+int notUsedInBlock (symbol *, eBBlock *, iCode *);
+bool allDefsOutOfRange (bitVect *, int, int);
+void computeLiveRanges (eBBlock **, int, bool);
+void recomputeLiveRanges (eBBlock **, int);
+
+void setToRange (operand *, int, bool);
+void hashiCodeKeys (eBBlock **, int);