> > > >      counter less than total_count/N (they are not useful anyway).
> > 
> > However it seems that I missed a problem here. With step 2 and 4 the
> > merge is not distributive.
> > 
> > I added 2 and 4 trying to work around the fact that we have no
> > convenient place to do pruning if merging is not performed (since merge
> > functions are not called at all).  I think we need to invent such place
> > - just do that on the begginign of dump_one_gcov.
> 
> Hm, anyway, stage3 closes today and it's definitely next stage1 material.

It is a regression, so we can still fix it in stage4 :)
Honza

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