https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94666
Andreas Krebbel <krebbel at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Ever confirmed|0 |1 Last reconfirmed| |2020-04-20 Assignee|unassigned at gcc dot gnu.org |krebbel at gcc dot gnu.org --- Comment #1 from Andreas Krebbel <krebbel at gcc dot gnu.org> --- Created attachment 48309 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48309&action=edit Patch The expander has to simplify the generated subreg in case the incoming operand is already a subreg.