http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61153
ktkachov at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ktkachov at gcc dot gnu.org --- Comment #1 from ktkachov at gcc dot gnu.org --- These are caused by r210216 when those intrinsics were reimplemented in C rather than using builtins. The only reason they fail is because the tests are compiled with -O0 which prevents combine from matching the corresponding patterns. If compiled with optimisation the tests all work. I believe the plan is to remove these tests sometime soon anyway. See http://gcc.gnu.org/ml/gcc-patches/2014-04/msg01836.html for more.