Re: [PATCH][C++] Improve PR15855 (compile-time/memory hog)

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Sep 16, 2005, at 1:21 PM, Giovanni Bajo wrote:

> Richard Guenther <rguenther@suse.de> wrote:
>
> > This patch makes the C++ frontend emit static initializers and
> > destructors with exposing less jump-threading opportunities to DOM,
> > which otherwise uses a gazillion amount of memory and compile-time.
>
>
> I'm not a big fan of working around our own bugs. If DOM has 
> compile-time
> explosion, it means it needs tuning, not that we should tune our 
> internally
> generated code; users could exploit the same compile-time hog anyway.

This is a proper fix as it also improves -O0 compile time and does not 
depend
on the optimizers to optimize this case.  Not producing these trees in 
the
front-end also reduces memory usage which is a good thing for -O0.

Thanks,
Andrew Pinski