https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66599
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- "Q" with this instruction. That constraint requires the address to be in a single register, which is all this instruction can handle.