[rfc] Moving bbs back to pools

[Ian Lance Taylor]

Ian Lance Taylor <iant@google.com> writes:

> Zdenek Dvorak <rakdver@kam.mff.cuni.cz> writes:
> 
> > The problem is, that it does not give any speedups (it is almost
> > completely compile-time neutral for compilation of preprocessed
> > gcc sources).  I will check whether moving also edges to pools
> > changes anything, but so far it does not seem very promising :-(
> 
> Does it make any difference for gcc.c-torture/compile/20001226-1.c?
> And of course it won't make any difference if you have enough memory
> that you never need to garbage collect without your patch.

I was wrong to say that.  It could make a difference even if you don't
garbage collect, since the allocation will be cheaper.  But that is
likely to be a relatively small effect.

Ian