diff --git a/opts/IMPCacher.h b/opts/IMPCacher.h
index 4f76810..28fd500 100644
--- a/opts/IMPCacher.h
+++ b/opts/IMPCacher.h
@@ -1,4 +1,5 @@
 #include "LLVMCompat.h"
+#include "llvm/Support/CallSite.h"
 namespace llvm
 {
   class BasicBlock;
@@ -32,7 +33,17 @@ namespace GNUstep
       void CacheLookup(Instruction *lookup, Value *slot, Value *version, bool
           isSuperMessage=false);
       void SpeculativelyInline(Instruction *call, Function *function);
+      /**
+       * Turns a call to objc_msgSend*() into a call to
+       * objc_msg_lookup_sender() and a call to the resulting IMP.  The call to
+       * the IMP is returned.  The single call is faster, but prevents caching.
+       * The split call allows caching, which is faster in the best case and
+       * slower in the worst...
+       */
+      CallSite SplitSend(CallSite msgSend);
   };
 
   void removeTerminator(BasicBlock *BB);
+  void addPredecssor(BasicBlock *block, BasicBlock *oldPredecessor, BasicBlock
+          *newPredecessor);
 }