int isOperandGlobal (operand *);
void printiCChain (iCode *, FILE *);
operand *ast2iCode (ast *,int);
-operand *geniCodeCast (sym_link *, operand *, bool);
operand *geniCodePtrPtrSubtract (operand *, operand *);
void initiCode ();
iCode *iCodeFromAst (ast *);