https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64003
--- Comment #26 from Ilya Enkovich <enkovich.gnu at gmail dot com> --- (In reply to rsand...@gcc.gnu.org from comment #25) > > If all you want to do is add 1 byte to the length to account for a prefix > then it might be cleaner to use ADJUST_INSN_LENGTH. You could then keep > the single nobnd patterns. Currently i386 target doesn't have ADJUST_INSN_LENGTH defined. So I prefer to keep it so and have all length definitions explicit in md file.