PR rtl-optimization/28071 (reduce memory usage consumed by liveness)

[Jan Hubicka]

> Jan Hubicka <jh@suse.cz> writes:
> 
> > Hi,
> > this is another low hanging 100MB fruit on bug2.c -O3 compilation.  The
> > liveness bitmaps are very dense and very numberous resulting in large memory
> > consumption, but we throw them away for each liveness pass not freeing them
> > until end of compilation of the function.
> >
> > :ADDPATCH middle-end:
> > Bootstrapped/regtested i686-linux, OK?
> 
> This is causing bootstrap comparison failures on ia64.

Hi,
I have problems to reproduce this with current CVS checkout.  What flags
do you use, or can I get access to the broken tree?

Thanks and sorry for the delays,
Honza
> 
> Andreas.
> 
> -- 
> Andreas Schwab, SuSE Labs, schwab@suse.de
> SuSE Linux Products GmbH, MaxfeldstraĂŸe 5, 90409 NĂźrnberg, Germany
> PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
> "And now for something completely different."