detect fully/partly redundant by inspection node index ...

[libfirm] / ir / opt / return.c

diff --git a/ir/opt/return.c b/ir/opt/return.c
index ce580ee..49088db 100644 (file)
--- a/ir/opt/return.c
+++ b/ir/opt/return.c
@@ -190,6 +190,8 @@ static int can_move_ret(ir_node *ret) {
 
        /* check, that predecessors are Jmps */
        n = get_Block_n_cfgpreds(retbl);
+       if (n <= 1)
+               return 0;
        for (i = 0; i < n; ++i) {
                ir_node *pred = get_Block_cfgpred(retbl, i);
 
@@ -202,9 +204,7 @@ static int can_move_ret(ir_node *ret) {
                        set_Block_cfgpred(retbl, i, jmp);
                }
        }
-
-       /* if we have 0 control flow predecessors, we cannot move :-) */
-       return n > 0;
+       return 1;
 }
 
 /*