http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60089
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> --- (In reply to Richard Biener from comment #1) > You'd need to disable complex lowering at the GIMPLE level and see what > support is missing from RTL expansion for example. > > For the disabling I'd suggest adding a target hook (if it at any point is > supposed to go upstream). Couldn't the complex lowering pass check optab, like vector lowering does?