Re: [PATCH] Avoid ggc_collect () after WPA forking

[Martin Liška <mliska at suse dot cz>]

There are stats for Firefox with LTO and -O2. According to graphs it
looks that memory consumption for parallel WPA phase is similar.
When I disable parallel WPA, wpa footprint is ~4GB, but ltrans memory
footprint is similar to parallel WPA that reduces libxul.so linking by ~10%.

Martin


On 03/19/2014 01:30 PM, Richard Biener wrote:
> On Wed, 19 Mar 2014, Steven Bosscher wrote:
>
> > On Wed, Mar 19, 2014 at 12:10 PM, Richard Biener wrote:
> > > Index: gcc/ggc-page.c
> > > ===================================================================
> > > --- gcc/ggc-page.c      (revision 208642)
> > > +++ gcc/ggc-page.c      (working copy)
> > > @@ -1199,6 +1199,8 @@ ggc_round_alloc_size (size_t requested_s
> > >     return size;
> > >   }
> > >
> > > +int may_alloc = 1;
> > "bool may_alloc"?
> It's only checking code I didn't commit.  We may of course alloc
> but I wanted to prove we don't.
>
> Richard.

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