http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50904
--- Comment #35 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-02 21:21:15 UTC --- > One thing I notice (and that's the only difference I can spot at the tree > level) is that we do not CSE the **2s of There are many missed hoisting opportunities, with or without the switch. There are just a few more with the switch, hence the performance regression.
