http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55478
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> 2012-11-27 13:39:57 UTC --- Well, the loop isn't unrolled until late cunroll after which there is no SRA / FRE to fix things up. No, DOM doesn't get it by implementation limitation. As for the PRE issue - we indeed seem to not release SSA temporaries created by PRE. I'll look into that.
