https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78103
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #4) > I wouldn't introduce a builtin, that would be user accessible, perhaps > internal function + corresponding optab and just pattern match it. Yeah, IFN + optab is now the canonical way of doing "instruction selection" on GIMPLE. [you could even have target dependent IFNs if you manage to write a md define-insn to match.pd rule plus IFN generator skipping the optab]
