diff --git a/src/comp/front/ast.rs b/src/comp/front/ast.rs
index 50a016f88af2..6efda692913a 100644
--- a/src/comp/front/ast.rs
+++ b/src/comp/front/ast.rs
@@ -20,10 +20,7 @@ type def_id = tup(crate_num, def_num);
 
 type ty_param = ident;
 
-// Annotations added during successive passes.
-type ann = rec(uint id,
-               middle::ty::t ty,
-               option::t[vec[middle::ty::t]] tps);
+type ann = rec(uint id);
 
 tag def {
     def_fn(def_id);
diff --git a/src/comp/front/parser.rs b/src/comp/front/parser.rs
index f4b1d1a36bc2..e56075b534fc 100644
--- a/src/comp/front/parser.rs
+++ b/src/comp/front/parser.rs
@@ -146,10 +146,7 @@ fn new_parser(session::session sess,
             fn get_chpos() -> uint {ret rdr.get_chpos();}
 
             fn get_ann() -> ast::ann {
-                // TODO: Remove ty and tps, which should be unused
-                // by now.
-                auto rv = rec(id=next_ann_var, ty=0u,
-                              tps=none[vec[middle::ty::t]]);
+                auto rv = rec(id=next_ann_var);
                 next_ann_var += 1u;
                 ret rv;
             }
diff --git a/src/comp/middle/ty.rs b/src/comp/middle/ty.rs
index 10db57626f0e..06b1d8e36e59 100644
--- a/src/comp/middle/ty.rs
+++ b/src/comp/middle/ty.rs
@@ -1572,28 +1572,6 @@ fn ann_to_monotype(&ctxt cx, ast::ann a) -> t {
 }
 
 
-// Turns a type and optional type parameters into an annotation, using
-// defaults for other fields.
-fn mk_ann_type(uint node_id, t typ, option::t[vec[t]] tps) -> ast::ann {
-    ret rec(id=node_id, ty=typ, tps=tps);
-}
-
-// Turns a type into an annotation, using defaults for other fields.
-fn triv_ann(uint node_id, t typ) -> ast::ann {
-    ret mk_ann_type(node_id, typ, none[vec[t]]);
-}
-
-// Creates a nil type annotation.
-fn plain_ann(uint node_id, ctxt tcx) -> ast::ann {
-    ret triv_ann(node_id, mk_nil(tcx));
-}
-
-// Creates a _|_ type annotation.
-fn bot_ann(uint node_id, ctxt tcx) -> ast::ann {
-    ret triv_ann(node_id, mk_bot(tcx));
-}
-
-
 // Returns the number of distinct type parameters in the given type.
 fn count_ty_params(&ctxt cx, t ty) -> uint {
     fn counter(&ctxt cx, @mutable vec[uint] param_indices, t ty) {
diff --git a/src/comp/middle/typeck.rs b/src/comp/middle/typeck.rs
index 6af0e299c9fb..df030d72ce87 100644
--- a/src/comp/middle/typeck.rs
+++ b/src/comp/middle/typeck.rs
@@ -16,17 +16,13 @@ import middle::ty::block_ty;
 import middle::ty::expr_ty;
 import middle::ty::field;
 import middle::ty::method;
-import middle::ty::mk_ann_type;
 import middle::ty::mo_val;
 import middle::ty::mo_alias;
 import middle::ty::mo_either;
 import middle::ty::node_type_table;
 import middle::ty::pat_ty;
 import middle::ty::path_to_str;
-import middle::ty::plain_ann;
-import middle::ty::bot_ann;
 import middle::ty::struct;
-import middle::ty::triv_ann;
 import middle::ty::ty_param_substs_opt_and_ty;
 import middle::ty::ty_to_str;
 import middle::ty::type_is_integral;
@@ -645,9 +641,7 @@ mod collect {
 
     fn get_tag_variant_types(&@ctxt cx, &ast::def_id tag_id,
                              &vec[ast::variant] variants,
-                             &vec[ast::ty_param] ty_params)
-            -> vec[ast::variant] {
-        let vec[ast::variant] result = [];
+                             &vec[ast::ty_param] ty_params) {
 
         // Create a set of parameter types shared among all the variants.
         let vec[ty::t] ty_param_tys = [];
@@ -682,17 +676,10 @@ mod collect {
 
             auto tpt = tup(ty_param_count, result_ty);
             cx.tcx.tcache.insert(variant.node.id, tpt);
-            auto variant_t = rec(
-                ann=triv_ann(variant.node.ann.id, result_ty)
-                with variant.node
-            );
             write::ty_only(cx.tcx, variant.node.ann.id, result_ty);
-            result += [common::respan(variant.span, variant_t)];
         }
-
-        ret result;
     }
-    
+
     fn get_obj_method_types(&@ctxt cx, &ast::_obj object) -> vec[ty::method] {
         ret vec::map[@ast::method,method](bind ty_of_method(cx, _),
                                           object.methods);
@@ -1184,13 +1171,10 @@ mod pushdown {
                 let ty_param_substs_and_ty res_t = demand::full(scx, pat.span,
                       expected, tt, tps, NO_AUTODEREF);
 
-                auto a_1 = mk_ann_type(ann.id, res_t._1,
-                                       some[vec[ty::t]](res_t._0));
-
                 // TODO: push down type from "expected".
                 write::ty_fixup(scx, ann.id,
                     ty::ann_to_ty_param_substs_opt_and_ty
-                        (scx.fcx.ccx.tcx.node_types, a_1));
+                        (scx.fcx.ccx.tcx.node_types, ann));
             }
         }
     }
@@ -1691,8 +1675,7 @@ fn check_pat(&@stmt_ctxt scx, &@ast::pat pat) {
         }
         case (ast::pat_bind(?id, ?def_id, ?a)) {
             auto typ = next_ty_var(scx);
-            auto ann = triv_ann(a.id, typ);
-            write::ty_only_fixup(scx, ann.id, typ);
+            write::ty_only_fixup(scx, a.id, typ);
         }
         case (ast::pat_tag(?p, ?subpats, ?old_ann)) {
             auto vdef = ast::variant_def_ids
@@ -1882,7 +1865,6 @@ fn check_expr(&@stmt_ctxt scx, &@ast::expr expr) {
         pushdown::pushdown_expr(scx, lhs_t1, rhs);
         auto rhs_t1 = expr_ty(scx.fcx.ccx.tcx, rhs);
 
-        auto ann = triv_ann(a.id, rhs_t1);
         write::ty_only_fixup(scx, a.id, rhs_t1);
     }