https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104054
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The toplevel comment in the pass says: DEBUG_INSNs are treated specially, in particular registers occurring inside them are treated as requiring ALL_REGS as a class.