https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114310
Jeffrey A. Law <law at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |law at gcc dot gnu.org --- Comment #2 from Jeffrey A. Law <law at gcc dot gnu.org> --- !?! That doesn't make any sense to me Andrew. This is a failure to match the insn, not a constraint error. And given the existence of a zero register, isn't zero valid anywhere a general purpose register is valid?