X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fircgopt.c;h=c95e0a52a640e3d9ff65541254f709bc60e2f218;hb=2ce8008369b1dced0ccd07574d91bff82ab773ef;hp=095a527225207fd7ed2bd86c61572ee2bf5a3e47;hpb=dc846fc56d4adb28ee4811ea1ae16cf0bd8fb85f;p=libfirm

diff --git a/ir/opt/ircgopt.c b/ir/opt/ircgopt.c
index 095a52722..c95e0a52a 100644
--- a/ir/opt/ircgopt.c
+++ b/ir/opt/ircgopt.c
@@ -64,7 +64,7 @@ static void collect_call(ir_node *node, void *env)
 void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
 {
 	void * MARK = &MARK; /* @@@ gefaehrlich!!! Aber wir markieren hoechstens zu viele ... */
-	int i;
+	size_t i, n;
 
 	FIRM_DBG_REGISTER(dbg, "firm.opt.cgopt");
 
@@ -102,11 +102,11 @@ void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
 			/* iterate calls */
 			for (node = (ir_node*)get_irn_link(node); node != NULL;
 			     node = (ir_node*)get_irn_link(node)) {
-				int i;
+				size_t i;
 				assert(is_Call(node));
 
-				for (i = get_Call_n_callees(node) - 1; i >= 0; --i) {
-					ir_entity *ent = get_Call_callee(node, i);
+				for (i = get_Call_n_callees(node); i > 0;) {
+					ir_entity *ent = get_Call_callee(node, --i);
 
 					if (get_entity_irg(ent) && get_entity_link(ent) != MARK) {
 						set_entity_link(ent, MARK);
@@ -123,7 +123,7 @@ void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
 	}
 
 	/* clean */
-	for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
+	for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
 		ir_graph  *irg = get_irp_irg(i);
 		ir_entity *ent = get_irg_entity(irg);