https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109476
--- Comment #11 from Wilhelm M <klaus.doldinger64 at googlemail dot com> --- After testing some more code, I got this ICE: /home/lmeier/Projekte/wmucpp/boards/rcfoc/gimbal_sbus_01.cc: In static member function 'static void GlobalFsm<BusDevs>::ratePeriodic() [with BusDevs =BusDevs<External::Bus::NoBus<Devices<0> > >]': /home/lmeier/Projekte/wmucpp/boards/rcfoc/gimbal_sbus_01.cc:426:5: error: unrecognizable insn: 426 | } | ^ (insn 1584 1583 25 3 (set (concatn:HI [ (reg:QI 800) (reg:QI 801 [+1 ]) ]) (reg:HI 826)) "../../include0/external/sbus/sbus.h":226:69 -1 (nil)) during RTL pass: subreg1 /home/lmeier/Projekte/wmucpp/boards/rcfoc/gimbal_sbus_01.cc:426:5: internal compiler error: in extract_insn, at recog.cc:2791 0x79f2cb _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.cc:108 0x79f2e7 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../gcc/rtl-error.cc:116 0x79dc77 extract_insn(rtx_insn*) ../../gcc/recog.cc:2791 0x1a43d91 decompose_multiword_subregs ../../gcc/lower-subreg.cc:1651 0x1a447ca execute ../../gcc/lower-subreg.cc:1790 Please submit a full bug report, with preprocessed source (by using -freport-bug).
