X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fircgopt.c;h=df3738eb8bbfa503d43c0406ba50717d5e4cb7c4;hb=8c9921a1fc166552f6e416434fd8394a4fc210a3;hp=ef4baf275047d847ffc921d5eeaf95a8d8d2ce1c;hpb=f164b24b962ffc75287122e131ecbbe1cbb8950b;p=libfirm

diff --git a/ir/opt/ircgopt.c b/ir/opt/ircgopt.c
index ef4baf275..df3738eb8 100644
--- a/ir/opt/ircgopt.c
+++ b/ir/opt/ircgopt.c
@@ -22,7 +22,6 @@
  * @brief    Removal of unreachable methods.
  * @author   Hubert Schmid
  * @date     09.06.2002
- * @version  $Id$
  */
 
 /*
@@ -45,7 +44,7 @@
 #include "irtools.h"
 #include "irpass.h"
 
-DEBUG_ONLY(static firm_dbg_module_t *dbg);
+DEBUG_ONLY(static firm_dbg_module_t *dbg;)
 
 /**
  * Walker: adds Call operations to a head's link list.
@@ -64,7 +63,7 @@ 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");
 
@@ -86,8 +85,8 @@ void gc_irgs(size_t n_keep, ir_entity ** keep_arr)
 			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 +101,11 @@ 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 +122,7 @@ 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);