A recent patch decreased GCC's memory consumption.

[Jan Hubicka]

> On Thu, 2006-11-02 at 07:49 +0000, gcctest@suse.de wrote:
> > Hi,
> > 
> > I am a friendly script caring about memory consumption in GCC.  Please
> > contact jh@suse.cz if something is going wrong.
> 
> > comparing insn-attrtab.c compilation at -O2 level:
> >   Ovarall memory allocated via mmap and sbrk decreased from 134058k to 129338k, overall -3.65%
> >     Overall memory needed: 134058k -> 129338k
> >     Peak memory use before GGC: 92593k
> >     Peak memory use after GGC: 84705k
> >     Maximum of released memory in single GGC run: 30380k
> >     Garbage: 319045k
> >     Leak: 9345k
> >     Overhead: 36716k
> >     GGC runs: 247
> > Head of the ChangeLog is:
> > 
> > --- /usr/src/SpecTests/sandbox-britten-memory/x86_64/mem-result/ChangeLog	2006-11-02 02:40:15.000000000 +0000
> > +++ /usr/src/SpecTests/sandbox-britten-memory/gcc/gcc/ChangeLog	2006-11-02 06:19:57.000000000 +0000
> > @@ -1,3 +1,9 @@
> > +2006-11-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
> > +
> > +	PR middle-end/29335
> > +	* builtins.c (do_mpfr_sincos): New.
> > +	(fold_builtin_1): Use it to fold builtin sincos.
> > +
> 
> 
> This change does make sense for the decrease at all because we should
> not have any fp in insn-attrtab.c.

Looking into sbrk dumps, the usage ineed changed. Duno why,
will try to investigate it more next week.

Honza
> 
> -- Pinski