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Re: Trim down cselib memory usage
> Jan Hubicka <jh@suse.cz> writes:
>
> > Hi,
> > as pointed out in other mail, cselib is responsible for 40% GGC memory
> > consumption while compiling conbine.c.
> > The datastructures are bnetter to go into allocpool that is whole a lot more
> > effecient for such kind of data. Still it would be worthwhile to look on why
> > there are so many containers needed at first place.
> >
> > This seems to be responsible for 2% speedup of GCC component test.
> > and it also shows the real need for statistics on varpool :)
> >
> > OK for mainline/branch?
>
> No, it will cause GC to crash because GCed objects must be allocated
> with ggc_alloc.
These objects are not GCed. cselib is used locally within pass only.
Honza
>
> --
> - Geoffrey Keating <geoffk@geoffk.org>