X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fana%2Firscc.c;h=260b4a928b307fe0485738e8662900141f7bbcdc;hb=a0ef602ed410bf9c6767972484ef44a27ba4d8c8;hp=4494289c7ea2388d56fcb63ffa726ac92dea74e0;hpb=5b0dd290528883c15583d01fc034a3fce00fe9fe;p=libfirm

diff --git a/ir/ana/irscc.c b/ir/ana/irscc.c
index 4494289c7..260b4a928 100644
--- a/ir/ana/irscc.c
+++ b/ir/ana/irscc.c
@@ -209,18 +209,13 @@ static INLINE void init_stack(void) {
 	tos = 0;
 }
 
-#if 0
 /**
  * Frees the stack.
  */
-static INLINE void free_stack(void) {
-	if (stack != NULL) {
-		DEL_ARR_F(stack);
-		stack = NULL;
-	}
-	tos = 0;
+static void finish_stack(void) {
+	DEL_ARR_F(stack);
+	stack = NULL;
 }
-#endif
 
 /**
  * push a node onto the stack
@@ -350,6 +345,11 @@ static INLINE void init_scc(ir_graph *irg, struct obstack *obst) {
 	*/
 }
 
+static INLINE void finish_scc(void)
+{
+	finish_stack();
+}
+
 #ifdef INTERPROCEDURAL_VIEW
 static INLINE void init_ip_scc(struct obstack *obst) {
 	init_scc_common();
@@ -931,6 +931,8 @@ int construct_backedges(ir_graph *irg) {
 	inc_irg_visited(irg);
 
 	scc(get_irg_end(irg));
+
+	finish_scc();
 	obstack_free(&temp, NULL);
 
 	assert(head_rem == current_loop);
@@ -1248,8 +1250,8 @@ int is_loop_variant(ir_loop *l, ir_loop *b) {
  *
  * Returns non-zero, if the node n is not changed in the loop block
  * belongs to or in inner loops of this blocks loop. */
-int is_loop_invariant(ir_node *n, ir_node *block) {
+int is_loop_invariant(const ir_node *n, const ir_node *block) {
 	ir_loop *l = get_irn_loop(block);
-	ir_node *b = is_Block(n) ? n : get_nodes_block(n);
+	const ir_node *b = is_Block(n) ? n : get_nodes_block(n);
 	return !is_loop_variant(l, get_irn_loop(b));
 }