https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122274
--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> --- WRT c#2, I concur with Segher and Surya. Once regcprop does its job we lose track of the fact we're mucking around the LR. There's no reasonable way for the CFI bits to recover that information once we do the propagation and delete insn 44.
