https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110268
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |14.0 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- At stream-out time we stream the MD specific DECL_FUNCTION_CODE and at stream-in time we expect the backend has a FUNCTION_DECL corresponding to that code for us. The error means that targetm.builtin_decl doesn't know about the builtin (or did not implement "materializing" it).