A recent patch increased GCC's memory consumption!

[Kazu Hirata]

Hi Honza,

> Hmm,
> looks like it is the vector change.  I wonder if we can't cut them down
> to VARRAY memory usage and/or avoid aliasing datastructures at -O0
> completely?

Of the three new VECs mentioned in the ChangeLog diff, reg_base_value tries to 
keep allocated memory for the next function to be compiled.  See alias.c:2428.

The cgraph one shouldn't matter as it is allocated on heap and explicitly freed.

When you take stats, are you doing so after running GC?

Kazu Hirata