/*-----------------------------------------------------------------*/
/* rUmaskForOp :- returns register mask for an operand */
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
/* rUmaskForOp :- returns register mask for an operand */
/*-----------------------------------------------------------------*/
/* this routine will mark the a symbol as used in one
instruction use only && if the defintion is local
(ie. within the basic block) && has only one definition &&
/* this routine will mark the a symbol as used in one
instruction use only && if the defintion is local
(ie. within the basic block) && has only one definition &&