output unitialized data with .comm

diff --git a/ir/be/ia32/ia32_gen_decls.c b/ir/be/ia32/ia32_gen_decls.c
index 26427e3..45039ab 100644 (file)
--- a/ir/be/ia32/ia32_gen_decls.c
+++ b/ir/be/ia32/ia32_gen_decls.c
@@ -527,14 +527,17 @@ static void dump_global(ia32_decl_env_t *env, ir_entity *ent)
                return;
        }
        /* alignment */
-       if(align > 1) {
+       if(align > 1 && variability != variability_uninitialized) {
                obstack_printf(obst, ".balign\t%d\n", align);
        }
 
-       obstack_printf(obst, "%s:\n", ld_name);
+       if(variability != variability_uninitialized) {
+               obstack_printf(obst, "%s:\n", ld_name);
+       }
 
        if (variability == variability_uninitialized) {
-               obstack_printf(obst, "\t.zero %d\n", get_type_size_bytes(type));
+               obstack_printf(obst, "\t.comm %s,%d,%d\n",
+                               ld_name, get_type_size_bytes(type), align);
        } else if (is_atomic_type(type)) {
                dump_atomic_init(obst, get_atomic_ent_value(ent));
        } else if (ent_is_string_const(ent)) {