X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbecopyheur.c;h=3f642d20d9af905955ebbb6b0f021a0554678533;hb=143561a3b47dd7cd6fbd1760d69f9299b64e9994;hp=1dfb38f878367304eaaba3e1dcd432aaa3a7a2af;hpb=719b0dc8377fc55decc4629bf5e523104a82b76f;p=libfirm

diff --git a/ir/be/becopyheur.c b/ir/be/becopyheur.c
index 1dfb38f87..3f642d20d 100644
--- a/ir/be/becopyheur.c
+++ b/ir/be/becopyheur.c
@@ -525,6 +525,8 @@ static void ou_optimize(unit_t *ou) {
 	arch_put_non_ignore_regs(aenv, cls, ign_regs);
 	bitset_and(pos_regs, ign_regs);
 
+	assert(bitset_popcnt(pos_regs) != 0 && "No register is allowed for this node !!?");
+
 	/* create new qnode */
 	bitset_foreach(pos_regs, i)
 		ou_insert_qnode(ou, new_qnode(ou, i));