+unsigned OptTransfers2 (CodeSeg* S);
+/* Replace loads followed by a register transfer by a load with the second
+** register if possible.
+*/
+
+unsigned OptTransfers3 (CodeSeg* S);
+/* Replace a register transfer followed by a store of the second register by a
+** store of the first register if this is possible.
+*/
+
+unsigned OptTransfers4 (CodeSeg* S);
+/* Replace a load of a register followed by a transfer insn of the same register
+** by a load of the second register if possible.
+*/
+
+unsigned OptPushPop (CodeSeg* S);
+/* Remove a PHA/PLA sequence were A is not used later */
+
+unsigned OptPrecalc (CodeSeg* S);
+/* Replace immediate operations with the accu where the current contents are
+** known by a load of the final value.
+*/
+