https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69454
--- Comment #32 from Ilya Enkovich <ienkovich at gcc dot gnu.org> --- (In reply to Uroš Bizjak from comment #31) > Maybe we can use HJ's patch from Comment #27 and communicate converted_insns > flag from convert_scalars_to_vector to ix86_finalize_stack_realign_flags? > The i_f_s_r function is able to cancel the realignment just before prologue > generation, when realignment is not needed. I don't see how it resolves DRAP register problem. Patch will indicate we need to realign but won't provide a DRAP for it. And as I mentioned before it might be unsafe to allocate DRAP after STV due to tail calls.