X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=ir%2Fopt%2Ftailrec.c;h=55ea68a42d548ad9c6218827750cf4cadb10df8a;hb=6596239a5116d8b13257f7976b57c9de619a606e;hp=a5e493884077c7d33ecd89d66c828de9bae207d7;hpb=36332e717eebd9b98603a99ea24e390a1d2aa3be;p=libfirm

diff --git a/ir/opt/tailrec.c b/ir/opt/tailrec.c
index a5e493884..55ea68a42 100644
--- a/ir/opt/tailrec.c
+++ b/ir/opt/tailrec.c
@@ -263,10 +263,7 @@ static void do_opt_tail_rec(ir_graph *irg, tr_env *env) {
 	 * ok, we are here, so we have build and collected all needed Phi's
 	 * now exchange all Projs into links to Phi
 	 */
-	for (p = data.proj_m; p; p = n) {
-		n = get_irn_link(p);
-		exchange(p, phis[0]);
-	}
+	exchange(data.proj_m, phis[0]);
 	for (p = data.proj_data; p; p = n) {
 		long proj = get_Proj_proj(p);
 
@@ -492,7 +489,7 @@ static tail_rec_variants find_variant(ir_node *irn, ir_node *call) {
 		return TR_BAD;
 
 	case iro_Sub:
-		/* try additive, but return value mut be left */
+		/* try additive, but return value must be left */
 		a = get_Sub_left(irn);
 		if (get_irn_MacroBlock(a) != get_irn_MacroBlock(call)) {
 			/* we are outside, ignore */
@@ -722,8 +719,10 @@ void opt_tail_recursion(void) {
 
 		current_ir_graph = irg;
 
+		set_using_irn_link(irg);
 		if (opt_tail_rec_irg(irg))
 			++n_opt_applications;
+		clear_using_irn_link(irg);
 	}
 
 	DB((dbg, LEVEL_1, "Performed tail recursion for %d of %d graphs\n",