diff --git a/py/compile.c b/py/compile.c
index 1789530f6e..be1fd8b1f9 100644
--- a/py/compile.c
+++ b/py/compile.c
@@ -2499,7 +2499,7 @@ STATIC void compile_atom_brace(compiler_t *comp, mp_parse_node_struct_t *pns) {
                 #if MICROPY_PY_BUILTINS_SET
                 // if it's a set, build it
                 if (!is_dict) {
-                    EMIT_ARG(build_set, 1 + n);
+                    EMIT_ARG(build, 1 + n, MP_EMIT_BUILD_SET);
                 }
                 #endif
             } else {
@@ -2522,7 +2522,7 @@ STATIC void compile_atom_brace(compiler_t *comp, mp_parse_node_struct_t *pns) {
         set_with_one_element:
         #if MICROPY_PY_BUILTINS_SET
         compile_node(comp, pn);
-        EMIT_ARG(build_set, 1);
+        EMIT_ARG(build, 1, MP_EMIT_BUILD_SET);
         #else
         assert(0);
         #endif
@@ -2551,7 +2551,7 @@ STATIC void compile_subscript_3_helper(compiler_t *comp, mp_parse_node_struct_t
     if (MP_PARSE_NODE_IS_NULL(pn)) {
         // [?:]
         EMIT_ARG(load_const_tok, MP_TOKEN_KW_NONE);
-        EMIT_ARG(build_slice, 2);
+        EMIT_ARG(build, 2, MP_EMIT_BUILD_SLICE);
     } else if (MP_PARSE_NODE_IS_STRUCT(pn)) {
         pns = (mp_parse_node_struct_t*)pn;
         if (MP_PARSE_NODE_STRUCT_KIND(pns) == PN_subscript_3c) {
@@ -2559,11 +2559,11 @@ STATIC void compile_subscript_3_helper(compiler_t *comp, mp_parse_node_struct_t
             pn = pns->nodes[0];
             if (MP_PARSE_NODE_IS_NULL(pn)) {
                 // [?::]
-                EMIT_ARG(build_slice, 2);
+                EMIT_ARG(build, 2, MP_EMIT_BUILD_SLICE);
             } else {
                 // [?::x]
                 compile_node(comp, pn);
-                EMIT_ARG(build_slice, 3);
+                EMIT_ARG(build, 3, MP_EMIT_BUILD_SLICE);
             }
         } else if (MP_PARSE_NODE_STRUCT_KIND(pns) == PN_subscript_3d) {
             compile_node(comp, pns->nodes[0]);
@@ -2572,21 +2572,21 @@ STATIC void compile_subscript_3_helper(compiler_t *comp, mp_parse_node_struct_t
             assert(MP_PARSE_NODE_STRUCT_KIND(pns) == PN_sliceop); // should always be
             if (MP_PARSE_NODE_IS_NULL(pns->nodes[0])) {
                 // [?:x:]
-                EMIT_ARG(build_slice, 2);
+                EMIT_ARG(build, 2, MP_EMIT_BUILD_SLICE);
             } else {
                 // [?:x:x]
                 compile_node(comp, pns->nodes[0]);
-                EMIT_ARG(build_slice, 3);
+                EMIT_ARG(build, 3, MP_EMIT_BUILD_SLICE);
             }
         } else {
             // [?:x]
             compile_node(comp, pn);
-            EMIT_ARG(build_slice, 2);
+            EMIT_ARG(build, 2, MP_EMIT_BUILD_SLICE);
         }
     } else {
         // [?:x]
         compile_node(comp, pn);
-        EMIT_ARG(build_slice, 2);
+        EMIT_ARG(build, 2, MP_EMIT_BUILD_SLICE);
     }
 }
 
@@ -3045,7 +3045,7 @@ STATIC void compile_scope(compiler_t *comp, scope_t *scope, pass_kind_t pass) {
             EMIT_ARG(build, 0, MP_EMIT_BUILD_MAP);
         #if MICROPY_PY_BUILTINS_SET
         } else if (scope->kind == SCOPE_SET_COMP) {
-            EMIT_ARG(build_set, 0);
+            EMIT_ARG(build, 0, MP_EMIT_BUILD_SET);
         #endif
         }
 
diff --git a/py/emit.h b/py/emit.h
index d6ebcf791a..7f0d8c0f72 100644
--- a/py/emit.h
+++ b/py/emit.h
@@ -82,6 +82,8 @@ typedef enum {
 #define MP_EMIT_BUILD_TUPLE (0)
 #define MP_EMIT_BUILD_LIST (1)
 #define MP_EMIT_BUILD_MAP (3)
+#define MP_EMIT_BUILD_SET (6)
+#define MP_EMIT_BUILD_SLICE (8)
 
 // Kind for emit->yield()
 #define MP_EMIT_YIELD_VALUE (0)
@@ -140,12 +142,6 @@ typedef struct _emit_method_table_t {
     void (*binary_op)(emit_t *emit, mp_binary_op_t op);
     void (*build)(emit_t *emit, mp_uint_t n_args, int kind);
     void (*store_map)(emit_t *emit);
-    #if MICROPY_PY_BUILTINS_SET
-    void (*build_set)(emit_t *emit, mp_uint_t n_args);
-    #endif
-    #if MICROPY_PY_BUILTINS_SLICE
-    void (*build_slice)(emit_t *emit, mp_uint_t n_args);
-    #endif
     void (*store_comp)(emit_t *emit, scope_kind_t kind, mp_uint_t set_stack_index);
     void (*unpack_sequence)(emit_t *emit, mp_uint_t n_args);
     void (*unpack_ex)(emit_t *emit, mp_uint_t n_left, mp_uint_t n_right);
@@ -241,12 +237,6 @@ void mp_emit_bc_unary_op(emit_t *emit, mp_unary_op_t op);
 void mp_emit_bc_binary_op(emit_t *emit, mp_binary_op_t op);
 void mp_emit_bc_build(emit_t *emit, mp_uint_t n_args, int kind);
 void mp_emit_bc_store_map(emit_t *emit);
-#if MICROPY_PY_BUILTINS_SET
-void mp_emit_bc_build_set(emit_t *emit, mp_uint_t n_args);
-#endif
-#if MICROPY_PY_BUILTINS_SLICE
-void mp_emit_bc_build_slice(emit_t *emit, mp_uint_t n_args);
-#endif
 void mp_emit_bc_store_comp(emit_t *emit, scope_kind_t kind, mp_uint_t list_stack_index);
 void mp_emit_bc_unpack_sequence(emit_t *emit, mp_uint_t n_args);
 void mp_emit_bc_unpack_ex(emit_t *emit, mp_uint_t n_left, mp_uint_t n_right);
diff --git a/py/emitbc.c b/py/emitbc.c
index 6be9f900c7..4c587c72e3 100644
--- a/py/emitbc.c
+++ b/py/emitbc.c
@@ -800,6 +800,8 @@ void mp_emit_bc_build(emit_t *emit, mp_uint_t n_args, int kind) {
     MP_STATIC_ASSERT(MP_BC_BUILD_TUPLE + MP_EMIT_BUILD_TUPLE == MP_BC_BUILD_TUPLE);
     MP_STATIC_ASSERT(MP_BC_BUILD_TUPLE + MP_EMIT_BUILD_LIST == MP_BC_BUILD_LIST);
     MP_STATIC_ASSERT(MP_BC_BUILD_TUPLE + MP_EMIT_BUILD_MAP == MP_BC_BUILD_MAP);
+    MP_STATIC_ASSERT(MP_BC_BUILD_TUPLE + MP_EMIT_BUILD_SET == MP_BC_BUILD_SET);
+    MP_STATIC_ASSERT(MP_BC_BUILD_TUPLE + MP_EMIT_BUILD_SLICE == MP_BC_BUILD_SLICE);
     if (kind == MP_EMIT_BUILD_MAP) {
         emit_bc_pre(emit, 1);
     } else {
@@ -813,20 +815,6 @@ void mp_emit_bc_store_map(emit_t *emit) {
     emit_write_bytecode_byte(emit, MP_BC_STORE_MAP);
 }
 
-#if MICROPY_PY_BUILTINS_SET
-void mp_emit_bc_build_set(emit_t *emit, mp_uint_t n_args) {
-    emit_bc_pre(emit, 1 - n_args);
-    emit_write_bytecode_byte_uint(emit, MP_BC_BUILD_SET, n_args);
-}
-#endif
-
-#if MICROPY_PY_BUILTINS_SLICE
-void mp_emit_bc_build_slice(emit_t *emit, mp_uint_t n_args) {
-    emit_bc_pre(emit, 1 - n_args);
-    emit_write_bytecode_byte_uint(emit, MP_BC_BUILD_SLICE, n_args);
-}
-#endif
-
 void mp_emit_bc_store_comp(emit_t *emit, scope_kind_t kind, mp_uint_t collection_stack_index) {
     int t;
     int n;
@@ -979,12 +967,6 @@ const emit_method_table_t emit_bc_method_table = {
     mp_emit_bc_binary_op,
     mp_emit_bc_build,
     mp_emit_bc_store_map,
-    #if MICROPY_PY_BUILTINS_SET
-    mp_emit_bc_build_set,
-    #endif
-    #if MICROPY_PY_BUILTINS_SLICE
-    mp_emit_bc_build_slice,
-    #endif
     mp_emit_bc_store_comp,
     mp_emit_bc_unpack_sequence,
     mp_emit_bc_unpack_ex,
diff --git a/py/emitnative.c b/py/emitnative.c
index e06198bc94..331e4cf18e 100644
--- a/py/emitnative.c
+++ b/py/emitnative.c
@@ -1950,18 +1950,29 @@ STATIC void emit_native_binary_op(emit_t *emit, mp_binary_op_t op) {
     }
 }
 
+#if MICROPY_PY_BUILTINS_SLICE
+STATIC void emit_native_build_slice(emit_t *emit, mp_uint_t n_args);
+#endif
+
 STATIC void emit_native_build(emit_t *emit, mp_uint_t n_args, int kind) {
     // for viper: call runtime, with types of args
     //   if wrapped in byte_array, or something, allocates memory and fills it
     MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_TUPLE == MP_F_BUILD_TUPLE);
     MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_LIST == MP_F_BUILD_LIST);
     MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_MAP == MP_F_BUILD_MAP);
+    MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_SET == MP_F_BUILD_SET);
+    #if MICROPY_PY_BUILTINS_SLICE
+    if (kind == MP_EMIT_BUILD_SLICE) {
+        emit_native_build_slice(emit, n_args);
+        return;
+    }
+    #endif
     emit_native_pre(emit);
-    if (kind == MP_EMIT_BUILD_TUPLE || kind == MP_EMIT_BUILD_LIST) {
+    if (kind == MP_EMIT_BUILD_TUPLE || kind == MP_EMIT_BUILD_LIST || kind == MP_EMIT_BUILD_SET) {
         emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
     }
     emit_call_with_imm_arg(emit, MP_F_BUILD_TUPLE + kind, n_args, REG_ARG_1);
-    emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new tuple/list/map
+    emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new tuple/list/map/set
 }
 
 STATIC void emit_native_store_map(emit_t *emit) {
@@ -1974,15 +1985,6 @@ STATIC void emit_native_store_map(emit_t *emit) {
     emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // map
 }
 
-#if MICROPY_PY_BUILTINS_SET
-STATIC void emit_native_build_set(emit_t *emit, mp_uint_t n_args) {
-    emit_native_pre(emit);
-    emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
-    emit_call_with_imm_arg(emit, MP_F_BUILD_SET, n_args, REG_ARG_1);
-    emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new set
-}
-#endif
-
 #if MICROPY_PY_BUILTINS_SLICE
 STATIC void emit_native_build_slice(emit_t *emit, mp_uint_t n_args) {
     DEBUG_printf("build_slice %d\n", n_args);
@@ -2266,12 +2268,6 @@ const emit_method_table_t EXPORT_FUN(method_table) = {
     emit_native_binary_op,
     emit_native_build,
     emit_native_store_map,
-    #if MICROPY_PY_BUILTINS_SET
-    emit_native_build_set,
-    #endif
-    #if MICROPY_PY_BUILTINS_SLICE
-    emit_native_build_slice,
-    #endif
     emit_native_store_comp,
     emit_native_unpack_sequence,
     emit_native_unpack_ex,
diff --git a/py/nativeglue.c b/py/nativeglue.c
index e63c2fcda6..b87da6931e 100644
--- a/py/nativeglue.c
+++ b/py/nativeglue.c
@@ -146,8 +146,8 @@ void *const mp_fun_table[MP_F_NUMBER_OF] = {
     mp_obj_new_dict,
     mp_obj_dict_store,
 #if MICROPY_PY_BUILTINS_SET
-    mp_obj_new_set,
     mp_obj_set_store,
+    mp_obj_new_set,
 #endif
     mp_make_function_from_raw_code,
     mp_native_call_function_n_kw,
diff --git a/py/runtime0.h b/py/runtime0.h
index 960532d176..2e89de9f41 100644
--- a/py/runtime0.h
+++ b/py/runtime0.h
@@ -164,8 +164,8 @@ typedef enum {
     MP_F_BUILD_MAP,
     MP_F_STORE_MAP,
 #if MICROPY_PY_BUILTINS_SET
-    MP_F_BUILD_SET,
     MP_F_STORE_SET,
+    MP_F_BUILD_SET,
 #endif
     MP_F_MAKE_FUNCTION_FROM_RAW_CODE,
     MP_F_NATIVE_CALL_FUNCTION_N_KW,