Function fn_abi_new_uncached

fn fn_abi_new_uncached<'tcx>(
    cx: &LayoutCx<'tcx>,
    sig: PolyFnSig<'tcx>,
    extra_args: &[Ty<'tcx>],
    caller_location: Option<Ty<'tcx>>,
    fn_def_id: Option<DefId>,
    force_thin_self_ptr: bool,
) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>>