patrick r michaud pmichaudpoboxcom tue aug 05 2008 105108am 0700 klaasjan stol wrote pdd19 optional cunique_reg modifier force register allocator associate identifier unique register duration subroutine however document would want flag maybe add example sometimes register allocator reuse register important register reused unique_reg flag supposed guarantee whatever register allocated symbol used _only_ symbol reallocated pge used unique_reg try turn register allocator subs generates tended perform badly terms speed terms correctly allocating registers pges generated subs use small fixed number registers register allocator detriment help pm wed 06 aug 2008 125851 0500 perl 57636 todopdd19 document reason unique_reg flag