Re: Release RTL bodies after compilation (sometimes)

[Daniel Berlin <dberlin at dberlin dot org>]

On Wed, 15 Sep 2004, Diego Novillo wrote:

> On Wed, 2004-09-15 at 07:32, Jan Hubicka wrote:
>
> pattern is not really suitable for GC.  Again, the fact that you are
> adding ggc_free() here and there may be a symptom of a memory allocation
> mismatch.

We already knew/know that for things like basic blocks and edges, there 
was an allocation mismatch.
If you look at the history, they were either obstack or xmalloc'd (i 
forget which), and i changed it to be pool allocated.

However, in order to make the bb annotations reachable to the GC, we 
switched bb's back to gc allocation.
Personally, I still think the bb's/edge's should be pool allocated.
It's the obvious match for them.
However, the GC can't walk un-gc'd memory at all, so we can't do that.
It's GC limitations getting in the way of proper memory management here.
--Dan