don't setup copymin data structures if no copymin is want

[libfirm] / ir / be / becopyopt.c

diff --git a/ir/be/becopyopt.c b/ir/be/becopyopt.c
index be1271d..ef0e1b7 100644 (file)
--- a/ir/be/becopyopt.c
+++ b/ir/be/becopyopt.c
@@ -1133,6 +1133,10 @@ void co_driver(be_chordal_env_t *cenv)
 
        assert(selected_copyopt);
 
+       /* skip copymin if algo is 'none' */
+       if(selected_copyopt->copyopt == void_algo)
+               return;
+
        be_liveness_assure_chk(be_get_birg_liveness(cenv->birg));
 
        co = new_copy_opt(cenv, cost_func);