https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66872
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-07-15 Ever confirmed|0 |1 --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- I think we can assume (on gimple) that andn is available and thus "canonicalize" to andn form when possible. The transform at least makes one binary operation an unary operation.