stop making visit glue for closures and traits

Author: thestinger

src/librustc/middle/trans/base.rs

@@ -376,7 +376,7 @@ pub fn malloc_raw_dyn<'a>(
 
         // Get the tydesc for the body:
         let static_ti = get_tydesc(ccx, t);
-        glue::lazily_emit_all_tydesc_glue(ccx, static_ti);
+        glue::lazily_emit_tydesc_glue(ccx, abi::tydesc_field_drop_glue, static_ti);
 
         // Allocate space:
         let tydesc = PointerCast(bcx, static_ti.tydesc, Type::i8p());

src/librustc/middle/trans/glue.rs

@@ -131,7 +131,7 @@ fn simplified_glue_type(tcx: ty::ctxt, field: uint, t: ty::t) -> ty::t {
     t
 }
 
-fn lazily_emit_tydesc_glue(ccx: @CrateContext, field: uint, ti: @tydesc_info) {
+pub fn lazily_emit_tydesc_glue(ccx: @CrateContext, field: uint, ti: @tydesc_info) {
     let _icx = push_ctxt("lazily_emit_tydesc_glue");
 
     let simpl = simplified_glue_type(ccx.tcx, field, ti.ty);

src/librustc/middle/trans/meth.rs

@@ -481,7 +481,7 @@ pub fn get_vtable(bcx: &Block,
 
     // Generate a type descriptor for the vtable.
     let tydesc = get_tydesc(ccx, self_ty);
-    glue::lazily_emit_all_tydesc_glue(ccx, tydesc);
+    glue::lazily_emit_tydesc_glue(ccx, abi::tydesc_field_drop_glue, tydesc);
 
     let vtable = make_vtable(ccx, tydesc, methods);