https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65249
--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> --- (In reply to Oleg Endo from comment #5) > > While we probably could add those two patterns as a quick fix, I don't think > it's a great solution, because we'd actually need to add such patterns for > *all* insns that have the 'z'/r0 constraint. In this case it might be > better to add an SH specific RTL pass before IRA which can do such kind of > RA preparations to improve the RA result/process. Actually, that pass might also cover the issue in PR 64785.
