https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119420
--- Comment #2 from Jeffrey A. Law <law at gcc dot gnu.org> ---
I'd marked this at some point for investigation on risc-v. I think one of the
recent changes squashed all these into something sensible:
sltiu a0,a0,2 # 12 [c=8 l=4] *riscv.md:3766
ret # 25 [c=0 l=4] simple_return
