array: Add and use NEW_ARR_DZ().

[libfirm] / ir / be / betranshlp.c

diff --git a/ir/be/betranshlp.c b/ir/be/betranshlp.c
index d4c102c..32f346e 100644 (file)
--- a/ir/be/betranshlp.c
+++ b/ir/be/betranshlp.c
@@ -379,10 +379,8 @@ void be_transform_graph(ir_graph *irg, arch_pretrans_nodes *func)
        current_ir_graph = irg;
 
        /* create a new obstack */
-       struct obstack *old_obst = irg->obst;
-       struct obstack *new_obst = XMALLOC(struct obstack);
-       obstack_init(new_obst);
-       irg->obst = new_obst;
+       struct obstack old_obst = irg->obst;
+       obstack_init(&irg->obst);
        irg->last_node_idx = 0;
 
        free_vrp_data(irg);
@@ -394,8 +392,7 @@ void be_transform_graph(ir_graph *irg, arch_pretrans_nodes *func)
        transform_nodes(irg, func);
 
        /* free the old obstack */
-       obstack_free(old_obst, 0);
-       xfree(old_obst);
+       obstack_free(&old_obst, 0);
 
        /* restore state */
        current_ir_graph = old_current_ir_graph;