Correct inaccurate comment: The only corner case of wrong CF in NEG+ADD as replacemen...

[libfirm] / ir / lower / lower_copyb.c

diff --git a/ir/lower/lower_copyb.c b/ir/lower/lower_copyb.c
index b8591ca..d18afa7 100644 (file)
--- a/ir/lower/lower_copyb.c
+++ b/ir/lower/lower_copyb.c
@@ -66,7 +66,7 @@ static ir_mode *get_ir_mode(unsigned bytes)
  */
 static void lower_copyb_nodes(ir_node *irn, unsigned mode_bytes)
 {
-       ir_graph        *irg = current_ir_graph;
+       ir_graph        *irg = get_irn_irg(irn);
        unsigned         size;
        unsigned         offset;
        ir_mode         *mode;
@@ -118,10 +118,10 @@ static void lower_copyb_nodes(ir_node *irn, unsigned mode_bytes)
                mode_bytes /= 2;
        }
 
-       turn_into_tuple(irn, pn_CopyB_max);
+       turn_into_tuple(irn, pn_CopyB_max+1);
        set_Tuple_pred(irn, pn_CopyB_M,         mem);
-       set_Tuple_pred(irn, pn_CopyB_X_regular, get_irg_bad(irg));
-       set_Tuple_pred(irn, pn_CopyB_X_except,  get_irg_bad(irg));
+       set_Tuple_pred(irn, pn_CopyB_X_regular, new_r_Bad(irg, mode_X));
+       set_Tuple_pred(irn, pn_CopyB_X_except,  new_r_Bad(irg, mode_X));
 }
 
 /**
@@ -167,10 +167,7 @@ static void find_copyb_nodes(ir_node *irn, void *ctx)
 void lower_CopyB(ir_graph *irg, unsigned max_size, unsigned native_mode_bytes)
 {
        walk_env_t env;
-       entry_t  *entry;
-       ir_graph *rem = current_ir_graph;
-
-       current_ir_graph = irg;
+       entry_t   *entry;
 
        obstack_init(&env.obst);
        env.max_size = max_size;
@@ -182,5 +179,4 @@ void lower_CopyB(ir_graph *irg, unsigned max_size, unsigned native_mode_bytes)
        }
 
        obstack_free(&env.obst, NULL);
-       current_ir_graph = rem;
 }