also generate MIR for statics

src/librustc_metadata/encoder.rs

@@ -839,6 +839,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
                 _ => None,
             },
             mir: match item.node {
+                hir::ItemStatic(..) |
                 hir::ItemConst(..) => self.encode_mir(def_id),
                 hir::ItemFn(_, _, constness, _, ref generics, _) => {
                     let tps_len = generics.ty_params.len();