"zouq" <[EMAIL PROTECTED]> writes: > yes, as you have suggested, i have already read the gcc-int about garbage > collection, and i still can`t get the imformation i want. > i want to know the following constructs: > gt_ggc_cache_rtab, gt_ggc_deletable_rtab .... > acording to what rules to genenrate them, > i read some of the gengtype.c, and i still don`t understand it. :(
Can you ask a more specific question? What do you really want to know? The cache_rtab symbols wind up in files specific to particular languages. The effect is that gt_ggc_cache_rtab is defined once in a specific backend (e.g., cc1, cc1plus, etc.). It lists GC roots which use "if_marked" in the GTY description--see the docs. The deletable_rtab symbols are similar, but list GC roots which use "deletable". > and now i am thinking that why use garbage collection in gcc, > is it because of its high efficiency? Ha ha, no. See Nix's reply. Ian
