sperber(a)informatik.uni-tuebingen.de (Michael Sperber [Mr. Preprocessor]) writes: > >>>>> "Hrvoje" == Hrvoje Niksic <hniksic(a)srce.hr&gt; writes: > > Hrvoje> Many of the recent performance changes included replacing Fsetcar() > Hrvoje> and Fsetcdr() with XCAR/XCDR on the left side of an > Hrvoje> assignment. > > This is also bad for another reason---if we ever want to put in a > write barrier to support faster GC, we'll have to change things back > to Fsetcar/cdr. I won't change things back to Fsetcar/cdr because they introduce needless error checking (the point of XCAR/XCDR is that we *know* we're accessing conses), but I think I'll introduce XSETCAR/XSETCDR macros with no loss of speed.