--- a/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/FrameWithoutBoxing.java	Tue Mar 24 17:19:23 2015 +0100
+++ b/graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/FrameWithoutBoxing.java	Tue Mar 24 17:33:15 2015 +0100
@@ -274,24 +274,24 @@
     }
 
     private void verifySet(int slotIndex, byte tag) {
-        if (CompilerDirectives.inInterpreter() && slotIndex >= getTags().length) {
-            if (!resize()) {
-                throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slotIndex));
-            }
-        }
+        checkSlotIndex(slotIndex);
         getTags()[slotIndex] = tag;
     }
 
     private void verifyGet(int slotIndex, byte tag) throws FrameSlotTypeException {
+        checkSlotIndex(slotIndex);
+        if (getTags()[slotIndex] != tag) {
+            CompilerDirectives.transferToInterpreter();
+            throw new FrameSlotTypeException();
+        }
+    }
+
+    private void checkSlotIndex(int slotIndex) {
         if (CompilerDirectives.inInterpreter() && slotIndex >= getTags().length) {
             if (!resize()) {
                 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slotIndex));
             }
         }
-        if (getTags()[slotIndex] != tag) {
-            CompilerDirectives.transferToInterpreter();
-            throw new FrameSlotTypeException();
-        }
     }
 
     private static long getPrimitiveOffset(int slotIndex) {

--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java	Tue Mar 24 17:19:23 2015 +0100
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java	Tue Mar 24 17:33:15 2015 +0100
@@ -150,32 +150,27 @@
 
     @Override
     public Object getValue(FrameSlot slot) {
+        int slotIndex = getSlotIndexChecked(slot);
+        return locals[slotIndex];
+    }
+
+    private int getSlotIndexChecked(FrameSlot slot) {
         int slotIndex = slot.getIndex();
         if (slotIndex >= tags.length) {
             if (!resize()) {
                 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
             }
         }
-        return locals[slotIndex];
+        return slotIndex;
     }
 
     private void verifySet(FrameSlot slot, FrameSlotKind accessKind) {
-        int slotIndex = slot.getIndex();
-        if (slotIndex >= tags.length) {
-            if (!resize()) {
-                throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
-            }
-        }
+        int slotIndex = getSlotIndexChecked(slot);
         tags[slotIndex] = (byte) accessKind.ordinal();
     }
 
     private void verifyGet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException {
-        int slotIndex = slot.getIndex();
-        if (slotIndex >= tags.length) {
-            if (!resize()) {
-                throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
-            }
-        }
+        int slotIndex = getSlotIndexChecked(slot);
         byte tag = tags[slotIndex];
         if (accessKind == FrameSlotKind.Object ? tag != 0 : tag != accessKind.ordinal()) {
             throw new FrameSlotTypeException();
@@ -195,12 +190,7 @@
     }
 
     private byte getTag(FrameSlot slot) {
-        int slotIndex = slot.getIndex();
-        if (slotIndex >= tags.length) {
-            if (!resize()) {
-                throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
-            }
-        }
+        int slotIndex = getSlotIndexChecked(slot);
         return tags[slotIndex];
     }