fix some memory leaks in beprefalloc

diff --git a/ir/be/beprefalloc.c b/ir/be/beprefalloc.c
index 4688201..c5ebeb5 100644 (file)
--- a/ir/be/beprefalloc.c
+++ b/ir/be/beprefalloc.c
@@ -435,8 +435,10 @@ static void create_congruence_class(ir_node *block, void *data)
                );
                be_liveness_transfer(cls, node, &live_nodes);
        }
-       if (!last_phi)
+       if (!last_phi) {
+               ir_nodeset_destroy(&live_nodes);
                return;
+       }
 
        /* check phi congruence classes */
        sched_foreach_reverse_from(last_phi, phi) {
@@ -504,6 +506,7 @@ static void create_congruence_class(ir_node *block, void *data)
                        }
                }
        }
+       ir_nodeset_destroy(&live_nodes);
 }
 
 static void set_congruence_prefs(ir_node *node, void *data)
@@ -1855,6 +1858,11 @@ static void determine_block_order(void)
        n_block_order = n_blocks;
 }
 
+static void free_block_order(void)
+{
+       xfree(block_order);
+}
+
 /**
  * Run the register allocator for the current register class.
  */
@@ -1962,6 +1970,8 @@ static void be_pref_alloc(ir_graph *new_irg)
                stat_ev_ctx_pop("regcls");
        }
 
+       free_block_order();
+
        be_timer_push(T_RA_SPILL_APPLY);
        be_abi_fix_stack_nodes(irg);
        be_timer_pop(T_RA_SPILL_APPLY);