Fixed a bug

diff --git a/ir/be/bechordal.c b/ir/be/bechordal.c
index c94f083..0c4334c 100644 (file)
--- a/ir/be/bechordal.c
+++ b/ir/be/bechordal.c
@@ -169,7 +169,7 @@ static border_t *handle_constraint_perm(be_chordal_alloc_env_t *alloc_env, borde
        int n                      = get_irn_arity(perm_border->irn);
        int n_projs                = 0;
 
-       border_t *b, *next_border;
+       border_t *b, *next_border, *cnstr_border;
 
        arch_register_req_t req;
        ir_node *cnstr;
@@ -182,14 +182,15 @@ static border_t *handle_constraint_perm(be_chordal_alloc_env_t *alloc_env, borde
         * After the Perm, there must be a sequence of Projs
         * which extract the permuted values of the Perm.
         */
-       for(b = border_next(perm_border); is_Proj(b->irn); b = border_next(b)) {
+       for(b = perm_border; is_Proj(b->irn); b = border_next(b)) {
                assert(is_Proj(b->irn));
                assert(b->is_def);
                n_projs++;
        }
 
-       cnstr       = b->irn;
-       next_border = border_next(b);
+       cnstr_border = b;
+       next_border  = border_next(b);
+       cnstr        = b->irn;
 
        assert(n_projs == n && "There must be as many Projs as the Perm is wide");
 
@@ -211,7 +212,7 @@ static border_t *handle_constraint_perm(be_chordal_alloc_env_t *alloc_env, borde
         * constraint of the Perm's Proj. So we only have to
         * consider output constraints here.
         */
-       for(b = border_next(perm_border); b != next_border; b = border_next(b)) {
+       for(b = perm_border; b != next_border; b = border_next(b)) {
                ir_node *irn = b->irn;
 
                req.type = arch_register_req_type_normal;
@@ -229,7 +230,7 @@ static border_t *handle_constraint_perm(be_chordal_alloc_env_t *alloc_env, borde
                }
        }
 
-       for(b = border_next(perm_border); b != next_border; b = border_next(b)) {
+       for(b = perm_border; b != next_border; b = border_next(b)) {
                ir_node *irn = b->irn;
                int nr       = get_irn_graph_nr(irn);
 
@@ -243,7 +244,7 @@ static border_t *handle_constraint_perm(be_chordal_alloc_env_t *alloc_env, borde
                }
        }
 
-       return next_border;
+       return cnstr_border;
 }
 
 /**
@@ -461,7 +462,7 @@ static void assign(ir_node *block, void *env_ptr)
                         * nodes in the border list.
                         */
                        if(is_Perm(b->irn))
-                               b = handle_constraint_perm(alloc_env, b);
+                               b = handle_constraint_perm(alloc_env, border_next(b));
                }
        }