http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56113
--- Comment #9 from Steven Bosscher <steven at gcc dot gnu.org> 2013-01-28 23:34:36 UTC --- (In reply to comment #7) With the patch from comment #7: n=1000 6.18user 254976k maxresident n=2000 16.76user 509184k maxresident n=4000 54.23user 1432576l maxresident n=8000 201.31user 1343296k maxresident Without: n=1000 6.45user 255616k maxresident n=2000 17.65user 572096k maxresident n=4000 55.10user 1485184k maxresident n=8000 199.49user 1456000k maxresident So there appears to be some small effect on memory footprint but nothing to get excited about, and no effect on compile time.
