https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89607
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Yichao Yu from comment #6) > > For aarch64, there was talk about adding stp for q registers. > > What do you mean? I was initially unsure about it too but I assume it > already exist since clang (and now GCC 9) emits it and the arm arch > reference manual also mentions it without mentioning it only available in a > later version. I mean the support to emit stp for q registers. I did not follow the disussion close enough but from your mention, it was committed. The problem with stp for q registers on some targets is that it is single issue or it is split into two instructions anyways.
