowOopBase, int narrowOopShift);
+  public void putHeapConst(long heapOopSize, long klassPtrSize,
+                           long narrowKlassBase, int narrowKlassShift,
+                           long narrowOopBase, int narrowOopShift);
 }

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdAddress.java

@@ -79,6 +79,11 @@ class BsdAddress implements Address {
         return debugger.readCompOopAddress(addr + offset);
     }
 
+    public Address getCompKlassAddressAt(long offset)
+            throws UnalignedAddressException, UnmappedAddressException {
+        return debugger.readCompOopAddress(addr + offset);
+    }
+
     //
     // Java-related routines
     //

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebugger.java

@@ -46,6 +46,7 @@ public interface BsdDebugger extends JVMDebugger {
     throws DebuggerException;
   public BsdAddress readAddress(long address) throws DebuggerException;
   public BsdAddress readCompOopAddress(long address) throws DebuggerException;
+  public BsdAddress readCompKlassAddress(long address) throws DebuggerException;
   public BsdOopHandle readOopHandle(long address) throws DebuggerException;
   public BsdOopHandle readCompOopHandle(long address) throws DebuggerException;
   public long[]       getThreadIntegerRegisterSet(int lwp_id) throws DebuggerException;

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java

@@ -431,6 +431,12 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
         return (value == 0 ? null : new BsdAddress(this, value));
     }
 
+    public BsdAddress readCompKlassAddress(long address)
+            throws UnmappedAddressException, UnalignedAddressException {
+        long value = readCompKlassAddressValue(address);
+        return (value == 0 ? null : new BsdAddress(this, value));
+    }
+
     /** From the BsdDebugger interface */
     public BsdOopHandle readOopHandle(long address)
             throws UnmappedAddressException, UnalignedAddressException,

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/dummy/DummyAddress.java

@@ -80,6 +80,10 @@ class DummyAddress implements Address {
     return new DummyAddress(debugger, badLong);
   }
 
+  public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
+    return new DummyAddress(debugger, badLong);
+  }
+
   //
   // Java-related routines
   //

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxAddress.java

@@ -79,6 +79,11 @@ class LinuxAddress implements Address {
         return debugger.readCompOopAddress(addr + offset);
     }
 
+    public Address getCompKlassAddressAt(long offset)
+            throws UnalignedAddressException, UnmappedAddressException {
+        return debugger.readCompKlassAddress(addr + offset);
+    }
+
     //
     // Java-related routines
     //

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebugger.java

@@ -46,6 +46,7 @@ public interface LinuxDebugger extends JVMDebugger {
     throws DebuggerException;
   public LinuxAddress readAddress(long address) throws DebuggerException;
   public LinuxAddress readCompOopAddress(long address) throws DebuggerException;
+  public LinuxAddress readCompKlassAddress(long address) throws DebuggerException;
   public LinuxOopHandle readOopHandle(long address) throws DebuggerException;
   public LinuxOopHandle readCompOopHandle(long address) throws DebuggerException;
   public long[]       getThreadIntegerRegisterSet(int lwp_id) throws DebuggerException;

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java

@@ -429,6 +429,12 @@ public class LinuxDebuggerLocal extends DebuggerBase implements LinuxDebugger {
         return (value == 0 ? null : new LinuxAddress(this, value));
     }
 
+    public LinuxAddress readCompKlassAddress(long address)
+            throws UnmappedAddressException, UnalignedAddressException {
+        long value = readCompKlassAddressValue(address);
+        return (value == 0 ? null : new LinuxAddress(this, value));
+    }
+
     /** From the LinuxDebugger interface */
     public LinuxOopHandle readOopHandle(long address)
             throws UnmappedAddressException, UnalignedAddressException,

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/proc/ProcAddress.java

@@ -76,6 +76,10 @@ class ProcAddress implements Address {
     return debugger.readCompOopAddress(addr + offset);
   }
 
+  public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
+    return debugger.readCompKlassAddress(addr + offset);
+  }
+
   //
   // Java-related routines
   //

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/proc/ProcDebugger.java

@@ -47,6 +47,7 @@ public interface ProcDebugger extends JVMDebugger {
     throws DebuggerException;
   public ProcAddress   readAddress(long address) throws DebuggerException;
   public ProcAddress   readCompOopAddress(long address) throws DebuggerException;
+  public ProcAddress   readCompKlassAddress(long address) throws DebuggerException;
   public ProcOopHandle readOopHandle(long address) throws DebuggerException;
   public ProcOopHandle readCompOopHandle(long address) throws DebuggerException;
   public long[]       getThreadIntegerRegisterSet(int tid) throws DebuggerException;

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/proc/ProcDebuggerLocal.java

@@ -351,6 +351,12 @@ public class ProcDebuggerLocal extends DebuggerBase implements ProcDebugger {
         return (value == 0 ? null : new ProcAddress(this, value));
     }
 
+    public ProcAddress readCompKlassAddress(long address)
+    throws UnmappedAddressException, UnalignedAddressException {
+        long value = readCompKlassAddressValue(address);
+        return (value == 0 ? null : new ProcAddress(this, value));
+    }
+
     /** From the ProcDebugger interface */
     public ProcOopHandle readOopHandle(long address)
     throws UnmappedAddressException, UnalignedAddressException, NotInHeapException {

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/remote/RemoteAddress.java

@@ -74,6 +74,9 @@ class RemoteAddress implements Address {
   public Address getCompOopAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
     return debugger.readCompOopAddress(addr + offset);
   }
+  public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
+    return debugger.readCompKlassAddress(addr + offset);
+  }
 
   //
   // Java-related routines

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/remote/RemoteDebugger.java

@@ -68,6 +68,9 @@ public interface RemoteDebugger extends Remote {
   public long      getHeapOopSize() throws RemoteException;
   public long      getNarrowOopBase() throws RemoteException;
   public int       getNarrowOopShift() throws RemoteException;
+  public long      getKlassPtrSize() throws RemoteException;
+  public long      getNarrowKlassBase() throws RemoteException;
+  public int       getNarrowKlassShift() throws RemoteException;
 
   public boolean   areThreadsEqual(long addrOrId1, boolean isAddress1,
                                    long addrOrId2, boolean isAddress2) throws RemoteException;

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/remote/RemoteDebuggerClient.java

@@ -99,7 +99,10 @@ public class RemoteDebuggerClient extends DebuggerBase implements JVMDebugger {
       javaPrimitiveTypesConfigured = true;
       narrowOopBase  = remoteDebugger.getNarrowOopBase();
       narrowOopShift = remoteDebugger.getNarrowOopShift();
+      narrowKlassBase  = remoteDebugger.getNarrowKlassBase();
+      narrowKlassShift = remoteDebugger.getNarrowKlassShift();
       heapOopSize  = remoteDebugger.getHeapOopSize();
+      klassPtrSize  = remoteDebugger.getKlassPtrSize();
     }
     catch (RemoteException e) {
       throw new DebuggerException(e);
@@ -319,6 +322,12 @@ public class RemoteDebuggerClient extends DebuggerBase implements JVMDebugger {
     return (value == 0 ? null : new RemoteAddress(this, value));
   }
 
+  RemoteAddress readCompKlassAddress(long address)
+    throws UnmappedAddressException, UnalignedAddressException {
+    long value = readCompKlassAddressValue(address);
+    return (value == 0 ? null : new RemoteAddress(this, value));
+  }
+
   RemoteOopHandle readOopHandle(long address)
     throws UnmappedAddressException, UnalignedAddressException, NotInHeapException {
     long value = readAddressValue(address);

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/remote/RemoteDebuggerServer.java

@@ -126,6 +126,18 @@ public class RemoteDebuggerServer extends UnicastRemoteObject
     return debugger.getNarrowOopShift();
   }
 
+  public long getKlassPtrSize() throws RemoteException {
+    return debugger.getHeapOopSize();
+  }
+
+  public long getNarrowKlassBase() throws RemoteException {
+    return debugger.getNarrowKlassBase();
+  }
+
+  public int  getNarrowKlassShift() throws RemoteException {
+    return debugger.getNarrowKlassShift();
+  }
+
   public boolean   areThreadsEqual(long addrOrId1, boolean isAddress1,
                                    long addrOrId2, boolean isAddress2) throws RemoteException {
     ThreadProxy t1 = getThreadProxy(addrOrId1, isAddress1);

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/windbg/WindbgAddress.java

@@ -76,6 +76,10 @@ class WindbgAddress implements Address {
     return debugger.readCompOopAddress(addr + offset);
   }
 
+  public Address getCompKlassAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
+    return debugger.readCompKlassAddress(addr + offset);
+  }
+
   //
   // Java-related routines
   //

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/windbg/WindbgDebugger.java

@@ -46,6 +46,7 @@ public interface WindbgDebugger extends JVMDebugger {
     throws DebuggerException;
   public WindbgAddress readAddress(long address) throws DebuggerException;
   public WindbgAddress readCompOopAddress(long address) throws DebuggerException;
+  public WindbgAddress readCompKlassAddress(long address) throws DebuggerException;
   public WindbgOopHandle readOopHandle(long address) throws DebuggerException;
   public WindbgOopHandle readCompOopHandle(long address) throws DebuggerException;
 

hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/windbg/WindbgDebuggerLocal.java

@@ -321,6 +321,11 @@ public class WindbgDebuggerLocal extends DebuggerBase implements WindbgDebugger
     return (WindbgAddress) newAddress(readCompOopAddressValue(address));
   }
 
+  public WindbgAddress readCompKlassAddress(long address)
+    throws UnmappedAddressException, UnalignedAddressException {
+    return (WindbgAddress) newAddress(readCompKlassAddressValue(address));
+  }
+
   /** From the WindbgDebugger interface */
   public WindbgOopHandle readOopHandle(long address)
     throws UnmappedAddressException, UnalignedAddressException, NotInHeapException {

hotspot/agent/src/share/classes/sun/jvm/hotspot/memory/Universe.java

@@ -53,6 +53,8 @@ public class Universe {
 
   private static AddressField narrowOopBaseField;
   private static CIntegerField narrowOopShiftField;
+  private static AddressField narrowKlassBaseField;
+  private static CIntegerField narrowKlassShiftField;
 
   static {
     VM.registerVMInitializedObserver(new Observer() {
@@ -86,6 +88,8 @@ public class Universe {
 
     narrowOopBaseField = type.getAddressField("_narrow_oop._base");
     narrowOopShiftField = type.getCIntegerField("_narrow_oop._shift");
+    narrowKlassBaseField = type.getAddressField("_narrow_klass._base");
+    narrowKlassShiftField = type.getCIntegerField("_narrow_klass._shift");
   }
 
   public Universe() {
@@ -111,6 +115,19 @@ public class Universe {
     return (int)narrowOopShiftField.getValue();
   }
 
+  public static long getNarrowKlassBase() {
+    if (narrowKlassBaseField.getValue() == null) {
+      return 0;
+    } else {
+      return narrowKlassBaseField.getValue().minus(null);
+    }
+  }
+
+  public static int getNarrowKlassShift() {
+    return (int)narrowKlassShiftField.getValue();
+  }
+
+
   /** Returns "TRUE" iff "p" points into the allocated area of the heap. */
   public boolean isIn(Address p) {
     return heap().isIn(p);

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/Array.java

@@ -59,7 +59,7 @@ public class Array extends Oop {
     if (headerSize != 0) {
       return headerSize;
     }
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
       headerSize = typeSize;
     } else {
       headerSize = VM.getVM().alignUp(typeSize + VM.getVM().getIntSize(),
@@ -80,7 +80,7 @@ public class Array extends Oop {
     if (lengthOffsetInBytes != 0) {
       return lengthOffsetInBytes;
     }
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
       lengthOffsetInBytes = typeSize - VM.getVM().getIntSize();
     } else {
       lengthOffsetInBytes = typeSize;

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/Instance.java

@@ -53,7 +53,7 @@ public class Instance extends Oop {
 
   // Returns header size in bytes.
   public static long getHeaderSize() {
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
       return typeSize - VM.getVM().getIntSize();
     } else {
       return typeSize;

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/MetadataField.java

@@ -27,7 +27,6 @@ package sun.jvm.hotspot.oops;
 import sun.jvm.hotspot.runtime.VMObject;
 import sun.jvm.hotspot.debugger.*;
 
-// The class for an C int field simply provides access to the value.
 public class MetadataField extends Field {
 
   public MetadataField(sun.jvm.hotspot.types.AddressField vmField, long startOffset) {

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/NarrowKlassField.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2012, 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 sun.jvm.hotspot.oops;
+
+import sun.jvm.hotspot.debugger.*;
+
+public class NarrowKlassField extends MetadataField {
+
+  public NarrowKlassField(sun.jvm.hotspot.types.AddressField vmField, long startOffset) {
+    super(vmField, startOffset);
+  }
+
+  public Metadata getValue(Address addr) {
+    return Metadata.instantiateWrapperFor(addr.getCompKlassAddressAt(getOffset()));
+  }
+  public void setValue(Oop obj, long value) throws MutationException {
+    // Fix this: set* missing in Address
+  }
+}

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java

@@ -47,10 +47,7 @@ public class Oop {
     Type type  = db.lookupType("oopDesc");
     mark       = new CIntField(type.getCIntegerField("_mark"), 0);
     klass      = new MetadataField(type.getAddressField("_metadata._klass"), 0);
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    compressedKlass  = new NarrowKlassField(type.getAddressField("_metadata._compressed_klass"), 0);
-      // compressedKlass  = new CIntField(type.getCIntegerField("_metadata._compressed_klass"), 0);
-      throw new InternalError("unimplemented");
-    }
     headerSize = type.getSize();
   }
 
@@ -74,13 +71,13 @@ public class Oop {
 
   private static CIntField mark;
   private static MetadataField  klass;
-  private static CIntField compressedKlass;
+  private static NarrowKlassField compressedKlass;
 
   // Accessors for declared fields
   public Mark  getMark()   { return new Mark(getHandle()); }
   public Klass getKlass() {
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
-      throw new InternalError("unimplemented");
+      return (Klass)compressedKlass.getValue(getHandle());
     } else {
       return (Klass)klass.getValue(getHandle());
     }
@@ -150,7 +147,7 @@ public class Oop {
   void iterateFields(OopVisitor visitor, boolean doVMFields) {
     if (doVMFields) {
       visitor.doCInt(mark, true);
-      if (VM.getVM().isCompressedHeadersEnabled()) {
+      if (VM.getVM().isCompressedKlassPointersEnabled()) {
         throw new InternalError("unimplemented");
       } else {
         visitor.doMetadata(klass, true);
@@ -210,8 +207,8 @@ public class Oop {
     if (handle == null) {
       return null;
     }
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
-      throw new InternalError("Unimplemented");
+      return (Klass)Metadata.instantiateWrapperFor(handle.getCompKlassAddressAt(compressedKlass.getOffset()));
     } else {
       return (Klass)Metadata.instantiateWrapperFor(handle.getAddressAt(klass.getOffset()));
     }

hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/java_lang_Class.java

@@ -63,12 +63,8 @@ public class java_lang_Class {
 
   /** get Klass* field at offset hc_klass_offset from a java.lang.Class object */
   public static Klass asKlass(Oop aClass) {
-    if (VM.getVM().isCompressedHeadersEnabled()) {
-      throw new InternalError("unimplemented");
-    } else {
     return (Klass)Metadata.instantiateWrapperFor(aClass.getHandle().getAddressAt(klassOffset));
   }
-  }
 
   /** get oop_size field at offset oop_size_offset from a java.lang.Class object */
   public static long getOopSize(Oop aClass) {

hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java

@@ -103,6 +103,7 @@ public class VM {
   private int          logMinObjAlignmentInBytes;
   private int          heapWordSize;
   private int          heapOopSize;
+  private int          klassPtrSize;
   private int          oopSize;
   /** This is only present in a non-core build */
   private CodeCache    codeCache;
@@ -129,7 +130,7 @@ public class VM {
   private static CIntegerType boolType;
   private Boolean sharingEnabled;
   private Boolean compressedOopsEnabled;
-  private Boolean compressedHeadersEnabled;
+  private Boolean compressedKlassPointersEnabled;
 
   // command line flags supplied to VM - see struct Flag in globals.hpp
   public static final class Flag {
@@ -350,6 +351,12 @@ public class VM {
     } else {
       heapOopSize = (int)getOopSize();
     }
+
+    if (isCompressedKlassPointersEnabled()) {
+      klassPtrSize = (int)getIntSize();
+    } else {
+      klassPtrSize = (int)getOopSize(); // same as an oop
+    }
   }
 
   /** This could be used by a reflective runtime system */
@@ -374,8 +381,9 @@ public class VM {
       ((Observer) iter.next()).update(null, null);
     }
 
-    debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(),
+    debugger.putHeapConst(soleInstance.getHeapOopSize(), soleInstance.getKlassPtrSize(),
-                          Universe.getNarrowOopShift());
+                          Universe.getNarrowOopBase(), Universe.getNarrowOopShift(),
+                          Universe.getNarrowKlassBase(), Universe.getNarrowKlassShift());
   }
 
   /** This is used by the debugging system */
@@ -536,6 +544,10 @@ public class VM {
   public int getHeapOopSize() {
     return heapOopSize;
   }
+
+  public int getKlassPtrSize() {
+    return klassPtrSize;
+  }
   /** Utility routine for getting data structure alignment correct */
   public long alignUp(long size, long alignment) {
     return (size + alignment - 1) & ~(alignment - 1);
@@ -784,13 +796,13 @@ public class VM {
     return compressedOopsEnabled.booleanValue();
   }
 
-  public boolean isCompressedHeadersEnabled() {
+  public boolean isCompressedKlassPointersEnabled() {
-    if (compressedHeadersEnabled == null) {
+    if (compressedKlassPointersEnabled == null) {
-        Flag flag = getCommandLineFlag("UseCompressedHeaders");
+        Flag flag = getCommandLineFlag("UseCompressedKlassPointers");
-        compressedHeadersEnabled = (flag == null) ? Boolean.FALSE:
+        compressedKlassPointersEnabled = (flag == null) ? Boolean.FALSE:
              (flag.getBool()? Boolean.TRUE: Boolean.FALSE);
     }
-    return compressedHeadersEnabled.booleanValue();
+    return compressedKlassPointersEnabled.booleanValue();
   }
 
   public int getObjectAlignmentInBytes() {

hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java

@@ -53,9 +53,8 @@ public class RobustOopDeterminator {
   private static void initialize(TypeDataBase db) {
     Type type = db.lookupType("oopDesc");
 
-    if (VM.getVM().isCompressedHeadersEnabled()) {
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
-      // klassField = type.getNarrowOopField("_metadata._compressed_klass");
+      klassField = type.getAddressField("_metadata._compressed_klass");
-      throw new InternalError("unimplemented");
     } else {
       klassField = type.getAddressField("_metadata._klass");
     }
@@ -70,7 +69,11 @@ public class RobustOopDeterminator {
     }
     try {
       // Try to instantiate the Klass
+      if (VM.getVM().isCompressedKlassPointersEnabled()) {
+        Metadata.instantiateWrapperFor(oop.getCompKlassAddressAt(klassField.getOffset()));
+      } else {
         Metadata.instantiateWrapperFor(klassField.getValue(oop));
+      }
           return true;
         }
     catch (AddressException e) {

hotspot/make/bsd/makefiles/dtrace.make

@@ -114,21 +114,21 @@ $(GENOFFS): $(DTRACE_SRCDIR)/$(GENOFFS)Main.c lib$(GENOFFS).dylib
 
 # $@.tmp is created first to avoid an empty $(JVMOFFS).h if an error occurs.
 $(JVMOFFS).h: $(GENOFFS)
-	$(QUIETLY) DYLD_LIBRARY_PATH=. ./$(GENOFFS) -header > $@.tmp; touch $@; \
+	$(QUIETLY) DYLD_LIBRARY_PATH=.:$(DYLD_LIBRARY_PATH) ./$(GENOFFS) -header > $@.tmp; touch $@; \
 	if [ `diff $@.tmp $@ > /dev/null 2>&1; echo $$?` -ne 0 ] ; \
 	then rm -f $@; mv $@.tmp $@; \
 	else rm -f $@.tmp; \
 	fi
 
 $(JVMOFFS)Index.h: $(GENOFFS)
-	$(QUIETLY) DYLD_LIBRARY_PATH=. ./$(GENOFFS) -index > $@.tmp; touch $@; \
+	$(QUIETLY) DYLD_LIBRARY_PATH=.:$(DYLD_LIBRARY_PATH) ./$(GENOFFS) -index > $@.tmp; touch $@; \
 	if [ `diff $@.tmp $@ > /dev/null 2>&1; echo $$?` -ne 0 ] ; \
 	then rm -f $@; mv $@.tmp $@; \
 	else rm -f $@.tmp; \
 	fi
 
 $(JVMOFFS).cpp: $(GENOFFS) $(JVMOFFS).h $(JVMOFFS)Index.h
-	$(QUIETLY) DYLD_LIBRARY_PATH=. ./$(GENOFFS) -table > $@.tmp; touch $@; \
+	$(QUIETLY) DYLD_LIBRARY_PATH=.:$(DYLD_LIBRARY_PATH) ./$(GENOFFS) -table > $@.tmp; touch $@; \
 	if [ `diff $@.tmp $@ > /dev/null 2>&1; echo $$?` -ne 0 ] ; \
 	then rm -f $@; mv $@.tmp $@; \
 	else rm -f $@.tmp; \

hotspot/make/solaris/makefiles/dtrace.make

@@ -206,15 +206,15 @@ CONDITIONALLY_UPDATE_JVMOFFS_TARGET = \
 
 # $@.tmp is created first to avoid an empty $(JVMOFFS).h if an error occurs.
 $(JVMOFFS).h: $(GENOFFS)
-	$(QUIETLY) LD_LIBRARY_PATH=. ./$(GENOFFS) -header > $@.tmp
+	$(QUIETLY) LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ./$(GENOFFS) -header > $@.tmp
 	$(QUIETLY) $(CONDITIONALLY_UPDATE_JVMOFFS_TARGET)
 
 $(JVMOFFS)Index.h: $(GENOFFS)
-	$(QUIETLY) LD_LIBRARY_PATH=. ./$(GENOFFS) -index > $@.tmp
+	$(QUIETLY) LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ./$(GENOFFS) -index > $@.tmp
 	$(QUIETLY)  $(CONDITIONALLY_UPDATE_JVMOFFS_TARGET)
 
 $(JVMOFFS).cpp: $(GENOFFS) $(JVMOFFS).h $(JVMOFFS)Index.h
-	$(QUIETLY) LD_LIBRARY_PATH=. ./$(GENOFFS) -table > $@.tmp
+	$(QUIETLY) LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ./$(GENOFFS) -table > $@.tmp
 	$(QUIETLY) $(CONDITIONALLY_UPDATE_JVMOFFS_TARGET)
 
 $(JVMOFFS.o): $(JVMOFFS).h $(JVMOFFS).cpp 

hotspot/src/cpu/sparc/vm/assembler_sparc.cpp

@@ -1641,6 +1641,21 @@ void  MacroAssembler::set_narrow_oop(jobject obj, Register d) {
 
 }
 
+void  MacroAssembler::set_narrow_klass(Klass* k, Register d) {
+  assert(oop_recorder() != NULL, "this assembler needs an OopRecorder");
+  int klass_index = oop_recorder()->find_index(k);
+  RelocationHolder rspec = metadata_Relocation::spec(klass_index);
+  narrowOop encoded_k = oopDesc::encode_klass(k);
+
+  assert_not_delayed();
+  // Relocation with special format (see relocInfo_sparc.hpp).
+  relocate(rspec, 1);
+  // Assembler::sethi(encoded_k, d);
+  emit_long( op(branch_op) | rd(d) | op2(sethi_op2) | hi22(encoded_k) );
+  // Don't add relocation for 'add'. Do patching during 'sethi' processing.
+  add(d, low10(encoded_k), d);
+
+}
 
 void MacroAssembler::align(int modulus) {
   while (offset() % modulus != 0) nop();
@@ -4660,7 +4675,7 @@ void MacroAssembler::load_klass(Register src_oop, Register klass) {
   // if this changes, change that.
   if (UseCompressedKlassPointers) {
     lduw(src_oop, oopDesc::klass_offset_in_bytes(), klass);
-    decode_heap_oop_not_null(klass);
+    decode_klass_not_null(klass);
   } else {
     ld_ptr(src_oop, oopDesc::klass_offset_in_bytes(), klass);
   }
@@ -4669,7 +4684,7 @@ void MacroAssembler::load_klass(Register src_oop, Register klass) {
 void MacroAssembler::store_klass(Register klass, Register dst_oop) {
   if (UseCompressedKlassPointers) {
     assert(dst_oop != klass, "not enough registers");
-    encode_heap_oop_not_null(klass);
+    encode_klass_not_null(klass);
     st(klass, dst_oop, oopDesc::klass_offset_in_bytes());
   } else {
     st_ptr(klass, dst_oop, oopDesc::klass_offset_in_bytes());
@@ -4829,17 +4844,58 @@ void  MacroAssembler::decode_heap_oop_not_null(Register src, Register dst) {
   // pd_code_size_limit.
   // Also do not verify_oop as this is called by verify_oop.
   assert (UseCompressedOops, "must be compressed");
-  assert (Universe::heap() != NULL, "java heap should be initialized");
   assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong");
   sllx(src, LogMinObjAlignmentInBytes, dst);
   if (Universe::narrow_oop_base() != NULL)
     add(dst, G6_heapbase, dst);
 }
 
+void MacroAssembler::encode_klass_not_null(Register r) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  assert (UseCompressedKlassPointers, "must be compressed");
+  assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+  if (Universe::narrow_klass_base() != NULL)
+    sub(r, G6_heapbase, r);
+  srlx(r, LogKlassAlignmentInBytes, r);
+}
+
+void MacroAssembler::encode_klass_not_null(Register src, Register dst) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  assert (UseCompressedKlassPointers, "must be compressed");
+  assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+  if (Universe::narrow_klass_base() == NULL) {
+    srlx(src, LogKlassAlignmentInBytes, dst);
+  } else {
+    sub(src, G6_heapbase, dst);
+    srlx(dst, LogKlassAlignmentInBytes, dst);
+  }
+}
+
+void  MacroAssembler::decode_klass_not_null(Register r) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  // Do not add assert code to this unless you change vtableStubs_sparc.cpp
+  // pd_code_size_limit.
+  assert (UseCompressedKlassPointers, "must be compressed");
+  assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+  sllx(r, LogKlassAlignmentInBytes, r);
+  if (Universe::narrow_klass_base() != NULL)
+    add(r, G6_heapbase, r);
+}
+
+void  MacroAssembler::decode_klass_not_null(Register src, Register dst) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  // Do not add assert code to this unless you change vtableStubs_sparc.cpp
+  // pd_code_size_limit.
+  assert (UseCompressedKlassPointers, "must be compressed");
+  assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+  sllx(src, LogKlassAlignmentInBytes, dst);
+  if (Universe::narrow_klass_base() != NULL)
+    add(dst, G6_heapbase, dst);
+}
+
 void MacroAssembler::reinit_heapbase() {
-  if (UseCompressedOops) {
+  if (UseCompressedOops || UseCompressedKlassPointers) {
-    // call indirectly to solve generation ordering problem
+    AddressLiteral base(Universe::narrow_ptrs_base_addr());
-    AddressLiteral base(Universe::narrow_oop_base_addr());
     load_ptr_contents(base, G6_heapbase);
   }
 }

hotspot/src/cpu/sparc/vm/assembler_sparc.hpp

@@ -2280,6 +2280,11 @@ public:
   void encode_heap_oop_not_null(Register src, Register dst);
   void decode_heap_oop_not_null(Register src, Register dst);
 
+  void encode_klass_not_null(Register r);
+  void decode_klass_not_null(Register r);
+  void encode_klass_not_null(Register src, Register dst);
+  void decode_klass_not_null(Register src, Register dst);
+
   // Support for managing the JavaThread pointer (i.e.; the reference to
   // thread-local information).
   void get_thread();                                // load G2_thread
@@ -2409,6 +2414,7 @@ public:
   inline void    set_metadata             (const AddressLiteral& obj_addr, Register d); // same as load_address
 
   void set_narrow_oop( jobject obj, Register d );
+  void set_narrow_klass( Klass* k, Register d );
 
   // nop padding
   void align(int modulus);

hotspot/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp

@@ -105,6 +105,11 @@ bool LIR_Assembler::is_single_instruction(LIR_Op* op) {
         if (src->is_address() && !src->is_stack() && (src->type() == T_OBJECT || src->type() == T_ARRAY)) return false;
       }
 
+      if (UseCompressedKlassPointers) {
+        if (src->is_address() && !src->is_stack() && src->type() == T_ADDRESS &&
+            src->as_address_ptr()->disp() == oopDesc::klass_offset_in_bytes()) return false;
+      }
+
       if (dst->is_register()) {
         if (src->is_address() && Assembler::is_simm13(src->as_address_ptr()->disp())) {
           return !PatchALot;
@@ -969,8 +974,18 @@ int LIR_Assembler::load(Register base, int offset, LIR_Opr to_reg, BasicType typ
 #endif
         }
         break;
-      case T_METADATA:
+      case T_METADATA:  __ ld_ptr(base, offset, to_reg->as_register()); break;
-      case T_ADDRESS:  __ ld_ptr(base, offset, to_reg->as_register()); break;
+      case T_ADDRESS:
+#ifdef _LP64
+        if (offset == oopDesc::klass_offset_in_bytes() && UseCompressedKlassPointers) {
+          __ lduw(base, offset, to_reg->as_register());
+          __ decode_klass_not_null(to_reg->as_register());
+        } else
+#endif
+        {
+          __ ld_ptr(base, offset, to_reg->as_register());
+        }
+        break;
       case T_ARRAY : // fall through
       case T_OBJECT:
         {
@@ -2344,7 +2359,7 @@ void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
     if (UseCompressedKlassPointers) {
       // tmp holds the default type. It currently comes uncompressed after the
       // load of a constant, so encode it.
-      __ encode_heap_oop(tmp);
+      __ encode_klass_not_null(tmp);
       // load the raw value of the dst klass, since we will be comparing
       // uncompressed values directly.
       __ lduw(dst, oopDesc::klass_offset_in_bytes(), tmp2);

hotspot/src/cpu/sparc/vm/c1_MacroAssembler_sparc.cpp

@@ -189,7 +189,7 @@ void C1_MacroAssembler::initialize_header(Register obj, Register klass, Register
   if (UseCompressedKlassPointers) {
     // Save klass
     mov(klass, t1);
-    encode_heap_oop_not_null(t1);
+    encode_klass_not_null(t1);
     stw(t1, obj, oopDesc::klass_offset_in_bytes());
   } else {
     st_ptr(klass, obj, oopDesc::klass_offset_in_bytes());

hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp

@@ -208,8 +208,6 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
   Register O1_scratch    = O1;
   Register O4_param_size = O4;   // size of parameters
 
-  address code_start = __ pc();
-
   // here's where control starts out:
   __ align(CodeEntryAlignment);
   address entry_point = __ pc();
@@ -252,22 +250,9 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
   // O4_first_arg_addr is live!
 
   if (TraceMethodHandles) {
-    const char* name = vmIntrinsics::name_at(iid);
-    if (*name == '_')  name += 1;
-    const size_t len = strlen(name) + 50;
-    char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);
-    const char* suffix = "";
-    if (vmIntrinsics::method_for(iid) == NULL ||
-        !vmIntrinsics::method_for(iid)->access_flags().is_public()) {
-      if (is_signature_polymorphic_static(iid))
-        suffix = "/static";
-      else
-        suffix = "/private";
-    }
-    jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);
     if (O0_mh != noreg)
       __ mov(O0_mh, G3_method_handle);  // make stub happy
-    trace_method_handle(_masm, qname);
+    trace_method_handle_interpreter_entry(_masm, iid);
   }
 
   if (iid == vmIntrinsics::_invokeBasic) {
@@ -287,14 +272,6 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
     generate_method_handle_dispatch(_masm, iid, O0_recv, G5_member, not_for_compiler_entry);
   }
 
-  if (PrintMethodHandleStubs) {
-    address code_end = __ pc();
-    tty->print_cr("--------");
-    tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid));
-    Disassembler::decode(code_start, code_end);
-    tty->cr();
-  }
-
   return entry_point;
 }
 

hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp

@@ -58,5 +58,3 @@ public:
                                   Register recv, Register method_temp,
                                   Register temp2, Register temp3,
                                   bool for_compiler_entry);
-
-  static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;

hotspot/src/cpu/sparc/vm/relocInfo_sparc.cpp

@@ -97,8 +97,8 @@ void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
     jint inst2;
     guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
     if (format() != 0) {
-      assert(type() == relocInfo::oop_type, "only narrow oops case");
+      assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, "only narrow oops or klasses case");
-      jint np = oopDesc::encode_heap_oop((oop)x);
+      jint np = type() == relocInfo::oop_type ? oopDesc::encode_heap_oop((oop)x) : oopDesc::encode_klass((Klass*)x);
       inst &= ~Assembler::hi22(-1);
       inst |=  Assembler::hi22((intptr_t)np);
       if (verify_only) {

hotspot/src/cpu/sparc/vm/sparc.ad

@@ -557,9 +557,9 @@ int MachCallDynamicJavaNode::ret_addr_offset() {
     int entry_offset = InstanceKlass::vtable_start_offset() + vtable_index*vtableEntry::size();
     int v_off = entry_offset*wordSize + vtableEntry::method_offset_in_bytes();
     int klass_load_size;
-    if (UseCompressedOops && UseCompressedKlassPointers) {
+    if (UseCompressedKlassPointers) {
       assert(Universe::heap() != NULL, "java heap should be initialized");
-      if (Universe::narrow_oop_base() == NULL)
+      if (Universe::narrow_klass_base() == NULL)
         klass_load_size = 2*BytesPerInstWord; // see MacroAssembler::load_klass()
       else
         klass_load_size = 3*BytesPerInstWord;
@@ -1707,11 +1707,11 @@ uint reloc_java_to_interp() {
 void MachUEPNode::format( PhaseRegAlloc *ra_, outputStream *st ) const {
   st->print_cr("\nUEP:");
 #ifdef    _LP64
-  if (UseCompressedOops) {
+  if (UseCompressedKlassPointers) {
     assert(Universe::heap() != NULL, "java heap should be initialized");
     st->print_cr("\tLDUW   [R_O0 + oopDesc::klass_offset_in_bytes],R_G5\t! Inline cache check - compressed klass");
     st->print_cr("\tSLL    R_G5,3,R_G5");
-    if (Universe::narrow_oop_base() != NULL)
+    if (Universe::narrow_klass_base() != NULL)
       st->print_cr("\tADD    R_G5,R_G6_heap_base,R_G5");
   } else {
     st->print_cr("\tLDX    [R_O0 + oopDesc::klass_offset_in_bytes],R_G5\t! Inline cache check");
@@ -1942,6 +1942,12 @@ bool Matcher::narrow_oop_use_complex_address() {
   return false;
 }
 
+bool Matcher::narrow_klass_use_complex_address() {
+  NOT_LP64(ShouldNotCallThis());
+  assert(UseCompressedKlassPointers, "only for compressed klass code");
+  return false;
+}
+
 // Is it better to copy float constants, or load them directly from memory?
 // Intel can load a float constant from a direct address, requiring no
 // extra registers.  Most RISCs will have to materialize an address into a
@@ -2602,9 +2608,9 @@ encode %{
       int off = __ offset();
       __ load_klass(O0, G3_scratch);
       int klass_load_size;
-      if (UseCompressedOops && UseCompressedKlassPointers) {
+      if (UseCompressedKlassPointers) {
         assert(Universe::heap() != NULL, "java heap should be initialized");
-        if (Universe::narrow_oop_base() == NULL)
+        if (Universe::narrow_klass_base() == NULL)
           klass_load_size = 2*BytesPerInstWord;
         else
           klass_load_size = 3*BytesPerInstWord;
@@ -3610,6 +3616,15 @@ operand immN()
   interface(CONST_INTER);
 %}
 
+operand immNKlass()
+%{
+  match(ConNKlass);
+
+  op_cost(10);
+  format %{ %}
+  interface(CONST_INTER);
+%}
+
 // NULL Pointer Immediate
 operand immN0()
 %{
@@ -5870,8 +5885,8 @@ instruct loadI2L_immI(iRegL dst, memory mem, immI mask, iRegL tmp) %{
 %}
 
 // Load Unsigned Integer into a Long Register
-instruct loadUI2L(iRegL dst, memory mem) %{
+instruct loadUI2L(iRegL dst, memory mem, immL_32bits mask) %{
-  match(Set dst (LoadUI2L mem));
+  match(Set dst (AndL (ConvI2L (LoadI mem)) mask));
   ins_cost(MEMORY_REF_COST);
 
   size(4);
@@ -6159,6 +6174,17 @@ instruct loadConN(iRegN dst, immN src) %{
   ins_pipe(ialu_hi_lo_reg);
 %}
 
+instruct loadConNKlass(iRegN dst, immNKlass src) %{
+  match(Set dst src);
+  ins_cost(DEFAULT_COST * 3/2);
+  format %{ "SET    $src,$dst\t! compressed klass ptr" %}
+  ins_encode %{
+    Register dst = $dst$$Register;
+    __ set_narrow_klass((Klass*)$src$$constant, dst);
+  %}
+  ins_pipe(ialu_hi_lo_reg);
+%}
+
 // Materialize long value (predicated by immL_cheap).
 instruct loadConL_set64(iRegL dst, immL_cheap con, o7RegL tmp) %{
   match(Set dst con);
@@ -6475,6 +6501,25 @@ instruct storeN(memory dst, iRegN src) %{
    ins_pipe(istore_mem_spORreg);
 %}
 
+instruct storeNKlass(memory dst, iRegN src) %{
+   match(Set dst (StoreNKlass dst src));
+   ins_cost(MEMORY_REF_COST);
+   size(4);
+
+   format %{ "STW    $src,$dst\t! compressed klass ptr" %}
+   ins_encode %{
+     Register base = as_Register($dst$$base);
+     Register index = as_Register($dst$$index);
+     Register src = $src$$Register;
+     if (index != G0) {
+       __ stw(src, base, index);
+     } else {
+       __ stw(src, base, $dst$$disp);
+     }
+   %}
+   ins_pipe(istore_mem_spORreg);
+%}
+
 instruct storeN0(memory dst, immN0 src) %{
    match(Set dst (StoreN dst src));
    ins_cost(MEMORY_REF_COST);
@@ -6582,6 +6627,23 @@ instruct decodeHeapOop_not_null(iRegP dst, iRegN src) %{
   ins_pipe(ialu_reg);
 %}
 
+instruct encodeKlass_not_null(iRegN dst, iRegP src) %{
+  match(Set dst (EncodePKlass src));
+  format %{ "encode_klass_not_null $src, $dst" %}
+  ins_encode %{
+    __ encode_klass_not_null($src$$Register, $dst$$Register);
+  %}
+  ins_pipe(ialu_reg);
+%}
+
+instruct decodeKlass_not_null(iRegP dst, iRegN src) %{
+  match(Set dst (DecodeNKlass src));
+  format %{ "decode_klass_not_null $src, $dst" %}
+  ins_encode %{
+    __ decode_klass_not_null($src$$Register, $dst$$Register);
+  %}
+  ins_pipe(ialu_reg);
+%}
 
 //----------MemBar Instructions-----------------------------------------------
 // Memory barrier flavors

hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp

@@ -117,6 +117,7 @@ void VM_Version::initialize() {
     // 32-bit oops don't make sense for the 64-bit VM on sparc
     // since the 32-bit VM has the same registers and smaller objects.
     Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
+    Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes);
 #endif // _LP64
 #ifdef COMPILER2
     // Indirect branch is the same cost as direct

hotspot/src/cpu/sparc/vm/vtableStubs_sparc.cpp

@@ -220,13 +220,13 @@ int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
       const int basic = 5*BytesPerInstWord +
                         // shift;add for load_klass (only shift with zero heap based)
                         (UseCompressedKlassPointers ?
-                         ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
+                         ((Universe::narrow_klass_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
       return basic + slop;
     } else {
       const int basic = (28 LP64_ONLY(+ 6)) * BytesPerInstWord +
                         // shift;add for load_klass (only shift with zero heap based)
                         (UseCompressedKlassPointers ?
-                         ((Universe::narrow_oop_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
+                         ((Universe::narrow_klass_base() == NULL) ? BytesPerInstWord : 2*BytesPerInstWord) : 0);
       return (basic + slop);
     }
   }

hotspot/src/cpu/x86/vm/assembler_x86.cpp

@@ -6916,7 +6916,7 @@ void MacroAssembler::call_VM_base(Register oop_result,
 #ifdef ASSERT
   // TraceBytecodes does not use r12 but saves it over the call, so don't verify
   // r12 is the heapbase.
-  LP64_ONLY(if (UseCompressedOops && !TraceBytecodes) verify_heapbase("call_VM_base");)
+  LP64_ONLY(if ((UseCompressedOops || UseCompressedKlassPointers) && !TraceBytecodes) verify_heapbase("call_VM_base: heap base corrupted?");)
 #endif // ASSERT
 
   assert(java_thread != oop_result  , "cannot use the same register for java_thread & oop_result");
@@ -10016,7 +10016,7 @@ void MacroAssembler::load_klass(Register dst, Register src) {
 #ifdef _LP64
   if (UseCompressedKlassPointers) {
     movl(dst, Address(src, oopDesc::klass_offset_in_bytes()));
-    decode_heap_oop_not_null(dst);
+    decode_klass_not_null(dst);
   } else
 #endif
     movptr(dst, Address(src, oopDesc::klass_offset_in_bytes()));
@@ -10027,15 +10027,10 @@ void MacroAssembler::load_prototype_header(Register dst, Register src) {
   if (UseCompressedKlassPointers) {
     assert (Universe::heap() != NULL, "java heap should be initialized");
     movl(dst, Address(src, oopDesc::klass_offset_in_bytes()));
-    if (Universe::narrow_oop_shift() != 0) {
+    if (Universe::narrow_klass_shift() != 0) {
-      assert(LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong");
+      assert(LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
-      if (LogMinObjAlignmentInBytes == Address::times_8) {
+      assert(LogKlassAlignmentInBytes == Address::times_8, "klass not aligned on 64bits?");
       movq(dst, Address(r12_heapbase, dst, Address::times_8, Klass::prototype_header_offset()));
-      } else {
-        // OK to use shift since we don't need to preserve flags.
-        shlq(dst, LogMinObjAlignmentInBytes);
-        movq(dst, Address(r12_heapbase, dst, Address::times_1, Klass::prototype_header_offset()));
-      }
     } else {
       movq(dst, Address(dst, Klass::prototype_header_offset()));
     }
@@ -10050,7 +10045,7 @@ void MacroAssembler::load_prototype_header(Register dst, Register src) {
 void MacroAssembler::store_klass(Register dst, Register src) {
 #ifdef _LP64
   if (UseCompressedKlassPointers) {
-    encode_heap_oop_not_null(src);
+    encode_klass_not_null(src);
     movl(Address(dst, oopDesc::klass_offset_in_bytes()), src);
   } else
 #endif
@@ -10132,12 +10127,12 @@ void MacroAssembler::store_klass_gap(Register dst, Register src) {
 
 #ifdef ASSERT
 void MacroAssembler::verify_heapbase(const char* msg) {
-  assert (UseCompressedOops, "should be compressed");
+  assert (UseCompressedOops || UseCompressedKlassPointers, "should be compressed");
   assert (Universe::heap() != NULL, "java heap should be initialized");
   if (CheckCompressedOops) {
     Label ok;
     push(rscratch1); // cmpptr trashes rscratch1
-    cmpptr(r12_heapbase, ExternalAddress((address)Universe::narrow_oop_base_addr()));
+    cmpptr(r12_heapbase, ExternalAddress((address)Universe::narrow_ptrs_base_addr()));
     jcc(Assembler::equal, ok);
     STOP(msg);
     bind(ok);
@@ -10275,6 +10270,74 @@ void  MacroAssembler::decode_heap_oop_not_null(Register dst, Register src) {
   }
 }
 
+void MacroAssembler::encode_klass_not_null(Register r) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+#ifdef ASSERT
+  verify_heapbase("MacroAssembler::encode_klass_not_null: heap base corrupted?");
+#endif
+  if (Universe::narrow_klass_base() != NULL) {
+    subq(r, r12_heapbase);
+  }
+  if (Universe::narrow_klass_shift() != 0) {
+    assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+    shrq(r, LogKlassAlignmentInBytes);
+  }
+}
+
+void MacroAssembler::encode_klass_not_null(Register dst, Register src) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+#ifdef ASSERT
+  verify_heapbase("MacroAssembler::encode_klass_not_null2: heap base corrupted?");
+#endif
+  if (dst != src) {
+    movq(dst, src);
+  }
+  if (Universe::narrow_klass_base() != NULL) {
+    subq(dst, r12_heapbase);
+  }
+  if (Universe::narrow_klass_shift() != 0) {
+    assert (LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+    shrq(dst, LogKlassAlignmentInBytes);
+  }
+}
+
+void  MacroAssembler::decode_klass_not_null(Register r) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  // Note: it will change flags
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  // Cannot assert, unverified entry point counts instructions (see .ad file)
+  // vtableStubs also counts instructions in pd_code_size_limit.
+  // Also do not verify_oop as this is called by verify_oop.
+  if (Universe::narrow_klass_shift() != 0) {
+    assert(LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+    shlq(r, LogKlassAlignmentInBytes);
+    if (Universe::narrow_klass_base() != NULL) {
+      addq(r, r12_heapbase);
+    }
+  } else {
+    assert (Universe::narrow_klass_base() == NULL, "sanity");
+  }
+}
+
+void  MacroAssembler::decode_klass_not_null(Register dst, Register src) {
+  assert(Metaspace::is_initialized(), "metaspace should be initialized");
+  // Note: it will change flags
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  // Cannot assert, unverified entry point counts instructions (see .ad file)
+  // vtableStubs also counts instructions in pd_code_size_limit.
+  // Also do not verify_oop as this is called by verify_oop.
+  if (Universe::narrow_klass_shift() != 0) {
+    assert(LogKlassAlignmentInBytes == Universe::narrow_klass_shift(), "decode alg wrong");
+    assert(LogKlassAlignmentInBytes == Address::times_8, "klass not aligned on 64bits?");
+    leaq(dst, Address(r12_heapbase, src, Address::times_8, 0));
+  } else {
+    assert (Universe::narrow_klass_base() == NULL, "sanity");
+    if (dst != src) {
+      movq(dst, src);
+    }
+  }
+}
+
 void  MacroAssembler::set_narrow_oop(Register dst, jobject obj) {
   assert (UseCompressedOops, "should only be used for compressed headers");
   assert (Universe::heap() != NULL, "java heap should be initialized");
@@ -10293,6 +10356,22 @@ void  MacroAssembler::set_narrow_oop(Address dst, jobject obj) {
   mov_narrow_oop(dst, oop_index, rspec);
 }
 
+void  MacroAssembler::set_narrow_klass(Register dst, Klass* k) {
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
+  int klass_index = oop_recorder()->find_index(k);
+  RelocationHolder rspec = metadata_Relocation::spec(klass_index);
+  mov_narrow_oop(dst, oopDesc::encode_klass(k), rspec);
+}
+
+void  MacroAssembler::set_narrow_klass(Address dst, Klass* k) {
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
+  int klass_index = oop_recorder()->find_index(k);
+  RelocationHolder rspec = metadata_Relocation::spec(klass_index);
+  mov_narrow_oop(dst, oopDesc::encode_klass(k), rspec);
+}
+
 void  MacroAssembler::cmp_narrow_oop(Register dst, jobject obj) {
   assert (UseCompressedOops, "should only be used for compressed headers");
   assert (Universe::heap() != NULL, "java heap should be initialized");
@@ -10311,9 +10390,25 @@ void  MacroAssembler::cmp_narrow_oop(Address dst, jobject obj) {
   Assembler::cmp_narrow_oop(dst, oop_index, rspec);
 }
 
+void  MacroAssembler::cmp_narrow_klass(Register dst, Klass* k) {
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
+  int klass_index = oop_recorder()->find_index(k);
+  RelocationHolder rspec = metadata_Relocation::spec(klass_index);
+  Assembler::cmp_narrow_oop(dst, oopDesc::encode_klass(k), rspec);
+}
+
+void  MacroAssembler::cmp_narrow_klass(Address dst, Klass* k) {
+  assert (UseCompressedKlassPointers, "should only be used for compressed headers");
+  assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
+  int klass_index = oop_recorder()->find_index(k);
+  RelocationHolder rspec = metadata_Relocation::spec(klass_index);
+  Assembler::cmp_narrow_oop(dst, oopDesc::encode_klass(k), rspec);
+}
+
 void MacroAssembler::reinit_heapbase() {
-  if (UseCompressedOops) {
+  if (UseCompressedOops || UseCompressedKlassPointers) {
-    movptr(r12_heapbase, ExternalAddress((address)Universe::narrow_oop_base_addr()));
+    movptr(r12_heapbase, ExternalAddress((address)Universe::narrow_ptrs_base_addr()));
   }
 }
 #endif // _LP64

hotspot/src/cpu/x86/vm/assembler_x86.hpp

@@ -2083,6 +2083,15 @@ class MacroAssembler: public Assembler {
   void cmp_narrow_oop(Register dst, jobject obj);
   void cmp_narrow_oop(Address dst, jobject obj);
 
+  void encode_klass_not_null(Register r);
+  void decode_klass_not_null(Register r);
+  void encode_klass_not_null(Register dst, Register src);
+  void decode_klass_not_null(Register dst, Register src);
+  void set_narrow_klass(Register dst, Klass* k);
+  void set_narrow_klass(Address dst, Klass* k);
+  void cmp_narrow_klass(Register dst, Klass* k);
+  void cmp_narrow_klass(Address dst, Klass* k);
+
   // if heap base register is used - reinit it with the correct value
   void reinit_heapbase();
 

hotspot/src/cpu/x86/vm/c1_FrameMap_x86.hpp

@@ -148,7 +148,7 @@
 
   static int adjust_reg_range(int range) {
     // Reduce the number of available regs (to free r12) in case of compressed oops
-    if (UseCompressedOops) return range - 1;
+    if (UseCompressedOops || UseCompressedKlassPointers) return range - 1;
     return range;
   }
 

hotspot/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp

@@ -340,7 +340,7 @@ int LIR_Assembler::check_icache() {
   Register receiver = FrameMap::receiver_opr->as_register();
   Register ic_klass = IC_Klass;
   const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9);
-  const bool do_post_padding = VerifyOops || UseCompressedOops;
+  const bool do_post_padding = VerifyOops || UseCompressedKlassPointers;
   if (!do_post_padding) {
     // insert some nops so that the verified entry point is aligned on CodeEntryAlignment
     while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) {
@@ -1262,7 +1262,11 @@ void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_Patch
       break;
 
     case T_ADDRESS:
+      if (UseCompressedKlassPointers && addr->disp() == oopDesc::klass_offset_in_bytes()) {
+        __ movl(dest->as_register(), from_addr);
+      } else {
         __ movptr(dest->as_register(), from_addr);
+      }
       break;
     case T_INT:
       __ movl(dest->as_register(), from_addr);
@@ -1364,6 +1368,12 @@ void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_Patch
     }
 #endif
     __ verify_oop(dest->as_register());
+  } else if (type == T_ADDRESS && addr->disp() == oopDesc::klass_offset_in_bytes()) {
+#ifdef _LP64
+    if (UseCompressedKlassPointers) {
+      __ decode_klass_not_null(dest->as_register());
+    }
+#endif
   }
 }
 
@@ -1705,7 +1715,7 @@ void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, L
   } else if (obj == klass_RInfo) {
     klass_RInfo = dst;
   }
-  if (k->is_loaded() && !UseCompressedOops) {
+  if (k->is_loaded() && !UseCompressedKlassPointers) {
     select_different_registers(obj, dst, k_RInfo, klass_RInfo);
   } else {
     Rtmp1 = op->tmp3()->as_register();
@@ -3446,7 +3456,7 @@ void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
     __ mov_metadata(tmp, default_type->constant_encoding());
 #ifdef _LP64
     if (UseCompressedKlassPointers) {
-      __ encode_heap_oop(tmp);
+      __ encode_klass_not_null(tmp);
     }
 #endif
 

hotspot/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp

@@ -1166,7 +1166,7 @@ void LIRGenerator::do_CheckCast(CheckCast* x) {
   }
   LIR_Opr reg = rlock_result(x);
   LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
-  if (!x->klass()->is_loaded() || UseCompressedOops) {
+  if (!x->klass()->is_loaded() || UseCompressedKlassPointers) {
     tmp3 = new_register(objectType);
   }
   __ checkcast(reg, obj.result(), x->klass(),
@@ -1188,7 +1188,7 @@ void LIRGenerator::do_InstanceOf(InstanceOf* x) {
   }
   obj.load_item();
   LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
-  if (!x->klass()->is_loaded() || UseCompressedOops) {
+  if (!x->klass()->is_loaded() || UseCompressedKlassPointers) {
     tmp3 = new_register(objectType);
   }
   __ instanceof(reg, obj.result(), x->klass(),

hotspot/src/cpu/x86/vm/c1_MacroAssembler_x86.cpp

@@ -159,7 +159,7 @@ void C1_MacroAssembler::initialize_header(Register obj, Register klass, Register
 #ifdef _LP64
   if (UseCompressedKlassPointers) { // Take care not to kill klass
     movptr(t1, klass);
-    encode_heap_oop_not_null(t1);
+    encode_klass_not_null(t1);
     movl(Address(obj, oopDesc::klass_offset_in_bytes()), t1);
   } else
 #endif

hotspot/src/cpu/x86/vm/methodHandles_x86.cpp

@@ -209,8 +209,6 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
   Register rcx_mh     = rcx;   // MH receiver; dies quickly and is recycled
   Register rbx_method = rbx;   // eventual target of this invocation
 
-  address code_start = __ pc();
-
   // here's where control starts out:
   __ align(CodeEntryAlignment);
   address entry_point = __ pc();
@@ -251,23 +249,7 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
 
   // rdx_first_arg_addr is live!
 
-  if (TraceMethodHandles) {
+  trace_method_handle_interpreter_entry(_masm, iid);
-    const char* name = vmIntrinsics::name_at(iid);
-    if (*name == '_')  name += 1;
-    const size_t len = strlen(name) + 50;
-    char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal);
-    const char* suffix = "";
-    if (vmIntrinsics::method_for(iid) == NULL ||
-        !vmIntrinsics::method_for(iid)->access_flags().is_public()) {
-      if (is_signature_polymorphic_static(iid))
-        suffix = "/static";
-      else
-        suffix = "/private";
-    }
-    jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix);
-    // note: stub look for mh in rcx
-    trace_method_handle(_masm, qname);
-  }
 
   if (iid == vmIntrinsics::_invokeBasic) {
     generate_method_handle_dispatch(_masm, iid, rcx_mh, noreg, not_for_compiler_entry);
@@ -287,14 +269,6 @@ address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler*
     generate_method_handle_dispatch(_masm, iid, rcx_recv, rbx_member, not_for_compiler_entry);
   }
 
-  if (PrintMethodHandleStubs) {
-    address code_end = __ pc();
-    tty->print_cr("--------");
-    tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid));
-    Disassembler::decode(code_start, code_end);
-    tty->cr();
-  }
-
   return entry_point;
 }
 

hotspot/src/cpu/x86/vm/methodHandles_x86.hpp

@@ -55,8 +55,6 @@ public:
                                   Register temp2,
                                   bool for_compiler_entry);
 
-  static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
-
   static Register saved_last_sp_register() {
     // Should be in sharedRuntime, not here.
     return LP64_ONLY(r13) NOT_LP64(rsi);

hotspot/src/cpu/x86/vm/vtableStubs_x86_64.cpp

@@ -212,11 +212,11 @@ int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
   if (is_vtable_stub) {
     // Vtable stub size
     return (DebugVtables ? 512 : 24) + (CountCompiledCalls ? 13 : 0) +
-           (UseCompressedOops ? 16 : 0);  // 1 leaq can be 3 bytes + 1 long
+           (UseCompressedKlassPointers ? 16 : 0);  // 1 leaq can be 3 bytes + 1 long
   } else {
     // Itable stub size
     return (DebugVtables ? 512 : 74) + (CountCompiledCalls ? 13 : 0) +
-           (UseCompressedOops ? 32 : 0);  // 2 leaqs
+           (UseCompressedKlassPointers ? 32 : 0);  // 2 leaqs
   }
   // In order to tune these parameters, run the JVM with VM options
   // +PrintMiscellaneous and +WizardMode to see information about

hotspot/src/cpu/x86/vm/x86_32.ad

@@ -1424,6 +1424,11 @@ bool Matcher::narrow_oop_use_complex_address() {
   return true;
 }
 
+bool Matcher::narrow_klass_use_complex_address() {
+  ShouldNotCallThis();
+  return true;
+}
+
 
 // Is it better to copy float constants, or load them directly from memory?
 // Intel can load a float constant from a direct address, requiring no
@@ -1553,9 +1558,6 @@ const RegMask Matcher::method_handle_invoke_SP_save_mask() {
 // Returns true if the high 32 bits of the value is known to be zero.
 bool is_operand_hi32_zero(Node* n) {
   int opc = n->Opcode();
-  if (opc == Op_LoadUI2L) {
-    return true;
-  }
   if (opc == Op_AndL) {
     Node* o2 = n->in(2);
     if (o2->is_Con() && (o2->get_long() & 0xFFFFFFFF00000000LL) == 0LL) {
@@ -6147,8 +6149,8 @@ instruct loadI2L_immI(eRegL dst, memory mem, immI mask, eFlagsReg cr) %{
 %}
 
 // Load Unsigned Integer into Long Register
-instruct loadUI2L(eRegL dst, memory mem, eFlagsReg cr) %{
+instruct loadUI2L(eRegL dst, memory mem, immL_32bits mask, eFlagsReg cr) %{
-  match(Set dst (LoadUI2L mem));
+  match(Set dst (AndL (ConvI2L (LoadI mem)) mask));
   effect(KILL cr);
 
   ins_cost(250);

hotspot/src/cpu/x86/vm/x86_64.ad

@@ -1409,10 +1409,10 @@ uint reloc_java_to_interp()
 #ifndef PRODUCT
 void MachUEPNode::format(PhaseRegAlloc* ra_, outputStream* st) const
 {
-  if (UseCompressedOops) {
+  if (UseCompressedKlassPointers) {
     st->print_cr("movl    rscratch1, [j_rarg0 + oopDesc::klass_offset_in_bytes()]\t# compressed klass");
-    if (Universe::narrow_oop_shift() != 0) {
+    if (Universe::narrow_klass_shift() != 0) {
-      st->print_cr("\tdecode_heap_oop_not_null rscratch1, rscratch1");
+      st->print_cr("\tdecode_klass_not_null rscratch1, rscratch1");
     }
     st->print_cr("\tcmpq    rax, rscratch1\t # Inline cache check");
   } else {
@@ -1428,7 +1428,7 @@ void MachUEPNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const
 {
   MacroAssembler masm(&cbuf);
   uint insts_size = cbuf.insts_size();
-  if (UseCompressedOops) {
+  if (UseCompressedKlassPointers) {
     masm.load_klass(rscratch1, j_rarg0);
     masm.cmpptr(rax, rscratch1);
   } else {
@@ -1576,6 +1576,11 @@ bool Matcher::narrow_oop_use_complex_address() {
   return (LogMinObjAlignmentInBytes <= 3);
 }
 
+bool Matcher::narrow_klass_use_complex_address() {
+  assert(UseCompressedKlassPointers, "only for compressed klass code");
+  return (LogKlassAlignmentInBytes <= 3);
+}
+
 // Is it better to copy float constants, or load them directly from
 // memory?  Intel can load a float constant from a direct address,
 // requiring no extra registers.  Most RISCs will have to materialize
@@ -3139,6 +3144,14 @@ operand immN() %{
   interface(CONST_INTER);
 %}
 
+operand immNKlass() %{
+  match(ConNKlass);
+
+  op_cost(10);
+  format %{ %}
+  interface(CONST_INTER);
+%}
+
 // NULL Pointer Immediate
 operand immN0() %{
   predicate(n->get_narrowcon() == 0);
@@ -4038,6 +4051,145 @@ operand indPosIndexScaleOffsetNarrow(rRegN reg, immL32 off, rRegI idx, immI2 sca
   %}
 %}
 
+operand indirectNarrowKlass(rRegN reg)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(DecodeNKlass reg);
+
+  format %{ "[$reg]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index(0x4);
+    scale(0x0);
+    disp(0x0);
+  %}
+%}
+
+operand indOffset8NarrowKlass(rRegN reg, immL8 off)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (DecodeNKlass reg) off);
+
+  format %{ "[$reg + $off (8-bit)]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index(0x4);
+    scale(0x0);
+    disp($off);
+  %}
+%}
+
+operand indOffset32NarrowKlass(rRegN reg, immL32 off)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (DecodeNKlass reg) off);
+
+  format %{ "[$reg + $off (32-bit)]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index(0x4);
+    scale(0x0);
+    disp($off);
+  %}
+%}
+
+operand indIndexOffsetNarrowKlass(rRegN reg, rRegL lreg, immL32 off)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (AddP (DecodeNKlass reg) lreg) off);
+
+  op_cost(10);
+  format %{"[$reg + $off + $lreg]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index($lreg);
+    scale(0x0);
+    disp($off);
+  %}
+%}
+
+operand indIndexNarrowKlass(rRegN reg, rRegL lreg)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (DecodeNKlass reg) lreg);
+
+  op_cost(10);
+  format %{"[$reg + $lreg]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index($lreg);
+    scale(0x0);
+    disp(0x0);
+  %}
+%}
+
+operand indIndexScaleNarrowKlass(rRegN reg, rRegL lreg, immI2 scale)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (DecodeNKlass reg) (LShiftL lreg scale));
+
+  op_cost(10);
+  format %{"[$reg + $lreg << $scale]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index($lreg);
+    scale($scale);
+    disp(0x0);
+  %}
+%}
+
+operand indIndexScaleOffsetNarrowKlass(rRegN reg, immL32 off, rRegL lreg, immI2 scale)
+%{
+  predicate(Universe::narrow_klass_shift() == 0);
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (AddP (DecodeNKlass reg) (LShiftL lreg scale)) off);
+
+  op_cost(10);
+  format %{"[$reg + $off + $lreg << $scale]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index($lreg);
+    scale($scale);
+    disp($off);
+  %}
+%}
+
+operand indCompressedKlassOffset(rRegN reg, immL32 off) %{
+  predicate(UseCompressedKlassPointers && (Universe::narrow_klass_shift() == Address::times_8));
+  constraint(ALLOC_IN_RC(ptr_reg));
+  match(AddP (DecodeNKlass reg) off);
+
+  op_cost(10);
+  format %{"[R12 + $reg << 3 + $off] (compressed klass addressing)" %}
+  interface(MEMORY_INTER) %{
+    base(0xc); // R12
+    index($reg);
+    scale(0x3);
+    disp($off);
+  %}
+%}
+
+operand indPosIndexScaleOffsetNarrowKlass(rRegN reg, immL32 off, rRegI idx, immI2 scale)
+%{
+  constraint(ALLOC_IN_RC(ptr_reg));
+  predicate(Universe::narrow_klass_shift() == 0 && n->in(2)->in(3)->in(1)->as_Type()->type()->is_long()->_lo >= 0);
+  match(AddP (AddP (DecodeNKlass reg) (LShiftL (ConvI2L idx) scale)) off);
+
+  op_cost(10);
+  format %{"[$reg + $off + $idx << $scale]" %}
+  interface(MEMORY_INTER) %{
+    base($reg);
+    index($idx);
+    scale($scale);
+    disp($off);
+  %}
+%}
 
 //----------Special Memory Operands--------------------------------------------
 // Stack Slot Operand - This operand is used for loading and storing temporary
@@ -4209,7 +4361,11 @@ opclass memory(indirect, indOffset8, indOffset32, indIndexOffset, indIndex,
                indCompressedOopOffset,
                indirectNarrow, indOffset8Narrow, indOffset32Narrow,
                indIndexOffsetNarrow, indIndexNarrow, indIndexScaleNarrow,
-               indIndexScaleOffsetNarrow, indPosIndexScaleOffsetNarrow);
+               indIndexScaleOffsetNarrow, indPosIndexScaleOffsetNarrow,
+               indCompressedKlassOffset,
+               indirectNarrowKlass, indOffset8NarrowKlass, indOffset32NarrowKlass,
+               indIndexOffsetNarrowKlass, indIndexNarrowKlass, indIndexScaleNarrowKlass,
+               indIndexScaleOffsetNarrowKlass, indPosIndexScaleOffsetNarrowKlass);
 
 //----------PIPELINE-----------------------------------------------------------
 // Rules which define the behavior of the target architectures pipeline.
@@ -5044,9 +5200,9 @@ instruct loadI2L_immI(rRegL dst, memory mem, immI mask, rFlagsReg cr) %{
 %}
 
 // Load Unsigned Integer into Long Register
-instruct loadUI2L(rRegL dst, memory mem)
+instruct loadUI2L(rRegL dst, memory mem, immL_32bits mask) 
 %{
-  match(Set dst (LoadUI2L mem));
+  match(Set dst (AndL (ConvI2L (LoadI mem)) mask));
 
   ins_cost(125);
   format %{ "movl    $dst, $mem\t# uint -> long" %}
@@ -5469,6 +5625,22 @@ instruct loadConN(rRegN dst, immN src) %{
   ins_pipe(ialu_reg_fat); // XXX
 %}
 
+instruct loadConNKlass(rRegN dst, immNKlass src) %{
+  match(Set dst src);
+
+  ins_cost(125);
+  format %{ "movl    $dst, $src\t# compressed klass ptr" %}
+  ins_encode %{
+    address con = (address)$src$$constant;
+    if (con == NULL) {
+      ShouldNotReachHere();
+    } else {
+      __ set_narrow_klass($dst$$Register, (Klass*)$src$$constant);
+    }
+  %}
+  ins_pipe(ialu_reg_fat); // XXX
+%}
+
 instruct loadConF0(regF dst, immF0 src)
 %{
   match(Set dst src);
@@ -5738,7 +5910,7 @@ instruct storeP(memory mem, any_RegP src)
 
 instruct storeImmP0(memory mem, immP0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreP mem zero));
 
   ins_cost(125); // XXX
@@ -5774,9 +5946,21 @@ instruct storeN(memory mem, rRegN src)
   ins_pipe(ialu_mem_reg);
 %}
 
+instruct storeNKlass(memory mem, rRegN src)
+%{
+  match(Set mem (StoreNKlass mem src));
+
+  ins_cost(125); // XXX
+  format %{ "movl    $mem, $src\t# compressed klass ptr" %}
+  ins_encode %{
+    __ movl($mem$$Address, $src$$Register);
+  %}
+  ins_pipe(ialu_mem_reg);
+%}
+
 instruct storeImmN0(memory mem, immN0 zero)
 %{
-  predicate(Universe::narrow_oop_base() == NULL);
+  predicate(Universe::narrow_oop_base() == NULL && Universe::narrow_klass_base() == NULL);
   match(Set mem (StoreN mem zero));
 
   ins_cost(125); // XXX
@@ -5804,10 +5988,22 @@ instruct storeImmN(memory mem, immN src)
   ins_pipe(ialu_mem_imm);
 %}
 
+instruct storeImmNKlass(memory mem, immNKlass src)
+%{
+  match(Set mem (StoreNKlass mem src));
+
+  ins_cost(150); // XXX
+  format %{ "movl    $mem, $src\t# compressed klass ptr" %}
+  ins_encode %{
+    __ set_narrow_klass($mem$$Address, (Klass*)$src$$constant);
+  %}
+  ins_pipe(ialu_mem_imm);
+%}
+
 // Store Integer Immediate
 instruct storeImmI0(memory mem, immI0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreI mem zero));
 
   ins_cost(125); // XXX
@@ -5832,7 +6028,7 @@ instruct storeImmI(memory mem, immI src)
 // Store Long Immediate
 instruct storeImmL0(memory mem, immL0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreL mem zero));
 
   ins_cost(125); // XXX
@@ -5857,7 +6053,7 @@ instruct storeImmL(memory mem, immL32 src)
 // Store Short/Char Immediate
 instruct storeImmC0(memory mem, immI0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreC mem zero));
 
   ins_cost(125); // XXX
@@ -5883,7 +6079,7 @@ instruct storeImmI16(memory mem, immI16 src)
 // Store Byte Immediate
 instruct storeImmB0(memory mem, immI0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreB mem zero));
 
   ins_cost(125); // XXX
@@ -5908,7 +6104,7 @@ instruct storeImmB(memory mem, immI8 src)
 // Store CMS card-mark Immediate
 instruct storeImmCM0_reg(memory mem, immI0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreCM mem zero));
 
   ins_cost(125); // XXX
@@ -5946,7 +6142,7 @@ instruct storeF(memory mem, regF src)
 // Store immediate Float value (it is faster than store from XMM register)
 instruct storeF0(memory mem, immF0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreF mem zero));
 
   ins_cost(25); // XXX
@@ -5996,7 +6192,7 @@ instruct storeD0_imm(memory mem, immD0 src)
 
 instruct storeD0(memory mem, immD0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set mem (StoreD mem zero));
 
   ins_cost(25); // XXX
@@ -6482,6 +6678,32 @@ instruct decodeHeapOop_not_null(rRegP dst, rRegN src, rFlagsReg cr) %{
   ins_pipe(ialu_reg_long);
 %}
 
+instruct encodeKlass_not_null(rRegN dst, rRegP src, rFlagsReg cr) %{
+  match(Set dst (EncodePKlass src));
+  effect(KILL cr);
+  format %{ "encode_heap_oop_not_null $dst,$src" %}
+  ins_encode %{
+    __ encode_klass_not_null($dst$$Register, $src$$Register);
+  %}
+  ins_pipe(ialu_reg_long);
+%}
+
+instruct decodeKlass_not_null(rRegP dst, rRegN src, rFlagsReg cr) %{
+  match(Set dst (DecodeNKlass src));
+  effect(KILL cr);
+  format %{ "decode_heap_oop_not_null $dst,$src" %}
+  ins_encode %{
+    Register s = $src$$Register;
+    Register d = $dst$$Register;
+    if (s != d) {
+      __ decode_klass_not_null(d, s);
+    } else {
+      __ decode_klass_not_null(d);
+    }
+  %}
+  ins_pipe(ialu_reg_long);
+%}
+
 
 //----------Conditional Move---------------------------------------------------
 // Jump
@@ -10452,7 +10674,7 @@ instruct testP_mem(rFlagsReg cr, memory op, immP0 zero)
 
 instruct testP_mem_reg0(rFlagsReg cr, memory mem, immP0 zero)
 %{
-  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL));
+  predicate(UseCompressedOops && (Universe::narrow_oop_base() == NULL) && (Universe::narrow_klass_base() == NULL));
   match(Set cr (CmpP (LoadP mem) zero));
 
   format %{ "cmpq    R12, $mem\t# ptr (R12_heapbase==0)" %}
@@ -10503,6 +10725,27 @@ instruct compN_mem_imm(rFlagsRegU cr, memory mem, immN src)
   ins_pipe(ialu_cr_reg_mem);
 %}
 
+instruct compN_rReg_imm_klass(rFlagsRegU cr, rRegN op1, immNKlass op2) %{
+  match(Set cr (CmpN op1 op2));
+
+  format %{ "cmpl    $op1, $op2\t# compressed klass ptr" %}
+  ins_encode %{
+    __ cmp_narrow_klass($op1$$Register, (Klass*)$op2$$constant);
+  %}
+  ins_pipe(ialu_cr_reg_imm);
+%}
+
+instruct compN_mem_imm_klass(rFlagsRegU cr, memory mem, immNKlass src)
+%{
+  match(Set cr (CmpN src (LoadNKlass mem)));
+
+  format %{ "cmpl    $mem, $src\t# compressed klass ptr" %}
+  ins_encode %{
+    __ cmp_narrow_klass($mem$$Address, (Klass*)$src$$constant);
+  %}
+  ins_pipe(ialu_cr_reg_mem);
+%}
+
 instruct testN_reg(rFlagsReg cr, rRegN src, immN0 zero) %{
   match(Set cr (CmpN src zero));
 
@@ -10526,7 +10769,7 @@ instruct testN_mem(rFlagsReg cr, memory mem, immN0 zero)
 
 instruct testN_mem_reg0(rFlagsReg cr, memory mem, immN0 zero)
 %{
-  predicate(Universe::narrow_oop_base() == NULL);
+  predicate(Universe::narrow_oop_base() == NULL && (Universe::narrow_klass_base() == NULL));
   match(Set cr (CmpN (LoadN mem) zero));
 
   format %{ "cmpl    R12, $mem\t# compressed ptr (R12_heapbase==0)" %}

hotspot/src/os/bsd/dtrace/generateJvmOffsets.cpp

@@ -267,8 +267,8 @@ int generateJvmOffsets(GEN_variant gen_variant) {
 
   printf("\n");
 
-  GEN_OFFS(NarrowOopStruct, _base);
+  GEN_OFFS(NarrowPtrStruct, _base);
-  GEN_OFFS(NarrowOopStruct, _shift);
+  GEN_OFFS(NarrowPtrStruct, _shift);
   printf("\n");
 
   GEN_VALUE(SIZE_HeapBlockHeader, (int) sizeof(HeapBlock::Header));

hotspot/src/os/bsd/dtrace/jhelper.d

@@ -45,10 +45,6 @@ extern pointer __JvmOffsets;
 
 extern pointer __1cJCodeCacheF_heap_;
 extern pointer __1cIUniverseO_collectedHeap_;
-extern pointer __1cIUniverseL_narrow_oop_;
-#ifdef _LP64
-extern pointer UseCompressedOops;
-#endif
 
 extern pointer __1cHnmethodG__vtbl_;
 extern pointer __1cNMethodG__vtbl_;
@@ -136,8 +132,8 @@ dtrace:helper:ustack:
   copyin_offset(SIZE_oopDesc);
   copyin_offset(SIZE_ConstantPool);
 
-  copyin_offset(OFFSET_NarrowOopStruct_base);
+  copyin_offset(OFFSET_NarrowPtrStruct_base);
-  copyin_offset(OFFSET_NarrowOopStruct_shift);
+  copyin_offset(OFFSET_NarrowPtrStruct_shift);
 
   /*
    * The PC to translate is in arg0.
@@ -159,17 +155,6 @@ dtrace:helper:ustack:
   this->CodeCache_heap_address = copyin_ptr(&``__1cJCodeCacheF_heap_);
 
   /* Reading volatile values */
-#ifdef _LP64
-  this->Use_Compressed_Oops  = copyin_uint8(&``UseCompressedOops);
-#else
-  this->Use_Compressed_Oops  = 0;
-#endif
-
-  this->Universe_narrow_oop_base  = copyin_ptr(&``__1cIUniverseL_narrow_oop_ +
-                                               OFFSET_NarrowOopStruct_base);
-  this->Universe_narrow_oop_shift = copyin_int32(&``__1cIUniverseL_narrow_oop_ +
-                                                 OFFSET_NarrowOopStruct_shift);
-
   this->CodeCache_low = copyin_ptr(this->CodeCache_heap_address + 
       OFFSET_CodeHeap_memory + OFFSET_VirtualSpace_low);
 

hotspot/src/os/linux/vm/vmError_linux.cpp

@@ -44,7 +44,7 @@ void VMError::show_message_box(char *buf, int buflen) {
     jio_snprintf(p, buflen - len,
                "\n\n"
                "Do you want to debug the problem?\n\n"
-               "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " INTX_FORMAT " (" INTPTR_FORMAT ")\n"
+               "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n"
                "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"
                "Otherwise, press RETURN to abort...",
                os::current_process_id(), os::current_process_id(),

hotspot/src/os/solaris/dtrace/generateJvmOffsets.cpp

@@ -262,8 +262,8 @@ int generateJvmOffsets(GEN_variant gen_variant) {
 
   printf("\n");
 
-  GEN_OFFS(NarrowOopStruct, _base);
+  GEN_OFFS(NarrowPtrStruct, _base);
-  GEN_OFFS(NarrowOopStruct, _shift);
+  GEN_OFFS(NarrowPtrStruct, _shift);
   printf("\n");
 
   GEN_VALUE(SIZE_HeapBlockHeader, sizeof(HeapBlock::Header));

hotspot/src/os/solaris/dtrace/jhelper.d

@@ -45,10 +45,6 @@ extern pointer __JvmOffsets;
 
 extern pointer __1cJCodeCacheF_heap_;
 extern pointer __1cIUniverseO_collectedHeap_;
-extern pointer __1cIUniverseL_narrow_oop_;
-#ifdef _LP64
-extern pointer UseCompressedOops;
-#endif
 
 extern pointer __1cHnmethodG__vtbl_;
 extern pointer __1cGMethodG__vtbl_;
@@ -136,8 +132,8 @@ dtrace:helper:ustack:
   copyin_offset(SIZE_oopDesc);
   copyin_offset(SIZE_ConstantPool);
 
-  copyin_offset(OFFSET_NarrowOopStruct_base);
+  copyin_offset(OFFSET_NarrowPtrStruct_base);
-  copyin_offset(OFFSET_NarrowOopStruct_shift);
+  copyin_offset(OFFSET_NarrowPtrStruct_shift);
 
   /*
    * The PC to translate is in arg0.
@@ -158,18 +154,6 @@ dtrace:helper:ustack:
 
   this->CodeCache_heap_address = copyin_ptr(&``__1cJCodeCacheF_heap_);
 
-  /* Reading volatile values */
-#ifdef _LP64
-  this->Use_Compressed_Oops  = copyin_uint8(&``UseCompressedOops);
-#else
-  this->Use_Compressed_Oops  = 0;
-#endif
-
-  this->Universe_narrow_oop_base  = copyin_ptr(&``__1cIUniverseL_narrow_oop_ +
-                                               OFFSET_NarrowOopStruct_base);
-  this->Universe_narrow_oop_shift = copyin_int32(&``__1cIUniverseL_narrow_oop_ +
-                                                 OFFSET_NarrowOopStruct_shift);
-
   this->CodeCache_low = copyin_ptr(this->CodeCache_heap_address + 
       OFFSET_CodeHeap_memory + OFFSET_VirtualSpace_low);
 

hotspot/src/share/vm/adlc/adlparse.cpp

@@ -1392,7 +1392,7 @@ void ADLParser::pipe_parse(void) {
       _AD.addForm(machnode);
     }
     else if (!strcmp(ident, "attributes")) {
-      bool vsi_seen = false, bhds_seen = false;
+      bool vsi_seen = false;
 
       skipws();
       if ( (_curchar != '%')
@@ -1436,7 +1436,6 @@ void ADLParser::pipe_parse(void) {
           }
 
           pipeline->_branchHasDelaySlot = true;
-          bhds_seen = true;
           continue;
         }
 
@@ -1639,6 +1638,12 @@ void ADLParser::resource_parse(PipelineForm &pipeline) {
     next_char();                   // Skip "(" or ","
     ident = get_ident();           // Grab next identifier
 
+    if (_AD._adl_debug > 1) {
+      if (ident != NULL) {
+        fprintf(stderr, "resource_parse: identifier: %s\n", ident);
+      }
+    }
+
     if (ident == NULL) {
       parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
       return;
@@ -2427,7 +2432,6 @@ InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, in
   int        lparen = 0;          // keep track of parenthesis nesting depth
   int        rparen = 0;          // position of instruction at this depth
   InstructForm *inst_seen  = NULL;
-  InstructForm *child_seen = NULL;
 
   // Walk the match tree,
   // Record <parent, position, instruction name, input position>
@@ -2437,7 +2441,7 @@ InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, in
     if (_curchar == '(') {
       ++lparen;
       next_char();
-      child_seen = peep_match_child_parse(match, parent, position, rparen);
+      ( void ) peep_match_child_parse(match, parent, position, rparen);
     }
     // Right paren signals end of an input, may be more
     else if (_curchar == ')') {
@@ -3154,6 +3158,9 @@ void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) {
 
 
 //------------------------------size_parse-----------------------------------
+// Parse a 'size(<expr>)' attribute which specifies the size of the
+// emitted instructions in bytes. <expr> can be a C++ expression,
+// e.g. a constant.
 char* ADLParser::size_parse(InstructForm *instr) {
   char* sizeOfInstr = NULL;
 
@@ -4274,7 +4281,17 @@ char *ADLParser::get_ident_common(bool do_preproc) {
             || ((c >= '0') && (c <= '9'))
             || ((c == '_')) || ((c == ':')) || ((c == '#')) );
   if (start == end) {             // We popped out on the first try
-    parse_err(SYNERR, "identifier expected at %c\n", c);
+    // It can occur that `start' contains the rest of the input file.
+    // In this case the output should be truncated.
+    if (strlen(start) > 24) {
+      char buf[32];
+      strncpy(buf, start, 20);
+      buf[20] = '\0';
+      strcat(buf, "[...]");
+      parse_err(SYNERR, "Identifier expected, but found '%s'.", buf);
+    } else {
+      parse_err(SYNERR, "Identifier expected, but found '%s'.", start);
+    }
     start = NULL;
   }
   else {

hotspot/src/share/vm/adlc/archDesc.cpp

@@ -221,6 +221,7 @@ ArchDesc::ArchDesc()
       _register = NULL;
       _encode = NULL;
       _pipeline = NULL;
+      _frame = NULL;
 }
 
 ArchDesc::~ArchDesc() {
@@ -648,7 +649,10 @@ int  ArchDesc::instructFormCount() {
 // Return the textual binding for a given CPP flag name.
 // Return NULL if there is no binding, or it has been #undef-ed.
 char* ArchDesc::get_preproc_def(const char* flag) {
-  SourceForm* deff = (SourceForm*) _preproc_table[flag];
+  // In case of syntax errors, flag may take the value NULL.
+  SourceForm* deff = NULL;
+  if (flag != NULL)
+    deff = (SourceForm*) _preproc_table[flag];
   return (deff == NULL) ? NULL : deff->_code;
 }
 
@@ -803,7 +807,9 @@ int ArchDesc::emit_msg(int quiet, int flag, int line, const char *fmt,
     while (i++ <= 15)  fputc(' ', errfile);
     fprintf(errfile, "%-8s:", pref);
     vfprintf(errfile, fmt, args);
-    fprintf(errfile, "\n"); }
+    fprintf(errfile, "\n");
+    fflush(errfile);
+  }
   return 1;
 }
 
@@ -855,8 +861,14 @@ const char *ArchDesc::reg_mask(OperandForm  &opForm) {
 
   // Check constraints on result's register class
   const char *result_class = opForm.constrained_reg_class();
-  if (!result_class) opForm.dump();
+  if (result_class == NULL) {
-  assert( result_class, "Resulting register class was not defined for operand");
+    opForm.dump();
+    syntax_err(opForm._linenum,
+               "Use of an undefined result class for operand: %s",
+               opForm._ident);
+    abort();
+  }
+
   regMask = reg_class_to_reg_mask( result_class );
 
   return regMask;
@@ -865,8 +877,14 @@ const char *ArchDesc::reg_mask(OperandForm  &opForm) {
 // Obtain the name of the RegMask for an InstructForm
 const char *ArchDesc::reg_mask(InstructForm &inForm) {
   const char *result = inForm.reduce_result();
-  assert( result,
+
-          "Did not find result operand or RegMask for this instruction");
+  if (result == NULL) {
+    syntax_err(inForm._linenum,
+               "Did not find result operand or RegMask"
+               " for this instruction: %s",
+               inForm._ident);
+    abort();
+  }
 
   // Instructions producing 'Universe' use RegMask::Empty
   if( strcmp(result,"Universe")==0 ) {
@@ -875,10 +893,17 @@ const char *ArchDesc::reg_mask(InstructForm &inForm) {
 
   // Lookup this result operand and get its register class
   Form *form = (Form*)_globalNames[result];
-  assert( form, "Result operand must be defined");
+  if (form == NULL) {
+    syntax_err(inForm._linenum,
+               "Did not find result operand for result: %s", result);
+    abort();
+  }
   OperandForm *oper = form->is_operand();
-  if (oper == NULL) form->dump();
+  if (oper == NULL) {
-  assert( oper, "Result must be an OperandForm");
+    syntax_err(inForm._linenum, "Form is not an OperandForm:");
+    form->dump();
+    abort();
+  }
   return reg_mask( *oper );
 }
 
@@ -887,7 +912,13 @@ const char *ArchDesc::reg_mask(InstructForm &inForm) {
 char *ArchDesc::stack_or_reg_mask(OperandForm  &opForm) {
   // name of cisc_spillable version
   const char *reg_mask_name = reg_mask(opForm);
-  assert( reg_mask_name != NULL, "called with incorrect opForm");
+
+  if (reg_mask_name == NULL) {
+     syntax_err(opForm._linenum,
+                "Did not find reg_mask for opForm: %s",
+                opForm._ident);
+     abort();
+  }
 
   const char *stack_or = "STACK_OR_";
   int   length         = (int)strlen(stack_or) + (int)strlen(reg_mask_name) + 1;
@@ -968,7 +999,8 @@ void ArchDesc::initBaseOpTypes() {
   // Create InstructForm and assign type for each ideal instruction.
   for ( int j = _last_machine_leaf+1; j < _last_opcode; ++j) {
     char         *ident    = (char *)NodeClassNames[j];
-    if(!strcmp(ident, "ConI") || !strcmp(ident, "ConP") || !strcmp(ident, "ConN") ||
+    if(!strcmp(ident, "ConI") || !strcmp(ident, "ConP") ||
+       !strcmp(ident, "ConN") || !strcmp(ident, "ConNKlass") ||
        !strcmp(ident, "ConF") || !strcmp(ident, "ConD") ||
        !strcmp(ident, "ConL") || !strcmp(ident, "Con" ) ||
        !strcmp(ident, "Bool") ) {

hotspot/src/share/vm/adlc/archDesc.hpp

@@ -369,9 +369,10 @@ protected:
   FILE       *_cpp;
   FormDict   &_globals;
   ArchDesc   &_AD;
+  const char *_name;
 public:
-  OutputMap (FILE *decl_file, FILE *def_file, FormDict &globals, ArchDesc &AD)
+  OutputMap (FILE *decl_file, FILE *def_file, FormDict &globals, ArchDesc &AD, const char *name)
-    : _hpp(decl_file), _cpp(def_file), _globals(globals), _AD(AD) {};
+    : _hpp(decl_file), _cpp(def_file), _globals(globals), _AD(AD), _name(name) {};
   // Access files used by this routine
   FILE        *decl_file() { return _hpp; }
   FILE        *def_file()  { return _cpp; }

hotspot/src/share/vm/adlc/dict2.cpp

@@ -33,7 +33,7 @@
 // String hash tables
 #define MAXID 20
 static char initflag = 0;       // True after 1st initialization
-static char shft[MAXID] = {1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6};
+static char shft[MAXID + 1] = {1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7};
 static short xsum[MAXID];
 
 //------------------------------bucket---------------------------------------

hotspot/src/share/vm/adlc/filebuff.hpp

@@ -31,10 +31,14 @@
 using namespace std;
 
 // STRUCTURE FOR HANDLING INPUT AND OUTPUT FILES
-typedef struct {
+
+class BufferedFile {
+ public:
   const char *_name;
   FILE *_fp;
-} BufferedFile;
+  inline BufferedFile() { _name = NULL; _fp = NULL; };
+  inline ~BufferedFile() {};
+};
 
 class ArchDesc;
 

hotspot/src/share/vm/adlc/forms.cpp

@@ -215,6 +215,7 @@ Form::DataType Form::ideal_to_const_type(const char *name) const {
   if (strcmp(name,"ConI")==0) return Form::idealI;
   if (strcmp(name,"ConP")==0) return Form::idealP;
   if (strcmp(name,"ConN")==0) return Form::idealN;
+  if (strcmp(name,"ConNKlass")==0) return Form::idealNKlass;
   if (strcmp(name,"ConL")==0) return Form::idealL;
   if (strcmp(name,"ConF")==0) return Form::idealF;
   if (strcmp(name,"ConD")==0) return Form::idealD;
@@ -255,9 +256,8 @@ Form::DataType Form::is_load_from_memory(const char *opType) const {
   if( strcmp(opType,"LoadD_unaligned")==0 )  return Form::idealD;
   if( strcmp(opType,"LoadF")==0 )  return Form::idealF;
   if( strcmp(opType,"LoadI")==0 )  return Form::idealI;
-  if( strcmp(opType,"LoadUI2L")==0 )  return Form::idealI;
   if( strcmp(opType,"LoadKlass")==0 )  return Form::idealP;
-  if( strcmp(opType,"LoadNKlass")==0 ) return Form::idealN;
+  if( strcmp(opType,"LoadNKlass")==0 ) return Form::idealNKlass;
   if( strcmp(opType,"LoadL")==0 )  return Form::idealL;
   if( strcmp(opType,"LoadL_unaligned")==0 )  return Form::idealL;
   if( strcmp(opType,"LoadPLocked")==0 )  return Form::idealP;
@@ -280,6 +280,7 @@ Form::DataType Form::is_store_to_memory(const char *opType) const {
   if( strcmp(opType,"StoreL")==0)  return Form::idealL;
   if( strcmp(opType,"StoreP")==0)  return Form::idealP;
   if( strcmp(opType,"StoreN")==0)  return Form::idealN;
+  if( strcmp(opType,"StoreNKlass")==0)  return Form::idealNKlass;
   if( strcmp(opType,"StoreVector")==0 )  return Form::idealV;
   assert( strcmp(opType,"Store") != 0, "Must type Stores" );
   return Form::none;

hotspot/src/share/vm/adlc/forms.hpp

@@ -173,7 +173,8 @@ public:
     idealC      =  7,  // Char    type
     idealS      =  8,  // String  type
     idealN      =  9,  // Narrow oop types
-    idealV      = 10   // Vector  type
+    idealNKlass = 10,  // Narrow klass types
+    idealV      = 11   // Vector  type
   };
   // Convert ideal name to a DataType, return DataType::none if not a 'ConX'
   Form::DataType  ideal_to_const_type(const char *ideal_type_name) const;
@@ -448,11 +449,11 @@ public:
   // Return number of USEs + number of DEFs
   int        num_operands();
   // Return zero-based position in list;  -1 if not in list.
-  int        operand_position(const char *name, int usedef);
+  int        operand_position(const char *name, int usedef, Form *fm);
   // Find position for this name, regardless of use/def information
   int        operand_position(const char *name);
   // Find position for this name when looked up for output via "format"
-  int        operand_position_format(const char *name);
+  int        operand_position_format(const char *name, Form *fm);
   // Find position for the Label when looked up for output via "format"
   int        label_position();
   // Find position for the Method when looked up for output via "format"

hotspot/src/share/vm/adlc/formssel.cpp

@@ -567,7 +567,7 @@ bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) {
         if( strcmp(rc_name,"stack_slots") ) {
           // Check for ideal_type of RegFlags
           const char *type = opform->ideal_type( globals, registers );
-          if( !strcmp(type,"RegFlags") )
+          if( (type != NULL) && !strcmp(type, "RegFlags") )
             rematerialize = true;
         } else
           rematerialize = false; // Do not rematerialize things target stk
@@ -750,6 +750,8 @@ bool InstructForm::captures_bottom_type(FormDict &globals) const {
         !strcmp(_matrule->_rChild->_opType,"CastX2P")      ||  // new result type
         !strcmp(_matrule->_rChild->_opType,"DecodeN")      ||
         !strcmp(_matrule->_rChild->_opType,"EncodeP")      ||
+        !strcmp(_matrule->_rChild->_opType,"DecodeNKlass") ||
+        !strcmp(_matrule->_rChild->_opType,"EncodePKlass") ||
         !strcmp(_matrule->_rChild->_opType,"LoadN")        ||
         !strcmp(_matrule->_rChild->_opType,"GetAndSetN")   ||
         !strcmp(_matrule->_rChild->_opType,"LoadNKlass")   ||
@@ -793,6 +795,20 @@ uint InstructForm::num_opnds() {
   return num_opnds;
 }
 
+const char *InstructForm::opnd_ident(int idx) {
+  return _components.at(idx)->_name;
+}
+
+const char *InstructForm::unique_opnd_ident(int idx) {
+  uint i;
+  for (i = 1; i < num_opnds(); ++i) {
+    if (unique_opnds_idx(i) == idx) {
+      break;
+    }
+  }
+  return (_components.at(i) != NULL) ? _components.at(i)->_name : "";
+}
+
 // Return count of unmatched operands.
 uint InstructForm::num_post_match_opnds() {
   uint  num_post_match_opnds = _components.count();
@@ -864,6 +880,9 @@ uint InstructForm::oper_input_base(FormDict &globals) {
   return base;
 }
 
+// This function determines the order of the MachOper in _opnds[]
+// by writing the operand names into the _components list.
+//
 // Implementation does not modify state of internal structures
 void InstructForm::build_components() {
   // Add top-level operands to the components
@@ -959,11 +978,11 @@ void InstructForm::build_components() {
 
 // Return zero-based position in component list;  -1 if not in list.
 int   InstructForm::operand_position(const char *name, int usedef) {
-  return unique_opnds_idx(_components.operand_position(name, usedef));
+  return unique_opnds_idx(_components.operand_position(name, usedef, this));
 }
 
 int   InstructForm::operand_position_format(const char *name) {
-  return unique_opnds_idx(_components.operand_position_format(name));
+  return unique_opnds_idx(_components.operand_position_format(name, this));
 }
 
 // Return zero-based position in component list; -1 if not in list.
@@ -1223,7 +1242,7 @@ bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch
     if (different) {
       globalAD->syntax_err(short_branch->_linenum, "Instruction %s and its short form %s have different parameters\n", _ident, short_branch->_ident);
     }
-    if (AD._short_branch_debug) {
+    if (AD._adl_debug > 1 || AD._short_branch_debug) {
       fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident);
     }
     _short_branch_form = short_branch;
@@ -1255,16 +1274,19 @@ void InstructForm::rep_var_format(FILE *fp, const char *rep_var) {
   // Find replacement variable's type
   const Form *form   = _localNames[rep_var];
   if (form == NULL) {
-    fprintf(stderr, "unknown replacement variable in format statement: '%s'\n", rep_var);
+    globalAD->syntax_err(_linenum, "Unknown replacement variable %s in format statement of %s.",
-    assert(false, "ShouldNotReachHere()");
+                         rep_var, _ident);
+    return;
   }
   OpClassForm *opc   = form->is_opclass();
   assert( opc, "replacement variable was not found in local names");
   // Lookup the index position of the replacement variable
   int idx  = operand_position_format(rep_var);
   if ( idx == -1 ) {
-    assert( strcmp(opc->_ident,"label")==0, "Unimplemented");
+    globalAD->syntax_err(_linenum, "Could not find replacement variable %s in format statement of %s.\n",
-    assert( false, "ShouldNotReachHere()");
+                         rep_var, _ident);
+    assert(strcmp(opc->_ident, "label") == 0, "Unimplemented");
+    return;
   }
 
   if (is_noninput_operand(idx)) {
@@ -1273,7 +1295,7 @@ void InstructForm::rep_var_format(FILE *fp, const char *rep_var) {
     OperandForm* oper = form->is_operand();
     if (oper != NULL && oper->is_bound_register()) {
       const RegDef* first = oper->get_RegClass()->find_first_elem();
-      fprintf(fp, "    tty->print(\"%s\");\n", first->_regname);
+      fprintf(fp, "    st->print(\"%s\");\n", first->_regname);
     } else {
       globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var);
     }
@@ -1373,17 +1395,19 @@ void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix,
   if ( cur_num_opnds >= 1 ) {
     fprintf(fp,"  // Start at oper_input_base() and count operands\n");
     fprintf(fp,"  unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals));
-    fprintf(fp,"    unsigned %sidx1 = %d;\n", prefix, oper_input_base(globals));
+    fprintf(fp,"  unsigned %sidx1 = %d;", prefix, oper_input_base(globals));
+    fprintf(fp," \t// %s\n", unique_opnd_ident(1));
 
     // Generate starting points for other unique operands if they exist
     for ( idx = 2; idx < num_unique_opnds(); ++idx ) {
       if( *receiver == 0 ) {
-        fprintf(fp,"    unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();\n",
+        fprintf(fp,"  unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();",
                 prefix, idx, prefix, idx-1, idx-1 );
       } else {
-        fprintf(fp,"    unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();\n",
+        fprintf(fp,"  unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();",
                 prefix, idx, prefix, idx-1, receiver, idx-1 );
       }
+      fprintf(fp," \t// %s\n", unique_opnd_ident(idx));
     }
   }
   if( *receiver != 0 ) {
@@ -1774,9 +1798,25 @@ static int effect_lookup(const char *name) {
   return Component::INVALID;
 }
 
+const char *Component::getUsedefName() {
+  switch (_usedef) {
+    case Component::INVALID:  return "INVALID";  break;
+    case Component::USE:      return "USE";      break;
+    case Component::USE_DEF:  return "USE_DEF";  break;
+    case Component::USE_KILL: return "USE_KILL"; break;
+    case Component::KILL:     return "KILL";     break;
+    case Component::TEMP:     return "TEMP";     break;
+    case Component::DEF:      return "DEF";      break;
+    case Component::CALL:     return "CALL";     break;
+    default: assert(false, "unknown effect");
+  }
+  return "Undefined Use/Def info";
+}
+
 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) {
   _ftype = Form::EFF;
 }
+
 Effect::~Effect() {
 }
 
@@ -2273,7 +2313,7 @@ void OperandForm::build_components() {
 }
 
 int OperandForm::operand_position(const char *name, int usedef) {
-  return _components.operand_position(name, usedef);
+  return _components.operand_position(name, usedef, this);
 }
 
 
@@ -2399,20 +2439,20 @@ void  OperandForm::int_format(FILE *fp, FormDict &globals, uint index) {
   if (_matrule && (_matrule->is_base_register(globals) ||
                    strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
     // !!!!! !!!!!
-    fprintf(fp,    "{ char reg_str[128];\n");
+    fprintf(fp,"  { char reg_str[128];\n");
     fprintf(fp,"    ra->dump_register(node,reg_str);\n");
-    fprintf(fp,"      tty->print(\"%cs\",reg_str);\n",'%');
+    fprintf(fp,"    st->print(\"%cs\",reg_str);\n",'%');
     fprintf(fp,"  }\n");
   } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
     format_constant( fp, index, dtype );
   } else if (ideal_to_sReg_type(_ident) != Form::none) {
     // Special format for Stack Slot Register
-    fprintf(fp,    "{ char reg_str[128];\n");
+    fprintf(fp,"  { char reg_str[128];\n");
     fprintf(fp,"    ra->dump_register(node,reg_str);\n");
-    fprintf(fp,"      tty->print(\"%cs\",reg_str);\n",'%');
+    fprintf(fp,"    st->print(\"%cs\",reg_str);\n",'%');
     fprintf(fp,"  }\n");
   } else {
-    fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident);
+    fprintf(fp,"  st->print(\"No format defined for %s\n\");\n", _ident);
     fflush(fp);
     fprintf(stderr,"No format defined for %s\n", _ident);
     dump();
@@ -2426,36 +2466,37 @@ void  OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) {
   Form::DataType dtype;
   if (_matrule && (_matrule->is_base_register(globals) ||
                    strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
-    fprintf(fp,    "{ char reg_str[128];\n");
+    fprintf(fp,"  { char reg_str[128];\n");
     fprintf(fp,"    ra->dump_register(node->in(idx");
     if ( index != 0 ) fprintf(fp,              "+%d",index);
     fprintf(fp,                                      "),reg_str);\n");
-    fprintf(fp,"      tty->print(\"%cs\",reg_str);\n",'%');
+    fprintf(fp,"    st->print(\"%cs\",reg_str);\n",'%');
     fprintf(fp,"  }\n");
   } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
     format_constant( fp, index, dtype );
   } else if (ideal_to_sReg_type(_ident) != Form::none) {
     // Special format for Stack Slot Register
-    fprintf(fp,    "{ char reg_str[128];\n");
+    fprintf(fp,"  { char reg_str[128];\n");
     fprintf(fp,"    ra->dump_register(node->in(idx");
     if ( index != 0 ) fprintf(fp,                  "+%d",index);
     fprintf(fp,                                       "),reg_str);\n");
-    fprintf(fp,"      tty->print(\"%cs\",reg_str);\n",'%');
+    fprintf(fp,"    st->print(\"%cs\",reg_str);\n",'%');
     fprintf(fp,"  }\n");
   } else {
-    fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident);
+    fprintf(fp,"  st->print(\"No format defined for %s\n\");\n", _ident);
     assert( false,"Internal error:\n  output_external_operand() attempting to output other than a Register or Constant");
   }
 }
 
 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) {
   switch(const_type) {
-  case Form::idealI:  fprintf(fp,"st->print(\"#%%d\", _c%d);\n", const_index); break;
+  case Form::idealI: fprintf(fp,"  st->print(\"#%%d\", _c%d);\n", const_index); break;
-  case Form::idealP:  fprintf(fp,"_c%d->dump_on(st);\n",         const_index); break;
+  case Form::idealP: fprintf(fp,"  if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break;
-  case Form::idealN:  fprintf(fp,"_c%d->dump_on(st);\n",         const_index); break;
+  case Form::idealNKlass:
-  case Form::idealL:  fprintf(fp,"st->print(\"#%%lld\", _c%d);\n", const_index); break;
+  case Form::idealN: fprintf(fp,"  if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break;
-  case Form::idealF:  fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break;
+  case Form::idealL: fprintf(fp,"  st->print(\"#%%lld\", _c%d);\n", const_index); break;
-  case Form::idealD:  fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break;
+  case Form::idealF: fprintf(fp,"  st->print(\"#%%f\", _c%d);\n", const_index); break;
+  case Form::idealD: fprintf(fp,"  st->print(\"#%%f\", _c%d);\n", const_index); break;
   default:
     assert( false, "ShouldNotReachHere()");
   }
@@ -2825,17 +2866,8 @@ void Component::output(FILE *fp) {
   fprintf(fp,"Component:");  // Write to output files
   fprintf(fp, "  name = %s", _name);
   fprintf(fp, ", type = %s", _type);
-  const char * usedef = "Undefined Use/Def info";
+  assert(_usedef != 0, "unknown effect");
-  switch (_usedef) {
+  fprintf(fp, ", use/def = %s\n", getUsedefName());
-    case USE:      usedef = "USE";      break;
-    case USE_DEF:  usedef = "USE_DEF";  break;
-    case USE_KILL: usedef = "USE_KILL"; break;
-    case KILL:     usedef = "KILL";     break;
-    case TEMP:     usedef = "TEMP";     break;
-    case DEF:      usedef = "DEF";      break;
-    default: assert(false, "unknown effect");
-  }
-  fprintf(fp, ", use/def = %s\n", usedef);
 }
 
 
@@ -2927,9 +2959,9 @@ int ComponentList::num_operands() {
   return count;
 }
 
-// Return zero-based position in list;  -1 if not in list.
+// Return zero-based position of operand 'name' in list;  -1 if not in list.
 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ...
-int ComponentList::operand_position(const char *name, int usedef) {
+int ComponentList::operand_position(const char *name, int usedef, Form *fm) {
   PreserveIter pi(this);
   int position = 0;
   int num_opnds = num_operands();
@@ -2952,10 +2984,18 @@ int ComponentList::operand_position(const char *name, int usedef) {
         return position+1;
       } else {
         if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) {
-          fprintf(stderr, "the name '%s' should not precede the name '%s'\n", preceding_non_use->_name, name);
+          fprintf(stderr, "the name '%s(%s)' should not precede the name '%s(%s)'",
+                  preceding_non_use->_name, preceding_non_use->getUsedefName(),
+                  name, component->getUsedefName());
+          if (fm && fm->is_instruction()) fprintf(stderr,  "in form '%s'", fm->is_instruction()->_ident);
+          if (fm && fm->is_operand()) fprintf(stderr,  "in form '%s'", fm->is_operand()->_ident);
+          fprintf(stderr,  "\n");
         }
         if( position >= num_opnds ) {
-          fprintf(stderr, "the name '%s' is too late in its name list\n", name);
+          fprintf(stderr, "the name '%s' is too late in its name list", name);
+          if (fm && fm->is_instruction()) fprintf(stderr,  "in form '%s'", fm->is_instruction()->_ident);
+          if (fm && fm->is_operand()) fprintf(stderr,  "in form '%s'", fm->is_operand()->_ident);
+          fprintf(stderr,  "\n");
         }
         assert(position < num_opnds, "advertised index in bounds");
         return position;
@@ -3001,10 +3041,10 @@ int ComponentList::operand_position(const char *name) {
   return Not_in_list;
 }
 
-int ComponentList::operand_position_format(const char *name) {
+int ComponentList::operand_position_format(const char *name, Form *fm) {
   PreserveIter pi(this);
   int  first_position = operand_position(name);
-  int  use_position   = operand_position(name, Component::USE);
+  int  use_position   = operand_position(name, Component::USE, fm);
 
   return ((first_position < use_position) ? use_position : first_position);
 }
@@ -3267,8 +3307,8 @@ const char *MatchNode::reduce_right(FormDict &globals) const {
 
   // If we are a "Set", start from the right child.
   const MatchNode *const mnode = sets_result() ?
-    (const MatchNode *const)this->_rChild :
+    (const MatchNode *)this->_rChild :
-    (const MatchNode *const)this;
+    (const MatchNode *)this;
 
   // If our right child exists, it is the right reduction
   if ( mnode->_rChild ) {
@@ -3285,8 +3325,8 @@ const char *MatchNode::reduce_left(FormDict &globals) const {
 
   // If we are a "Set", start from the right child.
   const MatchNode *const mnode = sets_result() ?
-    (const MatchNode *const)this->_rChild :
+    (const MatchNode *)this->_rChild :
-    (const MatchNode *const)this;
+    (const MatchNode *)this;
 
   // If our left child exists, it is the left reduction
   if ( mnode->_lChild ) {
@@ -3390,9 +3430,9 @@ void MatchNode::output(FILE *fp) {
 
 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
   static const char *needs_ideal_memory_list[] = {
-    "StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" ,
+    "StoreI","StoreL","StoreP","StoreN","StoreNKlass","StoreD","StoreF" ,
     "StoreB","StoreC","Store" ,"StoreFP",
-    "LoadI", "LoadUI2L", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF"  ,
+    "LoadI", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF"  ,
     "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" ,
     "StoreVector", "LoadVector",
     "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned",
@@ -3947,6 +3987,8 @@ int MatchRule::is_expensive() const {
         strcmp(opType,"ConvL2I")==0 ||
         strcmp(opType,"DecodeN")==0 ||
         strcmp(opType,"EncodeP")==0 ||
+        strcmp(opType,"EncodePKlass")==0 ||
+        strcmp(opType,"DecodeNKlass")==0 ||
         strcmp(opType,"RoundDouble")==0 ||
         strcmp(opType,"RoundFloat")==0 ||
         strcmp(opType,"ReverseBytesI")==0 ||
@@ -4108,12 +4150,17 @@ void MatchRule::dump() {
   output(stderr);
 }
 
-void MatchRule::output(FILE *fp) {
+// Write just one line.
+void MatchRule::output_short(FILE *fp) {
   fprintf(fp,"MatchRule: ( %s",_name);
   if (_lChild) _lChild->output(fp);
   if (_rChild) _rChild->output(fp);
-  fprintf(fp," )\n");
+  fprintf(fp," )");
-  fprintf(fp,"   nesting depth = %d\n", _depth);
+}
+
+void MatchRule::output(FILE *fp) {
+  output_short(fp);
+  fprintf(fp,"\n   nesting depth = %d\n", _depth);
   if (_result) fprintf(fp,"   Result Type = %s", _result);
   fprintf(fp,"\n");
 }

hotspot/src/share/vm/adlc/formssel.hpp

@@ -76,7 +76,7 @@ class InstructForm : public Form {
 private:
   bool           _ideal_only;       // Not a user-defined instruction
   // Members used for tracking CISC-spilling
-  uint           _cisc_spill_operand;// Which operand may cisc-spill
+  int            _cisc_spill_operand;// Which operand may cisc-spill
   void           set_cisc_spill_operand(uint op_index) { _cisc_spill_operand = op_index; }
   bool           _is_cisc_alternate;
   InstructForm  *_cisc_spill_alternate;// cisc possible replacement
@@ -103,7 +103,7 @@ public:
   RewriteRule   *_rewrule;         // Rewrite rule for this instruction
   FormatRule    *_format;          // Format for assembly generation
   Peephole      *_peephole;        // List of peephole rules for instruction
-  const char    *_ins_pipe;        // Instruction Scheduline description class
+  const char    *_ins_pipe;        // Instruction Scheduling description class
 
   uint          *_uniq_idx;        // Indexes of unique operands
   int            _uniq_idx_length; // Length of _uniq_idx array
@@ -198,6 +198,7 @@ public:
 
   virtual const char *cost();      // Access ins_cost attribute
   virtual uint        num_opnds(); // Count of num_opnds for MachNode class
+                                   // Counts USE_DEF opnds twice.  See also num_unique_opnds().
   virtual uint        num_post_match_opnds();
   virtual uint        num_consts(FormDict &globals) const;// Constants in match rule
   // Constants in match rule with specified type
@@ -228,6 +229,7 @@ public:
   // Return number of relocation entries needed for this instruction.
   virtual uint        reloc(FormDict &globals);
 
+  const char         *opnd_ident(int idx);  // Name of operand #idx.
   const char         *reduce_result();
   // Return the name of the operand on the right hand side of the binary match
   // Return NULL if there is no right hand side
@@ -240,7 +242,7 @@ public:
   // Check if this instruction can cisc-spill to 'alternate'
   bool                cisc_spills_to(ArchDesc &AD, InstructForm *alternate);
   InstructForm       *cisc_spill_alternate() { return _cisc_spill_alternate; }
-  uint                cisc_spill_operand() const { return _cisc_spill_operand; }
+  int                 cisc_spill_operand() const { return _cisc_spill_operand; }
   bool                is_cisc_alternate() const { return _is_cisc_alternate; }
   void                set_cisc_alternate(bool val) { _is_cisc_alternate = val; }
   const char         *cisc_reg_mask_name() const { return _cisc_reg_mask_name; }
@@ -277,6 +279,7 @@ public:
                           return idx;
                         }
   }
+  const char         *unique_opnd_ident(int idx);  // Name of operand at unique idx.
 
   // Operands which are only KILLs aren't part of the input array and
   // require special handling in some cases.  Their position in this
@@ -889,6 +892,7 @@ public:
 
   void dump();                     // Debug printer
   void output(FILE *fp);           // Write to output files
+  const char* getUsedefName();
 
 public:
   // Implementation depends upon working bit intersection and union.
@@ -1030,6 +1034,7 @@ public:
   void       matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt);
 
   void dump();
+  void output_short(FILE *fp);
   void output(FILE *fp);
 };
 

hotspot/src/share/vm/adlc/main.cpp

@@ -341,14 +341,20 @@ int main(int argc, char *argv[])
 static void usage(ArchDesc& AD)
 {
   printf("Architecture Description Language Compiler\n\n");
-  printf("Usage: adl [-doqw] [-Dflag[=def]] [-Uflag] [-cFILENAME] [-hFILENAME] [-aDFAFILE] ADLFILE\n");
+  printf("Usage: adlc [-doqwTs] [-#]* [-D<FLAG>[=<DEF>]] [-U<FLAG>] [-c<CPP_FILE_NAME>] [-h<HPP_FILE_NAME>] [-a<DFA_FILE_NAME>] [-v<GLOBALS_FILE_NAME>] <ADL_FILE_NAME>\n");
   printf(" d  produce DFA debugging info\n");
   printf(" o  no output produced, syntax and semantic checking only\n");
   printf(" q  quiet mode, supresses all non-essential messages\n");
   printf(" w  suppress warning messages\n");
+  printf(" T  make DFA as many subroutine calls\n");
+  printf(" s  output which instructions are cisc-spillable\n");
+  printf(" D  define preprocessor symbol\n");
+  printf(" U  undefine preprocessor symbol\n");
   printf(" c  specify CPP file name (default: %s)\n", AD._CPP_file._name);
   printf(" h  specify HPP file name (default: %s)\n", AD._HPP_file._name);
   printf(" a  specify DFA output file name\n");
+  printf(" v  specify adGlobals output file name\n");
+  printf(" #  increment ADL debug level\n");
   printf("\n");
 }
 
@@ -450,22 +456,6 @@ static char *strip_ext(char *fname)
   return fname;
 }
 
-//------------------------------strip_path_and_ext------------------------------
-static char *strip_path_and_ext(char *fname)
-{
-  char *ep;
-  char *sp;
-
-  if (fname) {
-    for (sp = fname; *sp; sp++)
-      if (*sp == '/')  fname = sp+1;
-    ep = fname;                    // start at first character and look for '.'
-    while (ep <= (fname + strlen(fname) - 1) && *ep != '.') ep++;
-    if (*ep == '.')     *ep = '\0'; // truncate string at '.'
-  }
-  return fname;
-}
-
 //------------------------------base_plus_suffix-------------------------------
 // New concatenated string
 static char *base_plus_suffix(const char* base, const char *suffix)
@@ -477,18 +467,6 @@ static char *base_plus_suffix(const char* base, const char *suffix)
   return fname;
 }
 
-
-//------------------------------prefix_plus_base_plus_suffix-------------------
-// New concatenated string
-static char *prefix_plus_base_plus_suffix(const char* prefix, const char* base, const char *suffix)
-{
-  int len = (int)strlen(prefix) + (int)strlen(base) + (int)strlen(suffix) + 1;
-
-  char* fname = new char[len];
-  sprintf(fname,"%s%s%s",prefix,base,suffix);
-  return fname;
-}
-
 //------------------------------get_legal_text---------------------------------
 // Get pointer to legal text at the beginning of AD file.
 // This code assumes that a legal text starts at the beginning of .ad files,

hotspot/src/share/vm/adlc/output_c.cpp

@@ -518,6 +518,14 @@ static int pipeline_res_mask_initializer(
 
     int cycles = piperesource->_cycles;
     uint stage          = pipeline->_stages.index(piperesource->_stage);
+    if (NameList::Not_in_list == stage) {
+      fprintf(stderr,
+              "pipeline_res_mask_initializer: "
+              "semantic error: "
+              "pipeline stage undeclared: %s\n",
+              piperesource->_stage);
+      exit(1);
+    }
     uint upper_limit    = stage+cycles-1;
     uint lower_limit    = stage-1;
     uint upper_idx      = upper_limit >> 5;
@@ -1000,7 +1008,7 @@ void ArchDesc::build_pipe_classes(FILE *fp_cpp) {
   }
   fprintf(fp_cpp, "};\n\n");
   fprintf(fp_cpp, "#ifndef PRODUCT\n");
-  fprintf(fp_cpp, "void Bundle::dump() const {\n");
+  fprintf(fp_cpp, "void Bundle::dump(outputStream *st) const {\n");
   fprintf(fp_cpp, "  static const char * bundle_flags[] = {\n");
   fprintf(fp_cpp, "    \"\",\n");
   fprintf(fp_cpp, "    \"use nop delay\",\n");
@@ -1019,22 +1027,22 @@ void ArchDesc::build_pipe_classes(FILE *fp_cpp) {
   // See if the same string is in the table
   fprintf(fp_cpp, "  bool needs_comma = false;\n\n");
   fprintf(fp_cpp, "  if (_flags) {\n");
-  fprintf(fp_cpp, "    tty->print(\"%%s\", bundle_flags[_flags]);\n");
+  fprintf(fp_cpp, "    st->print(\"%%s\", bundle_flags[_flags]);\n");
   fprintf(fp_cpp, "    needs_comma = true;\n");
   fprintf(fp_cpp, "  };\n");
   fprintf(fp_cpp, "  if (instr_count()) {\n");
-  fprintf(fp_cpp, "    tty->print(\"%%s%%d instr%%s\", needs_comma ? \", \" : \"\", instr_count(), instr_count() != 1 ? \"s\" : \"\");\n");
+  fprintf(fp_cpp, "    st->print(\"%%s%%d instr%%s\", needs_comma ? \", \" : \"\", instr_count(), instr_count() != 1 ? \"s\" : \"\");\n");
   fprintf(fp_cpp, "    needs_comma = true;\n");
   fprintf(fp_cpp, "  };\n");
   fprintf(fp_cpp, "  uint r = resources_used();\n");
   fprintf(fp_cpp, "  if (r) {\n");
-  fprintf(fp_cpp, "    tty->print(\"%%sresource%%s:\", needs_comma ? \", \" : \"\", (r & (r-1)) != 0 ? \"s\" : \"\");\n");
+  fprintf(fp_cpp, "    st->print(\"%%sresource%%s:\", needs_comma ? \", \" : \"\", (r & (r-1)) != 0 ? \"s\" : \"\");\n");
   fprintf(fp_cpp, "    for (uint i = 0; i < %d; i++)\n", _pipeline->_rescount);
   fprintf(fp_cpp, "      if ((r & (1 << i)) != 0)\n");
-  fprintf(fp_cpp, "        tty->print(\" %%s\", resource_names[i]);\n");
+  fprintf(fp_cpp, "        st->print(\" %%s\", resource_names[i]);\n");
   fprintf(fp_cpp, "    needs_comma = true;\n");
   fprintf(fp_cpp, "  };\n");
-  fprintf(fp_cpp, "  tty->print(\"\\n\");\n");
+  fprintf(fp_cpp, "  st->print(\"\\n\");\n");
   fprintf(fp_cpp, "}\n");
   fprintf(fp_cpp, "#endif\n");
 }
@@ -1048,39 +1056,6 @@ static void defineOut_RegMask(FILE *fp, const char *node, const char *regMask) {
           node, regMask);
 }
 
-// Scan the peepmatch and output a test for each instruction
-static void check_peepmatch_instruction_tree(FILE *fp, PeepMatch *pmatch, PeepConstraint *pconstraint) {
-  int         parent        = -1;
-  int         inst_position = 0;
-  const char* inst_name     = NULL;
-  int         input         = 0;
-  fprintf(fp, "      // Check instruction sub-tree\n");
-  pmatch->reset();
-  for( pmatch->next_instruction( parent, inst_position, inst_name, input );
-       inst_name != NULL;
-       pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
-    // If this is not a placeholder
-    if( ! pmatch->is_placeholder() ) {
-      // Define temporaries 'inst#', based on parent and parent's input index
-      if( parent != -1 ) {                // root was initialized
-        fprintf(fp, "  inst%d = inst%d->in(%d);\n",
-                inst_position, parent, input);
-      }
-
-      // When not the root
-      // Test we have the correct instruction by comparing the rule
-      if( parent != -1 ) {
-        fprintf(fp, "  matches = matches &&  ( inst%d->rule() == %s_rule );",
-                inst_position, inst_name);
-      }
-    } else {
-      // Check that user did not try to constrain a placeholder
-      assert( ! pconstraint->constrains_instruction(inst_position),
-              "fatal(): Can not constrain a placeholder instruction");
-    }
-  }
-}
-
 static void print_block_index(FILE *fp, int inst_position) {
   assert( inst_position >= 0, "Instruction number less than zero");
   fprintf(fp, "block_index");
@@ -1242,7 +1217,7 @@ static void check_peepconstraints(FILE *fp, FormDict &globals, PeepMatch *pmatch
         if( left_op_index != 0 ) {
           assert( (left_index <= 9999) && (left_op_index <= 9999), "exceed string size");
           // Must have index into operands
-          sprintf(left_reg_index,",inst%d_idx%d", left_index, left_op_index);
+          sprintf(left_reg_index,",inst%d_idx%d", (int)left_index, left_op_index);
         } else {
           strcpy(left_reg_index, "");
         }
@@ -1255,7 +1230,7 @@ static void check_peepconstraints(FILE *fp, FormDict &globals, PeepMatch *pmatch
           if( right_op_index != 0 ) {
             assert( (right_index <= 9999) && (right_op_index <= 9999), "exceed string size");
             // Must have index into operands
-            sprintf(right_reg_index,",inst%d_idx%d", right_index, right_op_index);
+            sprintf(right_reg_index,",inst%d_idx%d", (int)right_index, right_op_index);
           } else {
             strcpy(right_reg_index, "");
           }
@@ -1645,7 +1620,7 @@ void ArchDesc::defineExpand(FILE *fp, InstructForm *node) {
           new_pos = new_inst->operand_position(parameter,Component::USE);
           exp_pos += node->num_opnds();
           // If there is no use of the created operand, just skip it
-          if (new_pos != -1) {
+          if (new_pos != NameList::Not_in_list) {
             //Copy the operand from the original made above
             fprintf(fp,"  n%d->set_opnd_array(%d, op%d->clone(C)); // %s\n",
                     cnt, new_pos, exp_pos-node->num_opnds(), opid);
@@ -1789,7 +1764,8 @@ void ArchDesc::defineExpand(FILE *fp, InstructForm *node) {
       // Build mapping from num_edges to local variables
       fprintf(fp,"  unsigned num0 = 0;\n");
       for( i = 1; i < cur_num_opnds; i++ ) {
-        fprintf(fp,"  unsigned num%d = opnd_array(%d)->num_edges();\n",i,i);
+        fprintf(fp,"  unsigned num%d = opnd_array(%d)->num_edges();",i,i);
+        fprintf(fp, " \t// %s\n", node->opnd_ident(i));
       }
       // Build a mapping from operand index to input edges
       fprintf(fp,"  unsigned idx0 = oper_input_base();\n");
@@ -1934,6 +1910,7 @@ public:
   }
 
   // Track necessary state when identifying a replacement variable
+  // @arg rep_var: The formal parameter of the encoding.
   void update_state(const char *rep_var) {
     // A replacement variable or one of its subfields
     // Obtain replacement variable from list
@@ -1955,7 +1932,7 @@ public:
         }
       }
       else {
-        // Lookup its position in parameter list
+        // Lookup its position in (formal) parameter list of encoding
         int   param_no  = _encoding.rep_var_index(rep_var);
         if ( param_no == -1 ) {
           _AD.syntax_err( _encoding._linenum,
@@ -1964,6 +1941,7 @@ public:
         }
 
         // Lookup the corresponding ins_encode parameter
+        // This is the argument (actual parameter) to the encoding.
         const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
         if (inst_rep_var == NULL) {
           _AD.syntax_err( _ins_encode._linenum,
@@ -2329,6 +2307,7 @@ private:
           // Add parameter for index position, if not result operand
           if( _operand_idx != 0 ) fprintf(_fp,",idx%d", _operand_idx);
           fprintf(_fp,")");
+          fprintf(_fp, "/* %s */", _operand_name);
         }
       } else {
         assert( _reg_status == LITERAL_OUTPUT, "should have output register literal in emit_rep_var");
@@ -2368,7 +2347,7 @@ private:
         }
       } else {
         assert( _constant_status == LITERAL_OUTPUT, "should have output constant literal in emit_rep_var");
-        // Cosntant literal has already been sent to output file, nothing more needed
+        // Constant literal has already been sent to output file, nothing more needed
       }
     }
     else if ( strcmp(rep_var,"$disp") == 0 ) {
@@ -2387,6 +2366,8 @@ private:
     }
     else {
       printf("emit_field: %s\n",rep_var);
+      globalAD->syntax_err(_inst._linenum, "Unknown replacement variable %s in format statement of %s.",
+                           rep_var, _inst._ident);
       assert( false, "UnImplemented()");
     }
   }
@@ -2579,7 +2560,7 @@ void ArchDesc::defineEmit(FILE* fp, InstructForm& inst) {
   }
 
   // (3) and (4)
-  fprintf(fp, "}\n");
+  fprintf(fp, "}\n\n");
 }
 
 // defineEvalConstant ---------------------------------------------------------
@@ -2750,15 +2731,6 @@ static void defineClone(FILE *fp, FormDict &globalNames, OperandForm &oper) {
   fprintf(fp,"}\n");
 }
 
-static void define_hash(FILE *fp, char *operand) {
-  fprintf(fp,"uint %sOper::hash() const { return 5; }\n", operand);
-}
-
-static void define_cmp(FILE *fp, char *operand) {
-  fprintf(fp,"uint %sOper::cmp( const MachOper &oper ) const { return opcode() == oper.opcode(); }\n", operand);
-}
-
-
 // Helper functions for bug 4796752, abstracted with minimal modification
 // from define_oper_interface()
 OperandForm *rep_var_to_operand(const char *encoding, OperandForm &oper, FormDict &globals) {
@@ -2852,14 +2824,14 @@ void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &glob
   } else if ( (strcmp(name,"disp") == 0) ) {
     fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
   } else {
-    fprintf(fp,"() const { ");
+    fprintf(fp,"() const { \n");
   }
 
   // Check for hexadecimal value OR replacement variable
   if( *encoding == '$' ) {
     // Replacement variable
     const char *rep_var = encoding + 1;
-    fprintf(fp,"// Replacement variable: %s\n", encoding+1);
+    fprintf(fp,"    // Replacement variable: %s\n", encoding+1);
     // Lookup replacement variable, rep_var, in operand's component list
     const Component *comp = oper._components.search(rep_var);
     assert( comp != NULL, "Replacement variable not found in components");
@@ -2880,10 +2852,10 @@ void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &glob
     } else if ( op->ideal_to_sReg_type(op->_ident) != Form::none ) {
       // StackSlot for an sReg comes either from input node or from self, when idx==0
       fprintf(fp,"    if( idx != 0 ) {\n");
-      fprintf(fp,"      // Access register number for input operand\n");
+      fprintf(fp,"      // Access stack offset (register number) for input operand\n");
       fprintf(fp,"      return ra_->reg2offset(ra_->get_reg_first(node->in(idx)));/* sReg */\n");
       fprintf(fp,"    }\n");
-      fprintf(fp,"    // Access register number from myself\n");
+      fprintf(fp,"    // Access stack offset (register number) from myself\n");
       fprintf(fp,"    return ra_->reg2offset(ra_->get_reg_first(node));/* sReg */\n");
     } else if (op->_matrule && op->_matrule->is_base_constant(globals)) {
       // Constant
@@ -2900,7 +2872,7 @@ void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &glob
   }
   else if( *encoding == '0' && *(encoding+1) == 'x' ) {
     // Hex value
-    fprintf(fp,"return %s;", encoding);
+    fprintf(fp,"    return %s;\n", encoding);
   } else {
     assert( false, "Do not support octal or decimal encode constants");
   }
@@ -3134,7 +3106,7 @@ void ArchDesc::defineClasses(FILE *fp) {
     uint reloc_size = instr->reloc(_globalNames);
     if ( reloc_size != 0 ) {
       fprintf(fp,"int %sNode::reloc() const {\n", instr->_ident);
-      fprintf(fp,  "  return  %d;\n", reloc_size );
+      fprintf(fp,"  return %d;\n", reloc_size);
       fprintf(fp,"}\n");
       fprintf(fp,"\n");
     }
@@ -3241,7 +3213,7 @@ void ArchDesc::defineClasses(FILE *fp) {
 class OutputReduceOp : public OutputMap {
 public:
   OutputReduceOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "reduceOp") {};
 
   void declaration() { fprintf(_hpp, "extern const int   reduceOp[];\n"); }
   void definition()  { fprintf(_cpp, "const        int   reduceOp[] = {\n"); }
@@ -3276,7 +3248,7 @@ public:
 class OutputLeftOp : public OutputMap {
 public:
   OutputLeftOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "leftOp") {};
 
   void declaration() { fprintf(_hpp, "extern const int   leftOp[];\n"); }
   void definition()  { fprintf(_cpp, "const        int   leftOp[] = {\n"); }
@@ -3306,7 +3278,7 @@ public:
 class OutputRightOp : public OutputMap {
 public:
   OutputRightOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "rightOp") {};
 
   void declaration() { fprintf(_hpp, "extern const int   rightOp[];\n"); }
   void definition()  { fprintf(_cpp, "const        int   rightOp[] = {\n"); }
@@ -3336,11 +3308,11 @@ public:
 class OutputRuleName : public OutputMap {
 public:
   OutputRuleName(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "ruleName") {};
 
   void declaration() { fprintf(_hpp, "extern const char *ruleName[];\n"); }
   void definition()  { fprintf(_cpp, "const char        *ruleName[] = {\n"); }
-  void closing()     { fprintf(_cpp, "  \"no trailing comma\"\n");
+  void closing()     { fprintf(_cpp, "  \"invalid rule name\" // no trailing comma\n");
                        OutputMap::closing();
   }
   void map(OpClassForm &opc)  { fprintf(_cpp, "  \"%s\"", _AD.machOperEnum(opc._ident) ); }
@@ -3354,7 +3326,7 @@ public:
 class OutputSwallowed : public OutputMap {
 public:
   OutputSwallowed(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "swallowed") {};
 
   void declaration() { fprintf(_hpp, "extern const bool  swallowed[];\n"); }
   void definition()  { fprintf(_cpp, "const        bool  swallowed[] = {\n"); }
@@ -3375,7 +3347,7 @@ public:
 class OutputInstChainRule : public OutputMap {
 public:
   OutputInstChainRule(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "instruction_chain_rule") {};
 
   void declaration() { fprintf(_hpp, "extern const bool  instruction_chain_rule[];\n"); }
   void definition()  { fprintf(_cpp, "const        bool  instruction_chain_rule[] = {\n"); }
@@ -3416,7 +3388,7 @@ void ArchDesc::build_map(OutputMap &map) {
     if ( op->ideal_only() )  continue;
 
     // Generate the entry for this opcode
-    map.map(*op);    fprintf(fp_cpp, ", // %d\n", idx);
+    fprintf(fp_cpp, "  /* %4d */", idx); map.map(*op); fprintf(fp_cpp, ",\n");
     ++idx;
   };
   fprintf(fp_cpp, "  // last operand\n");
@@ -3425,7 +3397,7 @@ void ArchDesc::build_map(OutputMap &map) {
   map.record_position(OutputMap::BEGIN_OPCLASSES, idx );
   _opclass.reset();
   for(; (opc = (OpClassForm*)_opclass.iter()) != NULL; ) {
-    map.map(*opc);    fprintf(fp_cpp, ", // %d\n", idx);
+    fprintf(fp_cpp, "  /* %4d */", idx); map.map(*opc); fprintf(fp_cpp, ",\n");
     ++idx;
   };
   fprintf(fp_cpp, "  // last operand class\n");
@@ -3435,7 +3407,7 @@ void ArchDesc::build_map(OutputMap &map) {
   _internalOpNames.reset();
   char *name = NULL;
   for(; (name = (char *)_internalOpNames.iter()) != NULL; ) {
-    map.map(name);    fprintf(fp_cpp, ", // %d\n", idx);
+    fprintf(fp_cpp, "  /* %4d */", idx); map.map(name); fprintf(fp_cpp, ",\n");
     ++idx;
   };
   fprintf(fp_cpp, "  // last internally defined operand\n");
@@ -3453,7 +3425,7 @@ void ArchDesc::build_map(OutputMap &map) {
         if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
         if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
 
-        map.map(*inst);      fprintf(fp_cpp, ", // %d\n", idx);
+        fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
         ++idx;
       };
       map.record_position(OutputMap::BEGIN_REMATERIALIZE, idx );
@@ -3464,7 +3436,7 @@ void ArchDesc::build_map(OutputMap &map) {
         if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
         if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
 
-        map.map(*inst);      fprintf(fp_cpp, ", // %d\n", idx);
+        fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
         ++idx;
       };
       map.record_position(OutputMap::END_INST_CHAIN_RULES, idx );
@@ -3478,7 +3450,7 @@ void ArchDesc::build_map(OutputMap &map) {
         if ( inst->is_simple_chain_rule(_globalNames) ) continue;
         if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
 
-        map.map(*inst);      fprintf(fp_cpp, ", // %d\n", idx);
+        fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
         ++idx;
       };
       map.record_position(OutputMap::END_REMATERIALIZE, idx );
@@ -3489,7 +3461,7 @@ void ArchDesc::build_map(OutputMap &map) {
         if ( inst->is_simple_chain_rule(_globalNames) ) continue;
         if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
 
-        map.map(*inst);      fprintf(fp_cpp, ", // %d\n", idx);
+        fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
         ++idx;
       };
     }
@@ -3571,7 +3543,7 @@ void ArchDesc::buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp) {
     next              = _register->iter_RegDefs();
     char policy       = reg_save_policy(rdef->_callconv);
     const char *comma = (next != NULL) ? "," : " // no trailing comma";
-    fprintf(fp_cpp, "  '%c'%s\n", policy, comma);
+    fprintf(fp_cpp, "  '%c'%s // %s\n", policy, comma, rdef->_regname);
   }
   fprintf(fp_cpp, "};\n\n");
 
@@ -3583,7 +3555,7 @@ void ArchDesc::buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp) {
     next        = _register->iter_RegDefs();
     char policy = reg_save_policy(rdef->_c_conv);
     const char *comma = (next != NULL) ? "," : " // no trailing comma";
-    fprintf(fp_cpp, "  '%c'%s\n", policy, comma);
+    fprintf(fp_cpp, "  '%c'%s // %s\n", policy, comma, rdef->_regname);
   }
   fprintf(fp_cpp, "};\n\n");
 
@@ -3644,6 +3616,8 @@ static void path_to_constant(FILE *fp, FormDict &globals,
       fprintf(fp, "_leaf->bottom_type()->is_ptr()");
     } else if ( (strcmp(optype,"ConN") == 0) ) {
       fprintf(fp, "_leaf->bottom_type()->is_narrowoop()");
+    } else if ( (strcmp(optype,"ConNKlass") == 0) ) {
+      fprintf(fp, "_leaf->bottom_type()->is_narrowklass()");
     } else if ( (strcmp(optype,"ConF") == 0) ) {
       fprintf(fp, "_leaf->getf()");
     } else if ( (strcmp(optype,"ConD") == 0) ) {
@@ -3792,7 +3766,7 @@ void ArchDesc::buildMachNode(FILE *fp_cpp, InstructForm *inst, const char *inden
       // For each operand not in the match rule, call MachOperGenerator
       // with the enum for the opcode that needs to be built.
       ComponentList clist = inst->_components;
-      int         index  = clist.operand_position(comp->_name, comp->_usedef);
+      int         index  = clist.operand_position(comp->_name, comp->_usedef, inst);
       const char *opcode = machOperEnum(comp->_type);
       fprintf(fp_cpp, "%s node->set_opnd_array(%d, ", indent, index);
       fprintf(fp_cpp, "MachOperGenerator(%s, C));\n", opcode);
@@ -4137,6 +4111,9 @@ static int PrintAdlcCisc = 0;
 // Get info for the CISC_oracle and MachNode::cisc_version()
 void ArchDesc::identify_cisc_spill_instructions() {
 
+  if (_frame == NULL)
+    return;
+
   // Find the user-defined operand for cisc-spilling
   if( _frame->_cisc_spilling_operand_name != NULL ) {
     const Form *form = _globalNames[_frame->_cisc_spilling_operand_name];

hotspot/src/share/vm/adlc/output_h.cpp

@@ -25,6 +25,8 @@
 // output_h.cpp - Class HPP file output routines for architecture definition
 #include "adlc.hpp"
 
+// The comment delimiter used in format statements after assembler instructions.
+#define commentSeperator "!"
 
 // Generate the #define that describes the number of registers.
 static void defineRegCount(FILE *fp, RegisterForm *registers) {
@@ -79,10 +81,15 @@ void ArchDesc::buildMachRegisterNumbers(FILE *fp_hpp) {
     _register->reset_RegDefs();
     int i = 0;
     while( (reg_def = _register->iter_RegDefs()) != NULL ) {
-      fprintf(fp_hpp,"  %s_num,\t\t// %d\n", reg_def->_regname, i++);
+      fprintf(fp_hpp,"  %s_num,", reg_def->_regname);
+      for (int j = 0; j < 20-(int)strlen(reg_def->_regname); j++) fprintf(fp_hpp, " ");
+      fprintf(fp_hpp," // enum %3d, regnum %3d, reg encode %3s\n",
+              i++,
+              reg_def->register_num(),
+              reg_def->register_encode());
     }
     // Finish defining enumeration
-    fprintf(fp_hpp, "  _last_Mach_Reg\t// %d\n", i);
+    fprintf(fp_hpp, "  _last_Mach_Reg            // %d\n", i);
     fprintf(fp_hpp, "};\n");
   }
 
@@ -121,13 +128,24 @@ void ArchDesc::buildMachRegisterEncodes(FILE *fp_hpp) {
     fprintf(fp_hpp, "// in the order of occurrence in the alloc_class(es).\n");
     fprintf(fp_hpp, "enum MachRegisterEncodes {\n");
 
+    // Find max enum string length.
+    size_t maxlen = 0;
+    _register->reset_RegDefs();
+    reg_def = _register->iter_RegDefs();
+    while (reg_def != NULL) {
+      size_t len = strlen(reg_def->_regname);
+      if (len > maxlen) maxlen = len;
+      reg_def = _register->iter_RegDefs();
+    }
+
     // Output the register encoding for each register in the allocation classes
     _register->reset_RegDefs();
     reg_def_next = _register->iter_RegDefs();
     while( (reg_def = reg_def_next) != NULL ) {
       reg_def_next = _register->iter_RegDefs();
-      fprintf(fp_hpp,"  %s_enc = %s%s\n",
+      fprintf(fp_hpp,"  %s_enc", reg_def->_regname);
-              reg_def->_regname, reg_def->register_encode(), reg_def_next == NULL? "" : "," );
+      for (size_t i = strlen(reg_def->_regname); i < maxlen; i++) fprintf(fp_hpp, " ");
+      fprintf(fp_hpp," = %3s%s\n", reg_def->register_encode(), reg_def_next == NULL? "" : "," );
     }
     // Finish defining enumeration
     fprintf(fp_hpp, "};\n");
@@ -177,14 +195,6 @@ static void in_RegMask(FILE *fp) {
   fprintf(fp,"  virtual const RegMask *in_RegMask(int index) const;\n");
 }
 
-static void declare_hash(FILE *fp) {
-  fprintf(fp,"  virtual uint           hash() const;\n");
-}
-
-static void declare_cmp(FILE *fp) {
-  fprintf(fp,"  virtual uint           cmp( const MachOper &oper ) const;\n");
-}
-
 static void declareConstStorage(FILE *fp, FormDict &globals, OperandForm *oper) {
   int i = 0;
   Component *comp;
@@ -207,6 +217,10 @@ static void declareConstStorage(FILE *fp, FormDict &globals, OperandForm *oper)
       if (i > 0) fprintf(fp,", ");
       fprintf(fp,"  const TypeNarrowOop *_c%d;\n", i);
     }
+    else if (!strcmp(type, "ConNKlass")) {
+      if (i > 0) fprintf(fp,", ");
+      fprintf(fp,"  const TypeNarrowKlass *_c%d;\n", i);
+    }
     else if (!strcmp(type, "ConL")) {
       if (i > 0) fprintf(fp,", ");
       fprintf(fp,"  jlong          _c%d;\n", i);
@@ -243,6 +257,10 @@ static void declareConstStorage(FILE *fp, FormDict &globals, OperandForm *oper)
         fprintf(fp,"  const TypePtr *_c%d;\n", i);
         i++;
       }
+      else if (!strcmp(comp->base_type(globals), "ConNKlass")) {
+        fprintf(fp,"  const TypePtr *_c%d;\n", i);
+        i++;
+      }
       else if (!strcmp(comp->base_type(globals), "ConL")) {
         fprintf(fp,"  jlong            _c%d;\n", i);
         i++;
@@ -289,6 +307,7 @@ static void defineConstructor(FILE *fp, const char *name, uint num_consts,
       break;
     }
     case Form::idealN :      { fprintf(fp,"const TypeNarrowOop *c%d", i); break; }
+    case Form::idealNKlass : { fprintf(fp,"const TypeNarrowKlass *c%d", i); break; }
     case Form::idealP :      { fprintf(fp,"const TypePtr *c%d", i); break; }
     case Form::idealL :      { fprintf(fp,"jlong c%d", i);   break;        }
     case Form::idealF :      { fprintf(fp,"jfloat c%d", i);  break;        }
@@ -316,6 +335,11 @@ static void defineConstructor(FILE *fp, const char *name, uint num_consts,
         fprintf(fp,"const TypePtr *c%d", i);
         i++;
       }
+      else if (!strcmp(comp->base_type(globals), "ConNKlass")) {
+        if (i > 0) fprintf(fp,", ");
+        fprintf(fp,"const TypePtr *c%d", i);
+        i++;
+      }
       else if (!strcmp(comp->base_type(globals), "ConL")) {
         if (i > 0) fprintf(fp,", ");
         fprintf(fp,"jlong c%d", i);
@@ -370,6 +394,7 @@ static void defineCCodeDump(OperandForm* oper, FILE *fp, int i) {
 static uint dump_spec_constant(FILE *fp, const char *ideal_type, uint i, OperandForm* oper) {
   if (!strcmp(ideal_type, "ConI")) {
     fprintf(fp,"   st->print(\"#%%d\", _c%d);\n", i);
+    fprintf(fp,"   st->print(\"/0x%%08x\", _c%d);\n", i);
     ++i;
   }
   else if (!strcmp(ideal_type, "ConP")) {
@@ -380,16 +405,25 @@ static uint dump_spec_constant(FILE *fp, const char *ideal_type, uint i, Operand
     fprintf(fp,"    _c%d->dump_on(st);\n", i);
     ++i;
   }
+  else if (!strcmp(ideal_type, "ConNKlass")) {
+    fprintf(fp,"    _c%d->dump_on(st);\n", i);
+    ++i;
+  }
   else if (!strcmp(ideal_type, "ConL")) {
     fprintf(fp,"    st->print(\"#\" INT64_FORMAT, _c%d);\n", i);
+    fprintf(fp,"    st->print(\"/\" PTR64_FORMAT, _c%d);\n", i);
     ++i;
   }
   else if (!strcmp(ideal_type, "ConF")) {
     fprintf(fp,"    st->print(\"#%%f\", _c%d);\n", i);
+    fprintf(fp,"    jint _c%di = JavaValue(_c%d).get_jint();\n", i, i);
+    fprintf(fp,"    st->print(\"/0x%%x/\", _c%di);\n", i);
     ++i;
   }
   else if (!strcmp(ideal_type, "ConD")) {
     fprintf(fp,"    st->print(\"#%%f\", _c%d);\n", i);
+    fprintf(fp,"    jlong _c%dl = JavaValue(_c%d).get_jlong();\n", i, i);
+    fprintf(fp,"    st->print(\"/\" PTR64_FORMAT, _c%dl);\n", i);
     ++i;
   }
   else if (!strcmp(ideal_type, "Bool")) {
@@ -411,7 +445,7 @@ void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_
   }
 
   // Local pointer indicates remaining part of format rule
-  uint  idx = 0;                   // position of operand in match rule
+  int idx = 0;                   // position of operand in match rule
 
   // Generate internal format function, used when stored locally
   fprintf(fp, "\n#ifndef PRODUCT\n");
@@ -426,13 +460,12 @@ void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_
       oper._format->_rep_vars.reset();
       oper._format->_strings.reset();
       while ( (string = oper._format->_strings.iter()) != NULL ) {
-        fprintf(fp,"  ");
 
         // Check if this is a standard string or a replacement variable
         if ( string != NameList::_signal ) {
           // Normal string
           // Pass through to st->print
-          fprintf(fp,"st->print(\"%s\");\n", string);
+          fprintf(fp,"  st->print(\"%s\");\n", string);
         } else {
           // Replacement variable
           const char *rep_var = oper._format->_rep_vars.iter();
@@ -498,13 +531,12 @@ void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_
       oper._format->_rep_vars.reset();
       oper._format->_strings.reset();
       while ( (string = oper._format->_strings.iter()) != NULL ) {
-        fprintf(fp,"  ");
 
         // Check if this is a standard string or a replacement variable
         if ( string != NameList::_signal ) {
           // Normal string
           // Pass through to st->print
-          fprintf(fp,"st->print(\"%s\");\n", string);
+          fprintf(fp,"  st->print(\"%s\");\n", string);
         } else {
           // Replacement variable
           const char *rep_var = oper._format->_rep_vars.iter();
@@ -529,7 +561,7 @@ void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_
           if ( op != NULL )   op->ext_format(fp, globals, idx);
 
           // Lookup the index position of the replacement variable
-          idx      = oper._components.operand_position_format(rep_var);
+          idx      = oper._components.operand_position_format(rep_var, &oper);
           if ( idx == -1 ) {
             fprintf(stderr,
                     "Using a name, %s, that isn't in match rule\n", rep_var);
@@ -640,10 +672,11 @@ void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &inst, bool for_c
   if( call_type != Form::invalid_type ) {
     switch( call_type ) {
     case Form::JAVA_DYNAMIC:
-      fprintf(fp,"    _method->print_short_name();\n");
+      fprintf(fp,"  _method->print_short_name(st);\n");
       break;
     case Form::JAVA_STATIC:
-      fprintf(fp,"    if( _method ) _method->print_short_name(st); else st->print(\" wrapper for: %%s\", _name);\n");
+      fprintf(fp,"  if( _method ) _method->print_short_name(st);\n");
+      fprintf(fp,"  else st->print(\" wrapper for: %%s\", _name);\n");
       fprintf(fp,"  if( !_method ) dump_trap_args(st);\n");
       break;
     case Form::JAVA_COMPILED:
@@ -655,18 +688,18 @@ void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &inst, bool for_c
       fprintf(fp,"  st->print(\" %%s\", _name);");
       break;
     default:
-      assert(0,"ShouldNotReacHere");
+      assert(0,"ShouldNotReachHere");
     }
     fprintf(fp,  "  st->print_cr(\"\");\n" );
     fprintf(fp,  "  if (_jvms) _jvms->format(ra, this, st); else st->print_cr(\"        No JVM State Info\");\n" );
     fprintf(fp,  "  st->print(\"        # \");\n" );
-    fprintf(fp,  "    if( _jvms ) _oop_map->print_on(st);\n");
+    fprintf(fp,  "  if( _jvms && _oop_map ) _oop_map->print_on(st);\n");
   }
   else if(inst.is_ideal_safepoint()) {
     fprintf(fp,  "  st->print(\"\");\n" );
     fprintf(fp,  "  if (_jvms) _jvms->format(ra, this, st); else st->print_cr(\"        No JVM State Info\");\n" );
     fprintf(fp,  "  st->print(\"        # \");\n" );
-    fprintf(fp,  "    if( _jvms ) _oop_map->print_on(st);\n");
+    fprintf(fp,  "  if( _jvms && _oop_map ) _oop_map->print_on(st);\n");
   }
   else if( inst.is_ideal_if() ) {
     fprintf(fp,  "  st->print(\"  P=%%f C=%%f\",_prob,_fcnt);\n" );
@@ -675,7 +708,7 @@ void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &inst, bool for_c
     // Print out the field name if available to improve readability
     fprintf(fp,  "  if (ra->C->alias_type(adr_type())->field() != NULL) {\n");
     fprintf(fp,  "    ciField* f = ra->C->alias_type(adr_type())->field();\n");
-    fprintf(fp,  "      st->print(\" ! Field: \");\n");
+    fprintf(fp,  "    st->print(\" %s Field: \");\n", commentSeperator);
     fprintf(fp,  "    if (f->is_volatile())\n");
     fprintf(fp,  "      st->print(\"volatile \");\n");
     fprintf(fp,  "    f->holder()->name()->print_symbol_on(st);\n");
@@ -683,21 +716,15 @@ void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &inst, bool for_c
     fprintf(fp,  "    f->name()->print_symbol_on(st);\n");
     fprintf(fp,  "    if (f->is_constant())\n");
     fprintf(fp,  "      st->print(\" (constant)\");\n");
-    fprintf(fp,  "    } else\n");
+    fprintf(fp,  "  } else {\n");
     // Make sure 'Volatile' gets printed out
     fprintf(fp,  "    if (ra->C->alias_type(adr_type())->is_volatile())\n");
     fprintf(fp,  "      st->print(\" volatile!\");\n");
+    fprintf(fp,  "  }\n");
   }
 
   // Complete the definition of the format function
-  fprintf(fp, "  }\n#endif\n");
+  fprintf(fp, "}\n#endif\n");
-}
-
-static bool is_non_constant(char* x) {
-  // Tells whether the string (part of an operator interface) is non-constant.
-  // Simply detect whether there is an occurrence of a formal parameter,
-  // which will always begin with '$'.
-  return strchr(x, '$') == 0;
 }
 
 void ArchDesc::declare_pipe_classes(FILE *fp_hpp) {
@@ -1089,7 +1116,7 @@ void ArchDesc::declare_pipe_classes(FILE *fp_hpp) {
   fprintf(fp_hpp, "  static void initialize_nops(MachNode *nop_list[%d], Compile* C);\n\n",
     _pipeline->_nopcnt);
   fprintf(fp_hpp, "#ifndef PRODUCT\n");
-  fprintf(fp_hpp, "  void dump() const;\n");
+  fprintf(fp_hpp, "  void dump(outputStream *st = tty) const;\n");
   fprintf(fp_hpp, "#endif\n");
   fprintf(fp_hpp, "};\n\n");
 
@@ -1239,7 +1266,7 @@ void ArchDesc::declareClasses(FILE *fp) {
       if( type != NULL ) {
         Form::DataType data_type = oper->is_base_constant(_globalNames);
         // Check if we are an ideal pointer type
-        if( data_type == Form::idealP || data_type == Form::idealN ) {
+        if( data_type == Form::idealP || data_type == Form::idealN || data_type == Form::idealNKlass ) {
           // Return the ideal type we already have: <TypePtr *>
           fprintf(fp," return _c0;");
         } else {
@@ -1377,6 +1404,16 @@ void ArchDesc::declareClasses(FILE *fp) {
           fprintf(fp,   " return _c0->get_ptrtype()->reloc();");
           fprintf(fp, " }\n");
         }
+        else if (!strcmp(oper->ideal_type(_globalNames), "ConNKlass")) {
+          // Access the locally stored constant
+          fprintf(fp,"  virtual intptr_t       constant() const {");
+          fprintf(fp,   " return _c0->get_ptrtype()->get_con();");
+          fprintf(fp, " }\n");
+          // Generate query to determine if this pointer is an oop
+          fprintf(fp,"  virtual relocInfo::relocType           constant_reloc() const {");
+          fprintf(fp,   " return _c0->get_ptrtype()->reloc();");
+          fprintf(fp, " }\n");
+        }
         else if (!strcmp(oper->ideal_type(_globalNames), "ConL")) {
           fprintf(fp,"  virtual intptr_t       constant() const {");
           // We don't support addressing modes with > 4Gig offsets.
@@ -1503,12 +1540,19 @@ void ArchDesc::declareClasses(FILE *fp) {
       fprintf(fp, "  GrowableArray<Label*> _index2label;\n");
     }
     fprintf(fp,"public:\n");
-    fprintf(fp,"  MachOper *opnd_array(uint operand_index) const { assert(operand_index < _num_opnds, \"invalid _opnd_array index\"); return _opnd_array[operand_index]; }\n");
+    fprintf(fp,"  MachOper *opnd_array(uint operand_index) const {\n");
-    fprintf(fp,"  void      set_opnd_array(uint operand_index, MachOper *operand) { assert(operand_index < _num_opnds, \"invalid _opnd_array index\"); _opnd_array[operand_index] = operand; }\n");
+    fprintf(fp,"    assert(operand_index < _num_opnds, \"invalid _opnd_array index\");\n");
+    fprintf(fp,"    return _opnd_array[operand_index];\n");
+    fprintf(fp,"  }\n");
+    fprintf(fp,"  void      set_opnd_array(uint operand_index, MachOper *operand) {\n");
+    fprintf(fp,"    assert(operand_index < _num_opnds, \"invalid _opnd_array index\");\n");
+    fprintf(fp,"    _opnd_array[operand_index] = operand;\n");
+    fprintf(fp,"  }\n");
     fprintf(fp,"private:\n");
     if ( instr->is_ideal_jump() ) {
       fprintf(fp,"  virtual void           add_case_label(int index_num, Label* blockLabel) {\n");
-      fprintf(fp,"                                          _index2label.at_put_grow(index_num, blockLabel);}\n");
+      fprintf(fp,"    _index2label.at_put_grow(index_num, blockLabel);\n");
+      fprintf(fp,"  }\n");
     }
     if( can_cisc_spill() && (instr->cisc_spill_alternate() != NULL) ) {
       fprintf(fp,"  const RegMask  *_cisc_RegMask;\n");
@@ -1803,13 +1847,14 @@ void ArchDesc::declareClasses(FILE *fp) {
       // as is done for pointers
       //
       // Construct appropriate constant type containing the constant value.
-      fprintf(fp,"  virtual const class Type *bottom_type() const{\n");
+      fprintf(fp,"  virtual const class Type *bottom_type() const {\n");
       switch( data_type ) {
       case Form::idealI:
         fprintf(fp,"    return  TypeInt::make(opnd_array(1)->constant());\n");
         break;
       case Form::idealP:
       case Form::idealN:
+      case Form::idealNKlass:
         fprintf(fp,"    return  opnd_array(1)->type();\n");
         break;
       case Form::idealD:
@@ -1833,7 +1878,7 @@ void ArchDesc::declareClasses(FILE *fp) {
       // !!!!! !!!!!
       // Provide explicit bottom type for conversions to int
       // On Intel the result operand is a stackSlot, untyped.
-      fprintf(fp,"  virtual const class Type *bottom_type() const{");
+      fprintf(fp,"  virtual const class Type *bottom_type() const {");
       fprintf(fp,   " return  TypeInt::INT;");
       fprintf(fp, " };\n");
     }*/
@@ -1854,7 +1899,7 @@ void ArchDesc::declareClasses(FILE *fp) {
       // BoxNode provides the address of a stack slot.
       // Define its bottom type to be TypeRawPtr::BOTTOM instead of TypePtr::BOTTOM
       // This prevent s insert_anti_dependencies from complaining. It will
-      // complain if it see that the pointer base is TypePtr::BOTTOM since
+      // complain if it sees that the pointer base is TypePtr::BOTTOM since
       // it doesn't understand what that might alias.
       fprintf(fp,"  const Type            *bottom_type() const { return TypeRawPtr::BOTTOM; } // Box?\n");
     }
@@ -2017,7 +2062,7 @@ void ArchDesc::defineStateClass(FILE *fp) {
 class OutputMachOperands : public OutputMap {
 public:
   OutputMachOperands(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD) {};
+    : OutputMap(hpp, cpp, globals, AD, "MachOperands") {};
 
   void declaration() { }
   void definition()  { fprintf(_cpp, "enum MachOperands {\n"); }
@@ -2052,7 +2097,7 @@ class OutputMachOpcodes : public OutputMap {
   int end_instructions;
 public:
   OutputMachOpcodes(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
-    : OutputMap(hpp, cpp, globals, AD),
+    : OutputMap(hpp, cpp, globals, AD, "MachOpcodes"),
       begin_inst_chain_rule(-1), end_inst_chain_rule(-1), end_instructions(-1)
   {};
 

hotspot/src/share/vm/c1/c1_Compilation.cpp

@@ -32,6 +32,7 @@
 #include "c1/c1_ValueMap.hpp"
 #include "c1/c1_ValueStack.hpp"
 #include "code/debugInfoRec.hpp"
+#include "compiler/compileLog.hpp"
 
 
 typedef enum {
@@ -67,10 +68,25 @@ static int totalInstructionNodes = 0;
 class PhaseTraceTime: public TraceTime {
  private:
   JavaThread* _thread;
+  CompileLog* _log;
 
  public:
-  PhaseTraceTime(TimerName timer):
+  PhaseTraceTime(TimerName timer)
-    TraceTime("", &timers[timer], CITime || CITimeEach, Verbose) {
+  : TraceTime("", &timers[timer], CITime || CITimeEach, Verbose), _log(NULL) {
+    if (Compilation::current() != NULL) {
+      _log = Compilation::current()->log();
+    }
+
+    if (_log != NULL) {
+      _log->begin_head("phase name='%s'", timer_name[timer]);
+      _log->stamp();
+      _log->end_head();
+    }
+  }
+
+  ~PhaseTraceTime() {
+    if (_log != NULL)
+      _log->done("phase");
   }
 };
 
@@ -390,6 +406,10 @@ void Compilation::compile_method() {
     PhaseTraceTime timeit(_t_codeinstall);
     install_code(frame_size);
   }
+
+  if (log() != NULL) // Print code cache state into compiler log
+    log()->code_cache_state();
+
   totalInstructionNodes += Instruction::number_of_instructions();
 }
 
@@ -456,6 +476,7 @@ Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* metho
                          int osr_bci, BufferBlob* buffer_blob)
 : _compiler(compiler)
 , _env(env)
+, _log(env->log())
 , _method(method)
 , _osr_bci(osr_bci)
 , _hir(NULL)

hotspot/src/share/vm/c1/c1_Compilation.hpp

@@ -66,6 +66,7 @@ class Compilation: public StackObj {
   int _next_block_id;
   AbstractCompiler*  _compiler;
   ciEnv*             _env;
+  CompileLog*        _log;
   ciMethod*          _method;
   int                _osr_bci;
   IR*                _hir;
@@ -123,6 +124,7 @@ class Compilation: public StackObj {
 
   // accessors
   ciEnv* env() const                             { return _env; }
+  CompileLog* log() const                        { return _log; }
   AbstractCompiler* compiler() const             { return _compiler; }
   bool has_exception_handlers() const            { return _has_exception_handlers; }
   bool has_fpu_code() const                      { return _has_fpu_code; }

hotspot/src/share/vm/c1/c1_GraphBuilder.cpp

@@ -1682,6 +1682,12 @@ void GraphBuilder::invoke(Bytecodes::Code code) {
   ciInstanceKlass* callee_holder = ciEnv::get_instance_klass_for_declared_method_holder(holder);
   ciInstanceKlass* actual_recv = callee_holder;
 
+  CompileLog* log = compilation()->log();
+  if (log != NULL)
+      log->elem("call method='%d' instr='%s'",
+                log->identify(target),
+                Bytecodes::name(code));
+
   // Some methods are obviously bindable without any type checks so
   // convert them directly to an invokespecial or invokestatic.
   if (target->is_loaded() && !target->is_abstract() && target->can_be_statically_bound()) {
@@ -1826,6 +1832,7 @@ void GraphBuilder::invoke(Bytecodes::Code code) {
     }
     code = Bytecodes::_invokespecial;
   }
+
   // check if we could do inlining
   if (!PatchALot && Inline && klass->is_loaded() &&
       (klass->is_initialized() || klass->is_interface() && target->holder()->is_initialized())
@@ -2448,6 +2455,7 @@ BlockEnd* GraphBuilder::iterate_bytecodes_for_block(int bci) {
 #endif
   _skip_block = false;
   assert(state() != NULL, "ValueStack missing!");
+  CompileLog* log = compilation()->log();
   ciBytecodeStream s(method());
   s.reset_to_bci(bci);
   int prev_bci = bci;
@@ -2466,6 +2474,9 @@ BlockEnd* GraphBuilder::iterate_bytecodes_for_block(int bci) {
          (block_at(s.cur_bci()) == NULL || block_at(s.cur_bci()) == block())) {
     assert(state()->kind() == ValueStack::Parsing, "invalid state kind");
 
+    if (log != NULL)
+      log->set_context("bc code='%d' bci='%d'", (int)code, s.cur_bci());
+
     // Check for active jsr during OSR compilation
     if (compilation()->is_osr_compile()
         && scope()->is_top_scope()
@@ -2686,8 +2697,13 @@ BlockEnd* GraphBuilder::iterate_bytecodes_for_block(int bci) {
       case Bytecodes::_breakpoint     : BAILOUT_("concurrent setting of breakpoint", NULL);
       default                         : ShouldNotReachHere(); break;
     }
+
+    if (log != NULL)
+      log->clear_context(); // skip marker if nothing was printed
+
     // save current bci to setup Goto at the end
     prev_bci = s.cur_bci();
+
   }
   CHECK_BAILOUT_(NULL);
   // stop processing of this block (see try_inline_full)
@@ -3667,7 +3683,7 @@ bool GraphBuilder::try_inline_full(ciMethod* callee, bool holder_known, Bytecode
       INLINE_BAILOUT("total inlining greater than DesiredMethodLimit");
     }
     // printing
-    print_inlining(callee, "");
+    print_inlining(callee);
   }
 
   // NOTE: Bailouts from this point on, which occur at the
@@ -4133,8 +4149,19 @@ void GraphBuilder::append_unsafe_CAS(ciMethod* callee) {
 
 
 void GraphBuilder::print_inlining(ciMethod* callee, const char* msg, bool success) {
+  CompileLog* log = compilation()->log();
+  if (log != NULL) {
+    if (success) {
+      if (msg != NULL)
+        log->inline_success(msg);
+      else
+        log->inline_success("receiver is statically known");
+    } else {
+      log->inline_fail(msg);
+    }
+  }
+
   if (!PrintInlining)  return;
-  assert(msg != NULL, "must be");
   CompileTask::print_inlining(callee, scope()->level(), bci(), msg);
   if (success && CIPrintMethodCodes) {
     callee->print_codes();

hotspot/src/share/vm/c1/c1_GraphBuilder.hpp

@@ -31,6 +31,7 @@
 #include "c1/c1_ValueStack.hpp"
 #include "ci/ciMethodData.hpp"
 #include "ci/ciStreams.hpp"
+#include "compiler/compileLog.hpp"
 
 class MemoryBuffer;
 
@@ -369,7 +370,7 @@ class GraphBuilder VALUE_OBJ_CLASS_SPEC {
   void append_unsafe_CAS(ciMethod* callee);
   bool append_unsafe_get_and_set_obj(ciMethod* callee, bool is_add);
 
-  void print_inlining(ciMethod* callee, const char* msg, bool success = true);
+  void print_inlining(ciMethod* callee, const char* msg = NULL, bool success = true);
 
   void profile_call(ciMethod* callee, Value recv, ciKlass* predicted_holder);
   void profile_invocation(ciMethod* inlinee, ValueStack* state);

hotspot/src/share/vm/c1/c1_LIRGenerator.cpp

@@ -1286,7 +1286,7 @@ void LIRGenerator::do_getClass(Intrinsic* x) {
   if (x->needs_null_check()) {
     info = state_for(x);
   }
-  __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), UseCompressedKlassPointers ? T_OBJECT : T_ADDRESS), result, info);
+  __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), result, info);
   __ move_wide(new LIR_Address(result, in_bytes(Klass::java_mirror_offset()), T_OBJECT), result);
 }
 

hotspot/src/share/vm/c1/c1_Optimizer.cpp

@@ -29,6 +29,7 @@
 #include "c1/c1_ValueSet.hpp"
 #include "c1/c1_ValueStack.hpp"
 #include "utilities/bitMap.inline.hpp"
+#include "compiler/compileLog.hpp"
 
 define_array(ValueSetArray, ValueSet*);
 define_stack(ValueSetList, ValueSetArray);
@@ -54,7 +55,18 @@ class CE_Eliminator: public BlockClosure {
       // substituted some ifops/phis, so resolve the substitution
       SubstitutionResolver sr(_hir);
     }
+
+    CompileLog* log = _hir->compilation()->log();
+    if (log != NULL)
+      log->set_context("optimize name='cee'");
   }
+
+  ~CE_Eliminator() {
+    CompileLog* log = _hir->compilation()->log();
+    if (log != NULL)
+      log->clear_context(); // skip marker if nothing was printed
+  }
+
   int cee_count() const                          { return _cee_count; }
   int ifop_count() const                         { return _ifop_count; }
 
@@ -306,6 +318,15 @@ class BlockMerger: public BlockClosure {
   , _merge_count(0)
   {
     _hir->iterate_preorder(this);
+    CompileLog* log = _hir->compilation()->log();
+    if (log != NULL)
+      log->set_context("optimize name='eliminate_blocks'");
+  }
+
+  ~BlockMerger() {
+    CompileLog* log = _hir->compilation()->log();
+    if (log != NULL)
+      log->clear_context(); // skip marker if nothing was printed
   }
 
   bool try_merge(BlockBegin* block) {
@@ -574,6 +595,15 @@ class NullCheckEliminator: public ValueVisitor {
     , _work_list(new BlockList()) {
     _visitable_instructions = new ValueSet();
     _visitor.set_eliminator(this);
+    CompileLog* log = _opt->ir()->compilation()->log();
+    if (log != NULL)
+      log->set_context("optimize name='null_check_elimination'");
+  }
+
+  ~NullCheckEliminator() {
+    CompileLog* log = _opt->ir()->compilation()->log();
+    if (log != NULL)
+      log->clear_context(); // skip marker if nothing was printed
   }
 
   Optimizer*  opt()                               { return _opt; }

hotspot/src/share/vm/ci/ciEnv.cpp

@@ -1126,7 +1126,8 @@ void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
       if (all_tiers) {
         log()->elem("method_not_compilable");
       } else {
-        log()->elem("method_not_compilable_at_tier");
+        log()->elem("method_not_compilable_at_tier level='%d'",
+                    current()->task()->comp_level());
       }
     }
     _compilable = new_compilable;

hotspot/src/share/vm/ci/ciObjectFactory.cpp

@@ -146,7 +146,7 @@ void ciObjectFactory::init_shared_objects() {
 
   for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) {
     BasicType t = (BasicType)i;
-    if (type2name(t) != NULL && t != T_OBJECT && t != T_ARRAY && t != T_NARROWOOP) {
+    if (type2name(t) != NULL && t != T_OBJECT && t != T_ARRAY && t != T_NARROWOOP && t != T_NARROWKLASS) {
       ciType::_basic_types[t] = new (_arena) ciType(t);
       init_ident_of(ciType::_basic_types[t]);
     }

hotspot/src/share/vm/classfile/classFileParser.cpp

@@ -816,9 +816,6 @@ Array<Klass*>* ClassFileParser::parse_interfaces(constantPoolHandle cp,
                     unresolved_klass, class_loader, protection_domain,
                     false, CHECK_NULL);
       interf = KlassHandle(THREAD, k);
-
-      if (LinkWellKnownClasses)  // my super type is well known to me
-        cp->klass_at_put(interface_index, interf()); // eagerly resolve
     }
 
     if (!Klass::cast(interf())->is_interface()) {
@@ -1020,9 +1017,10 @@ static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = {
   NONSTATIC_OOP,       // T_ARRAY       = 13,
   BAD_ALLOCATION_TYPE, // T_VOID        = 14,
   BAD_ALLOCATION_TYPE, // T_ADDRESS     = 15,
-  BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16,
+  BAD_ALLOCATION_TYPE, // T_NARROWOOP   = 16,
   BAD_ALLOCATION_TYPE, // T_METADATA    = 17,
-  BAD_ALLOCATION_TYPE, // T_CONFLICT = 18,
+  BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18,
+  BAD_ALLOCATION_TYPE, // T_CONFLICT    = 19,
   BAD_ALLOCATION_TYPE, // 0
   BAD_ALLOCATION_TYPE, // 1
   BAD_ALLOCATION_TYPE, // 2
@@ -1039,9 +1037,10 @@ static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = {
   STATIC_OOP,          // T_ARRAY       = 13,
   BAD_ALLOCATION_TYPE, // T_VOID        = 14,
   BAD_ALLOCATION_TYPE, // T_ADDRESS     = 15,
-  BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16,
+  BAD_ALLOCATION_TYPE, // T_NARROWOOP   = 16,
   BAD_ALLOCATION_TYPE, // T_METADATA    = 17,
-  BAD_ALLOCATION_TYPE, // T_CONFLICT = 18,
+  BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18,
+  BAD_ALLOCATION_TYPE, // T_CONFLICT    = 19,
 };
 
 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) {
@@ -3192,8 +3191,6 @@ instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name,
 
       KlassHandle kh (THREAD, k);
       super_klass = instanceKlassHandle(THREAD, kh());
-      if (LinkWellKnownClasses)  // my super class is well known to me
-        cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve
     }
     if (super_klass.not_null()) {
       if (super_klass->is_interface()) {
@@ -3639,7 +3636,7 @@ instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name,
     // has to be changed accordingly.
     this_klass->set_initial_method_idnum(methods->length());
     this_klass->set_name(cp->klass_name_at(this_class_index));
-    if (LinkWellKnownClasses || is_anonymous())  // I am well known to myself
+    if (is_anonymous())  // I am well known to myself
       cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve
 
     if (fields_annotations != NULL ||

hotspot/src/share/vm/classfile/classFileParser.hpp

@@ -344,7 +344,7 @@ class ClassFileParser VALUE_OBJ_CLASS_SPEC {
   // constant pool construction, but in later versions they can.
   // %%% Let's phase out the old is_klass_reference.
   bool is_klass_reference(constantPoolHandle cp, int index) {
-    return ((LinkWellKnownClasses || EnableInvokeDynamic)
+    return (EnableInvokeDynamic
             ? cp->tag_at(index).is_klass_or_reference()
             : cp->tag_at(index).is_klass_reference());
   }

hotspot/src/share/vm/classfile/systemDictionary.cpp

@@ -291,16 +291,6 @@ Klass* SystemDictionary::resolve_super_or_fail(Symbol* child_name,
                                                  Handle protection_domain,
                                                  bool is_superclass,
                                                  TRAPS) {
-
-  // Try to get one of the well-known klasses.
-  // They are trusted, and do not participate in circularities.
-  if (LinkWellKnownClasses) {
-    Klass* k = find_well_known_klass(class_name);
-    if (k != NULL) {
-      return k;
-    }
-  }
-
   // Double-check, if child class is already loaded, just return super-class,interface
   // Don't add a placedholder if already loaded, i.e. already in system dictionary
   // Make sure there's a placeholder for the *child* before resolving.
@@ -926,14 +916,6 @@ Klass* SystemDictionary::find_instance_or_array_klass(Symbol* class_name,
   Klass* k = NULL;
   assert(class_name != NULL, "class name must be non NULL");
 
-  // Try to get one of the well-known klasses.
-  if (LinkWellKnownClasses) {
-    k = find_well_known_klass(class_name);
-    if (k != NULL) {
-      return k;
-    }
-  }
-
   if (FieldType::is_array(class_name)) {
     // The name refers to an array.  Parse the name.
     // dimension and object_key in FieldArrayInfo are assigned as a
@@ -954,38 +936,6 @@ Klass* SystemDictionary::find_instance_or_array_klass(Symbol* class_name,
   return k;
 }
 
-// Quick range check for names of well-known classes:
-static Symbol* wk_klass_name_limits[2] = {NULL, NULL};
-
-#ifndef PRODUCT
-static int find_wkk_calls, find_wkk_probes, find_wkk_wins;
-// counts for "hello world": 3983, 1616, 1075
-//  => 60% hit after limit guard, 25% total win rate
-#endif
-
-Klass* SystemDictionary::find_well_known_klass(Symbol* class_name) {
-  // A bounds-check on class_name will quickly get a negative result.
-  NOT_PRODUCT(find_wkk_calls++);
-  if (class_name >= wk_klass_name_limits[0] &&
-      class_name <= wk_klass_name_limits[1]) {
-    NOT_PRODUCT(find_wkk_probes++);
-    vmSymbols::SID sid = vmSymbols::find_sid(class_name);
-    if (sid != vmSymbols::NO_SID) {
-      Klass* k = NULL;
-      switch (sid) {
-        #define WK_KLASS_CASE(name, symbol, ignore_option) \
-        case vmSymbols::VM_SYMBOL_ENUM_NAME(symbol): \
-          k = WK_KLASS(name); break;
-        WK_KLASSES_DO(WK_KLASS_CASE)
-        #undef WK_KLASS_CASE
-      }
-      NOT_PRODUCT(if (k != NULL)  find_wkk_wins++);
-      return k;
-    }
-  }
-  return NULL;
-}
-
 // Note: this method is much like resolve_from_stream, but
 // updates no supplemental data structures.
 // TODO consolidate the two methods with a helper routine?
@@ -1939,23 +1889,12 @@ void SystemDictionary::initialize_wk_klasses_until(WKID limit_id, WKID &start_id
     int opt  = (info & right_n_bits(CEIL_LG_OPTION_LIMIT));
 
     initialize_wk_klass((WKID)id, opt, CHECK);
-
-    // Update limits, so find_well_known_klass can be very fast:
-    Symbol* s = vmSymbols::symbol_at((vmSymbols::SID)sid);
-    if (wk_klass_name_limits[1] == NULL) {
-      wk_klass_name_limits[0] = wk_klass_name_limits[1] = s;
-    } else if (wk_klass_name_limits[1] < s) {
-      wk_klass_name_limits[1] = s;
-    } else if (wk_klass_name_limits[0] > s) {
-      wk_klass_name_limits[0] = s;
-    }
   }
 
   // move the starting value forward to the limit:
   start_id = limit_id;
 }
 
-
 void SystemDictionary::initialize_preloaded_classes(TRAPS) {
   assert(WK_KLASS(Object_klass) == NULL, "preloaded classes should only be initialized once");
   // Preload commonly used klasses

hotspot/src/share/vm/classfile/systemDictionary.hpp

@@ -92,93 +92,93 @@ class SymbolPropertyTable;
 // The order of these definitions is significant; it is the order in which
 // preloading is actually performed by initialize_preloaded_classes.
 
-#define WK_KLASSES_DO(template)                                               \
+#define WK_KLASSES_DO(do_klass)                                                                                          \
   /* well-known classes */                                                                                               \
-  template(Object_klass,                 java_lang_Object,               Pre) \
+  do_klass(Object_klass,                                java_lang_Object,                          Pre                 ) \
-  template(String_klass,                 java_lang_String,               Pre) \
+  do_klass(String_klass,                                java_lang_String,                          Pre                 ) \
-  template(Class_klass,                  java_lang_Class,                Pre) \
+  do_klass(Class_klass,                                 java_lang_Class,                           Pre                 ) \
-  template(Cloneable_klass,              java_lang_Cloneable,            Pre) \
+  do_klass(Cloneable_klass,                             java_lang_Cloneable,                       Pre                 ) \
-  template(ClassLoader_klass,            java_lang_ClassLoader,          Pre) \
+  do_klass(ClassLoader_klass,                           java_lang_ClassLoader,                     Pre                 ) \
-  template(Serializable_klass,           java_io_Serializable,           Pre) \
+  do_klass(Serializable_klass,                          java_io_Serializable,                      Pre                 ) \
-  template(System_klass,                 java_lang_System,               Pre) \
+  do_klass(System_klass,                                java_lang_System,                          Pre                 ) \
-  template(Throwable_klass,              java_lang_Throwable,            Pre) \
+  do_klass(Throwable_klass,                             java_lang_Throwable,                       Pre                 ) \
-  template(Error_klass,                  java_lang_Error,                Pre) \
+  do_klass(Error_klass,                                 java_lang_Error,                           Pre                 ) \
-  template(ThreadDeath_klass,            java_lang_ThreadDeath,          Pre) \
+  do_klass(ThreadDeath_klass,                           java_lang_ThreadDeath,                     Pre                 ) \
-  template(Exception_klass,              java_lang_Exception,            Pre) \
+  do_klass(Exception_klass,                             java_lang_Exception,                       Pre                 ) \
-  template(RuntimeException_klass,       java_lang_RuntimeException,     Pre) \
+  do_klass(RuntimeException_klass,                      java_lang_RuntimeException,                Pre                 ) \
-  template(ProtectionDomain_klass,       java_security_ProtectionDomain, Pre) \
+  do_klass(ProtectionDomain_klass,                      java_security_ProtectionDomain,            Pre                 ) \
-  template(AccessControlContext_klass,   java_security_AccessControlContext, Pre) \
+  do_klass(AccessControlContext_klass,                  java_security_AccessControlContext,        Pre                 ) \
-  template(ClassNotFoundException_klass, java_lang_ClassNotFoundException, Pre) \
+  do_klass(ClassNotFoundException_klass,                java_lang_ClassNotFoundException,          Pre                 ) \
-  template(NoClassDefFoundError_klass,   java_lang_NoClassDefFoundError, Pre) \
+  do_klass(NoClassDefFoundError_klass,                  java_lang_NoClassDefFoundError,            Pre                 ) \
-  template(LinkageError_klass,           java_lang_LinkageError,         Pre) \
+  do_klass(LinkageError_klass,                          java_lang_LinkageError,                    Pre                 ) \
-  template(ClassCastException_klass,     java_lang_ClassCastException,   Pre) \
+  do_klass(ClassCastException_klass,                    java_lang_ClassCastException,              Pre                 ) \
-  template(ArrayStoreException_klass,    java_lang_ArrayStoreException,  Pre) \
+  do_klass(ArrayStoreException_klass,                   java_lang_ArrayStoreException,             Pre                 ) \
-  template(VirtualMachineError_klass,    java_lang_VirtualMachineError,  Pre) \
+  do_klass(VirtualMachineError_klass,                   java_lang_VirtualMachineError,             Pre                 ) \
-  template(OutOfMemoryError_klass,       java_lang_OutOfMemoryError,     Pre) \
+  do_klass(OutOfMemoryError_klass,                      java_lang_OutOfMemoryError,                Pre                 ) \
-  template(StackOverflowError_klass,     java_lang_StackOverflowError,   Pre) \
+  do_klass(StackOverflowError_klass,                    java_lang_StackOverflowError,              Pre                 ) \
-  template(IllegalMonitorStateException_klass, java_lang_IllegalMonitorStateException, Pre) \
+  do_klass(IllegalMonitorStateException_klass,          java_lang_IllegalMonitorStateException,    Pre                 ) \
-  template(Reference_klass,              java_lang_ref_Reference,        Pre) \
+  do_klass(Reference_klass,                             java_lang_ref_Reference,                   Pre                 ) \
                                                                                                                          \
   /* Preload ref klasses and set reference types */                                                                      \
-  template(SoftReference_klass,          java_lang_ref_SoftReference,    Pre) \
+  do_klass(SoftReference_klass,                         java_lang_ref_SoftReference,               Pre                 ) \
-  template(WeakReference_klass,          java_lang_ref_WeakReference,    Pre) \
+  do_klass(WeakReference_klass,                         java_lang_ref_WeakReference,               Pre                 ) \
-  template(FinalReference_klass,         java_lang_ref_FinalReference,   Pre) \
+  do_klass(FinalReference_klass,                        java_lang_ref_FinalReference,              Pre                 ) \
-  template(PhantomReference_klass,       java_lang_ref_PhantomReference, Pre) \
+  do_klass(PhantomReference_klass,                      java_lang_ref_PhantomReference,            Pre                 ) \
-  template(Finalizer_klass,              java_lang_ref_Finalizer,        Pre) \
+  do_klass(Finalizer_klass,                             java_lang_ref_Finalizer,                   Pre                 ) \
                                                                                                                          \
-  template(Thread_klass,                 java_lang_Thread,               Pre) \
+  do_klass(Thread_klass,                                java_lang_Thread,                          Pre                 ) \
-  template(ThreadGroup_klass,            java_lang_ThreadGroup,          Pre) \
+  do_klass(ThreadGroup_klass,                           java_lang_ThreadGroup,                     Pre                 ) \
-  template(Properties_klass,             java_util_Properties,           Pre) \
+  do_klass(Properties_klass,                            java_util_Properties,                      Pre                 ) \
-  template(reflect_AccessibleObject_klass, java_lang_reflect_AccessibleObject, Pre) \
+  do_klass(reflect_AccessibleObject_klass,              java_lang_reflect_AccessibleObject,        Pre                 ) \
-  template(reflect_Field_klass,          java_lang_reflect_Field,        Pre) \
+  do_klass(reflect_Field_klass,                         java_lang_reflect_Field,                   Pre                 ) \
-  template(reflect_Method_klass,         java_lang_reflect_Method,       Pre) \
+  do_klass(reflect_Method_klass,                        java_lang_reflect_Method,                  Pre                 ) \
-  template(reflect_Constructor_klass,    java_lang_reflect_Constructor,  Pre) \
+  do_klass(reflect_Constructor_klass,                   java_lang_reflect_Constructor,             Pre                 ) \
                                                                                                                          \
   /* NOTE: needed too early in bootstrapping process to have checks based on JDK version */                              \
   /* Universe::is_gte_jdk14x_version() is not set up by this point. */                                                   \
   /* It's okay if this turns out to be NULL in non-1.4 JDKs. */                                                          \
-  template(reflect_MagicAccessorImpl_klass,             sun_reflect_MagicAccessorImpl,             Opt)                  \
+  do_klass(reflect_MagicAccessorImpl_klass,             sun_reflect_MagicAccessorImpl,             Opt                 ) \
-  template(reflect_MethodAccessorImpl_klass,            sun_reflect_MethodAccessorImpl,            Opt_Only_JDK14NewRef) \
+  do_klass(reflect_MethodAccessorImpl_klass,            sun_reflect_MethodAccessorImpl,            Opt_Only_JDK14NewRef) \
-  template(reflect_ConstructorAccessorImpl_klass,       sun_reflect_ConstructorAccessorImpl,       Opt_Only_JDK14NewRef) \
+  do_klass(reflect_ConstructorAccessorImpl_klass,       sun_reflect_ConstructorAccessorImpl,       Opt_Only_JDK14NewRef) \
-  template(reflect_DelegatingClassLoader_klass,         sun_reflect_DelegatingClassLoader,         Opt)                  \
+  do_klass(reflect_DelegatingClassLoader_klass,         sun_reflect_DelegatingClassLoader,         Opt                 ) \
-  template(reflect_ConstantPool_klass,                  sun_reflect_ConstantPool,                  Opt_Only_JDK15)       \
+  do_klass(reflect_ConstantPool_klass,                  sun_reflect_ConstantPool,                  Opt_Only_JDK15      ) \
-  template(reflect_UnsafeStaticFieldAccessorImpl_klass, sun_reflect_UnsafeStaticFieldAccessorImpl, Opt_Only_JDK15)       \
+  do_klass(reflect_UnsafeStaticFieldAccessorImpl_klass, sun_reflect_UnsafeStaticFieldAccessorImpl, Opt_Only_JDK15      ) \
                                                                                                                          \
   /* support for dynamic typing; it's OK if these are NULL in earlier JDKs */                                            \
-  template(MethodHandle_klass,             java_lang_invoke_MethodHandle,             Pre_JSR292) \
+  do_klass(MethodHandle_klass,                          java_lang_invoke_MethodHandle,             Pre_JSR292          ) \
-  template(MemberName_klass,               java_lang_invoke_MemberName,               Pre_JSR292) \
+  do_klass(MemberName_klass,                            java_lang_invoke_MemberName,               Pre_JSR292          ) \
-  template(MethodHandleNatives_klass,      java_lang_invoke_MethodHandleNatives,      Pre_JSR292) \
+  do_klass(MethodHandleNatives_klass,                   java_lang_invoke_MethodHandleNatives,      Pre_JSR292          ) \
-  template(LambdaForm_klass,               java_lang_invoke_LambdaForm,               Opt)        \
+  do_klass(LambdaForm_klass,                            java_lang_invoke_LambdaForm,               Opt                 ) \
-  template(MethodType_klass,               java_lang_invoke_MethodType,               Pre_JSR292) \
+  do_klass(MethodType_klass,                            java_lang_invoke_MethodType,               Pre_JSR292          ) \
-  template(BootstrapMethodError_klass,     java_lang_BootstrapMethodError,            Pre_JSR292) \
+  do_klass(BootstrapMethodError_klass,                  java_lang_BootstrapMethodError,            Pre_JSR292          ) \
-  template(CallSite_klass,                 java_lang_invoke_CallSite,                 Pre_JSR292) \
+  do_klass(CallSite_klass,                              java_lang_invoke_CallSite,                 Pre_JSR292          ) \
-  template(ConstantCallSite_klass,         java_lang_invoke_ConstantCallSite,         Pre_JSR292) \
+  do_klass(ConstantCallSite_klass,                      java_lang_invoke_ConstantCallSite,         Pre_JSR292          ) \
-  template(MutableCallSite_klass,          java_lang_invoke_MutableCallSite,          Pre_JSR292) \
+  do_klass(MutableCallSite_klass,                       java_lang_invoke_MutableCallSite,          Pre_JSR292          ) \
-  template(VolatileCallSite_klass,         java_lang_invoke_VolatileCallSite,         Pre_JSR292) \
+  do_klass(VolatileCallSite_klass,                      java_lang_invoke_VolatileCallSite,         Pre_JSR292          ) \
   /* Note: MethodHandle must be first, and VolatileCallSite last in group */                                             \
                                                                                                                          \
-  template(StringBuffer_klass,           java_lang_StringBuffer,         Pre) \
+  do_klass(StringBuffer_klass,                          java_lang_StringBuffer,                    Pre                 ) \
-  template(StringBuilder_klass,          java_lang_StringBuilder,        Pre) \
+  do_klass(StringBuilder_klass,                         java_lang_StringBuilder,                   Pre                 ) \
                                                                                                                          \
   /* It's NULL in non-1.4 JDKs. */                                                                                       \
-  template(StackTraceElement_klass,      java_lang_StackTraceElement,    Opt) \
+  do_klass(StackTraceElement_klass,                     java_lang_StackTraceElement,               Opt                 ) \
   /* Universe::is_gte_jdk14x_version() is not set up by this point. */                                                   \
   /* It's okay if this turns out to be NULL in non-1.4 JDKs. */                                                          \
-  template(nio_Buffer_klass,             java_nio_Buffer,                Opt) \
+  do_klass(nio_Buffer_klass,                            java_nio_Buffer,                           Opt                 ) \
                                                                                                                          \
-  template(DownloadManager_klass,        sun_jkernel_DownloadManager, Opt_Kernel) \
+  do_klass(DownloadManager_klass,                       sun_jkernel_DownloadManager,               Opt_Kernel          ) \
                                                                                                                          \
-  template(PostVMInitHook_klass,         sun_misc_PostVMInitHook, Opt)        \
+  do_klass(PostVMInitHook_klass,                        sun_misc_PostVMInitHook,                   Opt                 ) \
                                                                                                                          \
   /* Preload boxing klasses */                                                                                           \
-  template(Boolean_klass,                java_lang_Boolean,              Pre) \
+  do_klass(Boolean_klass,                               java_lang_Boolean,                         Pre                 ) \
-  template(Character_klass,              java_lang_Character,            Pre) \
+  do_klass(Character_klass,                             java_lang_Character,                       Pre                 ) \
-  template(Float_klass,                  java_lang_Float,                Pre) \
+  do_klass(Float_klass,                                 java_lang_Float,                           Pre                 ) \
-  template(Double_klass,                 java_lang_Double,               Pre) \
+  do_klass(Double_klass,                                java_lang_Double,                          Pre                 ) \
-  template(Byte_klass,                   java_lang_Byte,                 Pre) \
+  do_klass(Byte_klass,                                  java_lang_Byte,                            Pre                 ) \
-  template(Short_klass,                  java_lang_Short,                Pre) \
+  do_klass(Short_klass,                                 java_lang_Short,                           Pre                 ) \
-  template(Integer_klass,                java_lang_Integer,              Pre) \
+  do_klass(Integer_klass,                               java_lang_Integer,                         Pre                 ) \
-  template(Long_klass,                   java_lang_Long,                 Pre) \
+  do_klass(Long_klass,                                  java_lang_Long,                            Pre                 ) \
   /*end*/
 
 
@@ -280,9 +280,6 @@ public:
                                                Handle protection_domain,
                                                TRAPS);
 
-  // If the given name is known to vmSymbols, return the well-know klass:
-  static Klass* find_well_known_klass(Symbol* class_name);
-
   // Lookup an instance or array class that has already been loaded
   // either into the given class loader, or else into another class
   // loader that is constrained (via loader constraints) to produce
@@ -392,9 +389,9 @@ public:
     return k;
   }
 
-  static Klass* check_klass_Pre(Klass* k) { return check_klass(k); }
+  static Klass* check_klass_Pre(       Klass* k) { return check_klass(k); }
   static Klass* check_klass_Pre_JSR292(Klass* k) { return EnableInvokeDynamic ? check_klass(k) : k; }
-  static Klass* check_klass_Opt(Klass* k) { return k; }
+  static Klass* check_klass_Opt(       Klass* k) { return k; }
   static Klass* check_klass_Opt_Kernel(Klass* k) { return k; } //== Opt
   static Klass* check_klass_Opt_Only_JDK15(Klass* k) {
     assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");

hotspot/src/share/vm/classfile/vmSymbols.cpp

@@ -324,24 +324,6 @@ vmIntrinsics::ID vmIntrinsics::for_raw_conversion(BasicType src, BasicType dest)
   return vmIntrinsics::_none;
 }
 
-Method* vmIntrinsics::method_for(vmIntrinsics::ID id) {
-  if (id == _none)  return NULL;
-  Symbol* cname = vmSymbols::symbol_at(class_for(id));
-  Symbol* mname = vmSymbols::symbol_at(name_for(id));
-  Symbol* msig  = vmSymbols::symbol_at(signature_for(id));
-  if (cname == NULL || mname == NULL || msig == NULL)  return NULL;
-  Klass* k = SystemDictionary::find_well_known_klass(cname);
-  if (k == NULL)  return NULL;
-  Method* m = InstanceKlass::cast(k)->find_method(mname, msig);
-  if (m == NULL &&
-      cname == vmSymbols::java_lang_invoke_MethodHandle() &&
-      msig == vmSymbols::star_name()) {
-    // Any signature polymorphic method is represented by a fixed concrete signature:
-    m = InstanceKlass::cast(k)->find_method(mname, vmSymbols::object_array_object_signature());
-  }
-  return m;
-}
-
 
 #define VM_INTRINSIC_INITIALIZE(id, klass, name, sig, flags) #id "\0"
 static const char* vm_intrinsic_name_bodies =

hotspot/src/share/vm/classfile/vmSymbols.hpp

@@ -1138,9 +1138,6 @@ public:
 
   static const char* short_name_as_C_string(ID id, char* buf, int size);
 
-  // Access to intrinsic methods:
-  static Method* method_for(ID id);
-
   // Wrapper object methods:
   static ID for_boxing(BasicType type);
   static ID for_unboxing(BasicType type);

hotspot/src/share/vm/code/dependencies.cpp

@@ -333,12 +333,14 @@ void Dependencies::encode_content_bytes() {
       for (int j = 0; j < stride; j++) {
         if (j == skipj)  continue;
         ciBaseObject* v = deps->at(i+j);
+        int idx;
         if (v->is_object()) {
-          bytes.write_int(_oop_recorder->find_index(v->as_object()->constant_encoding()));
+          idx = _oop_recorder->find_index(v->as_object()->constant_encoding());
         } else {
           ciMetadata* meta = v->as_metadata();
-          bytes.write_int(_oop_recorder->find_index(meta->constant_encoding()));
+          idx = _oop_recorder->find_index(meta->constant_encoding());
         }
+        bytes.write_int(idx);
       }
     }
   }
@@ -665,6 +667,14 @@ inline oop Dependencies::DepStream::recorded_oop_at(int i) {
 
 Metadata* Dependencies::DepStream::argument(int i) {
   Metadata* result = recorded_metadata_at(argument_index(i));
+
+  if (result == NULL) { // Explicit context argument can be compressed
+    int ctxkj = dep_context_arg(type());  // -1 if no explicit context arg
+    if (ctxkj >= 0 && i == ctxkj && ctxkj+1 < argument_count()) {
+      result = ctxk_encoded_as_null(type(), argument(ctxkj+1));
+    }
+  }
+
   assert(result == NULL || result->is_klass() || result->is_method(), "must be");
   return result;
 }
@@ -680,25 +690,21 @@ Klass* Dependencies::DepStream::context_type() {
 
   // Most dependencies have an explicit context type argument.
   {
-    int ctxkj = dep_context_arg(_type);  // -1 if no explicit context arg
+    int ctxkj = dep_context_arg(type());  // -1 if no explicit context arg
     if (ctxkj >= 0) {
       Metadata* k = argument(ctxkj);
-      if (k != NULL) {       // context type was not compressed away
+      assert(k != NULL && k->is_klass(), "type check");
-        assert(k->is_klass(), "type check");
+      return (Klass*)k;
-        return (Klass*) k;
-      }
-      // recompute "default" context type
-      return ctxk_encoded_as_null(_type, argument(ctxkj+1));
     }
   }
 
   // Some dependencies are using the klass of the first object
   // argument as implicit context type (e.g. call_site_target_value).
   {
-    int ctxkj = dep_implicit_context_arg(_type);
+    int ctxkj = dep_implicit_context_arg(type());
     if (ctxkj >= 0) {
       Klass* k = argument_oop(ctxkj)->klass();
-      assert(k->is_klass(), "type check");
+      assert(k != NULL && k->is_klass(), "type check");
       return (Klass*) k;
     }
   }

hotspot/src/share/vm/compiler/compileBroker.cpp

@@ -1570,7 +1570,8 @@ void CompileBroker::compiler_thread_loop() {
   }
   CompileLog* log = thread->log();
   if (log != NULL) {
-    log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
+    log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'",
+                    thread->name(),
                     os::current_thread_id(),
                     os::current_process_id());
     log->stamp();

hotspot/src/share/vm/compiler/compileLog.cpp

@@ -302,3 +302,48 @@ void CompileLog::finish_log(outputStream* file) {
   char buf[4 * K];
   finish_log_on_error(file, buf, sizeof(buf));
 }
+
+// ------------------------------------------------------------------
+// CompileLog::inline_success
+//
+// Print about successful method inlining.
+void CompileLog::inline_success(const char* reason) {
+  begin_elem("inline_success reason='");
+  text(reason);
+  end_elem("'");
+}
+
+// ------------------------------------------------------------------
+// CompileLog::inline_fail
+//
+// Print about failed method inlining.
+void CompileLog::inline_fail(const char* reason) {
+  begin_elem("inline_fail reason='");
+  text(reason);
+  end_elem("'");
+}
+
+// ------------------------------------------------------------------
+// CompileLog::set_context
+//
+// Set XML tag as an optional marker - it is printed only if
+// there are other entries after until it is reset.
+void CompileLog::set_context(const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  clear_context();
+  _context.print("<");
+  _context.vprint(format, ap);
+  _context.print_cr("/>");
+  va_end(ap);
+}
+
+// ------------------------------------------------------------------
+// CompileLog::code_cache_state
+//
+// Print code cache state.
+void CompileLog::code_cache_state() {
+  begin_elem("code_cache");
+  CodeCache::log_state(this);
+  end_elem("");
+}

hotspot/src/share/vm/compiler/compileLog.hpp

@@ -62,7 +62,13 @@ class CompileLog : public xmlStream {
 
   intx          thread_id()                      { return _thread_id; }
   const char*   file()                           { return _file; }
+
+  // Optional context marker, to help place actions that occur during
+  // parsing. If there is no log output until the next context string
+  // or reset, context string will be silently ignored
   stringStream* context()                        { return &_context; }
+  void    clear_context()                        { context()->reset(); }
+  void      set_context(const char* format, ...);
 
   void          name(ciSymbol* s);               // name='s'
   void          name(Symbol* s)                  { xmlStream::name(s); }
@@ -71,6 +77,9 @@ class CompileLog : public xmlStream {
   int           identify(ciBaseObject* obj);
   void          clear_identities();
 
+  void inline_fail   (const char* reason);
+  void inline_success(const char* reason);
+
   // virtuals
   virtual void see_tag(const char* tag, bool push);
   virtual void pop_tag(const char* tag);
@@ -78,6 +87,9 @@ class CompileLog : public xmlStream {
   // make a provisional end of log mark
   void mark_file_end() { _file_end = out()->count(); }
 
+  // Print code cache statistics
+  void code_cache_state();
+
   // copy all logs to the given stream
   static void finish_log(outputStream* out);
   static void finish_log_on_error(outputStream* out, char *buf, int buflen);

hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp

@@ -222,7 +222,7 @@ ConcurrentMarkSweepGeneration::ConcurrentMarkSweepGeneration(
   // depends on this property.
   debug_only(
     FreeChunk* junk = NULL;
-    assert(UseCompressedOops ||
+    assert(UseCompressedKlassPointers ||
            junk->prev_addr() == (void*)(oop(junk)->klass_addr()),
            "Offset of FreeChunk::_prev within FreeChunk must match"
            "  that of OopDesc::_klass within OopDesc");

hotspot/src/share/vm/memory/metaspace.hpp

@@ -135,6 +135,8 @@ class Metaspace : public CHeapObj<mtClass> {
   MetaWord* expand_and_allocate(size_t size,
                                 MetadataType mdtype);
 
+  static bool is_initialized() { return _class_space_list != NULL; }
+
 #ifndef PRODUCT
   bool contains(const void *ptr) const;
   bool contains_class(const void *ptr) const;

hotspot/src/share/vm/memory/universe.cpp

@@ -151,7 +151,9 @@ size_t          Universe::_heap_used_at_last_gc = 0;
 
 CollectedHeap*  Universe::_collectedHeap = NULL;
 
-NarrowOopStruct Universe::_narrow_oop = { NULL, 0, true };
+NarrowPtrStruct Universe::_narrow_oop = { NULL, 0, true };
+NarrowPtrStruct Universe::_narrow_klass = { NULL, 0, true };
+address Universe::_narrow_ptrs_base;
 
 
 void Universe::basic_type_classes_do(void f(Klass*)) {
@@ -807,7 +809,7 @@ jint Universe::initialize_heap() {
     }
     if ((uint64_t)Universe::heap()->reserved_region().end() > OopEncodingHeapMax) {
       // Can't reserve heap below 32Gb.
-      Universe::set_narrow_oop_base(Universe::heap()->base() - os::vm_page_size());
+      // keep the Universe::narrow_oop_base() set in Universe::reserve_heap()
       Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
       if (verbose) {
         tty->print(", Compressed Oops with base: "PTR_FORMAT, Universe::narrow_oop_base());
@@ -838,8 +840,16 @@ jint Universe::initialize_heap() {
       tty->cr();
       tty->cr();
     }
+    if (UseCompressedKlassPointers) {
+      Universe::set_narrow_klass_base(Universe::narrow_oop_base());
+      Universe::set_narrow_klass_shift(MIN2(Universe::narrow_oop_shift(), LogKlassAlignmentInBytes));
     }
-  assert(Universe::narrow_oop_base() == (Universe::heap()->base() - os::vm_page_size()) ||
+    Universe::set_narrow_ptrs_base(Universe::narrow_oop_base());
+  }
+  // Universe::narrow_oop_base() is one page below the metaspace
+  // base. The actual metaspace base depends on alignment constraints
+  // so we don't know its exact location here.
+  assert((intptr_t)Universe::narrow_oop_base() <= (intptr_t)(Universe::heap()->base() - os::vm_page_size() - ClassMetaspaceSize) ||
          Universe::narrow_oop_base() == NULL, "invalid value");
   assert(Universe::narrow_oop_shift() == LogMinObjAlignmentInBytes ||
          Universe::narrow_oop_shift() == 0, "invalid value");
@@ -861,7 +871,10 @@ jint Universe::initialize_heap() {
 ReservedSpace Universe::reserve_heap(size_t heap_size, size_t alignment) {
   // Add in the class metaspace area so the classes in the headers can
   // be compressed the same as instances.
-  size_t total_reserved = align_size_up(heap_size + ClassMetaspaceSize, alignment);
+  // Need to round class space size up because it's below the heap and
+  // the actual alignment depends on its size.
+  size_t metaspace_size = align_size_up(ClassMetaspaceSize, alignment);
+  size_t total_reserved = align_size_up(heap_size + metaspace_size, alignment);
   char* addr = Universe::preferred_heap_base(total_reserved, Universe::UnscaledNarrowOop);
 
   ReservedHeapSpace total_rs(total_reserved, alignment, UseLargePages, addr);
@@ -895,11 +908,23 @@ ReservedSpace Universe::reserve_heap(size_t heap_size, size_t alignment) {
     return total_rs;
   }
 
-  // Split the reserved space into main Java heap and a space for classes
+  // Split the reserved space into main Java heap and a space for
-  // so that they can be compressed using the same algorithm as compressed oops
+  // classes so that they can be compressed using the same algorithm
-  ReservedSpace heap_rs = total_rs.first_part(heap_size);
+  // as compressed oops. If compress oops and compress klass ptrs are
-  ReservedSpace class_rs = total_rs.last_part(heap_size, alignment);
+  // used we need the meta space first: if the alignment used for
+  // compressed oops is greater than the one used for compressed klass
+  // ptrs, a metadata space on top of the heap could become
+  // unreachable.
+  ReservedSpace class_rs = total_rs.first_part(metaspace_size);
+  ReservedSpace heap_rs = total_rs.last_part(metaspace_size, alignment);
   Metaspace::initialize_class_space(class_rs);
+
+  if (UseCompressedOops) {
+    // Universe::initialize_heap() will reset this to NULL if unscaled
+    // or zero-based narrow oops are actually used.
+    address base = (address)(total_rs.base() - os::vm_page_size());
+    Universe::set_narrow_oop_base(base);
+  }
   return heap_rs;
 }
 

hotspot/src/share/vm/memory/universe.hpp

@@ -105,16 +105,16 @@ class LatestMethodOopCache : public CommonMethodOopCache {
   Method* get_Method();
 };
 
-// For UseCompressedOops.
+// For UseCompressedOops and UseCompressedKlassPointers.
-struct NarrowOopStruct {
+struct NarrowPtrStruct {
-  // Base address for oop-within-java-object materialization.
+  // Base address for oop/klass-within-java-object materialization.
-  // NULL if using wide oops or zero based narrow oops.
+  // NULL if using wide oops/klasses or zero based narrow oops/klasses.
   address _base;
-  // Number of shift bits for encoding/decoding narrow oops.
+  // Number of shift bits for encoding/decoding narrow ptrs.
-  // 0 if using wide oops or zero based unscaled narrow oops,
+  // 0 if using wide ptrs or zero based unscaled narrow ptrs,
-  // LogMinObjAlignmentInBytes otherwise.
+  // LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise.
   int     _shift;
-  // Generate code with implicit null checks for narrow oops.
+  // Generate code with implicit null checks for narrow ptrs.
   bool    _use_implicit_null_checks;
 };
 
@@ -206,7 +206,10 @@ class Universe: AllStatic {
   static CollectedHeap* _collectedHeap;
 
   // For UseCompressedOops.
-  static struct NarrowOopStruct _narrow_oop;
+  static struct NarrowPtrStruct _narrow_oop;
+  // For UseCompressedKlassPointers.
+  static struct NarrowPtrStruct _narrow_klass;
+  static address _narrow_ptrs_base;
 
   // array of dummy objects used with +FullGCAlot
   debug_only(static objArrayOop _fullgc_alot_dummy_array;)
@@ -259,8 +262,21 @@ class Universe: AllStatic {
     HeapBasedNarrowOop = 2
   };
   static char*    preferred_heap_base(size_t heap_size, NARROW_OOP_MODE mode);
-  static void     set_narrow_oop_base(address base)   { _narrow_oop._base  = base; }
+  static char*    preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode);
-  static void     set_narrow_oop_use_implicit_null_checks(bool use) { _narrow_oop._use_implicit_null_checks = use; }
+  static void     set_narrow_oop_base(address base) {
+    assert(UseCompressedOops, "no compressed oops?");
+    _narrow_oop._base    = base;
+  }
+  static void     set_narrow_klass_base(address base) {
+    assert(UseCompressedKlassPointers, "no compressed klass ptrs?");
+    _narrow_klass._base   = base;
+  }
+  static void     set_narrow_oop_use_implicit_null_checks(bool use) {
+    assert(UseCompressedOops, "no compressed ptrs?");
+    _narrow_oop._use_implicit_null_checks   = use;
+  }
+  static bool     reserve_metaspace_helper(bool with_base = false);
+  static ReservedHeapSpace reserve_heap_metaspace(size_t heap_size, size_t alignment, bool& contiguous);
 
   // Debugging
   static int _verify_count;                           // number of verifies done
@@ -354,14 +370,30 @@ class Universe: AllStatic {
   static CollectedHeap* heap() { return _collectedHeap; }
 
   // For UseCompressedOops
-  static address* narrow_oop_base_addr()              { return &_narrow_oop._base; }
   static address  narrow_oop_base()                       { return  _narrow_oop._base; }
   static bool  is_narrow_oop_base(void* addr)             { return (narrow_oop_base() == (address)addr); }
   static int      narrow_oop_shift()                      { return  _narrow_oop._shift; }
   static bool     narrow_oop_use_implicit_null_checks()   { return  _narrow_oop._use_implicit_null_checks; }
 
+  // For UseCompressedKlassPointers
+  static address  narrow_klass_base()                     { return  _narrow_klass._base; }
+  static bool  is_narrow_klass_base(void* addr)           { return (narrow_klass_base() == (address)addr); }
+  static int      narrow_klass_shift()                    { return  _narrow_klass._shift; }
+  static bool     narrow_klass_use_implicit_null_checks() { return  _narrow_klass._use_implicit_null_checks; }
+
+  static address* narrow_ptrs_base_addr()                 { return &_narrow_ptrs_base; }
+  static void     set_narrow_ptrs_base(address a)         { _narrow_ptrs_base = a; }
+  static address  narrow_ptrs_base()                      { return _narrow_ptrs_base; }
+
   // this is set in vm_version on sparc (and then reset in universe afaict)
-  static void     set_narrow_oop_shift(int shift)     { _narrow_oop._shift = shift; }
+  static void     set_narrow_oop_shift(int shift)         {
+    _narrow_oop._shift   = shift;
+  }
+
+  static void     set_narrow_klass_shift(int shift)       {
+    assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs");
+    _narrow_klass._shift   = shift;
+  }
 
   // Reserve Java heap and determine CompressedOops mode
   static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);

hotspot/src/share/vm/oops/instanceOop.hpp

@@ -37,7 +37,9 @@ class instanceOopDesc : public oopDesc {
 
   // If compressed, the offset of the fields of the instance may not be aligned.
   static int base_offset_in_bytes() {
-    return UseCompressedKlassPointers ?
+    // offset computation code breaks if UseCompressedKlassPointers
+    // only is true
+    return (UseCompressedOops && UseCompressedKlassPointers) ?
              klass_gap_offset_in_bytes() :
              sizeof(instanceOopDesc);
   }

hotspot/src/share/vm/oops/method.cpp

@@ -712,7 +712,8 @@ void Method::print_made_not_compilable(int comp_level, bool is_osr, bool report)
   }
   if ((TraceDeoptimization || LogCompilation) && (xtty != NULL)) {
     ttyLocker ttyl;
-    xtty->begin_elem("make_not_%scompilable thread='%d'", is_osr ? "osr_" : "", (int) os::current_thread_id());
+    xtty->begin_elem("make_not_%scompilable thread='" UINTX_FORMAT "'",
+                     is_osr ? "osr_" : "", os::current_thread_id());
     xtty->method(this);
     xtty->stamp();
     xtty->end_elem();

hotspot/src/share/vm/oops/oop.inline.hpp

@@ -185,8 +185,8 @@ inline bool oopDesc::is_null(narrowOop obj) { return obj == 0; }
 inline bool check_obj_alignment(oop obj) {
   return (intptr_t)obj % MinObjAlignmentInBytes == 0;
 }
-inline bool check_obj_alignment(Klass* obj) {
+inline bool check_klass_alignment(Klass* obj) {
-  return (intptr_t)obj % MinObjAlignmentInBytes == 0;
+  return (intptr_t)obj % KlassAlignmentInBytes == 0;
 }
 
 inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) {
@@ -228,9 +228,9 @@ inline oop oopDesc::decode_heap_oop(oop v)  { return v; }
 
 inline narrowOop oopDesc::encode_klass_not_null(Klass* v) {
   assert(!is_null(v), "oop value can never be zero");
-  assert(check_obj_alignment(v), "Address not aligned");
+  assert(check_klass_alignment(v), "Address not aligned");
-  address base = Universe::narrow_oop_base();
+  address base = Universe::narrow_klass_base();
-  int    shift = Universe::narrow_oop_shift();
+  int    shift = Universe::narrow_klass_shift();
   uint64_t  pd = (uint64_t)(pointer_delta((void*)v, (void*)base, 1));
   assert(OopEncodingHeapMax > pd, "change encoding max if new encoding");
   uint64_t result = pd >> shift;
@@ -245,10 +245,10 @@ inline narrowOop oopDesc::encode_klass(Klass* v) {
 
 inline Klass* oopDesc::decode_klass_not_null(narrowOop v) {
   assert(!is_null(v), "narrow oop value can never be zero");
-  address base = Universe::narrow_oop_base();
+  address base = Universe::narrow_klass_base();
-  int    shift = Universe::narrow_oop_shift();
+  int    shift = Universe::narrow_klass_shift();
   Klass* result = (Klass*)(void*)((uintptr_t)base + ((uintptr_t)v << shift));
-  assert(check_obj_alignment(result), err_msg("address not aligned: " PTR_FORMAT, (void*) result));
+  assert(check_klass_alignment(result), err_msg("address not aligned: " PTR_FORMAT, (void*) result));
   return result;
 }
 

hotspot/src/share/vm/opto/bytecodeInfo.cpp

@@ -439,9 +439,7 @@ WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms,
   WarmCallInfo wci = *(initial_wci);
   failure_msg = try_to_inline(callee_method, caller_method, caller_bci, profile, &wci);
   if (failure_msg != NULL && C->log() != NULL) {
-    C->log()->begin_elem("inline_fail reason='");
+    C->log()->inline_fail(failure_msg);
-    C->log()->text("%s", failure_msg);
-    C->log()->end_elem("'");
   }
 
 #ifndef PRODUCT

hotspot/src/share/vm/opto/cfgnode.cpp

@@ -1386,7 +1386,7 @@ static Node* split_flow_path(PhaseGVN *phase, PhiNode *phi) {
     Node *n = phi->in(i);
     if( !n ) return NULL;
     if( phase->type(n) == Type::TOP ) return NULL;
-    if( n->Opcode() == Op_ConP || n->Opcode() == Op_ConN )
+    if( n->Opcode() == Op_ConP || n->Opcode() == Op_ConN || n->Opcode() == Op_ConNKlass )
       break;
   }
   if( i >= phi->req() )         // Only split for constants
@@ -1875,17 +1875,19 @@ Node *PhiNode::Ideal(PhaseGVN *phase, bool can_reshape) {
   }
 
 #ifdef _LP64
-  // Push DecodeN down through phi.
+  // Push DecodeN/DecodeNKlass down through phi.
   // The rest of phi graph will transform by split EncodeP node though phis up.
-  if (UseCompressedOops && can_reshape && progress == NULL) {
+  if ((UseCompressedOops || UseCompressedKlassPointers) && can_reshape && progress == NULL) {
     bool may_push = true;
     bool has_decodeN = false;
+    bool is_decodeN = false;
     for (uint i=1; i<req(); ++i) {// For all paths in
       Node *ii = in(i);
-      if (ii->is_DecodeN() && ii->bottom_type() == bottom_type()) {
+      if (ii->is_DecodeNarrowPtr() && ii->bottom_type() == bottom_type()) {
         // Do optimization if a non dead path exist.
         if (ii->in(1)->bottom_type() != Type::TOP) {
           has_decodeN = true;
+          is_decodeN = ii->is_DecodeN();
         }
       } else if (!ii->is_Phi()) {
         may_push = false;
@@ -1895,13 +1897,18 @@ Node *PhiNode::Ideal(PhaseGVN *phase, bool can_reshape) {
     if (has_decodeN && may_push) {
       PhaseIterGVN *igvn = phase->is_IterGVN();
       // Make narrow type for new phi.
-      const Type* narrow_t = TypeNarrowOop::make(this->bottom_type()->is_ptr());
+      const Type* narrow_t;
+      if (is_decodeN) {
+        narrow_t = TypeNarrowOop::make(this->bottom_type()->is_ptr());
+      } else {
+        narrow_t = TypeNarrowKlass::make(this->bottom_type()->is_ptr());
+      }
       PhiNode* new_phi = new (phase->C) PhiNode(r, narrow_t);
       uint orig_cnt = req();
       for (uint i=1; i<req(); ++i) {// For all paths in
         Node *ii = in(i);
         Node* new_ii = NULL;
-        if (ii->is_DecodeN()) {
+        if (ii->is_DecodeNarrowPtr()) {
           assert(ii->bottom_type() == bottom_type(), "sanity");
           new_ii = ii->in(1);
         } else {
@@ -1909,14 +1916,22 @@ Node *PhiNode::Ideal(PhaseGVN *phase, bool can_reshape) {
           if (ii->as_Phi() == this) {
             new_ii = new_phi;
           } else {
+            if (is_decodeN) {
               new_ii = new (phase->C) EncodePNode(ii, narrow_t);
+            } else {
+              new_ii = new (phase->C) EncodePKlassNode(ii, narrow_t);
+            }
             igvn->register_new_node_with_optimizer(new_ii);
           }
         }
         new_phi->set_req(i, new_ii);
       }
       igvn->register_new_node_with_optimizer(new_phi, this);
+      if (is_decodeN) {
         progress = new (phase->C) DecodeNNode(new_phi, bottom_type());
+      } else {
+        progress = new (phase->C) DecodeNKlassNode(new_phi, bottom_type());
+      }
     }
   }
 #endif

hotspot/src/share/vm/opto/classes.hpp

@@ -91,6 +91,7 @@ macro(GetAndSetP)
 macro(GetAndSetN)
 macro(Con)
 macro(ConN)
+macro(ConNKlass)
 macro(ConD)
 macro(ConF)
 macro(ConI)
@@ -118,6 +119,7 @@ macro(CountTrailingZerosI)
 macro(CountTrailingZerosL)
 macro(CreateEx)
 macro(DecodeN)
+macro(DecodeNKlass)
 macro(DivD)
 macro(DivF)
 macro(DivI)
@@ -126,6 +128,7 @@ macro(DivMod)
 macro(DivModI)
 macro(DivModL)
 macro(EncodeP)
+macro(EncodePKlass)
 macro(ExpD)
 macro(FastLock)
 macro(FastUnlock)
@@ -147,7 +150,6 @@ macro(LoadD)
 macro(LoadD_unaligned)
 macro(LoadF)
 macro(LoadI)
-macro(LoadUI2L)
 macro(LoadKlass)
 macro(LoadNKlass)
 macro(LoadL)
@@ -233,6 +235,7 @@ macro(StoreI)
 macro(StoreL)
 macro(StoreP)
 macro(StoreN)
+macro(StoreNKlass)
 macro(StrComp)
 macro(StrEquals)
 macro(StrIndexOf)

hotspot/src/share/vm/opto/compile.cpp

@@ -828,6 +828,9 @@ Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr
                            has_unsafe_access(),
                            SharedRuntime::is_wide_vector(max_vector_size())
                            );
+
+    if (log() != NULL) // Print code cache state into compiler log
+      log()->code_cache_state();
   }
 }
 
@@ -2236,6 +2239,7 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
           nop != Op_CreateEx &&
           nop != Op_CheckCastPP &&
           nop != Op_DecodeN &&
+          nop != Op_DecodeNKlass &&
           !n->is_Mem() ) {
         Node *x = n->clone();
         call->set_req( TypeFunc::Parms, x );
@@ -2284,11 +2288,11 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
   case Op_GetAndSetN:
   case Op_StoreP:
   case Op_StoreN:
+  case Op_StoreNKlass:
   case Op_LoadB:
   case Op_LoadUB:
   case Op_LoadUS:
   case Op_LoadI:
-  case Op_LoadUI2L:
   case Op_LoadKlass:
   case Op_LoadNKlass:
   case Op_LoadL:
@@ -2318,7 +2322,7 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
             addp->in(AddPNode::Base) == n->in(AddPNode::Base),
             "Base pointers must match" );
 #ifdef _LP64
-    if (UseCompressedOops &&
+    if ((UseCompressedOops || UseCompressedKlassPointers) &&
         addp->Opcode() == Op_ConP &&
         addp == n->in(AddPNode::Base) &&
         n->in(AddPNode::Offset)->is_Con()) {
@@ -2327,16 +2331,18 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
       // instructions (4) then load 64-bits constant (7).
       // Do this transformation here since IGVN will convert ConN back to ConP.
       const Type* t = addp->bottom_type();
-      if (t->isa_oopptr()) {
+      if (t->isa_oopptr() || t->isa_klassptr()) {
         Node* nn = NULL;
 
+        int op = t->isa_oopptr() ? Op_ConN : Op_ConNKlass;
+
         // Look for existing ConN node of the same exact type.
         Compile* C = Compile::current();
         Node* r  = C->root();
         uint cnt = r->outcnt();
         for (uint i = 0; i < cnt; i++) {
           Node* m = r->raw_out(i);
-          if (m!= NULL && m->Opcode() == Op_ConN &&
+          if (m!= NULL && m->Opcode() == op &&
               m->bottom_type()->make_ptr() == t) {
             nn = m;
             break;
@@ -2345,7 +2351,11 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
         if (nn != NULL) {
           // Decode a narrow oop to match address
           // [R12 + narrow_oop_reg<<3 + offset]
+          if (t->isa_oopptr()) {
             nn = new (C) DecodeNNode(nn, t);
+          } else {
+            nn = new (C) DecodeNKlassNode(nn, t);
+          }
           n->set_req(AddPNode::Base, nn);
           n->set_req(AddPNode::Address, nn);
           if (addp->outcnt() == 0) {
@@ -2400,22 +2410,24 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
   case Op_CmpP:
     // Do this transformation here to preserve CmpPNode::sub() and
     // other TypePtr related Ideal optimizations (for example, ptr nullness).
-    if (n->in(1)->is_DecodeN() || n->in(2)->is_DecodeN()) {
+    if (n->in(1)->is_DecodeNarrowPtr() || n->in(2)->is_DecodeNarrowPtr()) {
       Node* in1 = n->in(1);
       Node* in2 = n->in(2);
-      if (!in1->is_DecodeN()) {
+      if (!in1->is_DecodeNarrowPtr()) {
         in2 = in1;
         in1 = n->in(2);
       }
-      assert(in1->is_DecodeN(), "sanity");
+      assert(in1->is_DecodeNarrowPtr(), "sanity");
 
       Compile* C = Compile::current();
       Node* new_in2 = NULL;
-      if (in2->is_DecodeN()) {
+      if (in2->is_DecodeNarrowPtr()) {
+        assert(in2->Opcode() == in1->Opcode(), "must be same node type");
         new_in2 = in2->in(1);
       } else if (in2->Opcode() == Op_ConP) {
         const Type* t = in2->bottom_type();
         if (t == TypePtr::NULL_PTR) {
+          assert(in1->is_DecodeN(), "compare klass to null?");
           // Don't convert CmpP null check into CmpN if compressed
           // oops implicit null check is not generated.
           // This will allow to generate normal oop implicit null check.
@@ -2460,6 +2472,8 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
           //
         } else if (t->isa_oopptr()) {
           new_in2 = ConNode::make(C, t->make_narrowoop());
+        } else if (t->isa_klassptr()) {
+          new_in2 = ConNode::make(C, t->make_narrowklass());
         }
       }
       if (new_in2 != NULL) {
@@ -2476,23 +2490,28 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
     break;
 
   case Op_DecodeN:
-    assert(!n->in(1)->is_EncodeP(), "should be optimized out");
+  case Op_DecodeNKlass:
+    assert(!n->in(1)->is_EncodeNarrowPtr(), "should be optimized out");
     // DecodeN could be pinned when it can't be fold into
     // an address expression, see the code for Op_CastPP above.
-    assert(n->in(0) == NULL || !Matcher::narrow_oop_use_complex_address(), "no control");
+    assert(n->in(0) == NULL || (UseCompressedOops && !Matcher::narrow_oop_use_complex_address()), "no control");
     break;
 
-  case Op_EncodeP: {
+  case Op_EncodeP:
+  case Op_EncodePKlass: {
     Node* in1 = n->in(1);
-    if (in1->is_DecodeN()) {
+    if (in1->is_DecodeNarrowPtr()) {
       n->subsume_by(in1->in(1));
     } else if (in1->Opcode() == Op_ConP) {
       Compile* C = Compile::current();
       const Type* t = in1->bottom_type();
       if (t == TypePtr::NULL_PTR) {
+        assert(t->isa_oopptr(), "null klass?");
         n->subsume_by(ConNode::make(C, TypeNarrowOop::NULL_PTR));
       } else if (t->isa_oopptr()) {
         n->subsume_by(ConNode::make(C, t->make_narrowoop()));
+      } else if (t->isa_klassptr()) {
+        n->subsume_by(ConNode::make(C, t->make_narrowklass()));
       }
     }
     if (in1->outcnt() == 0) {
@@ -2526,7 +2545,7 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
   }
 
   case Op_Phi:
-    if (n->as_Phi()->bottom_type()->isa_narrowoop()) {
+    if (n->as_Phi()->bottom_type()->isa_narrowoop() || n->as_Phi()->bottom_type()->isa_narrowklass()) {
       // The EncodeP optimization may create Phi with the same edges
       // for all paths. It is not handled well by Register Allocator.
       Node* unique_in = n->in(1);
@@ -2689,12 +2708,13 @@ static void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Re
   }
 
   // Skip next transformation if compressed oops are not used.
-  if (!UseCompressedOops || !Matcher::gen_narrow_oop_implicit_null_checks())
+  if ((UseCompressedOops && !Matcher::gen_narrow_oop_implicit_null_checks()) ||
+      (!UseCompressedOops && !UseCompressedKlassPointers))
     return;
 
-  // Go over safepoints nodes to skip DecodeN nodes for debug edges.
+  // Go over safepoints nodes to skip DecodeN/DecodeNKlass nodes for debug edges.
   // It could be done for an uncommon traps or any safepoints/calls
-  // if the DecodeN node is referenced only in a debug info.
+  // if the DecodeN/DecodeNKlass node is referenced only in a debug info.
   while (sfpt.size() > 0) {
     n = sfpt.pop();
     JVMState *jvms = n->as_SafePoint()->jvms();
@@ -2705,7 +2725,7 @@ static void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Re
                         n->as_CallStaticJava()->uncommon_trap_request() != 0);
     for (int j = start; j < end; j++) {
       Node* in = n->in(j);
-      if (in->is_DecodeN()) {
+      if (in->is_DecodeNarrowPtr()) {
         bool safe_to_skip = true;
         if (!is_uncommon ) {
           // Is it safe to skip?

hotspot/src/share/vm/opto/connode.cpp

@@ -54,6 +54,7 @@ ConNode *ConNode::make( Compile* C, const Type *t ) {
   case T_ARRAY:       return new (C) ConPNode( t->is_aryptr() );
   case T_ADDRESS:     return new (C) ConPNode( t->is_ptr() );
   case T_NARROWOOP:   return new (C) ConNNode( t->is_narrowoop() );
+  case T_NARROWKLASS: return new (C) ConNKlassNode( t->is_narrowklass() );
   case T_METADATA:    return new (C) ConPNode( t->is_ptr() );
     // Expected cases:  TypePtr::NULL_PTR, any is_rawptr()
     // Also seen: AnyPtr(TopPTR *+top); from command line:
@@ -447,7 +448,7 @@ Node *ConstraintCastNode::Ideal_DU_postCCP( PhaseCCP *ccp ) {
 // If not converting int->oop, throw away cast after constant propagation
 Node *CastPPNode::Ideal_DU_postCCP( PhaseCCP *ccp ) {
   const Type *t = ccp->type(in(1));
-  if (!t->isa_oop_ptr() || (in(1)->is_DecodeN() && Matcher::gen_narrow_oop_implicit_null_checks())) {
+  if (!t->isa_oop_ptr() || ((in(1)->is_DecodeN()) && Matcher::gen_narrow_oop_implicit_null_checks())) {
     return NULL; // do not transform raw pointers or narrow oops
   }
   return ConstraintCastNode::Ideal_DU_postCCP(ccp);
@@ -607,15 +608,56 @@ const Type *EncodePNode::Value( PhaseTransform *phase ) const {
   if (t == Type::TOP) return Type::TOP;
   if (t == TypePtr::NULL_PTR) return TypeNarrowOop::NULL_PTR;
 
-  assert(t->isa_oop_ptr() || UseCompressedKlassPointers && t->isa_klassptr(), "only oopptr here");
+  assert(t->isa_oop_ptr(), "only oopptr here");
   return t->make_narrowoop();
 }
 
 
-Node *EncodePNode::Ideal_DU_postCCP( PhaseCCP *ccp ) {
+Node *EncodeNarrowPtrNode::Ideal_DU_postCCP( PhaseCCP *ccp ) {
   return MemNode::Ideal_common_DU_postCCP(ccp, this, in(1));
 }
 
+Node* DecodeNKlassNode::Identity(PhaseTransform* phase) {
+  const Type *t = phase->type( in(1) );
+  if( t == Type::TOP ) return in(1);
+
+  if (in(1)->is_EncodePKlass()) {
+    // (DecodeNKlass (EncodePKlass p)) -> p
+    return in(1)->in(1);
+  }
+  return this;
+}
+
+const Type *DecodeNKlassNode::Value( PhaseTransform *phase ) const {
+  const Type *t = phase->type( in(1) );
+  if (t == Type::TOP) return Type::TOP;
+  assert(t != TypeNarrowKlass::NULL_PTR, "null klass?");
+
+  assert(t->isa_narrowklass(), "only narrow klass ptr here");
+  return t->make_ptr();
+}
+
+Node* EncodePKlassNode::Identity(PhaseTransform* phase) {
+  const Type *t = phase->type( in(1) );
+  if( t == Type::TOP ) return in(1);
+
+  if (in(1)->is_DecodeNKlass()) {
+    // (EncodePKlass (DecodeNKlass p)) -> p
+    return in(1)->in(1);
+  }
+  return this;
+}
+
+const Type *EncodePKlassNode::Value( PhaseTransform *phase ) const {
+  const Type *t = phase->type( in(1) );
+  if (t == Type::TOP) return Type::TOP;
+  assert (t != TypePtr::NULL_PTR, "null klass?");
+
+  assert(UseCompressedKlassPointers && t->isa_klassptr(), "only klass ptr here");
+  return t->make_narrowklass();
+}
+
+
 //=============================================================================
 //------------------------------Identity---------------------------------------
 Node *Conv2BNode::Identity( PhaseTransform *phase ) {