diff --git a/src/intel/compiler/brw_compiler.h b/src/intel/compiler/brw_compiler.h
index b9d79ad0c06..6a78965abc6 100644
--- a/src/intel/compiler/brw_compiler.h
+++ b/src/intel/compiler/brw_compiler.h
@@ -1202,6 +1202,12 @@ struct brw_vue_map {
     */
    int num_slots;
 
+   /**
+    * Number of position VUE slots.  If num_pos_slots > 1, primitive
+    * replication is being used.
+    */
+   int num_pos_slots;
+
    /**
     * Number of per-patch VUE slots. Only valid for tessellation control
     * shader outputs and tessellation evaluation shader inputs.
diff --git a/src/intel/compiler/brw_vue_map.c b/src/intel/compiler/brw_vue_map.c
index b7f379d2e5a..c11708b9df1 100644
--- a/src/intel/compiler/brw_vue_map.c
+++ b/src/intel/compiler/brw_vue_map.c
@@ -206,6 +206,7 @@ brw_compute_vue_map(const struct intel_device_info *devinfo,
    }
 
    vue_map->num_slots = slot;
+   vue_map->num_pos_slots = pos_slots;
    vue_map->num_per_vertex_slots = 0;
    vue_map->num_per_patch_slots = 0;
 }
@@ -275,6 +276,7 @@ brw_compute_tess_vue_map(struct brw_vue_map *vue_map,
    }
 
    vue_map->num_per_vertex_slots = slot - vue_map->num_per_patch_slots;
+   vue_map->num_pos_slots = 0;
    vue_map->num_slots = slot;
 }