fixed warnings

[libfirm] / ir / opt / convopt.c

diff --git a/ir/opt/convopt.c b/ir/opt/convopt.c
index 9a3983f..b984080 100644 (file)
--- a/ir/opt/convopt.c
+++ b/ir/opt/convopt.c
@@ -190,6 +190,7 @@ void conv_opt_walker(ir_node *node, void *data)
        ir_mode *pred_mode;
        ir_mode *mode;
        int costs;
+       (void) data;
 
 #if 0
        if(is_Cmp(node)) {
@@ -220,21 +221,20 @@ void conv_opt_walker(ir_node *node, void *data)
 
 void conv_opt(ir_graph *irg)
 {
+       char invalidate = 0;
        FIRM_DBG_REGISTER(dbg, "firm.opt.conv");
 
        DB((dbg, LEVEL_1, "===> Performing conversion optimization on %+F\n", irg));
 
        edges_assure(irg);
-       char invalidate = 0;
        do {
                changed = 0;
                irg_walk_graph(irg, NULL, conv_opt_walker, NULL);
                local_optimize_graph(irg);
-               if(changed)
-                       invalidate = 1;
+               invalidate |= changed;
        } while (changed);
 
-       if(invalidate) {
+       if (invalidate) {
                set_irg_outs_inconsistent(irg);
        }
 }