http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52459
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2012-03-02 AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org |gnu.org | Summary|[x86] loop performance very |PPRE performs stupid |bad (worse than -O0) when |inserts |using sse4.2 popcnt | Ever Confirmed|0 |1 Known to fail| |4.7.0 --- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-02 10:00:38 UTC --- I will have a look.