Function rustc_hir_analysis::collect::compute_sig_of_foreign_fn_decl

fn compute_sig_of_foreign_fn_decl<'tcx>(
    tcx: TyCtxt<'tcx>,
    def_id: DefId,
    decl: &'tcx FnDecl<'tcx>,
    abi: Abi
) -> PolyFnSig<'tcx>