X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fircgopt.c;h=c95e0a52a640e3d9ff65541254f709bc60e2f218;hb=762b472fc81c73cf7a1b0041b8cd286b7206d79d;hp=d4a20d24cf470851f95ab4ef138a09d22498bb34;hpb=971bb3d4ab2da19de4f3edc07e56e4249d765efd;p=libfirm

diff --git a/ir/opt/ircgopt.c b/ir/opt/ircgopt.c
index d4a20d24c..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");
 
@@ -81,13 +81,13 @@ void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
 		size_t    idx;
 
 		for (idx = 0; idx < n_keep; ++idx) {
-			marked[i] = keep_arr[idx];
+			marked[idx] = keep_arr[idx];
 			set_entity_link(marked[idx], MARK);
 			DB((dbg, LEVEL_1, "  method %+F kept alive.\n", marked[idx]));
 		}
 
-		for (i = 0; i < ARR_LEN(marked); ++i) {
-			ir_graph *irg = get_entity_irg(marked[i]);
+		for (idx = 0; idx < ARR_LEN(marked); ++idx) {
+			ir_graph *irg = get_entity_irg(marked[idx]);
 			ir_node *node;
 
 			if (irg == NULL)
@@ -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);