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Re: Machine-dependent bits for GC


>   We're using a non-conservative collector.  (At the moment, a slow,
> simple one.  Alex Samuel is writing a faster, not so simple one.)  The
> collector is guaranteed to be run only after every optimization pass
> in the GCC back-end.  (We might add additional calls at various places
> in the front-end, later.)  At each of these collections, the collector
> will collect all data not reachable from a "root"; each root must be
> registered with the collector.

cse sometimes is a real memory hog.  It would be useful to do GC in every
invokation of cse_basic_block.


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