--- a/graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/Architecture.java	Mon Feb 25 16:15:17 2013 +0100
+++ b/graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/Architecture.java	Mon Feb 25 18:19:53 2013 +0100
@@ -79,22 +79,6 @@
      */
     private final int returnAddressSize;
 
-    private final EnumMap<RegisterFlag, Register[]> registersByTypeAndEncoding;
-
-    /**
-     * Gets the register for a given {@linkplain Register#encoding encoding} and type.
-     * 
-     * @param encoding a register value as used in a machine instruction
-     * @param type the type of the register
-     */
-    public Register registerFor(int encoding, RegisterFlag type) {
-        Register[] regs = registersByTypeAndEncoding.get(type);
-        assert encoding >= 0 && encoding < regs.length;
-        Register reg = regs[encoding];
-        assert reg != null;
-        return reg;
-    }
-
     protected Architecture(String name, int wordSize, ByteOrder byteOrder, Register[] registers, int implicitMemoryBarriers, int nativeCallDisplacementOffset, int registerReferenceMapBitCount,
                     int returnAddressSize) {
         this.name = name;
@@ -105,18 +89,6 @@
         this.machineCodeCallDisplacementOffset = nativeCallDisplacementOffset;
         this.registerReferenceMapBitCount = registerReferenceMapBitCount;
         this.returnAddressSize = returnAddressSize;
-
-        registersByTypeAndEncoding = new EnumMap<>(RegisterFlag.class);
-        EnumMap<RegisterFlag, Register[]> categorizedRegs = Register.categorize(registers);
-        for (RegisterFlag type : RegisterFlag.values()) {
-            Register[] regs = categorizedRegs.get(type);
-            int max = Register.maxRegisterEncoding(regs);
-            Register[] regsByEnc = new Register[max + 1];
-            for (Register reg : regs) {
-                regsByEnc[reg.encoding] = reg;
-            }
-            registersByTypeAndEncoding.put(type, regsByEnc);
-        }
     }
 
     /**
@@ -161,14 +133,6 @@
     }
 
     /**
-     * Gets a mask of the barrier constants denoting the barriers that are not required to be
-     * explicitly inserted under this architecture.
-     */
-    public int getImplicitMemoryBarriers() {
-        return implicitMemoryBarriers;
-    }
-
-    /**
      * Gets the size of the return address pushed to the stack by a call instruction. A value of 0
      * denotes that call linkage uses registers instead.
      */

--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Mon Feb 25 16:15:17 2013 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Mon Feb 25 18:19:53 2013 +0100
@@ -347,28 +347,4 @@
             }
         }
     }
-
-    /**
-     * Clears the specified location as a reference in the reference map of the debug information.
-     * The tracked location can be a {@link RegisterValue} or a {@link StackSlot}. Note that a
-     * {@link Constant} is automatically tracked.
-     * 
-     * @param location The location to be removed from the reference map.
-     * @param registerRefMap A register reference map, as created by {@link #initRegisterRefMap()}.
-     * @param frameRefMap A frame reference map, as created by {@link #initFrameRefMap()}.
-     */
-    public void clearReference(Value location, BitSet registerRefMap, BitSet frameRefMap) {
-        if (location.getKind() == Kind.Object) {
-            if (location instanceof RegisterValue) {
-                registerRefMap.clear(asRegister(location).number);
-            } else if (isStackSlot(location)) {
-                int index = frameRefMapIndex(asStackSlot(location));
-                if (index < frameRefMap.size()) {
-                    frameRefMap.clear(index);
-                }
-            } else {
-                assert isConstant(location);
-            }
-        }
-    }
 }