removed C99 features

[libfirm] / ir / be / beflags.c

diff --git a/ir/be/beflags.c b/ir/be/beflags.c
index ccc1e18..2c8f679 100644 (file)
--- a/ir/be/beflags.c
+++ b/ir/be/beflags.c
@@ -57,6 +57,7 @@ static const arch_env_t            *arch_env   = NULL;
 static const arch_register_class_t *flag_class = NULL;
 static const arch_register_t       *flags_reg  = NULL;
 static func_rematerialize           remat      = NULL;
+static int                          changed;
 
 static ir_node *default_remat(ir_node *node, ir_node *after)
 {
@@ -141,7 +142,8 @@ static void rematerialize_or_move(ir_node *flags_needed, ir_node *node,
                return;
        }
 
-       copy = remat(flags_needed, node);
+       changed = 1;
+       copy    = remat(flags_needed, node);
 
        if(get_irn_mode(copy) == mode_T) {
                ir_node *block = get_nodes_block(copy);
@@ -284,10 +286,15 @@ void be_sched_fix_flags(be_irg_t *birg, const arch_register_class_t *flag_cls,
        flag_class = flag_cls;
        flags_reg  = & flag_class->regs[0];
        remat      = remat_func;
+       changed    = 0;
        if(remat == NULL)
                remat = &default_remat;
 
        set_using_irn_link(irg);
        irg_block_walk_graph(irg, fix_flags_walker, NULL, NULL);
        clear_using_irn_link(irg);
+
+       if(changed) {
+               be_remove_dead_nodes_from_schedule(birg);
+       }
 }